Stress tests determine how much stress the heart can handle before developing an abnormal rhythm or ischemia. Common stress tests include treadmill tests where the patient exercises until symptoms develop, adenosine tests using a drug to simulate exercise, and stress echocardiograms revealing blood flow issues. Thrombolytic therapy uses intravenous drugs to break up blood clots and prevent damage from heart attacks and ischemic strokes. Doppler ultrasounds use sound waves to evaluate blood flow and detect blockages, assessing arteries and veins in the neck, arms, legs, and during pregnancy. Carotid Doppler ultrasounds specifically image the carotid arteries in the neck, which are important to evaluate for blockages that could cause strokes.

1. BY JULIA HIGGINS Cardiovascular System