Partial anomalous pulmonary venous return is associated with which type of ASD?

Study for the CCI Echocardiography Test. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Partial anomalous pulmonary venous return (PAPVR) is a congenital heart defect where one or more pulmonary veins drain into the right atrium or other structures instead of the left atrium, which can lead to significant hemodynamic consequences. This condition is commonly associated with a sinus venosus atrial septal defect (ASD).

Sinus venosus ASD typically occurs near the entrance of the superior vena cava, where the anomalous pulmonary veins can also be located. This anatomical relationship results in the combination of both defects, impacting blood flow dynamics and increasing the risk of complications like right heart volume overload and pulmonary hypertension.

In contrast, primum ASDs, secundum ASDs, and coronary sinus ASDs are associated with different types of anatomical defects and do not typically involve the situation where pulmonary veins connect anomalously to the right atrium or superior vena cava. Each defect has its unique implications for pulmonary return and hemodynamics, making the sinus venosus defect the correct association with PAPVR.

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