weight changes during inpatient refeeding of underweight eating disorder patients

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RESEARCH ARTICLE Weight Changes During Inpatient Refeeding of Underweight Eating Disorder Patients Susan Hart 1 * , Suzanne Abraham 2 , Richard Franklin 3 & Janice Russell 4 1 Accredited Practising Dietitian, Department of Obstetrics and Gynaecology, University of Sydney, Royal North Shore Hospital, Australia 2 Associate Professor, Department of Obstetrics and Gynaecology, University of Sydney, Royal North Shore Hospital, Australia 3 Conjoint Senior Research Fellow, School of Medicine-Central Clinical Division, University of Queensland 4 Professor, Department of Psychological Medicine, University of Sydney, The Northside Clinic, Australia Abstract Aim: To describe patterns of weight change in patients admitted to a specialised eating disorder program with established protocols for inpatient refeeding. Methods: Weight records between January 2000 and December 2006 were categorised using Body Mass Index (BMI) at first admission (BMI ranges < 14.0, 14.1–17.49, 17.5–18.9 kg/m 2 ). Total weight gained, number of days of inpatient treatment and rate of weekly weight gain were examined. Results: In total there were 247 patients representing 414 admissions. The rate of weight gain was 0.77, 0.63 and 0.53 kg/week, respectively, for each BMI group. Twenty patients (8.1%) in the refeeding program did not gain weight. Conclusion: Weight gain in underweight patients is highly variable. A greater understanding of the processes that contribute to weight gain, and establishment of best practice in achieving weight gain in patients needs to be determined. This data provide detailed information about expectations for refeeding without artificial feeding. Copyright # 2010 John Wiley & Sons, Ltd and Eating Disorders Association. Keywords anorexia nervosa; weight; inpatient; refeeding; dietitian *Correspondence Susan Hart, Missenden Psychiatric Unit. Dept. of Psychiatry, Royal Prince Alfred Hospital, Camperdown, NSW, 2060, 02 8587 0200. Email: [email protected] Published online 20 December 2010 in Wiley Online Library (wileyonlinelibrary.com) DOI: 10.1002/erv.1052 Introduction The refeeding of underweight patients is currently a challenge for clinicians and is perhaps more art than science. There are practice guidelines and position statements on management of anorexia nervosa (American Dietetic Association, 2001; Beumont et al., 2004; Gowers et al., 2004; Wakefield & Williams, 2009; Winston et al., 2005; Yager et al., 2006) which provide direction on refeeding but lack robust scientific evidence to support their recommendations. The National Institute of Clinical Excellence (NICE) guide- lines comment that the approach to refeeding varies between centres and countries (Gowers et al., 2004). Literature highlights that there is a failure in the field to provide clinical trials that examine the optimal approach to re-nutrition (Bulik, Berkman, Brownley, Sedway, & Lohr, 2007) and a lack of understanding of the complex interplay of biological and psychological factors in relation to weight gain (Steinhausen, 390 Eur. Eat. Disorders Rev. 19 (2011) 390–397 ß 2010 John Wiley & Sons, Ltd and Eating Disorders Association.

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RESEARCH ARTICLE

Weight Changes During Inpatient Refeeding ofUnderweight Eating Disorder PatientsSusan Hart1*, Suzanne Abraham2, Richard Franklin3 & Janice Russell4

1

Accredited Practising Dietitian, Department of Obstetrics and Gynaecology, University of Sydney, Royal North Shore Hospital, Australia

2Associate Professor, Department of Obstetrics and Gynaecology, University of Sydney, Royal North Shore Hospital, Australia

3Conjoint Senior Research Fellow, School of Medicine-Central Clinical Division, University of Queensland

4Professor, Department of Psychological Medicine, University of Sydney, The Northside Clinic, Australia

Abstract

Aim: To describe patterns of weight change in patients admitted to a specialised eating disorder program with

established protocols for inpatient refeeding.

Methods:Weight records between January 2000 and December 2006 were categorised using BodyMass Index (BMI)

at first admission (BMI ranges < 14.0, 14.1–17.49, 17.5–18.9 kg/m2). Total weight gained, number of days of

inpatient treatment and rate of weekly weight gain were examined.

Results: In total there were 247 patients representing 414 admissions. The rate of weight gain was 0.77, 0.63 and

0.53 kg/week, respectively, for each BMI group. Twenty patients (8.1%) in the refeeding program did not gain

weight.

Conclusion: Weight gain in underweight patients is highly variable. A greater understanding of the processes that

contribute to weight gain, and establishment of best practice in achieving weight gain in patients needs to be

determined. This data provide detailed information about expectations for refeeding without artificial feeding.

Copyright # 2010 John Wiley & Sons, Ltd and Eating Disorders Association.

