Nutritional support teams increase percutaneous endoscopic gastrostomy uptake in motor neuron disease

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Online Submissions: http://www.wjgnet.com/esps/                          World J Gastroenterol 2012 November 28; 18(44): 6461-6467
   wjg@wjgnet.com                                                                     ISSN 1007-9327 (print) ISSN 2219-2840 (online)
   doi:10.3748/wjg.v18.i44.6461                                                                  © 2012 Baishideng. All rights reserved.

                                                                                                                   BRIEF ARTICLE

Nutritional support teams increase percutaneous
endoscopic gastrostomy uptake in motor neuron disease

Lin Zhang, Leanne Sanders, Robert JL Fraser

Lin Zhang, Nutrition and Dietetic Department, Flinders Uni-              the discussion regarding gastrostomy was recorded as
versity of South Australia, Bedford Park 5042, South Australia,          Nutritional Support Team (involved in providing nutrition
Australia                                                                input viz Gastroenterologist, Speech Pathologist, Dieti-
Leanne Sanders, Department of Nutrition and Dietetics, Repa-             tian) and other (involved in non-nutritional aspects of
triation General Hospital, Daw Park 5041, South Australia, Aus-
                                                                         patient care). Factors affecting placement and outcomes
tralia
                                                                         including length of survival, change in weight and QoL
Robert JL Fraser, School of Medicine, Flinders University of
South Australia, Bedford Park 5042, South Australia, Australia           were determined.
Author contributions: Fraser RJL and Sanders L designed the
study; Fraser RJL, Sanders L and Zhang L planned the study;              RESULTS: Case records were available for all 86 pa-
Zhang L and Sanders L gathered and analyzed the data; Zhang L,           tients (49 men, mean age at diagnosis 66.4 years).
Sanders L and Fraser RJL interpreted the data and prepared the           Thirty-eight patients had bulbar symptoms and 48 had
manuscript.                                                              peripheral disease as their presenting feature. Sixty-six
Correspondence to: Robert JL Fraser, PhD, Professor of                   patients reported dysphagia. Thirty-one patients had
Medicine, School of Medicine, Flinders University of South Aus-          undergone gastrostomy insertion. The major indications
tralia, Bedford Park 5042, South Australia,                              for PEG placement were dysphagia and weight loss.
Australia. robert.fraser@health.sa.gov.au
                                                                         Nine patients required immediate full feeding, whereas
Telephone: +61-8-82751765 Fax: +61-8-82751083
Received: February 29, 2012 Revised: May 16, 2012
                                                                         17 patients initially used the gastrostomy to supplement
Accepted: May 26, 2012                                                   oral intake, 4 for medication administration and 1 for
Published online: November 28, 2012                                      hydration. Initially the PEG regime met 73% ± 31% of
                                                                         the estimated total energy requirements, increasing to
                                                                         87% ± 32% prior to death. There was stabilization of
                                                                         weight in patients undergoing gastrostomy [BMI at 3
                                                                                                   2                              2
                                                                         mo (22.6 ± 2.2 kg/m ) and 6 mo (22.5 ± 2.0 kg/m )
Abstract                                                                 after PEG placement compared to weight at the time
AIM: To examine factors influencing percutaneous en-                                                           2
                                                                         of the procedure (22.5 ± 3.0 kg/m )]. However, weight
doscopic gastrostomy (PEG) uptake and outcomes in                        loss recurred in the terminal stages of the illness. There
motor neuron disease (MND) in a tertiary care centre.                    was a strong trend for longer survival from diagnosis
                                                                         among MND in PEG recipients with limb onset presenta-
METHODS: Case notes from all patients with a con-                        tion compared to similar patients who did not undergo
firmed diagnosis of MND who had attended the clinic at                   the procedure (P = 0.063). Initial discussions regarding
the Repatriation General Hospital between January 2007                   PEG insertion occurred earlier after diagnosis when seen
and January 2011 and who had since died, were au-                        by nutrition support team (NST) clinicians compared to
dited. Data were extracted for demographics (age and                     other clinicians. (5.4 ± 7.0 mo vs 11.9 ± 13.4 mo, P =
gender), disease characteristics (date of onset, bulbar                  0.028). There was a significant increase in PEG uptake
or peripheral predominance, complications), date and                     (56% vs 24%, P = 0.011) if PEG discussions were ini-
nature of discussion of gastrostomy insertion, nutritional               tiated by the NST staff compared to other clinicians.
status [weight measurements, body mass index (BMI)],                     There was no change in the ALSFRS-R score in patients
date of gastrostomy insertion and subsequent progress                    who underwent PEG (pre 34.1 ± 8.6 vs post 34.8 ±
(duration of survival) and quality of life (QoL) [Amyo-                  7.4), although in non-PEG recipients there was a non-
trophic Lateral Sclerosis Functional Rating Scale-Revised                significant fall in this score (33.7 ± 7.9 vs 31.6 ± 8.8).
(ALSFRS-R)]. In addition, the type of clinician initiating               Four patients died within one month of the procedure,

