Apparatus for use with a wearable cuff

A method of operating an apparatus for use with a wearable cuff in measuring blood pressure, wherein the cuff is inflatable to pressurize a measurement site of a subject, the method comprising:

• estimating a size of the cuff during a current inflation of the cuff;
• comparing the estimated size of the cuff to a previous size of the cuff estimated during an inflation of the cuff that immediately preceded the current inflation of the cuff;
• and
• based on the estimated size of the cuff differing from the previous size of the cuff by more than a predefined amount, changing a pressure up to which the cuff is inflated before deflation of the cuff starts.

In an apparatus for use with a wearable cuff in measuring blood pressure, a computer program product comprising a non-transitory computer readable medium, the non-transitory computer readable medium having computer readable code stored therein, the computer readable code being configured such that, when executed by a computer or a processor, the computer readable code causes the computer or processor to:

• estimate a size of the cuff during a current inflation of the cuff;
• compare the estimated size of the cuff to a previous size of the cuff estimated during an inflation of the cuff that immediately preceded the current inflation of the cuff;
• and
• when the estimated size of the cuff differs from the previous size of the cuff by more than a predefined amount, change a pressure up to which the cuff is inflated before deflation of the cuff starts.