What does the nurse explain that a ventricular septal defect will allow?

Choice A reason: Stabilizing an existing thrombus is not the primary goal of anticoagulant therapy, which focuses on preventing new clot formation. Thrombolytics dissolve clots, while anticoagulants inhibit clotting factors, making this incorrect, as prevention, not stabilization, is the main therapeutic objective.

Choice B reason: Dilating vessels is not an effect of anticoagulants, which inhibit clotting factors to prevent thrombus formation. Vasodilation is achieved by other drugs like nitrates, making this incorrect, as it does not align with the mechanism or goal of anticoagulant therapy.

Choice C reason: The primary goal of anticoagulant therapy is to prevent thrombus formation by inhibiting clotting factors, reducing the risk of thromboembolism in conditions like atrial fibrillation or DVT. This aligns with the therapeutic purpose, making it the correct goal for the nurse to understand.

Choice D reason: Dissolving existing thrombi is the role of thrombolytic therapy, not anticoagulants, which prevent new clots. Anticoagulants like heparin maintain clot stability but do not lyse clots, making this incorrect, as prevention is the primary focus of anticoagulant therapy.

Choice A reason: Laying the infant with the head lower than the body worsens cyanosis in tetralogy of Fallot by reducing systemic venous return. The knee-to-chest position increases resistance, improving oxygenation, making this incorrect, as it indicates a need for further teaching on proper positioning.

Choice B reason: Holding the infant against the shoulder with knees bent up toward the chest is the correct knee-to-chest position for tetralogy of Fallot during cyanosis. This increases systemic vascular resistance, reducing right-to-left shunting and improving oxygenation, indicating the father’s understanding of the instructions.

Choice C reason: Placing the infant upright in an infant seat does not effectively increase systemic vascular resistance to reduce shunting in tetralogy of Fallot. The knee-to-chest position is required, making this incorrect, as it shows a need for teaching on the correct positioning to manage cyanosis.

Choice D reason: Supine position with head elevated does not address cyanosis in tetralogy of Fallot, as it fails to increase systemic resistance to reduce shunting. Knee-to-chest positioning is needed, making this incorrect, as it indicates misunderstanding of the proper technique to improve oxygenation.