Weight Loss
Aetiology of weight loss
- Appetite maintained:
- DM,
- Hyperthyroidism
- Malabsorption
- Phaeochromocytoma
- Appetite suppressed:
- Malignancy
- Severe cardio or respiratory failure
- Gut failure
- Depression
- HIV
History in weight loss
- History of presenting complaint
o Amount and duration of weight loss
o Any intentional weight loss?
o Dietary changes
o Calorie intake
o ALARMS symptoms (see Dysphagia) and other cancer red flags
o Full systems review
o Systemic symptoms – night sweats
o Psychological history – number of diets, any previous eating disorders, weight fluctuations - Past medical history
o See list of causes - Medications
o Appetite suppressants (including over-the-counter drugs) - Family history
o Cancer
o Eating disorders - Social history
o Smoking
o Travel history
o Risk factors for HIV
Examination of weight loss
- Cachexia
- Lymphadenopathy
- Abdominal masses
- Evidence of cardio or respiratory failure
- Signs of hyperthyroidism
Initial management of weight loss
- Subjective global assessment
- Skin fold thickness
- BMI
- Blood tests:
- FBC, U&E, LFT, TFT, clotting (for vitamin K)
- B12, vitamin D
- Cortisol and SST
- Tumour markers
- Coeliac antibodies
- Treat cause
Further management of weight loss
- If feeding supplementation needed then start with oral route if GIT working
o Give thiamine first (to prevent refeeding syndrome) - Watch for refeeding
- Parenteral nutrition
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Common Weight Loss exam questions for medical students, finals, OSCEs and MRCP PACES