Keywords

anorexia nervosa; weight; inpatient; refeeding; dietitian

*Correspondence

Susan Hart, Missenden Psychiatric Unit. Dept. of Psychiatry, Royal Prince Alfred Hospital, Camperdown, NSW, 2060, 02 8587 0200.

Email: [email protected]

Published online 20 December 2010 in Wiley Online Library (wileyonlinelibrary.com) DOI: 10.1002/erv.1052

Introduction

The refeeding of underweight patients is currently a

challenge for clinicians and is perhaps more art than

science. There are practice guidelines and position

statements on management of anorexia nervosa

(American Dietetic Association, 2001; Beumont et al.,

2004; Gowers et al., 2004; Wakefield & Williams, 2009;

Winston et al., 2005; Yager et al., 2006) which provide

direction on refeeding but lack robust scientific

390 Eur. Eat. Disorders Rev. 19 (2011)

evidence to support their recommendations. The

National Institute of Clinical Excellence (NICE) guide-

lines comment that the approach to refeeding varies

between centres and countries (Gowers et al., 2004).

Literature highlights that there is a failure in the field

to provide clinical trials that examine the optimal

approach to re-nutrition (Bulik, Berkman, Brownley,

Sedway, & Lohr, 2007) and a lack of understanding of

the complex interplay of biological and psychological

factors in relation to weight gain (Steinhausen,

390–397 � 2010 John Wiley & Sons, Ltd and Eating Disorders Association.

S. Hart et al. Weight Changes During Refeeding

Grigoroiu-Serbanescu, Boyadjieva, Neumarker, &

Winkler Metzke, 2008).

Published recommendations of average weekly weight

gain in inpatient treatment range from 0–0.5 kilograms

per week (kg/week): (Herzog, Zeeck, Hartmann,

& Nickel, 2004; Okamoto et al., 2002); 0.5–1.0 kg/week

(Castro, Gila, Puig, Rodriguez, & Toro, 2004;

Gowers et al., 2004; Lay, Jennen-Steinmetz, Reinhard,

& Schmidt, 2002) and greater than 1.0 kg/week

(Davies & Jaffa, 2005; Treat, Gaskill, McCabe, Ghinassi,

Luczak, & Marcus, 2005). The American Psychiatric

Association (APA) guidelines recommend 0.9–1.4 kg/

week with ‘expected rates of controlled weight gain’

(Yager et al., 2006), however there are only a few

descriptions of actual weight gain in inpatient treat-

ment. The literature is comprised of descriptions of

practice based on clinical treatment in particular

facilities (Okamoto et al., 2002; Zuercher, Cumella,

Woods, Eberly, & Carr, 2003); case studies (Latzer,

Eysen-Eylat, & Tabenkin, 2000; Mehler &Weiner, 2007;

Neiderman, Zarody, Tattersall, & Lask, 2000) or studies

with small sample sizes (Arii, Yamashita, Kinoshita,

Shimizu, Nakamura, & Nakajima, 1996; Silber, Robb,

Orrell-Valente, Ellis, Valadez-Meltzer, & Dadson, 2004)

and there are only a few descriptions of patterns

of weight change in Anorexia Nervosa (AN) subjects

with a sample size greater than 100 (Beumont,

Al-Alami, & Touyz, 1988; Diamanti et al., 2008;

Zuercher et al., 2003). Evidence of how achievable

described weight targets are in clinical settings is

unclear as there is frequently limited detail to aid in

translation of treatment practices into other settings

(Davies & Jaffa, 2005). There may be only one or

two weight points described rather than a series

(Bowers & Ansher, 2008), detail of how mean weight

changes are calculated is omitted (Holtkamp, Hebeb-

rand, Mika, Heer, Heussen, & Herpertz- Dahlmann,

2004) as is detail on length of stay (Solanto, Jacobson,

Heller, Golden, & Hertz, 1994) or what feeding

methods are used to achieve weight outcomes

(Mewes, Tagay, & Senf, 2008). There are only a

few studies that examine longer-term effectiveness of

nutritional rehabilitation (Baran, Weltzin, & Kaye,

1995; Bowers & Ansher, 2008; Castro et al., 2004;

Lay et al., 2002).

It is important to understand factors affecting weight

gain as weight gain is a surface variable for the core

elements of treatment response (Steinhausen et al.,

2008), and ‘The patients’ weight chart under treatment

Eur. Eat. Disorders Rev. 19 (2011) 390–397 � 2010 John Wiley & Sons, Ltd and

conditions is a valuable reflection of her temperament

and conflicts’ (Crisp, Mayer, & Bhat, 1986). Due to the

severe psychological, social and financial impact of AN

and its sequelae there should be interest in factors that

may be helpful in predicting outcome (Lowe, Zipfel,

Buchholz, Dupont, Reas, & Herzog, 2001). Zipfel has

shown that inadequate weight gain during the first

admission predicts a poor outcome (Zipfel, Lowe, Reas,

Deter, & Herzog, 2000). In order to obtain better

clinical outcomes in the process of refeeding, it is

essential that patterns of weight restoration in the

short and long term are examined in greater detail. In a

disorder that is fundamentally about under-nutrition,

its effects and treatment, there is little information to

direct best practice.

