Test 6: Eating and Sleep-Wake Disorders Flashcards
What are the characteristics of Bulimia Nervosa?
1) Binge eating
- Excess amounts in discrete time period
- Perceived as uncontrollable
- Associated with guilt, shame, or regret (may be)
- Hide from family members (may)
- High in sugar, fat, or carbs (often)
2) Compensatory behaviors:
- purging (most common)
– most common: self-induced vomiting
– other: diuretics or laxatives
- Excessive exercise
- Fasting or food restriction
What are the associated physical features of Bulimia Nervosa?
- Most within 10% normal body weight, have more body fat
- Purging can result in severe medical problems
– death
– electrolyte imbalance
– kidney failure, cardiac arrhythmia, seizures, intestinal problems, permanent colon damage
– erosion of dental enamel
What are the associated psychological features of Bulimia Nervosa?
- Overly concerned with body shape (most)
- Fear of gaining weight, but most have normal body weight
- Comorbid psychological disorders (80% anxiety)
What are medical consequences of Bulimia Nervosa?
- Salivary gland enlargement causes by repeated vomiting (cubby face)
- Erosion of dental enamel
- Electrolyte imbalance –> cardiac arrhythmia and renal failure
- Intestinal problems from laxative abuse
- Calluses on fingers and hands from stimulating gag reflex
What are the defining characteristics of anorexia nervosa?
Extreme weight loss
- calorie restriction below energy requirements
- binging and purging (may)
- 15% below expected weight
- intense fear of weight gain and losing control over-eating
- relentless pursuit of thinness
- often begins with dieting
What are the associated features of anorexia nervosa?
- Marked disturbance in body image (most)
- Comorbid with other psychological disorders (most)
- Organ damage: cardiac damage (heart attack and death)
What are the defining features of binge eating disorder?
(New to DSM)
- No compensatory behaviors
- Associated with distress and/or functional impairment
What are the associated features of BED?
- Obesity (many)
- Concerns about shape and weight (some)
- Older than bulimics and anorexics
- More psychopathology than non-binging obese people
What are the facts and statistics of Bulimia Nervosa?
- Majority are female: 90%+
- Onset: typically adolescence
- Median age: 18-21
- Lifetime prevalence: 1.1% females, 0.1% males
- College women: 6-7%
- Tends to be chronic if left untreated
What are the facts and statistics of Anorexia Nervosa?
- Majority: female & white, middle-to upper-middle-class families
– High expectations,
– perfectionistic
– Non-communcative
– Concerned with outward appearance - Usually develops around early adolescence
- More chronic and resistant than bulimia
What are the causes of Bulimia and Anorexia?
1) Culture
- media portrayals: thinness linked to success and happiness
- Cultural emphasis on dieting
- Standards of ideal body size: change like fashion, difficult or impossible to achieve
2) Biological
- partial genetic component
- deficits in serotonin (binging)
3) Psychological and behavioral
- low sense of personal control and self-confidence
- perfectionistic attitudes
- distorted body image
- preoccupation with food
- comorbidity: anxiety and mood disorders
(Interacting: dietary restraint, family influences, biological & psychological dimensions)
What is the psychosocial treatments of bulimia nervosa?
CBT
- treatment of choice
- identifying maladaptive thinking patterns and behavioral habits, then gradual practice of new habits
- learn to eat small, frequent meals,
What is the medical treatment of Bulimia Nervosa?
Antidepressants
- Have some effectiveness
- Can help reduce binging and purging behavior
- Usually not efficacious in the long-term
What is the psychological treatment of binge eating disorder?
- CBT: similar to that used for bulimia, appears efficacious
- Interpersonal: equally effective as CBT
- Self-help techniques: also appear effective
What goals of psychological treatment of Anorexia Nervosa?
- Weight restoration: first and easiest goal to achieve
- Psychoeducation
- Rx: have not been found to be effective
- Behavioral and cognitive interventions: targets food, weight, body image, thought, and emotion
- Treatment often involves the family
- Long-term prognosis for anorexia is poorer than for bulimia
What is the background and overview of obesity?
- BMI of 30+
- Not DSM disorder but may be a consequence
- 2008: 33.8% US adults
- 2010: 37.5% US adults
- Mortality rates: closely associated with smoking
- Increasing more rapidly in children/teens and developing countries
What is night eating syndrome?
- Occurs in 7-19% obesity treatment seekers
- Occurs in 55% bariatric surgery seekers
- Features:
– consume 1/3+ daily caloric intake
– get up during the night to eat
– patients are wide awake, not binge eating, eat high caloric foods
– often skip breakfast next morning