Key result
Prolonged ventricular pacing induced persistent changes in repolarization and diastolic function, including peak left ventricular filling rate (P=0.02) and isovolumic relaxation time (P=0.03).
Why the study?
Does ventricular pacing alter postpacing diastolic function and repolarization in subjects with permanent pacemakers?
Observational (n=8)
Does ventricular pacing alter postpacing diastolic function and repolarization in subjects with permanent pacemakers?
p-value: p=0.02 for dD/dt/D; 0.03 for IVRT
Long-term ventricular pacing induces persistent changes in both repolarization and diastolic function, supporting the concept of electrical and mechanical cardiac memory.
No takes yet. Share an insight, caveat, or question.
May warrant caution with prolonged ventricular pacing in pacemaker patients; extends cardiac memory concept to diastolic function but remains hypothesis-generating.
Alessandrini et al. (1997) conducted an observational in Permanent pacemakers (n=8). Ventricular pacing vs. Atrial pacing was evaluated on Peak left ventricular filling rate (dD/dt/D) and isovolumic relaxation time (IVRT) (p=0.02 for dD/dt/D; 0.03 for IVRT). Prolonged ventricular pacing induced persistent changes in repolarization and diastolic function, including peak left ventricular filling rate (P=0.02) and isovolumic relaxation time (P=0.03).
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