Aim

The aim of this paper is to describe weight changes in a

large, well described clinical sample of low weight eating

disorder patients (Body Mass Index (BMI) less than

19.0 kg/m2) who present for treatment to a specialist

inpatient facility in Sydney, Australia with established

protocols for refeeding.

Methods

Consecutive weight records of female patients with

eating disorders admitted for treatment between

1 January 2000 and 31 December 2006 were examined.

The hospital is a private psychiatric hospital experi-

enced in treating eating disorder patients’ older than

14 years. Patients were weighed at admission and then

three times weekly (Monday, Wednesday and Friday)

over the course of admission and detailed weight

records were kept as part of standard care. Weigh-in

was compulsory before breakfast, supervised by

experienced nursing staff on calibrated balance beam

scales with the patient in a hospital gown.

The sample was comprised of patients whose BMI

was less than 19.0 kg/m2 at the first admission for

treatment to the facility in the study period. The

sample was analysed as a total sample, and categorised

into three separate BMI groups to see if there were any

differences in weight change, or patient descriptives

by BMI group. BMI categories were less than or

equal to 14.0 kg/m2 (severely underweight), BMI¼14.01–17.49 kg/m2 (moderately underweight) which

included restricting and purging AN, and BMI¼ 17.5–

Eating Disorders Association. 391

Weight Changes During Refeeding S. Hart et al.

18.99 kg/m2 (slightly underweight) which by definition

included patients with Bulimia Nervosa (BN) and

Eating Disorder Not Otherwise Specified (EDNOS).

BN patients were included if they were underweight,

BMI< 19.0 kg/m2. A cut off of BMI 19.0 kg/m2 rather

than 17.5 kg/m2 was chosen because while these

patients do not meet DSM IV criteria for AN they

are underweight as a consequence of their behaviour

and would benefit from weight gain. The sample

was predominantly Caucasian (93.5%; n¼ 231) and

adult (mean age¼ 20.7 years (SD¼ 7.1)) so this

definition of underweight was considered clinically

appropriate. Patients with a BMI between 17.5 and

19.0 kg/m2 are not frequently reported on, however

they are often admitted for inpatient treatment, so one

research aim was to examine how patterns of weight

gain in this group may differ from AN diagnosed

patients.

All patients were placed on the refeeding program

of the unit aiming for weight gain of 1.0 kg/week to a

minimum BMI of 19.0 kg/m2 and were assessed as

medically stable prior to admission. A refeeding

program of three meals and three snacks without any

form of artificial feeding (nasogastric or parenteral

nutrition) was used. The refeeding regime was designed

to be an age appropriate ‘normal’ diet similar to

what their peers might eat, as judged by the dietitian

with discussion from the team. Food alone was

most commonly used, however, oral liquid supple-

ments (OLS) were sometimes included in underweight

patients in order to meet energy requirements if they

had difficulty achieving weight gain targets or tolerating

the volume of food required for weight gain. The aim

was to achieve a gain of 1.0 kg/week, with or without

OLS. The nutrient composition of the prescribed

refeeding regime for patients feeding on food only

(n¼ 318) was a mean energy intake of 1980 kilocalories

(8285 kilojoules) with 20.5% of energy from protein,

47% from carbohydrate and 32.5% from fat. Between

one to four OLS were added to meal plans for

96 patients the mean energy prescription for an OLS

regime of 2520 kilocalories (10530 kilojoules), 19% of

energy provided from protein, 46.5% from carbo-

hydrate and 34.5% from fat. Three patients required

the addition of four supplements which provided a

maximum refeeding regime of 2810 kilocalories

(11745 kilojoules).

Each patient had an individualised meal plan

reviewed weekly by an experienced dietitian, and

392 Eur. Eat. Disorders Rev. 19 (2011)

registered nurses supervised all meals, usually with

one nurse for 6–8 patients consistent with an earlier

study of Australian eating disorder units (Hart,

Abraham, Luscombe, & Russell, 2008). There were

different levels of meal supervision for patients, with the

highest level of supervision for newly admitted patients

and for those struggling to complete meals, achieve

weight gain targets or comply with aspects of the

program such as cessation of weight losing behaviours.

Once progress was demonstrated including achieving

weight targets, or when patients were preparing for

discharge they were given increased autonomy by

eating without supervision, eating outside of hospital

and being given opportunities to eat at home with their

family.

