Examlex
Selection bias occurs more frequently in systematic samples than in simple random samples.
Heart Disease
A range of conditions affecting the heart, including coronary artery disease, heart rhythm problems (arrhythmias), and many others.
ECG Stress Test
A diagnostic test examining how the heart works under stress, typically involving exercise or medication.
Ventricular Action
The activity or contractions of the ventricles, the two lower chambers of the heart, responsible for pumping blood to the body and lungs.
T Wave
A component of the heart's electrical pattern recorded during an EKG, representing the repolarization of the ventricles.
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