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Objective To investigate the association between the serum creatinine/cystatin C ratio (SCr/Cys C) as a Sarcopenia index (SI) and the incidence of in-hospital adverse events in patients with acute myocardial infarction (AMI) undergoing emergency percutaneous coronary intervention (PCI). Additionally, we evaluate the predictive efficacy of the SI in predicting major adverse cardiovascular events (MACEs) during hospitalization. Methods A total of 306 patients with AMI who underwent emergency PCI in the 904th Hospital of PLA Joint Logistics Support Force from January 2020 to March 2023 were consecutively included in this retrospective analysis. Patients were divided into two groups based on the occurrence of MACEs during hospitalization: MACEs group (n=43) and non-MACEs group (n=263). Clinical characteristics and pre-PCI laboratory test results were collected. Univariate and multivariate logistic regression analyses were performed to identify independent risk factors for MACEs. The predictive performance of SI was assessed using receiver operating characteristic (ROC) curve analysis. Results The incidence of in-hospital MACEs in AMI patients was 14.1%.The results of the independent samples t-test showed that the SI level in MACEs group was significantly lower than that in non-MACEs group, with a statistically significant difference (P<0.001). The results of the multivariate logistic regression analysis suggested that new-onset atrial fibrillation, Killip class 2-4, SI, and TG were independent risk factors for in-hospital adverse events after emergency PCI. The ROC curve results showed that the predictive value of SI (AUC=0.741, 95%CI 0.666-0.816) using the SCr/Cys C ratio was superior to that of single Cys C (AUC=0.658, 95%CI 0.570-0.746) for predicting post-PCI MACEs, with a statistically significant difference (P<0.05), and the optimal cutoff value for SI was 78.14. After stratifying SI based on the cutoff value, the results of the independent samples t-test showed that compared to the higher SI group, the lower SI group had a higher occurrence of specific adverse events such as heart failure (P<0.001), malignant arrhythmias (P=0.009), and strokes (P=0.003), with statistically significant differences. Conclusions The results highlight SI as an independent risk factor for MACEs during hospitalization after emergency PCI in AMI patients. Furthermore, SI has proven to be an effective prognostic index for patient outcomes.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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