As the hospital is privately funded, it was necessary to

adopt a strategy that maximised time in hospital for

each patient. Funding generally did not cover patients

for extended admissions longer than 8–10 weeks.

Therefore a policy was adopted where patients were

discharged after 8 weeks, provided with intensive

outpatient support then readmitted within four weeks if

weight trajectory as an outpatient was unsatisfactory.

Total weight gain, rate of weekly weight gain

(kg/week) and days of treatment during each admission

and in total over the 6 year period were calculated. Total

net weight gained over all admissions was calculated

by taking first weight of the first admission (ADM1st)

from the last weight of the final discharge (DCFinal).

Rate of weekly weight gain for the first admission was

calculated by: total weight gain ADM1st/[(length of stay

in days)�7], and rate of weekly gain for all treatment was

calculated by: total net weight gain over all admissions/

[(cumulative treatment days)�7]. The number of

previous inpatient admissions each patient had prior

to their first admission to this treatment facility was

recorded.

Diagnoses were made by the Medical Director of the

program using the Diagnostic and Statistical Manual of

Mental Disorders, version IV (APA, 1994). Abnormal

eating and weight losing behaviours were assessed

at admission by the EEE-C (Eating and Exercise

Examination, Computerised), which measures the

presence of the behaviour in the 28 days preceding

admission (Abraham & Lovell, 1999). ANOVA was

used for analysis of continuous variables and BMI

groups were compared as categorical variables using x2,

using SPSS 15.0, Graduate version (SPSS Inc., 1989–

2006). When running ANOVA or x2 statistics, all three

390–397 � 2010 John Wiley & Sons, Ltd and Eating Disorders Association.

S. Hart et al. Weight Changes During Refeeding

groups were entered into the analyses, i.e. three groups

were compared rather than two.

Results

There were 247 female patients representing 414

admissions admitted for refeeding and who met the

inclusion criteria for this sample. Excluded from the

study were males, as they were small in number (n¼ 13,

20 admissions) and 15 patients with chronic medical

illnesses (30 admissions) such as Type-1 diabetes

and Coeliac Disease. Patients who were discharged

from inpatient treatment with a length of stay less than

10 days did not have any weight data collected and were

excluded.

For 179 (73%) patients, it was their first ever admission

for inpatient treatment for an eating disorder. One

hundred and forty nine patients (60%) had only one

admission during the study period, 92 patients (37%)

had two to four admissions (228 occasions of care),

while six patients (2%) had five or more admissions (37

occasions of care). Tables 1 and 2 show the descriptive

and behavioural data of this sample including the total

weight gained over all inpatient treatment days.

The severely underweight group gained significantly

more weight between first admission and discharge

from their last admission (F¼ 10.8, p� .001), and

significantly more weight, when weight gain at each

occasion of care was totalled (F¼ 10.4, p� .001).

However, a longer admission time was required to

achieve this weight gain; so when the rate of weight gain

in kg/week was calculated between the first and

last admission this result was less significant (F¼ 3.4,

p� .05).

Approximately one third of patients with BMI<¼17.49 kg/m2 voluntarily included OLS to assist in

meeting weight gain targets while only one patient

chose to have OLS in the slightly underweight group

(BMI¼ 17.5–18.9 kg/m2).

In total there were 70 patients who purged in the

sample of 247 patients. There were three patients with

AN purging in the severely underweight group and

42 patients who purged in the moderate underweight

group which was significant (F¼ 5.1, p� .05).

There were four deaths in the sample of patients

representing six occasions of care. These patients were

not currently in any eating disorder treatment when

they died. At their first admission to the current clinic,

all four patients had multiple unsuccessful admissions

Eur. Eat. Disorders Rev. 19 (2011) 390–397 � 2010 John Wiley & Sons, Ltd and

to other facilities. Three patients died from complications

of malnutrition. During treatment they had a mean

admission BMI of 13.7 kg/m2, mean discharge BMI at last

admission was 14.8 kg/m2, mean number of admissions

to the current clinic was 1.7 and total days of current

inpatient treatment was 89.3 days. A fourth patient died

from unknown causes and was in the normal weight

range when discharged from the clinic.

Some patients did not respond to inpatient weight

restoration and lost weight in hospital despite efforts

to improve weight and nutritional status. Nineteen

patients lost weight over all admissions at a rate of

�0.17 kg/week (a total loss of –0.83 kg over 37.3 days)

and 69 patients gained weight minimally between 0

and 0.5 kg/week, at a mean rate of 0.33 kg/week (total

gain of 4.5 kg over 88.9 days). These rates were not

significantly different between the BMI groups.

In each BMI group there were 48%, 78% and 73% of

patients respectively whom it was their first ever

admission for treatment and this was statistically

significant (x2¼ 11.4, p� .01), with lower weight patients

having a greater number of previous admissions.

