RESUMEN
Sirolimus-eluting stents (SESs) are superior to bare metal stents (BMSs) for percutaneous coronary intervention, but data regarding SESs in ST-segment elevation myocardial infarction (STEMI) are limited. We investigated the clinical outcomes of patients with STEMI who were treated with SESs. We measured clinical characteristics and acute and long-term outcomes in 306 consecutive patients with STEMI who received a SES (n = 156) or a BMS (n = 150). Patients were followed for death, nonfatal reinfarction, and target vessel revascularization. Patients with SESs had a 0.6% in-hospital mortality rate versus 5.3% in patients with BMSs (p = 0.015). Six-month mortality rates were 1.9% (SES) and 10.1% (BMS, p = 0.003). At 6 months, patients with SESs were less likely to have target vessel revascularization (1.3% vs 8.1%, p = 0.005) and achieve the composite end point (3.2% vs 16.1%, p = 0.0001). No subacute thrombosis or clinical restenosis occurred in the SES group. Patients who received BMSs were older, received more stents, and had more myocardial damage, worse renal function, and lower ejection fractions than did those in the SES group. By multivariate discriminant analysis, stent type (SES vs BMS) was the most significant determinant of the 6-month composite end point (p = 0.01) and the need for target vessel revascularization (p = 0.02). In conclusion, SESs are safe and effective in STEMI at 6 months.
Asunto(s)
Sistemas de Liberación de Medicamentos , Inmunosupresores/administración & dosificación , Infarto del Miocardio/terapia , Sirolimus/administración & dosificación , Stents , Factores de Edad , Anciano , Angioplastia Coronaria con Balón , Trombosis Coronaria/epidemiología , Análisis Discriminante , Electrocardiografía , Femenino , Mortalidad Hospitalaria , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Infarto del Miocardio/mortalidad , Revascularización Miocárdica , Evaluación de Resultado en la Atención de Salud , Diseño de Prótesis , RecurrenciaRESUMEN
BACKGROUND: Direct percutaneous coronary intervention (PCI) is the preferred method of reperfusion for ST-elevation myocardial infarction (STEMI). Transfer from community hospitals to PCI centers increases availability for direct PCI, which improves outcomes compared to fibrinolysis in Europe. It has been difficult to achieve similar door-to-balloon times for transfer patients in the United States. METHODS: We designed a standardized protocol and integrated system of transfer for patients with STEMI. We report the door-to-balloon times for the pre- and postpilot patients in the index hospital and describe the details of the current Level 1 MI Program. RESULTS: In the 15 months before the pilot project, the door-to-balloon time for patients receiving ad hoc transfer for direct PCI was 192 minutes, similar to the national average. The door-to-balloon time for the patients receiving rescue PCI after failed thrombolysis was 221 minutes. The standardized protocol decreased door-to-balloon time to 98 minutes in the pilot trial (P < .01) and has now been applied successfully in 29 community hospitals. CONCLUSIONS: Rapid transfer of patients with STEMI is feasible in the United States using a standardized protocol and integrated transfer system. This requires a team approach with cooperation between cardiologists, emergency physicians, nurses, and the emergency medical system as well as various health care organizations.