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Anaesthesia for the obese patient

Beware of:

‘Apple’ fat distribution (central obesity)

Metabolic syndrome (3 of central obesity, hyper-tension, cholesterol, sugars, lipids)



Pre-op: STOPBANG >5 = high risk of disordered breathing/OSA

AR: Consider test dose of 50mcg fentanyl pre-induction for sensitivity for opioids

RSI: No evidence

Drug dosing: Ideally use LBW. Practically IBW + few kg. For all drugs except suxamethonium and neostigmine

Position: Reverse trendelenburg with pillow under shoulders for tragus above sternum, rather than break in the bed

Extubation: consider NPA with lidocaine

Post-op: avoid ‘tying’ to the bed e.g. with a-line, infusions