Discussion

Expert consensus in the management of eating disorder

patients agrees that the initial priority of treatment is

to reverse the effects of under-nutrition and starvation

and aim for a return to normal eating (Beumont et al.,

2004; Gowers et al., 2004; Yager et al., 2006). However,

there are limited descriptions of patterns of weight gain

during inpatient treatment and the best way of

achieving lasting and permanent changes in the weight

of eating disorder patients.

Approximately one-third of patients (n¼ 95) (see

Tables 1 and 2) with a BMI less than 17.5 kg/m2 chose

OLS as a mid meal snack with their meal plan

rather than food alone. A survey of Australian specialist

dietitians recommended OLS as the preferred method

of increasing energy intake for refeeding in preference

to NG feeding or TPN, which were not considered

ideal methods (Hart et al., 2008). In this sample, there

were no differences in the rate of weight gain for

patients with or without OLS (Table 3); however,

patients choosing OLS gained slightly more weight but

took significantly longer to achieve their weight target.

Whether this is a result of increased metabolic difficulty

in gaining weight, difficulty tolerating the volume of

food necessary for weight gain or a marker of

Eating Disorders Association. 393

Table 1 Descriptive information on all underweight patients (BMI<19.0 kg/m2)

Total

M (SD)

Severe

�14.0

M (SD)

Moderate

14.1–17.49

M (SD)

Slightly

17.5–18.9

M (SD)

N 247 33 151 63

All admissions 414 58 266 90

Mean number of admissions 1.7 (1.1) 1.8 (1.1) 1.8 (1.2) 1.43 (0.7) F¼ 5.6, p� . 01

Age at ADM1st (years) 20.7 (7.1) 21.3 (6.4) 20.3 (6.5) 21.4 (8.7) NS

Weight at ADM1st (kg) 43.9 (6.1) 35.2 (3.6) 43.2 (4.3) 50.2 (3.9) F¼149.5, p� . 001

Weight at DCFinal (kg) 48.1 (6.3) 41.9 (6.1) 47.3 (5.4) 53.0 (4.8) F¼ 50.3, p� . 001

BMI at ADM1st 16.1 (1.8) 13.0 (0.9) 15.9 (1.0) 18.2 (0.4) NS

BMI at DCFinal 17.6 (2.0) 15.5 (2.2) 17.4 (1.7) 19.2 (1.1) F¼ 55.9, p� . 001

BMI change (ADM1st to DCFinal) 1.5 (1.5) 2.5 (2.0) 1.5 (1.5) 1.0 (1.1) F¼ 10.9, p� . 001

Total net weight gain (kg) (ADM1st to DCFinal) 4.2 (4.0) 6.7 (5.2) 4.1 (3.9) 2.8 (3.0) F¼ 10.8, p� . 001

Sum of all weight gained each ADM (kg) 5.5 (5.3) 8.1 (5.8) 5.9 (5.6) 3.3 (3.4) F¼ 10.4, p� . 001

Rate gain (kg/week) (ADM1st to DCFinal) 0.62 (0.43) 0.77 (0.36) 0.63 (0.43) 0.53 (0.46) F¼ 3.4, p� .05

Length of treatment ADM1st (days) 40.1 (19.4) 46.5 (17.8) 42.1 (20.6) 31.7 (14.5) F¼9.1, p� .001

Sum of all treatment days 67.4 (62.1) 80.2 (62.0) 73.8 (69.8) 45.4 (29.2) F¼ 5.7, p� .01

Weight Changes During Refeeding S. Hart et al.

differences in motivation in this group is unclear, and

would be worth further research. Use of OLS was not

randomised in this sample, rather they were included

when patients had difficulty meeting their weight targets,

so it is not possible to draw too many conclusions from

this result.

Few studies assess whether weight is retained in

the long term after an inpatient admission or how

Table 2 Behaviours and diagnosis of all underweight patients (BMI<19.0 kg/m2)

Total

M (SD)

Severe

�14.0

M (%)

Moderate¼14.1–17.49

M (%)

Slightly¼17.5–18.9

M (%)

N 247 33 151 63

Purging ADM1st 70 3 (9%) 42 (28%) 25 (40%) x2¼ 10.0, p� .01

Objective Binge Eating ADM1st 28 1 12 15 x2¼13.7, p� .001

Diagnosis ADM1st

AN-R 139 30 (91%) 109 (72%) 0

X2¼ 5.1, p< .05

AN-P 45 3 (9%) 42 (28%) 0

EDNOS 48 0 0 48 (76%)

BN 15 0 0 15 (24%)

OLS (All admissions) n (% yes) 96 (23%) 19 (33%) 76 (29%) 1 (1%) x2¼31.5, p� .001

Is this first ever ADM? n (% yes) 179 (72%) 16 (48%) 117 (78%) 46 (73%) x2¼ 11.4, p� .01

Rate of gain¼ 0 - 0.5 kg/week

(all admissions)

69 7 44 18 NS

Weight loss (all admissions) 19 1 9 9 NS

Deaths 4 2 (7%) 1 (2%) 1 (2%) NS

NS¼Not significant.ADM1st¼weight of first admission 2000-2006.DCFinal¼ last weight of final admission 2000-2006.

