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Mental confusion is often the only sign of a urinary tract infection in elderly patients.
QRS Segment
Part of an electrocardiogram (ECG) representing the depolarization of the heart's ventricles, which precedes the contraction of the ventricles.
ECG
An electrocardiogram, a test that measures the electrical activity of the heart to detect heart abnormalities.
Ventricule
A term often misspelled or used interchangeably with ventricle, which typically refers to one of the two lower chambers of the heart or a cavity in the brain that contains cerebrospinal fluid.
PR Interval
A measurement on an ECG that represents the time between the start of the atrial depolarization (P wave) and the start of the QRS complex, indicative of atrioventricular conduction.
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