Abstract:

OBJECTIVE: To explore the clinical application features of stent implantation and its effect on QT dispersion (QTd) and QTd correction in patients with coronary atherosclerotic heart disease.
METHODS: A computer-based online search of Wanfang and CNKI databases was performed for articles regarding effect of stent on QTd in patients with coronary atherosclerotic heart disease. Repetitive articles or outdate studies were excluded.
RESULTS: A total of 22 articles were included. Common stents include metal bare and drug stents. Metal bare stent implantation is simple with memory effect and good biocompatibility. However, early restenosis incidence is high. Drug stent effectively reduces restenosis incidence, but the long-term safety remains unclear. In addition, the high cost and skiu limit its application. Stent implantation significantly shortens QTd and corrected QTd clinically.
CONCLUSION: Stent implantation significantly shortens QTd and corrected QTd, effectively improves myocardial reperfusion, reduces malignant cardiovascular events incidence, and improves long-term prognosis. However, further researches are still needed to check whether different types of stent implantation induce corresponding changes in QTd.