394 Eur. Eat. Disorders Rev. 19 (2011) 390–397 � 2010 John Wiley & Sons, Ltd and Eating Disorders Association

initial changes in weight during treatment may predict

longer-term outcome. Rate of weight gain was one of the

variables related to readmission in a study of 101 AN

patients (Castro et al., 2004). Castro-Fornieles et al., 2007

described a sample in whichmean weight gain was 0.9 kg/

week, however 25% failed to maintain weight during

outpatient treatment after being totally weight recovered

with a lower rate of weight increase during treatment

.

Table 3 Comparison of AN patients refeeding with and without OLS

OLS

M (SD)

No

OLS

M (SD)

Total

M (SD)

N 96 318 414

ADM1st BMI (kg/m2) 15.1 (1.4) 16.6 (2.2) 16.3 (2.1) F¼ 39.1, p� .001

DCFinal BMI (kg/m2) 16.9 (1.5) 17.8 (2.1) 17.6 (2.0) F¼9.5, p� .01

Total Gain (ADM 1st) (kg) 3.9 (2.1) 3.2 (2.7) 3.3 (2.6) F¼5.4, p� .05

Rate of weight gain (ADM 1st) (kg/week) 0.60 (0.32) 0.60 (0.50) 0.60 (0.5) NS

Treatment days (all admissions) 48.7 (21.3) 38.0 (20.4) 40.4 (21.1) F¼ 19.9, p� .001

NS¼Not significant

S. Hart et al. Weight Changes During Refeeding

predicting readmission in this sample. It has been

suggested that motivation to change is the variable that

best predicts weight maintenance nine months after

discharge from inpatient care and that patients, own

psychological variables seem to be more relevant to

short term outcome (Castro-Fornieles et al., 2007).

In a study of 41 AN adolescents it was concluded that

response to initial hospitalisation in terms of weight

gain may be an important predictor of longer-term

maintenance of outcome, and this is more important

than initial weight or initial hospital length of stay

(Lock & Litt, 2003). Understanding the dynamics of

weight gain is clearly helpful in providing effective

clinical interventions, and there is a need to change

standard admission treatment programs in patients

who present a higher risk of readmission (Castro et al.,

2004).

There needs to bemore research on identifying patients

who respond best to inpatient weight restoration

because our results show that some patients do not

respond to inpatient weight restoration and lose weight

in hospital or gain weight minimally as in the case of

88 patients. These patients may do equally as well or

poorly in terms of weight gain in outpatient treatment.

As patterns of weight change are not often reported or

only mean weight change of samples are reported, it is

unclear whether this is a peculiar or usual finding

during weight restoration.

Further analysis of patients who retain all weight

gained in treatment versus patients who are unable to

retain this weight may be useful to predict longer-term

recovery from an eating disorder. Research needs to

examine what the differences are between those patients

who do well in terms of nutritional rehabilitation and

weight change and those who do poorly. Characteristics

of patients who respond and do not respond to

Eur. Eat. Disorders Rev. 19 (2011) 390–397 � 2010 John Wiley & Sons, Ltd and Eating Disorders Association. 395

inpatient treatment should be identified prospectively

rather than retrospectively, and different interventions

should be tailored to these patients, rather than a one

size fits all approach to nutritional rehabilitation and

refeeding.

Conclusion

Patterns of weight change in eating disorder patients

are infrequently described. How much weight is gained

(or lost in treatment) or the best way of achieving

nutritional rehabilitation and weight outcomes is

unknown.

Future research should examine these issues looking

at weight gain in the short term and retention of weight

gained over the long term as well as identifying patients

who are responders to inpatient treatment. Patterns

of weight change in treatment and best practice in

achieving weight gain are a forgotten but important

aspect of treatment of the eating disorder patient.

Limitations of this study are that it is a naturalistic

study that examines voluntary presentations for

treatment to a private clinic for nutritional rehabilita-

tion. Due to the fact that all patients were privately

funded to attend treatment and there were no

involuntary admissions, this sample is unlikely to be

representative of eating disorder inpatient treatment

in general. Whether this data on weight change is

transferable to other treatment settings where different

funding arrangements, feeding methods and thera-

peutic milieus are employed is not known.

This study examined presentations to one clinic over

a 6-year period, and attempted to measure all previous

inpatient eating disorder admissions. However, it is

unclear whether the final admission for treatment to

this clinic was the final treatment ever or whether they

Weight Changes During Refeeding S. Hart et al.

had subsequent admissions elsewhere, particularly in

149 patients who presented only once for treatment to

the clinic.