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Zhang L et al . PEG outcomes in MND

4 developed bacterial site infection requiring antibiotics               crease the use of PEG including nutrition education and
and 1 required endoscopic therapy for gastric bleeding.                  early discussion of alternative feeding routes[10,11]. It has
Less serious complications attributed to the procedure                   also been suggested that involvement of multidisciplinary
included persistent gastrostomy site discomfort, poor                    teams may have a role and potentially improve the length
appetite, altered bowel function and bloating.                           of survival [11-13].
                                                                             The aim of the current study was to examine the fac-
CONCLUSION: Initial discussion with NST clinicians
                                                                         tors associated with the uptake and the outcomes of PEG
increases PEG uptake in MND. Gastrostomy stabilizes
                                                                         placement in patients with MND being managed in a ter-
patient weight but weight loss recurs with advancing
                                                                         tiary referral centre.
disease.

© 2012 Baishideng. All rights reserved.                                  MATERIALS AND METHODS
Key words: Motor neuron disease; Multidisciplinary ma­                   A retrospective case note audit was conducted at the Re­
nagement; Nutrition support team; Percutaneous endo-                     patriation General Hospital (RGH), a 270-bed university
scopic gastrostomy; Survival                                             affiliated teaching metropolitan hospital. The study was
                                                                         approved by the Southern Adelaide Clinical Human
Peer reviewer: Andrew Ukleja, MD, Assistant Professor, De-               Research Ethics Committee. To preserve patient anonymity,
partment of Gastroenterology, Cleveland Clinic Florida, 2950             a unique study ID was assigned to each patient, and personal
Cleveland Clinic Blvd., Weston, FL 33331, United States                  details were kept separate from the research data.
                                                                             Patients were included in this study if they had at­
Zhang L, Sanders L, Fraser RJL. Nutritional support teams in-
                                                                         tended RGH for management of MND, and had died
crease percutaneous endoscopic gastrostomy uptake in motor
neuron disease. World J Gastroenterol 2012; 18(44): 6461-6467
                                                                         between January 2007 and January 2011. All diagnoses
Available from: URL: http://www.wjgnet.com/1007-9327/full/               of MND were confirmed by one or two neurologists
v18/i44/6461.htm DOI: http://dx.doi.org/10.3748/wjg.v18.                 based on El Escorial criteria after appropriate clinical
i44.6461                                                                 examinations and investigations. Patient characteristics
                                                                         including gender, age, dates of MND onset and diagno-
                                                                         sis, presentation features of MND, and complications
                                                                         (the presence of respiratory insufficiency, dysphagia and
INTRODUCTION                                                             dementia) were recorded.
                                                                             The type of MND was classified as either bulbar
In patients with motor neuron disease (MND), the man-                    or limb disease according to symptoms at presentation.
agement of dysphagia either at diagnosis or developing                   Patients with both bulbar and limb symptoms were classified
during disease progression remains a major clinical is-                  as having bulbar disease.
sue[1-3]. Provision of adequate nutrition is important in                    To assess nutrition status, weights at four times were
these patients as malnutrition and dehydration can in-                   determined: usual (prior to diagnosis of MND), at diagnosis,
crease the rate of disease progression and adversely upset               at assessment (when the dietetic service was involved), and
quality of life (QoL)[1]. Although percutaneous endoscopic               at death. In patients undergoing gastrostomy, the weight at
gastrostomy (PEG) insertion is an important strategy in                  PEG insertion, and 3 and 6 mo post-procedure were also
optimizing nutritional management, the effect of this in-                recorded. Body mass index (BMI) and percentage weight
tervention on survival remains controversial with studies                loss (PWL) were also calculated over time.
reporting both benefit[2] and lack of effectiveness[3,4]. The                To assess the role of different clinical groups in PEG
reasons for these discrepancies are unclear and may relate,              management in MND, the type of clinician initiating the
in part, to the timing of PEG insertion in different patient             discussion of PEG, dates of initial PEG discussion and
subgroups[4,5]. Weight gain or weight maintenance has                    PEG insertion, and reasons for accepting or declining
been reported as another positive outcome of PEG, but                    the procedure, together with the rationale for PEG were
the duration of the effect is also uncertain[2,6]. Although              recorded. Clinicians with expertise in PEG insertion and
a number of indications, including weight loss and chok-                 management (dietitian, gastroenterologist or speech pa-
ing have been proposed for PEG insertion in MND[6-8],                    thologist) were considered as a nutritional support team
published data indicate that the procedure is performed                  (NST). Other clinicians involved in MND management
in less than 50% of patients, who fulfill these criteria[1]. In          were recorded individually (e.g., palliative care physicians,
part, this may reflect delays in PEG insertion until there               neurologists, specialist nurses, sleep registered nurses, rheu-
is a major clinical deterioration in swallowing[7], although             matologists and general physicians) and grouped as other.
limited data show subclinical abnormalities in pharyngeal                    To evaluate the effect of PEG placement on QoL, the
function often occur earlier[9]. Thus, it is possible that               results from the Amyotrophic Lateral Sclerosis Functional
some patients who might benefit from supplemental nu-                    Rating Scale-Revised (ALSFRS-R) [14] were obtained
trition may not receive this at the appropriate time[7].                 from the Palliative Care MND clinic at the RGH. Scores
     A number of strategies have been proposed to in-                    were extracted from the records at the closest time prior

