Eating disorders Flashcards

1
Q

What are the named eating disorders?

A

Anorexia nervosa
Bulimia nervosa
Binge eating disorder
Avoidant restrictive food intake disorder (ARFID)
Other specified feeding or eating disorder (OSFED)
Rumination-regurgitation disorder
Pica

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2
Q

What are the characteristics of anorexia nervosa?

A
  • Significantly lo body weight BMI <18.5
  • Or rapid weight loss 20% in 6 months or failure to gain weight if child
  • Distorted view of themselves/weight
  • Fear of gaining weight (reducing or maintaining low weight, purging behaviours, increasing energy expenditure
  • Excessive preoccupation with weight, body shape and food
  • Desire for thinness is central to self worth
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3
Q

What is the relative mortality of anorexia nervosa?

A

Has one of the highest mortality rates of all mental health conditions
Usually recognised by surrounding people, not the patient
Denial can be a problem

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4
Q

What are the two subtypes of anorexia nervosa?

A

RESTRICTING PATTERN
- Weight loss etc accomplished mainly by restriction alone and increased energy expenditure
BINGE EATING PATTERN
- Low weight and binging or purging or both
- Varies from bulimia nervosa due to lower weight

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5
Q

What is bulimia nervosa?

A

Recurrent binge eating followed by compensatory behaviours to avoid weight gain - once a week or over a month

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6
Q

What is bulimia nervosa characterised by?

A
  • Eating a larger amount of food in a discreet period of time
  • Lack of control during episode
  • Recurrent inappropriate compensatory behaviour to prevent weight gain (vomiting, diuretics, laxatives, enemas etc)
  • Self worth unduly influenced by weight and shape
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7
Q

What is a binge in bulimia nervosa?

A

Large quanitities of food that may normally be avoided e.g. high calorie/cheap food
Sometimes flour, dry pasta, partially defrosted/discarded foods
Used to block out difficult emotions and thoughts
Release tension after a trigger
Followed by guilt, shame and disgust
May eat in secret or alone
Eat until uncomfortably full

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8
Q

What may be a trigger in bulimia nervosa?

A

Emotional or difficult situation
Shame and guilt from previous diet period impacts self esteem and body image concerns

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9
Q

What is a purge in bulimia nervosa?

A

Compensatory behaviour after a binge
Rids calories, avoids weight gain, manages feelings of guilt, anger, shame of binging
- Self-induced vomiting
- Restriction/diuretics to lose weight
- Laxative/enema to prevent absorption
- refusing to take insulin if diabetic
- Excessive energy expenditure

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10
Q

What are the characteristics of binge eating disorder?

A
  • Recurrent binging without compensatory behaviours like in BN (once a week or over a month)
  • Loss of control over eating behaviours, notably more or different than before
  • More in men than any other eating disorder
  • Temporary emotional relief, later shame, guilt and self loathing
  • Often leads to period of restriction ‘tomorrow will be different’
  • May previously had anorexia or bulimia
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11
Q

Weight in binge eating disorder

A

Can result in weight gain, but not directly associated with weight
Do not have to be overweight to have the disorder
Weight bias and discrimination are common

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12
Q

Emotions in binge eating disorder

A

Used as a coping mechanism to manage emotional stress
Often describe as zoning out - unaware of magnitude of food consumed, lack ability to stop eating
Followed by emotional distress - guilt and shame
Affects attention concentration, relationships and isolation

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13
Q

What is the presentation of binge eating disorder?

A

Eating very rapidly
Eating beyond the point of feeling full
Eating when not hungry
Loss of control over eating
Eating alone or in secret

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14
Q

What is OFSED?

A

Abnormal eating behaviours that do not meet full criteria of any other disorder

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15
Q

What are the signs of OFSED?

A

Difficulty eating in front of others
Preoccupation with food
Low confidence and self esteem
Negative body image
Irritability and mood swings
Tiredness and difficulty concentration
Social withdrawal
Feelings of shame, guilt and anxiety
Secretive behaviour around food

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16
Q

What are examples of OFSED?

A

Atypical anorexia: anorexic symptoms, but are in normal weight range
Bulimia nervosa: bulimic symptoms, but cycles are not as frequent
Binge eating disorder: symptoms, but episodes are less frequent
Purging disorder: someone purges but not as part of binge/purge cycles
Night eating syndrome: eating after waking or eating alot after evening meal

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17
Q

What is ARFID?

A

Avoidant restrictive food intake disorder behaviours are not motivated by weight or bodily perceptions or any other medical condition
Avoid certain foods can lead to significant weight loss, lack of nutrients, dependence on nutritional supplements, physical health issues.
Can have concerns about weight etc. but does not necessarily lead to avoiding weight gain

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18
Q

What are the signs of ARFID?

A

-Lack of appetite/interest in food, impaired hunger cues, consume far less than required
- Heightened emotional arousal or distraction leads to reduced food intake
- Sensitivity to sensory characteristics of food
- Concerns about the consequences of eating
- Avoiding social events with food
- Needing to take supplements for nutritional needs
- Delays in development esp with malnutrition
- Can happen in all ages

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19
Q

What is pica?

A

Eating non-food substances
Ingestion of non-food items is persistent or severe enough to require clinical attention.
Symptoms are not a manifestation of another medical condition

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20
Q

What is rumination-regurgitation disorder?

A

Repetitive habitual bringing up of swallowed food that may be partly digested (regurgitation)
May be re-chewed and re-swallowed (rumination) or spat out
Regurgitation is frequent (at least several times a week) and sustained over several weeks
May sense a lack of anxiety from the behaviour
Regurgitation not from a condition that causes it or nausea
Often done in secret and feel shame

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21
Q

What is the cycle of trying to break eating disorder habits and beahviours?

