eMedicine Specialties > Pediatrics: Developmental and Behavioral > Medical Topics
Eating Disorder: Anorexia: Follow-up
Updated: Mar 31, 2008
Follow-up
Further Inpatient Care
- Inpatient management should be approached in such a way as not to seem like punishment to the patient in order to preserve self-esteem and to prevent suicidality and hopelessness.
- The goals of inpatient therapy should be fully discussed with the family and the patient.
- The discussion elements should include development of a healthy meal plan, addressing underlying conflicts (low self-esteem, planning new coping strategies), and enhancing communication skills.
- Randomized controlled trials show that cognitive behavior therapy is very effective, especially in the setting of tube feeding.34
- In a study by McIntosh et al that compared 3 psychotherapies, interpersonal psychotherapy and family therapy were also reported to be effective when the expressed emotion was not negative.35
- Some patients who received nonspecific management appeared to have as good or better an outcome as those who received the other therapies
- Interpersonal psychotherapy was the least effective.
- Cognitive behavior therapy outcomes were not as effective because of the large amount of psychoeducational material, large skills acquisition, and "the inability to generate alternatives to fixed cognition stemming from the cognitive rigidity of anorexia nervosa patients."35
- Nonspecific management may be more successful because the therapy is provided by experienced clinicians, is practiced according to a detailed treatment manual, and institutes psychoeducation with a strong focus on normalizing eating with approaches such as smart food selection and quantities needed to gain weight. The rest of the sessions were based on issues presented by the patient. Key features of this type of therapy may include the nonspecific factor of empathy and therapeutic alliance. Because this is the first time this nonspecific management was studied, a replication of this study may be necessary
- Family involvement is a vital part of the process in the treatment of anorexia nervosa. Family group psychotherapy has been shown to be more cost-effective than family therapy and equally useful (weight gain measurements).36
- Robin et al studied the effect of family relations on behavioral family systems therapy (BFST) versus ego-oriented individual therapy (EOIT) as treatment modalities for adolescents with anorexia nervosa.37 Although the difference was not statistically disparate, the results demonstrated a greater improvement in BMI in the BFST group. In addition, in this group, the mothers showed a decrease in negative communication and an increase in positive communication, whereas the mothers in the other group did not.
- Indications for hospital admission include the following:
- Physiologic decompensation
- Temperature less than 36°C
- Pulse less than 45 beats per minute
- Orthostatic differential greater than 30/min
- Altered mental status, fainting, or other signs of significant malnutrition
- Rapid or excessive weight loss that cannot be curtailed as an outpatient
- Complications of weight control habits
- Inability to break the cycle of disordered eating as outpatient
- Inability to initiate effective outpatient psychotherapy17
- Physiologic decompensation
Further Outpatient Care
- Patients with anorexia nervosa may respond best to family therapy. Psychodynamic psychotherapy in combination with behavioral strategies is indispensable. Remember that anorexia nervosa is associated with suicide.
- For patients with the mild stage of anorexia nervosa, reevaluate in 1-2 months to check that the weight is not decreasing, that health is maintained, and that the patients have not developed bad eating habits. Surveillance is required to ensure that the patient has not progressed to the moderate stage.
Complications
- Most complications are secondary effects from starvation. Complications of anorexia nervosa include the following:
- Orofacial - Dental caries
- Cardiovascular38
- Hypotension
- Prolonged QT
- Arrhythmias
- Cardiomyopathy
- GI
- Delayed gastric emptying
- Decreased intestinal mobility
- Constipation
- Endocrine and metabolic
- Hypokalemia
- Hyponatremia
- Hypoglycemia
- Hypothermia
- Euthyroid sick syndrome
- Hypercortisolism
- Amenorrhea
- Delay in puberty
- Arrested growth
- Osteoporosis
- Renal - Renal calculi
- Reproductive
- Infertility
- Low birth weight infant
- Integumentary
- Dry skin and hair
- Hair loss
- Lanugo body hair
- Neurologic
- Peripheral neuropathy
- Ventricular enlargement
- Hematologic
- Anemia
- Leukopenia
- Thrombocytopenia
- Cardiac complications are the most common cause of death; the mortality rate is about 10%.
- Cardiac effects include profound bradycardia, hypotension, decreased size of cardiac silhouette, and decreased left ventricular mass associated with abnormal systolic function. Patients with anorexia report fatigue and have an attenuated blood pressure response to exercise and reduction in maximal work capacity. An increased incidence of mitral valve prolapse without significant mitral regurgitation is also observed. Low potassium-dependent QT prolongation increases risk of ventricular arrhythmia.39
- Vital signs reflect hypotension with systolic pressures as low as 70 mm Hg and sinus bradycardia with heart rates as low as 30-40 beats per minute. These changes are a response to a decrease in basal metabolic rate. The mechanism may be due to an autonomic imbalance in heart rate regulation with increases in vagal activity and a reduction in sympathetic activity. These changes are physiologic cardiovascular responses, and treatment is unnecessary unless negative clinical sequelae are present. If ECG is performed, evidence of sinus bradycardia, ST-segment elevation, T-wave flattening, low voltage, and rightward QRS axis is apparent. All the aforementioned changes are clinically insignificant. The frequency of rhythm disturbances is most concerning, especially QT interval prolongation that may be an indication for those at risk for cardiac arrhythmias and sudden death.
- Cardiac decompensation is greatest during the initial 2 weeks of refeeding when the myocardium cannot withstand the stress of an increased metabolic demand. If the daily weight gain is 0.2-0.4 kg, then complications are limited.
- Foremost in the gamut of endocrinologic complications is amenorrhea, which is actually part of the diagnostic criteria of anorexia nervosa.