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Zhang L et al . PEG outcomes in MND

All patients audited                                     n = 86
                                                                                     Table 1 Summary of patient demographic and disease charac-
                                                                                     teristics characteristics of subjects (mean ± SD) or n (%)
                                           Yes                        No
Dysphagia
                                          n = 66                    n = 20
                                                                                     Males                                                49 (57)
                                                                                     Type of MND
                                Yes                     No            No              Bulbar as predominant symptom                        38 (44)
PEG
                             n = 31                    n = 35       n = 20            Limb as predominant symptom                          48 (56)
                                                                                      Age at symptom onset (yr)                          65.0 ± 13.7
                         B            L            B            L     L               Age at diagnosis (yr)                              66.4 ± 13.0
Bulber (B)/Limb (L)                                                                   Survival after PEG placement (mo)                  11.3 ± 10.1
                       n = 20     n = 11      n = 18       n = 17   n = 20
                                                                                     Living arrangements
                                                                                      Alone                                               13 (15)
Figure 1 Patient numbers according to dysphagia, percutaneous endo-                   With spouse                                         50 (58)
scopic gastrostomy insertion and type of motor neuron disease. PEG:                   With other family member                            10 (12)
Percutaneous endoscopic gastrostomy.                                                  Care facility                                        7 (8)
                                                                                      Not recorded                                         6 (7)
                                                                                     Complications during illness
to (≤ 1 to 5 mo) (Q1) and after (≤ 1 to 5 mo) (Q2)                                    Dysphagia                                           66 (77)
PEG insertion in these patients. For non-PEG patients,                                Respiratory insufficiency                           47 (55)
ALSFRS-R assessments at “correlated” time points Q1’                                  Dementia                                             5 (6)
                                                                                      Symptom onset to PEG placement (mo)                20.3 ± 8.0
and Q2’, corresponding to the mean interval before and                                Diagnosis to PEG placement (mo)                    10.8 ± 8.3
after PEG insertion were used for comparison.
    The outcomes in terms of formula delivery and level                             MND: Motor neuron disease; PEG: Percutaneous endoscopic gastros-
of nutrition support as well as any complications of PEG                            tomy.
placement were also recorded.
    Extracted data were entered into a spreadsheet and
analysed using Predictive Analytics Software Statistics                             procedure between the groups.
Version 18.0.3 for Windows (PASW, formerly SPSS,                                        The major reason for having a PEG inserted was dys-
SPSS Inc., 2010, Chicago, IL, United States). Patient                               phagia (n = 26), with severe weight loss (n = 4) and pro-
                                                                                    phylaxis (n = 1) also recorded. The reasons for PEG inser-
characteristics were recorded as mean ± SD and counts
                                                                                    tion not proceeding after discussion (n = 38) were patient
(percentages). Categorical data were compared by χ 2 tests.
                                                                                    preference (n = 17), death before PEG placement [n = 9,
Continuous data between groups and within groups were
                                                                                    (4 discussed with NST, 5 with other)] and lack of medical
compared by independent-sample T tests and paired-
                                                                                    fitness for procedure (n = 1). In 11 patients no reason for
samples T tests, respectively. P ≤ 0.05 was considered                              refusal was recorded. In patients who died before the PEG
statistically significant in all analyses.                                          could be undertaken, 4 instances were due to advanced dis-
                                                                                    ease and respiratory failure preventing the safe performance
