A client with a history of unstable angina presents to the emergency department with constant chest pressure that is unrelieved with rest. The client appears anxious, pale, and diaphoretic. After obtaining the client's vital signs, which action should the nurse take next?

Evaluate upper and lower extremities for perfusion, pulse volume, and pitting edema.

Secure client consent for coronary angiography and percutaneous coronary intervention.

Administer four 81 mg aspirin tablets providing instructions to chew before swallowing.

Place an indwelling urinary catheter and institute strict intake and output measurements.