RESUMEN
OBJECTIVE: To determine whether preoperative aspirin-acetylsalicylic acid (ASA)-timing or dose independently affects 30-day all-cause mortality. BACKGROUND: Preoperative ASA administration is associated with reduced morbidity and mortality after coronary artery bypass graft (CABG). However, data are lacking regarding optimal timing and dosing of ASA. METHODS: We retrospectively reviewed data from 3018 consecutive patients who underwent CABG surgery between July 2005 and May 2011. Patients were assigned to 3 groups according to the time of the last preoperative ASA dose: (1) 24âhours or less preoperatively (nâ=â1173), (2) between 24 and 72âhours (nâ=â876), and (3) more than 72âhours or none (nâ=â969). In a separate analysis, patients were grouped according to ASA dose: 81âmg (nâ=â1285), 325âmg (nâ=â1004), and none (nâ=â543). The primary outcome was 30-day all-cause mortality. RESULTS: The 30-day mortality rate was significantly lower in patients who took ASA 24âhours or less preoperatively (1.5%) than in those who took it between 24 and 72âhours (3.2%) or more than 72âhours or none (2.9%). Multivariate analysis showed that ASA within 24âhours preoperatively was associated with reduced mortality (odds ratio [OR], 0.41; 95% confidence interval [CI], 0.20-0.82; Pâ=â0.01). Moreover, mortality was significantly reduced for patients taking 81âmg of ASA (1.4%) compared with 325âmg (2.9%) or none (3.9%). Multivariate analysis demonstrated that 81âmg of ASA decreased mortality risk by 66% (OR, 0.34; 95% CI, 0.18-0.66; Pâ<â0.01), whereas 325âmg of ASA had no mortality benefit (OR, 0.74; 95% CI, 0.41-1.35; Pâ=â0.33) compared with no ASA. CONCLUSIONS: Low-dose ASA use within 24âhours of CABG is independently associated with decreased early postoperative mortality.
Asunto(s)
Aspirina/administración & dosificación , Puente de Arteria Coronaria/mortalidad , Inhibidores de Agregación Plaquetaria/administración & dosificación , Complicaciones Posoperatorias/prevención & control , Cuidados Preoperatorios/métodos , Adulto , Anciano , Anciano de 80 o más Años , Aspirina/uso terapéutico , Esquema de Medicación , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Inhibidores de Agregación Plaquetaria/uso terapéutico , Complicaciones Posoperatorias/mortalidad , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
Left atrial (LA) dissection is an uncommon entity that occurs most often after mitral valve surgery. We present a case of a 52-year-old man who developed an LA dissection after repair of a postinfarction left ventricular (LV) aneurysm. Transesophageal echocardiography was used to establish the diagnosis of an LA dissection that almost completely occluded the LA, limiting LV filling and causing hemodynamic instability.