RESULTS                                                                             of the procedure. Two of these were initially discussed with
                                                                                    NST and 2 with other clinicians. Of the other 5 patients
Case records were available for all 86 patients with MND                            (2 NST, 3 other) the patients initially agreed to the gastros-
who attended the hospital and met the selection crite-                              tomy but then failed to proceed with the procedure.
ria. Demographic and disease characteristics are shown                                  Regardless of the presentation (i.e., bulbar or limb),
in Table 1. The breakdown of the number of patients                                 there was a trend towards longer survival in MND pa-
according to the type of MND, presence of dysphagia                                 tients with dysphagia after PEG insertion (21.6 ± 15.6
and PEG insertion are shown in Figure 1.                                            mo), compared to patients who had dysphagia, but did
     In total, 31 subjects underwent PEG placement us-                              not undergo the procedure (16.8 ± 11.0 mo, P = 0.089).
ing a pull technique with either a 20 Fr (n = 28) or an 18                          This increased length of survival reflected the effect in
Fr device. All of these patients had dysphagia. Patients                            patients with limb onset MND who developed dysphagia
with bulbar presentation (20/38, 53%), were more likely                             (PEG: 26.4 ± 20.4 mo vs non-PEG: 14.4 ± 10.8 mo, P =
to have PEG inserted than those presenting with limb                                0.063) (Figure 2) as in bulbar MND patients there was no
symptoms (11/48, 23%, P = 0.004).                                                   difference in survival with or without PEG (19.2 ± 12.0
     PEG placement was discussed with 75.6% (65/86)                                 mo vs 18.0 ± 10.8 mo, P = 0.656).
patients, 92.1%, with bulbar (35/38) and 62.5% with limb                                PEG insertion was accompanied by stabilization of
onset (30/48). The NST initiated these discussions in 36                            patient weight 3 and 6 mo after placement. In contrast, pa-
patients and other clinicians in 29 patients. There was a                           tients who did not undergo PEG placement had ongoing
significant increase in the percentage of patients undergo-                         weight loss. However, further weight loss occurred in all pa-
ing PEG when the initial discussions were held with the                             tients as MND progressed (Table 3). Thus, the mean BMI
NST (56% vs 24%, P < 0.02, Table 2). In addition, these                             for PEG patients decreased significantly from usual weight
patients had longer time from symptom onset to diagno-                              to diagnosis (P = 0.003), diagnosis to assessment for PEG
sis, and a shorter time from diagnosis to PEG. There was                            (P = 0.001) and from this assessment to death (P = 0.023).
no difference in the time from the initial discussion to the                        There was a trend for PEG to be offered to patients who

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Zhang L et al . PEG outcomes in MND

    Table 2 Relationship between the uptake of percutaneous endoscopic gastrostomy and clinician initiating discussion

                                                                                     Nutritional support team                                                Other clinicians            P value
    Initial PEG discussions, n                                                                                                   36                                  29
    Patients undergoing PEG insertion after initial discussion, n                                                         20 (56%, 20/36)                      7 (24%, 7/29)              0.011
    MND symptom onset to MND diagnosis, mo                                                                              12.8 (± 7.5), n = 26                 8.4 (± 3.9), n = 17          0.017
    MND diagnosis to initial PEG discussion, mo                                                                          5.4 (± 7.0), n = 20                11.9 (± 13.4), n = 6          0.028
    Initial PEG discussion to placement, mo                                                                              3.5 (± 3.3), n = 20                 4.4 (± 3.2), n = 6           0.572
    PEG placement to death, mo                                                                                          12.9 (± 11.1), n = 20                8.8 (± 10.1), n = 6          0.422
    MND symptom onset to death, mo                                                                                      30.0 (± 13.2), n = 26               31.2 (± 13.2), n = 17         0.740
    MND diagnosis to death, mo                                                                                          18.0 (± 15.6), n = 36               21.6 (± 15.6), n = 27         0.393

MND: Motor neuron disease; PEG: Percutaneous endoscopic gastrostomy.

