When a patient rolls up his sleeve for blood pressure, what type of consent is given?

When a patient rolls up his sleeve for a blood pressure measurement, the situation demonstrates expressed consent. This type of consent occurs when a patient clearly indicates their willingness to undergo a specific procedure, either verbally or through gestures. In this case, by voluntarily rolling up the sleeve, the patient is actively participating and signaling their consent for the healthcare provider to measure their blood pressure.

Expressed consent is crucial in clinical settings because it reassures healthcare professionals that the patient understands what is about to occur and agrees to it, even if it's a routine procedure. Unlike implied consent, where the agreement is inferred from actions or circumstances without overt communication, or informed consent, which typically involves a detailed explanation of the procedure and any associated risks, expressed consent is straightforward and confirms the patient's active participation in their care.