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The Effect of Clinical Characteristics and Stent Parameters on Left Ventricular Mechanical Dyssynchrony

https://doi.org/10.20996/1819-6446-2021-06-15

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Abstract

Aim. To study short term effect of stent size and number on left ventricular mechanical dyssynchrony after elective percutaneous coronary intervention (PCI) to left anterior descending (LAD) artery.

Materials and methods. the study included 150 adult patients with LAD lesion treated with PCI using drug-eluting stent. Patients were evaluated pre PCI then 1 month and 3 months post PCI for evaluation of mechanical dyssynchrony using tissue synchronization image (TSI).

Results. Before revascularization mean left ventricular ejection fraction was 51.2±5.7 %, mean time to peak TSI was 213.6±10.9 ms; 1 month after PCI TSI improved significantly to 163.7±17.6 ms (p<0.001), 3 months after PCI showed more improvement to 120.7±26.9 ms (p<0.001). After 3m; 61 patients (40.7%) showed recovery to normal TSI value. The predictors of non-improvement of time to peak TSI after 3 months were diabetes mellitus (p=0.007), dyslipidemia (p=0.001) and stent length (p=0.001), number of stents (p=0.004). There were strong negative correlation between stent length and improvement of the time to peak TSI at 1 month (r=-0.352, p<0.001) and at 3 months (r=-0.509, p<0.001),and also with number of stent at 1 month (r= -0.173, p=0.034) and at 3 months (r=-0.499, p<0.001), but the correlation between stent diameter and improvement of the TSI wasn’t significant neither at 1 month nor at 3 months (r=0.055, p=0.504 and r= -0.018, p=0.827) respectively.

Conclusion. Increased number and length of the implanted stents were predictors to non-improvement of mechanical dyssynchrony, while stent diameter didn’t affects the recovery.

About the Authors

S. Mostafa
Benha University
Egypt

Shaimaa Mostafa



O. Sanad
Benha University
Egypt

Osama Sanad



M. Shawky
Benha University
Egypt

Mahmoud Shawky



M. Magdy
Benha University
Egypt

Mohamed Magdy



E. Elkeshk
Benha University
Egypt

Eman Elkeshk



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For citation:


Mostafa S., Sanad O., Shawky M., Magdy M., Elkeshk E. The Effect of Clinical Characteristics and Stent Parameters on Left Ventricular Mechanical Dyssynchrony. Rational Pharmacotherapy in Cardiology. 2021;17(3):438-443. https://doi.org/10.20996/1819-6446-2021-06-15

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ISSN 1819-6446 (Print)
ISSN 2225-3653 (Online)