    Table 3 Comparison of weight assessments for patients with                                                               1.0
                                                                                                                                                                 Whether patient had
    motor neuron disease undergoing percutaneous endoscopic                                                                                                      PEG inserted or not

                                                                                         Probability of freedom from event
    gastrostomy                                                                                                              0.8
                                                                                                                                                                             Yes
    Time points                   n   1
                                          Body mass index (mean ± SD) kg/m
                                                                              2                                                                                              No
                                                                                                                             0.6
    Usual                         20                    26.6 ± 4.3
    Diagnosis                     23                    25.3 ± 4.0
    Assessment                    25                    23.8 ± 3.6                                                           0.4
    PEG insertion                 25                    22.5 ± 3.0
    3 mo post-PEG                 16                    22.6 ± 2.2
                                                                                                                             0.2
    6 mo post-PEG                 13                    22.5 ± 2.0
    Death                         16                    21.2 ± 2.2
                                          Percentage of weight loss (mean ± SD)                                              0.0
    Usual to diagnosis            22                     5.8 ± 7.5
                                                                                                                                   0.00     20.00   40.00    60.00     80.00    100.00
    Diagnosis to assessment       26                     5.9 ± 7.0
                                                                                                                                          Time from MND diagnosis to death (mo)
    Assessment to PEG insertion   28                     5.9 ± 5.9
    PEG insertion to 3 mo after   18                    -0.1 ± 6.02
    3 to 6 mo post-PEG            13                     1.4 ± 5.1                           Figure 2 Kaplan-Meier plots of survival probabilities after percutaneous
    6 mo post-PEG to death        12                     2.4 ± 4.9                           endoscopic gastrostomy placement among patients with limb onset mo-
                                                                                             tor neuron disease who developed dysphagia. MND: Motor neuron disease;
1                                                                                            PEG: Percutaneous endoscopic gastrostomy.
 Some data unavailable due to patients being unable to be weighed. Usual-
pre-MND diagnosis; Diagnosis-at diagnosis of MND; Assessment-when
dietetic service was involved pre-PEG insertion; 2Percentage of weight
                                                                                             recorded in 19 patients after PEG insertion. These in-
gain. MND: Motor neuron disease; PEG: Percutaneous endoscopic gastros-
tomy.
                                                                                             cluded pain at the site of the gastrostomy at follow up (n
                                                                                             = 9), poor appetite (n = 4), bacterial site infection requir-
                                                                                             ing antibiotics (n = 4), death within 30 d (n = 4, respira-
had greater weight loss from diagnosis to assessment (PWL                                    tory failure), nausea (n = 3), constipation (n = 2), diarrhea
of PEG patients: 5.9% ± 7.0% vs PWL of non-PEG pa-                                           (n = 2), vomiting (n = 2), bloating (n = 1) and gastric
tients with dysphagia: 2.3% ± 6.5%, P = 0.076).                                              hemorrhage (n = 1).
     Initially, 17 patients used PEG to supplement oral
intake; nine required immediate full feeding; four
used PEG for medication administration and one for                                           DISCUSSION
hydration. Eight patients were nil by mouth. Initially the                                   The new findings from this study are that initial discus-
feeding regime met 73% ± 31% of the estimated total                                          sions of PEG insertion by a NST significantly increases
energy requirements and this increased to 87% ± 32%                                          the uptake of PEG by patients with MND, compared to
prior to death.                                                                              when discussions were initiated by other clinicians. There
     Fifty-nine patients (68.6%) had at least one assess-                                    was also a trend for increased survival for patients with
ment with the ALSFRS-R performed during their illness.                                       limb onset disease who had a PEG, but not for patients
There was no change in the ALSFRS-R score in patients                                        with bulbar onset disease. Consistent with previous stud-
who underwent PEG (34.1 ± 8.6, n = 19 at Q1 and 34.8                                         ies, PEG placement initially arrested weight loss, although
± 7.4, n = 17 at Q2). Interestingly, in patients who did                                     with disease progression patients again lost weight prior
not undergo PEG placement, there was a non-significant                                       to death. Data on the QoL were incomplete but no de-
fall in the ALSFRS-R score from 33.7 ± 7.9 (n = 31) at                                       crease was seen in the ratings in patients undergoing
Q1’ to 31.6 ± 8.8 (n = 18) at Q2’. There was no signifi-                                     PEG placement.
cant difference between Q1 and Q1’ (P = 0.886), or Q2                                             Previous reports suggest that the uptake of PEG is
and Q2’ (P = 0.252).                                                                         approximately 20%[1], although up to 80% of MND pa-
     Possible adverse effects related to the procedure were                                  tients developed dysphagia at some point in their illness.

