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Objective To explore the efficacy and safety of ticagrelor de-escalation and nicorandil therapy in elderly patients with acute coronary syndrome (ACS) after percutaneous coronary intervention (PCI). Methods A total of 300 elderly patients with ACS were selected from the Sixth and Seventh Medical Center of Chinese PLA General Hospital and Beijing Chaoyang Integrative Medicine Emergency Rescue and First Aid Hospital from November 2016 to June 2019, including 153 males and 147 females, aged>65 years old. All the patients received PCI, and all had double antiplatelet therapy (DAPT) scores ≥2 and a new DAPT (PRECISE-DAPT) score of ≥25. All patients were divided into two groups by random number table method before operation: ticagrelor group(n=146, ticagrelor 180 mg load dose followed by PCI, and ticagrelor 90 mg bid after surgery) and ticagrelor de-escalation + nicorandil group (n=154, ticagrelor 180 mg load dose followed by PCI, ticagrelor 90 mg bid+nicorandil 5 mg tid after surgery, changed to ticagrelor 60 mg bid+ nicorandil 5 mg tid 6 months later). Follow-up was 12 months. The composite end points of cardiovascular death, myocardial infarction and stroke, the composite end points of mild hemorrhage, minor hemorrhage, other major hemorrhage and major fatal/life-threatening hemorrhage as defined by the PLATO study, and the composite end points of cardiovascular death, myocardial infarction, stroke and bleeding within 12 months in the two groups were observed. Results The comparison of general baseline data between the two groups showed no statistically significant difference (P>0.05). There was also no significant difference in the composite end points of cardiovascular death, myocardial infarction and stroke between the two groups (P>0.05). The cumulative incidence of bleeding events in ticagrelor de-escalation + nicorandil group was significantly lower than that in ticagrelor group (P<0.05), while the composite end points of cardiovascular death, myocardial infarction, stroke and bleeding were also significantly lower than those in tecagrelor group (P<0.05). Conclusion In elderly patients with ACS, the treatment of ticagrelor de-escalation + nicorandil after PCI may not increase the incidence of ischemic events such as cardiovascular death, myocardial infarction or stroke, and it may reduce the incidence of hemorrhagic events.
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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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