ABSTRACT
Fundamentos: A anomalia causada pelo trajeto intramiocárdico tem sido apontada como diagnóstico diferencialda doença arterial coronariana.Objetivo: Analisar a incidência de trajeto intramiocárdico (TIM) em amostra populacional.Métodos: Estudo observacional, retrospectivo, que analisou prontuários de 200 pacientes diagnosticados comtrajeto intramiocárdico (TIM) ou ponte miocárdica (PM) pela angiotomografia coronariana (angio-TC), no períodode setembro de 2010 a março de 2015, no Hospital Beneficência Portuguesa de São Paulo e MedImagem serviçode Radiologia do Hospital. Foram analisadas as seguintes variáveis: sexo, idade, altura, peso, cor da pele, históriafamiliar de doença cardiovascular, tabagismo, presença ou não de stent, incidência de dislipidemia, sintomatologia,presença de hipertensão arterial sistêmica (HAS) e diabetes mellitus (DM), e artérias coronárias mais acometidas.Resultados: Dos 200 prontuários analisados, observou-se maior incidência de TIM nos pacientes do sexo masculino(63,7%, n=128); média de idade 57,78±15,0 anos; predomínio da cor branca (85,0%); média de peso 84,5 kg, commais da metade (n=125, 62,5%) dos pacientes abaixo do peso médio; 15 (7,5%) pacientes portavam stent; 81 (40,5%)apresentavam sintomas (dor torácica ou dispneia); 108 (54,0%) tinham história familiar de doença cardiovascular;73 (36,5%) apresentavam dislipidemia; 83 (41,5%) tinham HAS; 28 (14,0%) tinham DM; 98 (49,0%) pacientesapresentavam aterosclerose; e 56 (28,0%) pacientes eram tabagistas. A principal artéria acometida foi a descendenteanterior (n=193, 96,0%)Conclusões: Conclui-se, na população estudada que o TIM é predominante em pacientes masculinos, de corbranca, não obesos, mais idosos, com história familiar de doença cardiovascular. A principal artéria acometidafoi a descendente anterior.
Background: The anomaly caused by intramyocardial bridge has been identified as a differential diagnosis of coronary artery disease.Objective: To analyze the incidence of intramyocardial bridge (IMB) in a population sample.Methods: Retrospective observational study that analyzed medical records of 200 patients diagnosed with intramyocardial bridge (IMB)or myocardial bridge (MB) using coronary computed tomography angiography (CCTA) from September 2010 to March 2015 at HospitalBeneficência Portuguesa de São Paulo and MedImagem the Radiology service of the Hospital. The following variables were analyzed:sex, age, height, weight, skin color, family history of cardiovascular disease, smoking, presence or absence of stent, incidence of dyslipidemia,symptoms, systemic arterial hypertension (SAH) and diabetes mellitus (DM), and the coronary arteries mostly affected.Results: Of the 200 patient records reviewed, there was a higher incidence of IMB in male patients (63.7%, n=128); mean age 57.78±15.0years; predominance of white color (85.0%); average weight 84.5 kg, with more than half (n=125, 62.5%) of patients below average weight;15 (7.5%) patients were stented; 81 (40.5%) had symptoms (chest pain or dyspnea); 108 (54.0%) had a family history of cardiovasculardisease; 73 (36.5%) presented dyslipidemia; 83 (41.5%) had SAH; 28 (14.0%) had MD; 98 (49.0%) patients had atherosclerosis; and56 (28.0%) patients were smokers. The main affected artery was the left anterior descending artery (n=193, 96.0%).Conclusions: The conclusion is that, in the study population, IMB is prevalent in male patients of white color, non-obese, older,with family history of cardiovascular disease. The main affected artery was the left anterior descending artery.