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Zhang L et al . PEG outcomes in MND

The reasons for this are unclear, but may reflect lack of               or limb onset patients; however, the control group in this
enthusiasm by both patient and clinicians about a proce-                study contained patients who did not require PEG place-
dure whose value remains uncertain. Also, patients may                  ment and therefore might have had better nutrition status
lack sufficient information about the procedure and its                 initially.
implications. Additionally in some patients, respiratory                    Maintaining a patient’s weight is a possible advan-
dysfunction may present a contraindication to gastrosto-                tage of PEG in nutrition management in MND, but the
my by preventing safe performance of the procedure[9].                  duration of this effect is unclear. In the present study,
     The current report extends previous data showing                   the patients’ weight stabilized for six months after PEG
that involvement of multidisciplinary teams in the care                 placement, but with disease progression, patients again
of patients with MND enhances the uptake of interven-                   lost weight. Weight gain at three months post-PEG
tions, including gastrostomy[10,12,15,16]. In this study, pos-          has been previously described[5,6], but only one report[2]
sible PEG placement was discussed with the majority of                  has described ongoing weight gain over 12 mo post-
patients regardless of the presence of dysphagia or the                 gastrostomy. In that study, the patients’ baseline BMI
type of presentation of MND. However, the initiation                    prior to PEG insertion was lower (19.7 kg/m2) than in
of discussion by clinicians with a background in nutri-                 the present study (22.5 kg/m2) and this may explain the
tion significantly increased the patients’ uptake of PEG                discrepancy.
insertion. It is possible that clinicians familiar with MND                 The benefits of PEG in prolonging survival and main-
are more aware of the importance of nutrition adequacy                  taining weight did not reach statistical significance in this
in MND management and clinicians who are closely                        study, and may have reflected a bias in patient selection,
involved in management of PEG insertions are able to                    since patients who underwent PEG placement had more
better allay patients’ concerns. Furthermore, the NST                   severe weight loss. Several studies have concluded that
raised the topic significantly earlier than other clinicians            lower PWL prior to PEG placement is associated with
after diagnosis, which potentially allowed more time for                longer survival[5]. This suggests that early recognition of
the patients to adjust to the concept and undergo PEG                   weight loss may be important to optimize timing of the
insertion before their overall condition deteriorated.                  procedure[7]. Consequently PWL has been recommended
The time from PEG discussion to PEG insertion was                       as the best indicator of malnutrition and for the referral
similar between these two clinician groups suggesting                   for PEG, rather than BMI[5,12,16]. In the United Kingdom,
that patients were not simply referred to the NST when                  using ≥ 10% PWL from baseline has been preferred as
nutrition was inadequate. Overall survival of patients                  an indicator for PEG insertion instead of BMI in MND
undergoing PEG placement was similar irrespective of                    patients[17]. An Irish review suggested that PEG was war-
their referring clinician, suggesting that there was no                 ranted when 5%-10% of weight loss was observed in
difference in the patients with whom the procedure was                  MND patients[18], and Chiò et al[5] found that patients with
discussed to explain the difference in uptake.                          PWL ≥ 10% fared worse after PEG placement. Thus,
     The effect of PEG feeding on survival in patients                  the optimal timing remains uncertain[1,9]. In the current
with MND has been controversial. It is possible that dif-               study, an additional interesting finding was that, consistent
ferences in reported outcomes may reflect the different                 with other reports[18], patients experienced rapid weight
subtypes of MND undergoing the procedure as well as                     loss prior to death even with PEG nutrition. The reasons
the timing of the procedure[2-6,9]. In the current study,               for this are unclear. Although overall PEG feeding did not
there was a strong trend for prolonged survival after                   achieve 100% of the feeding goals (reflecting the desire to
PEG, but only in those patients with limb onset disease.                provide supplemental feeding/hydration in some patients,
The reasons for this are unclear. An early study[2] suggest-            and voluntary restriction in others in the terminal phase
ed that PEG prolonged survival significantly in MND                     of their illness) overall nutrition intake appeared adequate.
patients with bulbar symptoms, including those in whom                  It is possible that loss of muscle mass with disease pro-
dysphagia developed at any stage. However, in this study                gression[19] and increased energy requirement due to re-
the symptoms at presentation (i.e., bulbar or limb) were                spiratory insufficiency[18] may be important contributory
not defined[2]. Another case control study[5] found no                  factors.
significant survival benefit of the use of PEG, but PEG                     A further potential benefit from PEG insertion in
was associated with prolonged survival in their whole                   MND patients has been the potential to improve QoL[6],
study cohort and among those with bulbar onset; the                     but this has not been systematically assessed[1,2,3,17]. In
reasons for this discrepancy are unclear but may reflect                the current study, ALSFRS-R scores were maintained
an older patient profile in the current study. Forbes et                after the gastrostomy PEG. However, interpretation of
al[3] found no survival difference, and in their study limb             the data is limited, in part because of difficulties in ob-
onset patients fared worse than bulbar onset patients,                  taining comparable data between PEG and non-PEG
although the survival in this study was shorter than in the             patients. In addition, the comparison of QoL is likely
present study. Strong et al[4] found that gastrojejunostomy             to be affected by the severity of dysphagia before PEG
was associated with shorter survival in either bulbar onset             placement which in itself contributes to the probability

