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Electrocardiogram

A non-invasive test that records the electrical activity of the heart to evaluate heart rate, rhythm, and conduction abnormalities.

Key Facts

  • It measures electrical impulses as they travel through the heart's specialized conduction system from the atria to the ventricles.
  • Normal recordings display distinct P, QRS, and T waves representing atrial stimulation, ventricular stimulation, and ventricular recovery.
  • It is essential for confirming atrial fibrillation and differentiating it from other cardiac arrhythmias that may sound similar on auscultation.
  • The test can be performed during routine examinations or when clinical signs like weakness, exercise intolerance, or irregular pulses are noted.

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