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Improved systolic function after PTCA can be estimated by femoral arterial Doppler
G Cieslinski1, R Schräder, H Sievert
1Medical Department of Northwest Hospital, Frankfurt/Main, Germany.
Insights
Coronary angioplasty effectively treated stenoses. Noninvasive Doppler analysis of femoral pulses can distinguish patients with ongoing exertional myocardial ischemia from those without significant blockages.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Noninvasive Diagnostics
Background:
- Coronary artery disease remains a leading cause of mortality.
- Assessing the hemodynamic significance of residual coronary stenoses post-angioplasty is crucial for patient outcomes.
- Exertional myocardial ischemia requires accurate diagnostic methods.
Purpose of the Study:
- To evaluate the impact of coronary angioplasty on post-exertional femoral arterial pulse characteristics.
- To determine if noninvasive Doppler analysis can differentiate patients with residual significant coronary stenoses from those successfully revascularized.
- To assess the correlation between Doppler findings and the presence of exertional myocardial ischemia.
Main Methods:
- Prospective trial analyzing 26 patients undergoing 30 coronary angioplasties.
- Comparison of post-exertional Doppler parameters (peak velocity, mean velocity, acceleration) between two groups: residual stenosis <60% (Group A) and >60% (Group B).
- Statistical analysis of pre- and post-exertional Doppler findings within and between groups.
Main Results:
- Coronary angioplasty significantly reduced lumen diameter stenosis from 85.5% to 34.6%.
- Group A (residual stenosis <60%) showed statistically significant improvements in post-exertional peak velocity, mean velocity, and acceleration (dV/dt).
- Group B (residual stenosis >60%) did not exhibit significant improvements in these Doppler parameters.
Conclusions:
- Noninvasive Doppler analysis of the femoral arterial pulse can effectively distinguish patients with residual hemodynamically relevant coronary stenoses.
- This method aids in identifying patients with persistent exertional myocardial ischemia after angioplasty.
- Femoral pulse Doppler offers a simple, noninvasive tool for assessing the functional significance of coronary stenoses post-intervention.
Abstract:
The effect of coronary angioplasty to the post exertional femoral arterial pulse was analyzed in a prospective trial. In 26 patients 30 coronary stenoses could be treated. Narrowed lumen diameter dropped from 85.5% +/-8.2 to 34.6% +/-10.7 (P<0.0001). Patients with a residual coronary artery stenosis of <60% (group A, n=15) were compared to those with incomplete revascularisation (stenoses >60%, group B, n=11). Post exertional Doppler criteria differed between both groups: Peak velocity in group A was 86.08 cm/s +/- 17.8, in group B 72.9 cm/s +/-17, mean velocity 32.06 cm/s +/-12.5 versus 23.6 cm/s +/-10.3 acceleration or dV/dt 813.5 cm/s2 versus 722 cm/s2 +/-164. Statistical significant pre to post postexertional findings improved only in group A (P<0.01, peak velocity, P<0.05 mean velocity and dV/dt). It is concluded that patients with still-existing exertional myocardial ischemia can be distinguished from those without hemodynamic relevant stenoses by means of a simple noninvasive Doppler analysis of femoral arterial pulse.