           WJG|www.wjgnet.com                                    6465                      November 28, 2012|Volume 18|Issue 44|
Zhang L et al . PEG outcomes in MND

of the procedure[8]. Also, adverse effects associated with                                     REFERENCES
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was not obtained, it seems unlikely that this impacted sig-                                         doscopic gastrostomy in ALS. ALS Percutaneous Endoscop-
                                                                                                    ic Gastrostomy Study Group. Neurology 1999; 53: 1123-1125
nificantly on patient care.                                                                    6    Vuolo G, Tirone A, Cesaretti M, Chieca R, Guarnieri A,
    In conclusion, initial discussion about PEG place-                                              Verre L, Greco G, Malentacchp M, Gianninp F, Pirrelli M,
ment with a nutrition support team increased the uptake                                             Dicosmo L. Evaluation of nutritional status before and after
of PEG in patients with MND. Gastrostomy insertion                                                  PEG placement in patients with motor neuron disease. Nutr
was associated with a strong trend towards longer sur-                                              Ther Metabol 2008; 26: 137-140
                                                                                               7    Mitsumoto H, Davidson M, Moore D, Gad N, Brandis M,
vival of patients with dysphagia who had limb onset but                                             Ringel S, Rosenfeld J, Shefner JM, Strong MJ, Sufit R, Ander-
not bulbar disease. In patients undergoing PEG place-                                               son FA. Percutaneous endoscopic gastrostomy (PEG) in pa-
ment there was initial stabilization of weight, but with                                            tients with ALS and bulbar dysfunction. Amyotroph Lateral
disease progression patient weight again decreased.                                                 Scler Other Motor Neuron Disord 2003; 4: 177-185
                                                                                               8    Miller RG, Jackson CE, Kasarskis EJ, England JD, Forshew
                                                                                                    D, Johnston W, Kalra S, Katz JS, Mitsumoto H, Rosenfeld
COMMENTS
COMMENTS                                                                                            J, Shoesmith C, Strong MJ, Woolley SC. Practice parameter
                                                                                                    update: the care of the patient with amyotrophic lateral
Background                                                                                          sclerosis: drug, nutritional, and respiratory therapies (an
Although the importance of percutaneous endoscopic gastrostomy (PEG) feed-                          evidence-based review): report of the Quality Standards
ing to facilitate nutrition support and reduce sarcopenia (potentially decreasing                   Subcommittee of the American Academy of Neurology.
the rate of disease progression) is well recognised in patients with motor neuron                   Neurology 2009; 73: 1218-1226
disease (MND), only a minority of suitable patients undergo the procedure. The                 9    Higo R, Tayama N, Nito T. Longitudinal analysis of pro-
reasons for this are likely to be multifactorial, but may include the availability of               gression of dysphagia in amyotrophic lateral sclerosis. Auris
information about the intervention. Multidisciplinary management of MND is as-                      Nasus Larynx 2004; 31: 247-254
sociated with better uptake, but the reasons for this are uncertain.                           10   Neurosciences and the Senses Health Network, Motor Neu-
Research frontiers                                                                                  rone Disease Project Group, Western Australia. Department
Currently only supportive therapy such as enteral nutrition is available for MND,                   of Health, Health Networks Branch. Motor neurone disease
but who should receive this and when is unclear. Increased knowledge on                             services for Western Australia. Subiaco, Western Australia:
which sub-groups of patients are assisted by PEG feeding and the timing of                          Health Networks Branch, 2008
the gastrostomy insertion allows patients and clinicians to make more informed                 11   Miller RG, Jackson CE, Kasarskis EJ, England JD, Forshew
decisions to optimize the benefits.                                                                 D, Johnston W, Kalra S, Katz JS, Mitsumoto H, Rosenfeld J,
Innovations and breakthroughs                                                                       Shoesmith C, Strong MJ, Woolley SC. Practice parameter up-
Patients who received counseling from a Nutrition Support Professional were                         date: the care of the patient with amyotrophic lateral sclero-
more likely to undergo the procedure. Interestingly the patients with peripheral                    sis: multidisciplinary care, symptom management, and cog-
onset of disease had a trend to longer survival consistent with the concept that                    nitive/behavioral impairment (an evidence-based review):
muscle mass is preserved by adequate nutrition.                                                     report of the Quality Standards Subcommittee of the Ameri-
                                                                                                    can Academy of Neurology. Neurology 2009; 73: 1227-1233
Applications                                                                                   12   Rio A, Cawadias E. Nutritional advice and treatment by dieti-
The findings support the use of multidisciplinary teams in this disease and also
                                                                                                    tians to patients with amyotrophic lateral sclerosis/motor neu-
provide a possible rationale for the findings of better survival in units where this                rone disease: a survey of current practice in England, Wales,
is undertaken.                                                                                      Northern Ireland and Canada. J Hum Nutr Diet 2007; 20: 3-13
Terminology                                                                                    13   Chiò A, Bottacchi E, Buffa C, Mutani R, Mora G. Positive
MND is a progressive neurological condition of unknown aetiology character-                         effects of tertiary centres for amyotrophic lateral sclerosis
ized by relentless progression to respiratory failure.                                              on outcome and use of hospital facilities. J Neurol Neurosurg
Peer review                                                                                         Psychiatry 2006; 77: 948-950
Well written manuscript (retrospective study) regarding PEG tube utilization                   14   Cedarbaum JM, Stambler N, Malta E, Fuller C, Hilt D,
in patients with MND. It provides some new inside to early PEG placement in                         Thurmond B, Nakanishi A. The ALSFRS-R: a revised ALS
patients with malnutrition and MND.                                                                 functional rating scale that incorporates assessments of

