If the cuff doesn't fit, try the wrist

A large cuff is the most reliable way to measure blood pressure in obese patients, but failing that, doctors should use the wrist, a review has shown.

The first systematic review of how to measure blood pressure in the obese patient has found that large cuffs that fit properly give results that reliably match those of invasive blood pressure measurement.

But if the patient's arm is too large for even a large cuff, or if a large cuff is not available, then taking the measurement at the wrist is the next best thing, according to the study in BMJ Open