Examlex
Mr. Thompson is a cardiology patient who says he has had episodes of his heart "racing" unexpectedly, even when he is sitting down and even a few times while he was sleeping. The cardiologist has performed a stress test and found no abnormalities. Which of the following tests would you expect the cardiologist to order next?
K+ Channels
Potassium channels that allow the selective passage of potassium ions across cell membranes, important for various physiological processes.
Plateau Phase
A stage in some processes where a level of activity or condition remains consistently steady before an eventual change or decline.
Cardiac Cycle
The sequence of events that occur in a complete heartbeat, including contraction and relaxation of the atria and ventricles.
Right Atrium
The right upper chamber of the heart that receives deoxygenated blood from the body and pumps it to the right ventricle.
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