396 Eur. Eat. Disorders Rev. 19 (2011)

The authors of this paper are not making recom-

mendations about feedingmethods but highlighting the

lack of knowledge in this area.

References

Abraham, S., & Lovell, N. (1999). Research and clinical

assessment of eating and exercise behaviour. Hospital

Medicine, 60, 481–485.

ADA. (2001). Position of the American Dietetic Associ-

ation: Nutrition intervention in the treatment of

anorexia nervosa, bulimia nervosa, and eating dis-

orders not otherwise specified (EDNOS): American

Dietetic Association.

APA. (1994). Diagnostic and statistical manual of mental

disorders (4th edition). Washington, DC: American

Psychiatric Association.

Arii, I., Yamashita, T., Kinoshita, M., Shimizu, H., Naka-

mura, M., & Nakajima, T. (1996). Treatment for

inpatients with anorexia nervosa: Comparison of

liquid formula with regular meals for improvement

from emaciation. Psychiatry & Clinical Neurosciences,

50, 55–59.

Baran, S. A., Weltzin, T. E., & Kaye, W. H. (1995). Low

discharge weight and outcome in anorexia nervosa.

American Journal of Psychiatry, 152, 1070–1072.

Beumont, P., Al-Alami, M., & Touyz, S. (1988). Relevance

of a standard measurement of undernutrition to the

diagnosis of anorexia nervosa: Use of Quetelet’s Body

Mass Index (BMI). International Journal of Eating

Disorders, 7, 399–405.

Beumont, P., Hay, P., Beumont, D., Birmingham, L.,

Derham, H., Jordan, A., et al. (2004). Australian

and New Zealand clinical practice guidelines for the

treatment of anorexia nervosa. [see comment][erra-

tum appears in Aust N Z J Psychiatry. 2004Nov.–Dec.;

38 (11–12): 987]. Australian & New Zealand Journal of

Psychiatry, 38, 659–670.

Bowers, W. A., & Ansher, L. S. (2008). The effectiveness

of cognitive behavioral therapy on changing eating

disorder symptoms and psychopathy of 32

anorexia nervosa patients at hospital discharge and

one year follow-up. Annals of Clinical Psychiatry, 20,

79–86.

Bulik, C., Berkman, N., Brownley, K., Sedway, J., & Lohr,

K. (2007). Anorexia nervosa treatment: A systematic

review of randomized controlled trials. International

Journal of Eating Disorders, 40, 310–320.

Castro-Fornieles, J., Casula, V., Saura, B., Martinez, E.,

Lazaro, L., Vila, M., et al. (2007). Predictors of weight

maintenance after hospital discharge in adolescent

anorexia nervosa. International Journal of Eating Dis-

orders, 40, 129–135.

Castro, J., Gila, A., Puig, J., Rodriguez, S., & Toro, J.

(2004). Predictors of rehospitalization after total

weight recovery in adolescents with anorexia nervosa.

International Journal of Eating Disorders, 36, 22–30.

Crisp, A., Mayer, C., & Bhat, A. V. (1986). Patterns of

weight gain in a group of patients treated for anorexia

nervosa. International Journal of Eating Disorders, 5,

1007–1024.

Davies, S., & Jaffa, T. (2005). Patterns of weekly weight

gain during inpatient treatment for adolescents with

anorexia nervosa. European Eating Disorders Review,

13, 273–277 (275).

Diamanti, A., Basso, M. S., Castro, M., Bianco, G., Ciacco,

E., Calce, A., et al. (2008). Clinical efficacy and safety

of parenteral nutrition in adolescent girls with anor-

exia nervosa. [see comment]. Journal of Adolescent

Health 42, 111–118.

Gowers, S., Pilling, S., Treasure, J., Fairburn, C., Palmer,

B., Bell, L., et al. (2004). Eating disorders. Core inter-

ventions in the treatment and management of anor-

exia nevosa, bulimia nervosa and related eating

disorders (No. CG9): National Institute for Clinical

Excellence.

Hart, S., Abraham, S., Luscombe, G., & Russell, J. (2008).

Eating disorder management in hospital patients:

Current practice among dietitians in Australia. Nutri-

tion and Dietetics, 65, 16–22.

Herzog, T., Zeeck, A., Hartmann, A., & Nickel, T. (2004).

Lower targets for weekly weight gain lead to better results

in inpatient treatment of anorexia nervosa: A pilot study.

European Eating Disorders Review, 12, 164–168.

Holtkamp, K., Hebebrand, J., Mika, C., Heer, M., Heus-

sen, N., & Herpertz-Dahlmann, B. (2004). High serum

leptin levels subsequent to weight gain predict

renewed weight loss in patients with anorexia nervosa.

