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PP interval Mention its duration, characteristics and representation in the electric cycle

PP interval Mention its duration, characteristics and representation in the electric cycle
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Answer #1

Pp intervak is the interval between two P waves during atrial depolarisation.

it is measured from onset of one P wave to onset of other p wave

characterisics:

  • PP and RR interval are same in sinus rhythm
  • But these differ in arrythmias
  • It varies widely from 1.04 sec to 0.60 sec depending on heart rate
  • PP interval gradually lengthens and shortens in cyclical manner in accordance to phases of respiratory cycle
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