oa South African Medical Journal - Some observations on the atrial sound

Volume 34, Issue 42
  • ISSN : 0256-9574
  • E-ISSN: 2078-5135



The atrial sound is an audible vibration dependent on atrial contraction, which on a phonocardiogram (PCG) occurs more than 0�07 seconds after the beginning of the P wave of the simultaneous electrocardiogram (ECG) but precedes the onset of the QRS complex.

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