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Cardiac pacing and coronary hemodynamics
Z S Kyriakides1, T M Kolettis, Kremastinos DTh
1Second Department of Cardiology, Onassis Cardiac Surgery Center, Athens, Greece. zskyr@otenet.gr
Progress in Cardiovascular Diseases
|August 13, 1999
Insights
This review examines how artificial heart pacing affects coronary blood flow. It analyzes the impact of pacing rate, atrioventricular delay, and pacing location on heart circulation.
Area of Science:
- Cardiology
- Physiology
- Medical Devices
Background:
- Coronary hemodynamics are crucial for myocardial oxygen supply.
- Artificial pacing is a common intervention for cardiac rhythm disturbances.
- Understanding pacing's impact on coronary circulation is vital for patient management.
Purpose of the Study:
- To synthesize current knowledge on pacing's effects on coronary hemodynamics.
- To explore how specific pacing parameters influence coronary blood flow.
Main Methods:
- Literature review of studies investigating cardiac pacing and coronary circulation.
- Analysis of factors including heart rate, atrioventricular delay, depolarization sequence, and pacing site.
Main Results:
- Pacing significantly alters coronary hemodynamics.
- Heart rate, atrioventricular delay, and pacing site are key determinants of coronary blood flow changes.
- Ventricular pacing sequence also influences coronary responses.
Conclusions:
- Cardiac pacing parameters critically impact coronary hemodynamics.
- Optimizing pacing strategies can mitigate adverse effects on myocardial perfusion.
- Further research is needed to fully elucidate complex interactions.
Abstract:
This article reviews the current knowledge on the effects of pacing on coronary hemodynamics. In particular, the possible effects of heart rate, atrioventricular delay, ventricular depolarization sequence, and ventricular pacing site on the coronary circulation are examined.