【摘要】 目的：探讨破窗理论视阈值下的关键环节护理在急性心肌梗死（AMI）经皮冠状动脉介入术（PCI）患者中的应用效果。方法：选取2022年1月—2024年12月兴宁市人民医院收治的AMI患者80例作为观察对象，随机分为对照组和观察组，各40例。对照组进行常规护理，观察组实施破窗理论视阈值下的关键环节护理。对比两组心理状态、影像学指标、冠心病监护病房（CCU）入住时长及并发症发生情况。结果：护理后，两组汉密尔顿焦虑量表评分下降，且观察组低于对照组（P<0.001）。治疗后，两组左室舒张末期内径减小，左室射血分数升高（P<0.05），且观察组改善幅度大于对照组（P<0.001）。观察组CCU入住时长比对照组短（P<0.001）。与对照组相比，观察组并发症总发生率更低（P=0.013）。结论：破窗理论视阈值下的关键环节护理在AMI PCI患者中的应用效果显著，可改善患者心理状态、心功能，缩短CCU入住时长，降低并发症发生率。更多还原

【Abstract】 Objective: To explore the application effect of key link nursing under the visual threshold of the broken window theory in acute myocardial infarction(AMI) patients undergoing percutaneous coronary intervention(PCI). Methods: A total of 80 AMI patients admitted to Xingning People’s Hospital from January 2022 to December 2024 were selected as the observation objects.They were randomly divided into a control group and an observation group, with 40 cases in each group. The control group received conventional nursing and the observation group received key link nursing under the visual threshold of the broken window theory. The psychological status, imaging indicators, length of stay in coronary care unit(CCU) and complications were compared between the two groups. Results: After nursing, the Hamilton anxiety scale scores in the two groups decreased, and the scores in the observation group were lower than those in the control group(P<0.001). After treatment, the left ventricular enddiastolic diameter decreased and the left ventricular ejection fraction increased in the two groups(P<0.05), and the improvement in the observation group was greater than that in the control group(P<0.001). The length of CCU stay in the observation group was shorter than that in the control group(P<0.001). The total incidence of complications in the observation group was lower than that in the control group(P=0.013). Conclusion: The key link nursing under the visual threshold of the broken window theory has a significant application effect in AMI patients undergoing PCI, and can improve the psychological status and cardiac function of patients, shorten the length of CCU stay, and reduce the incidence of complications.更多还原