Título Em Cirurgia Cardiovascular SBCCV Practice Questions - Título De Especialista Em Cirurgia Cardiovascular (SBCCV AMB) Exam

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During cardiac surgery involving opening of the right atrium, identification of the Triangle of Koch (Triângulo de Koch) is critical to avoid iatrogenic injury to the atrioventricular (AV) conduction system. What are the three anatomical boundaries that define the Triangle of Koch?

The tendon of Todaro, the septal leaflet attachment of the tricuspid valve, and the orifice of the coronary sinus. The crista terminalis, the Eustachian valve, and the fossa ovalis limbus. The membranous septum, the anterior leaflet of the mitral valve, and the non-coronary aortic sinus. The medial papillary muscle (Lancisi), the moderator band, and the supraventricular crest.

Correct Answer:

The tendon of Todaro, the septal leaflet attachment of the tricuspid valve, and the orifice of the coronary sinus.

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