                WJG|www.wjgnet.com                                                      6466                        November 28, 2012|Volume 18|Issue 44|
Zhang L et al . PEG outcomes in MND

     respiratory function. BDNF ALS Study Group (Phase III). J                17   Leigh PN, Abrahams S, Al-Chalabi A, Ampong MA, Gold-
     Neurol Sci 1999; 169: 13-21                                                   stein LH, Johnson J, Lyall R, Moxham J, Mustfa N, Rio A,
15   Traynor BJ, Alexander M, Corr B, Frost E, Hardiman O. Ef-                     Shaw C, Willey E. The management of motor neurone dis-
     fect of a multidisciplinary amyotrophic lateral sclerosis (ALS)               ease. J Neurol Neurosurg Psychiatry 2003; 74 Suppl 4: iv32-iv47
     clinic on ALS survival: a population based study, 1996-2000.             18   Hardiman O. Symptomatic treatment of respiratory and
     J Neurol Neurosurg Psychiatry 2003; 74: 1258-1261                             nutritional failure in amyotrophic lateral sclerosis. J Neurol
16   Rio A, Ellis C, Shaw C, Willey E, Ampong MA, Wijesekera                       2000; 247: 245-251
     L, Rittman T, Nigel Leigh P, Sidhu PS, Al-Chalabi A. Nu-                 19   The Motor Neurone Disease Australia Publication Review
     tritional factors associated with survival following enteral                  Committee. Motor neurone disease aspects of care: for the
     tube feeding in patients with motor neurone disease. J Hum                    primary health care team. 3rd ed. Gladesville NSW: MND
     Nutr Diet 2010; 23: 408-415                                                   Australia, 2011

                                                                                   S- Editor Gou SX     L- Editor Webster JR     E- Editor Lu YJ

            WJG|www.wjgnet.com                                         6467                        November 28, 2012|Volume 18|Issue 44|
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