What happens when you dont tighten the valve on a sphygmomanometer or blood pressure machine? -

false hypotension or hypertension (false low or high blood pressure)? Thanks!

false low blood pressure(false hypotension) whenever the cuff doesn t fit or has not been tighten there will be false low BP.. but if the cuff has been tighten so much, the result will be false high blood pressure or false hypertension.

Agreed with the answer of given by kymberly.