A medical assistant approaches a patient with a blood pressure cuff and a stethoscope. The patient rolls up their sleeve and positions their arm. Which of the following types of consent has the patient given?

Expressed consent is a clear, explicit agreement given by a patient, usually in verbal or written form. Since the patient did not verbally agree or sign any consent form, this type of consent is not applicable in this situation. The actions alone do not constitute explicit expression of consent.

Verbal consent requires a patient to verbally agree to a procedure or treatment. Although the patient is cooperating by rolling up their sleeve, there is no explicit verbal agreement in this instance. Therefore, this choice is not correct as the consent is not communicated through spoken words.

Informed consent involves providing the patient with comprehensive information about a procedure, its risks, and benefits, allowing them to make a knowledgeable decision. While the patient is willing to proceed with the blood pressure measurement, they have not received detailed information regarding the procedure, making this option incorrect.