Figure 30-6 Compensatory pause. The ectopic ventricular depolarization wave does not retrogradely spread to the atria. Since the sinus node is not reset, the underlying rhythm is not disturbed.
© Jones & Bartlett Learning.
DescriptionCompensatory vs. Noncompensatory Pauses
PVCs can be associated with either compensatory (Figure 30-6) or noncompensatory pauses (Figure 30-7). If the ectopic ventricular depolarization wave of the PVC spreads retrogradely to the atria and resets the sinus node, the pause will be noncompensatory. If the ectopic ventricular depolarization wave is blocked from retrogradely spreading to the atria, then the pause will be fully compensatory. In general, most of the pauses associated with PVCs will be fully compensatory.
Figure 30-6 Compensatory pause. The ectopic ventricular depolarization wave does not retrogradely spread to the atria. Since the sinus node is not reset, the underlying rhythm is not disturbed.
© Jones & Bartlett Learning.
Description
Figure 30-7 Noncompensatory pause. The ectopic ventricular depolarization wave does spread retrogradely to the atria. The sinus node is reset and the underlying rhythm or rate is changed.
© Jones & Bartlett Learning.
Description