If the heart sound recording and the ECO recording are superimposed then the first heart sound would occur
  • a at the P wave
  • b just after the P wave
  • c just before the QRS complex
  • d just after the QRS complex

Dear Student,

The correct term is ECG.
The correct option is D.
If the heart sound recording and the ECG recording are superimposed then the first heart sound would occur just after the QRS complex.

Regards,

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