Blood Pressure Cuff

The correct measurement of blood pressure requires the use of a  correct cuff (length) size, otherwise the B.P. is not reliable. B.P. cuffs require:

  • That the cuff bladder encircle two-thirds [2/3] or more of the patient's arm;

  • Extend about one-third of the length of the arm; 

  • The center of the cuff should be positioned over the brachial artery. 

An adult standard cuff bladder measures 12 by 22 cm. Large adult or thigh cuffs should be used for larger arms. With the current epidemic of obesity and the difficulty of fitting cuffs on large but short arms, I hope some other reliable method of measurement surfaces soon.

Much care should be given to cuffs that are so small as to be considered "Children" size but are used in adults - the B.P. will definitely be wrong and patients can be erroneously diagnosed as hypertensives and treated for life with medication.