A

Pre-contemplation: denial of a problem, resistance likely.
Contemplation: understands there is a problem. Partly resistant, not doing as they say etc.
Preparation: decided and make plans to change, realise costs of staying this way outweigh benefits
Action: make necessary steps to get help, trying alternative coping mechanisms.
Maintenance: resisting relapse

22
Q

What are characteristics of anorexia in children?

A

BMI under fifth percentile in children and adolescents
Prepubertal onset - pubertal events delayed or arrested

23
Q

What are characteristics of anorexia in men?

A

Loss of sexual interest or potency
Differences in idealised body shape - muscular shape, definition, physical fitness

24
Q

What does bigorexia refer to?

A

Non-medical term
Muscle dysphoria
Preoccupation with the idea that your body is too small or not muscular enough

25
What is drunkorexia?
Non-medical term Restrict food intake to compensate for the calories consumed by drinking
26
What are some differential diagnoses for anorexia nervosa?
Physical health: - Gastrointestinal - Endocrine Mental health disorders: - Depressive disorder - Anxiety disorder - Driven by personality disorder
27
What is diabulimia?
When someone with type 1 diabetes reduces or stops taking their insulin to lose weight
28
What are comorbid mental health disorders with anorexia?
Depression Anxiety OCD Personality disorders
29
What are comorbid mental health disorders with bulimia?
Depression Substance misuse Self harm/suicide attempts Emotionally unstable personality disorder
30
What are biological aetiological factors for eating disorders (AN and BN)?
AN: relatives of patients with AN are 11.3 times more likely to have AN BN: relatives of patients with BN are 4.4-9.6 times more likely to have BN Gender: 10:1 F:M Early puberty Type 1 diabetes
31
What are psychological aetiological factors for eating disorders?
Temperature traits - perfectionism Early experiences/attachment Early feeding behaviours Life events Low self-esteem Weight shape concerns
32
What are social aetiological factors for eating disorders?
Dieting industry Professions - models, gymnasts, acting Upbringing Acculturation Social media
33
What are the physical risks with eating disorders?
Starvation Compensatory behaviours Falsifying weight Related to re-feeding syndrome More chronic problems -osteoporosis Complications from mismanaging diabetes
34
What are the physical implications of starvation?
Cardiac arrythmias Postural hypotension Hypothermia Sepsis Electrolyte imbalance Renal failure Hepatitis Hypoglycaemia Lagopthalmos Muscle wasting Impaired fertility
35
What are the physical implications of vomiting as a compensatory behaviour?
Enamel erosion Swollen parotid glands Gastric and oesophageal trauma Electrolyte imbalance - Hypokalaemia - muscle cramps, tingling, fatigue, palpitations, flattened T wave, U wave - Hypochloraemia - Raised bicarbonate/amylase
36
What are the physical complications of laxatives as a compensatory behaviour?
Increased loss of water and electrolytes Dehydration Electrolyte imbalance Rectal bleeding Abdominal cramps Rebound constipation/pseudo-obstruction - Gradual reduction of laxatives
37
What are the physical implications of exercise as a compensatory behaviour?
Physical exhaustion Muscle damage Elevated CK Rhabdomyolysis Cardiac/ECG abnormalities - Bradycardia, heart block
38
How may patients falsify weight?
Weights in shoes/hair/arm pits Tamper with scales Excessive fluid - Hunger suppression - Anxiety management - Deliberate weight falsification Fluid loading - hyponatraemia - confusion
39
What is refeeding syndrome?
Caused by low micronutrients in your body due to malnutrition When refeeding cells demand electrolytes to metabolise food, so electrolytes move rapidly from blood into the cells, causing low electrolyte levels in the blood = deficiencies
40
What are the featured of refeeding syndrome?
Shifts in fluids/electrolytes Glycaemia leads to increased insulin secretion glycogen/fat/protein synthesis and transport of glucose into cells requires phosphate, magnesium, potassium and thiamine ->rapidly depleted Vitamin deficiency -> affects Wernicke's and Krostakoff's Sodium balance -> oedema, cardiac failure
41
Who may be at more risk from refeeding syndrome? (5)
Very low BMI Complete restriction/rapid weight loss Co-morbid alcohol dependence Co-morbid physical health problems Parenteral feeding>NG feeeding>oral diet
42
What are the risks to self with EDs? (3)
Low mood/hopelessness Suicide = second most common cause of death in anorexia Self harm common in those who binge and purge
43
What are lifestyle impacts of EDs?
Driving - difficulty concentrating, preoccupation with food, mood instability Work Child care Activities - physical School/universities
44
What should be assessed to assess risk? (5)
Weight/height/BMI/rate of weight loss BP ECG Sit up test FBC, U&E, LFT, glucose, Mg, bone
45
What is SUSS?
Sit-Up Squat-Stand test Sit up: patient lies down flat on floor and sits up without using hands Squat-stand: patient squats down and stands without using hands Scoring system - 0:unable 1: able only using hands 2: able with noticeable diffculty 3: able
46
What are the rates of recovery for EDs?
50% fully recover 30% improve 20% remain chronically ill Early intervention model - 60% full recovery
47
What will nutritional managment involve? (5)
Regular eating and snacks Aiming for 0.5-1 kg restoration per week Food prep, cooking, shopping Eating in different situations Psychoeducation
48
What may medical management for EDs involve? (8)
Monitor physical parameters Refeeding syndrome - K+, Mg2+, PO4-, thiamine, vit B - Gradual calories - Don't underfeed Low dose olanzapine Bone density - DEXA scan - osteopenia - calcium supplement NG feeding Bed rest Obs Monitoring bloods
49
What can the psychological management for AN be?
CBT MANTRA SSCM Eating disorder focused focal psychodynamic therapy
50
What can the psychological management for BN be?
Self help session CBT-ED