Dorina's treadmill stress test is close to ending. There is a full set of ECG electrodes on her chest, a BP cuff on her arm and a black rubber breathing mask affixed to her face. She is very tired, and gasping as she breathes thru the big mask. Her pulse is 170 bpm. She wants to end the test but the med team pushes her to complete another few minutes. The doctor checks her BP and listens to her heartbeat with a steth. But as Dorina tries to continue the test her steps become uncoordinated and she starts to falter. The med team reacts quickly and the doctor props her up and prevents her from... Show more