Formula for converting mmHg to kPa as the unit for measurement of pressure when using newer tourniquet machines that measure pressure using the SI (Systeme International)

Abstract

Tourniquets use is common in hand surgery. The correct tourniquet pressure is important to achieve a bloodless operating field and to prevent tourniquet syndrome and tourniquet paralysis syndrome. Newer tourniquet devices use kPa as the unit to measure pressure. This article highlights the existence of such machines and also describes the formula to convert mmHg to kPa which can be done quite easily to ensure that the correct pressure (in kPa) is used.