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New formula to help staff reckon weight of patients

Researchers have proposed a new formula to provide an up-to-date weight estimation in adults and children

Researchers have proposed a simple formula for calculating the weight of adults and adolescents in the emergency department (ED).

In pre-hospital settings and in resuscitation in hospital, it is impossible to weigh patients directly, unless trolleys have built-in scales.

No set standard

Yet there are no standard adult weight-estimation tools, even though the doses of many drugs and fluids administered in the ED depend on weight.

Children’s weight is often estimated using age or height and recently mid-arm circumference (MAC) measurements have been used too.

The authors say: ‘In adult medicine it is common practice – although unlikely to be good practice – for many drugs to be given as a single adult dose, whether the patient weighs 50kg or 100kg.

‘However, many drugs used in

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