- Amenorrhea results from disorders in the hypothalamic-pituitary-ovarian axis in which levels of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are low despite low levels of estrogen. Reversion to the prepubertal state occurs; the LH response to gonadotropin-releasing hormone (GnRH) is blunted. This blunted response is insufficient to maintain menstrual integrity, and amenorrhea results.
- Weight loss and emotional instability play a role in amenorrhea, although persistence of amenorrhea has been observed in some patients despite a return to baseline weight.
- Amenorrhea persists in 5-44% of patients in whom weight gain has been documented. The explanation for this wide range has not been elucidated.
- Other changes related to endocrine function include a reduction in fertility, multiple small follicles in the ovaries, and decreased uterine volume and atrophy.
- Thyroid function is also affected, with laboratory data revealing a decrease in T3, thyroxine (T4), and an increase in reverse T3. These changes are characteristic of the euthyroid sick syndrome. Similar to the cardiac changes, these represent an adaptive mechanism and hormonal replacement is not necessary.
- An associated impaired release in vasopressin consistent with diabetes insipidus is present. This defect is of the neurogenic type; concentration of urine is observed after administering vasopressin. This affects 40% of those with anorexia nervosa and is reversible with weight gain.
- Osteopenia is a serious complication. Both cortical and trabecular bone are affected, and osteopenia persists despite estrogen therapy. Low levels of progesterone (accelerates remodeling) formation and decreased insulinlike growth factor-1 (IGF-1) levels, which stimulate type 1 collagen biosynthesis, contribute to bone loss. No established treatment is available; however, 1000-1500 mg/d of dietary calcium and 400 IU of vitamin D is recommended to prevent further bone loss and to maximize peak bone mass. Although exercise and hormonal replacement therapy have some benefit in perimenopausal women, exercise may be deleterious in patients with anorexia nervosa who have amenorrhea, and hormonal replacement may induce premature closure of bone epiphysis. Treatment with bisphosphates is not indicated in adolescents.40
- Patients with anorexia nervosa have fewer GI complications than those with bulimia. Constipation is common. In addition, they still have prolonged GI transit, alterations in antral motility, and gastric atrophy. Prokinetic agents may accelerate gastric emptying, and the relief from gastric bloating can accelerate resumption of normal eating habits.
- Cerebral atrophy and loss of brain volume may be observed. Generalized muscle weakness is the most common neurologic symptom.
- Patients with anorexia nervosa typically have dry scaly skin, brittle hair and nails, and increased lanugo-type body hair.
- An increase in BUN levels, which reflects a level of dehydration and decreased glomerular filtration rate (GFR), is present. Electrolyte imbalances are secondary to vomiting, and potassium is most often affected. Other abnormalities include disturbances of calcium, magnesium, and phosphorus.
Prognosis
- As described in Mortality/Morbidity, outcome depends on various prognostic factors, including age at onset, weight loss at presentation, duration of symptoms, duration of inpatient care, and state of family relationships.
- Metacognition plays a role in predicting adverse outcomes or suicide, as does alexithymia.41
- The mortality rate in anorexia nervosa is 10-20%. Overall, 50% of patients recover completely. Another 20% remain emaciated, 25% are thin, and 5-10% remain overweight or die of starvation.10
- Joint family therapy is not as effective as separated family therapy when levels of maternal criticism are raised.23
Patient Education
- For excellent patient education resources, visit eMedicine's Eating Disorders Center and Women's Health Center. Also, see eMedicine's patient education articles Anorexia Nervosa and Amenorrhea.
Miscellaneous
Medicolegal Pitfalls
- Maintain safety is important; therefore, hospitalization should not be shunned because anorexia nervosa is a complex chronic disorder associated with high comorbidity and significant mortality and complications.42 It is difficult to treat due to the shame, denial, and lack of insight concomitant with the disorder.
- Restoring normal eating patterns is crucial because otherwise the restoration of health cannot occur.43
Special Concerns
A history of previous attempts, physical pain, drug use, and laxative use may correlate with a higher likelihood of suicide attempts.14,44,15
The authors and editors of eMedicine gratefully acknowledge the contributions of previous author Jennifer DA Liburd, MD to the development and writing of this article.
More on Eating Disorder: Anorexia |
| Overview: Eating Disorder: Anorexia |
| Differential Diagnoses & Workup: Eating Disorder: Anorexia |
| Treatment & Medication: Eating Disorder: Anorexia |
Follow-up: Eating Disorder: Anorexia |
| References |
| Further Reading |
| « Previous Page |
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Further Reading
The SCOFF questionnaire is a screening tool for eating disorders. One point is awarded for every positive reply. A score greater than 2 indicates likely anorexia nervosa or bulimia. The questionnaire is as follows: 45
- Do you make yourself Sick because you feel uncomfortably full?
- Do you worry you have lost Control over how much you eat?
- Have you lost more than One stone in a 3-month period?
- Do you believe yourself to be Fat when others say you are too thin?
- Would you say that Food dominates your life?
Keywords
anorexia, anorexia nervosa, eating disorders, excessive weight loss, anorexiant, anorexic, anorectic, diminished appetite, aversion to food, psychiatric disorder, fear of weight gain, dieting, amenorrhea, constipation, hypotension, bradycardia, hypothermia, dry skin, hypercarotenemia, lanugo body hair, acrocyanosis, breast atrophy, mitral valve prolapse, hypokalemic hypochloremic metabolic alkalosis, acidosis, leukopenia, thrombocytopenia, dehydration, distorted body image, congestive heart failure, CHF, edema, psychosis
Follow-up: Eating Disorder: Anorexia