Arrhythmia: (a) + (rhythm) Abnormality in a physiological rhythm, especially in the activity of the brain or heart. Contrary to its apparent etymology, arrhythmia refers...
Atrial fibrillation (AF) (Atria + fibrillation) is the most common cardiac arrhythmia. Chaotic electric activity in the atria of the heart mean that they no...
Photoplethysmography is used in pulse oximeters to measure blood oxygen concentration. A pair of small LEDs face a light collector through a fingertip. One LED...
Ventricle: Any small cavity within a body; a hollow part or organ. The cardiac ventricles constitute the heart’s main pumps. The right ventricle pumps blood...
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