Psychoneuroendocrinology, 29, 791–797.

Latzer, Y., Eysen-Eylat, D., & Tabenkin, H. (2000). A case

report: Treatment of severe anorexia nervosa with

home total parenteral hyperalimentation. Inter-

national Journal of Eating Disorders, 27, 115–118.

Lay, B., Jennen-Steinmetz, C., Reinhard, I., & Schmidt,

M. H. (2002). Characteristics of inpatient weight gain

in adolescent anorexia nervosa: Relation to speed of

relapse and re-admission. European Eating Disorders

Review, 10, 22–40.

390–397 � 2010 John W

Lock, J., & Litt, I. (2003). What predicts maintenance of

weight for adolescents medically hospitalized for anor-

exia nervosa? Eating Disorders. The Journal of Treat-

ment & Prevention, 11, 1–7.

Lowe, B., Zipfel, S., Buchholz, C., Dupont, Y., Reas, D. L.,

& Herzog, W. (2001). Long-term outcome of anorexia

nervosa in a prospective 21-year follow-up study. [see

comment]. Psychological Medicine, 31, 881–890.

Mehler, P., &Weiner, K. L. (2007). Use of total parenteral

nutrition in the refeeding of selected patients with

severe anorexia nervosa. International Journal of Eat-

ing Disorders, 40, 285–287.

Mewes, R., Tagay, S., & Senf, W. (2008). Weight curves as

predictors of short-term outcome in anorexia nervosa

inpatients. European Eating Disorders Review, 16, 37–

43.

Neiderman, M., Zarody, M., Tattersall, M., & Lask, B.

(2000). Enteric feeding in severe adolescent anorexia

nervosa: A report of four cases. International Journal of

Eating Disorders, 28, 470–475.

Okamoto, A., Yamashita, T., Nagoshi, Y., Masui, Y.,

Wada, Y., Kashima, A., et al. (2002). A behavior

therapy program combined with liquid nutrition

designed for anorexia nervosa. Psychiatry & Clinical

Neurosciences, 56, 515–520.

Silber, T. J., Robb, A. S., Orrell-Valente, J. K., Ellis, N.,

Valadez-Meltzer, A., & Dadson, M. J. (2004). Noctur-

nal nasogastric refeeding for hospitalized adolescent

boys with anorexia nervosa. Journal of Developmental

& Behavioral Pediatrics, 25, 415–418.

Solanto, M. V., Jacobson, M. S., Heller, L., Golden, N. H.,

& Hertz, S. (1994). Rate of weight gain of inpatients

with anorexia nervosa under two behavioral contracts.

Pediatrics, 93, 989–991.

Steinhausen, H. C., Grigoroiu-Serbanescu, M.,

Boyadjieva, S., Neumarker, K. J., & Winkler Metzke,

C. (2008). Course and predictors of rehospitalization

in adolescent anorexia nervosa in a multisite

study. International Journal of Eating Disorders, 41,

29–36.

Treat, T. A., Gaskill, J. A., McCabe, E. B., Ghinassi, F. A.,

Luczak, A. D., & Marcus, M. D. (2005). Short-term

outcome of psychiatric inpatients with anorexia ner-

vosa in the current care environment. International

Journal of Eating Disorders, 38, 123–133.

Wakefield, A., & Williams, H. (2009). Practice recommen-

dations for the nutritional managment of anorexia

iley & Sons, Ltd and Eating Disorders Association.

S. Hart et al. Weight Changes During Refeeding

nervosa in adults. ACT: Dietitians Association of Aus-

tralia Website; 1–45.

Winston, A. P., Gowers, S., Jackson, A. A., Richardson, K.,

Robinson, P., Shenkin, A., et al. (2005). Guidelines for

the nutritional management of anorexia nervosa (No.

CR130), London: Royal College of Psychiatrists,

London.

Eur. Eat. Disorders Rev. 19 (2011) 390–397 � 2010

Yager, J., Devlin, M. J., Halmi, K. A., Herzog, D. B.,

Mitchell, J. E., Powers, P., et al. (2006). Practice

guideline for the treatment of patients with eating

disorders (3rd edition). American Psychiatric Associ-

ation; 1–128.

Zipfel, S., Lowe, B., Reas, D. L., Deter, H. C., & Herzog,W.

(2000). Long-term prognosis in anorexia nervosa:

John Wiley & Sons, Ltd and Eating Disorders Associati

Lessons from a 21-year follow-up study. Lancet,

355, 721–722.

Zuercher, J. N., Cumella, E. J., Woods, B. K., Eberly, M., &

Carr, J. K. (2003). Efficacy of voluntary nasogastric

tube feeding in female inpatients with anorexia ner-

vosa. Jpen. Journal of Parenteral & Enteral Nutrition,

27, 268–276.

on. 397