MEDICINE MCQ
CARDIOVASCULAR MEDICINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is a change that occurs in the circulation at birth.
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Left atrial pressure decreases and right atrial pressure increases
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Increases pulmonary vascular resistance
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Immediate anatomical obliteration of the ductus arteriosus
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Reversible foramen ovale closure during the first days
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Explanation:
Detailed explanation-1: -Circulatory Changes at Birth At birth, placental blood flow ceases and lung respiration begins. The sudden drop in right atrial pressure pushes the septum primum against the septum secundum, closing the foramen ovale.
Detailed explanation-2: -All babies have this opening (called a foramen ovale) before birth to allow blood to bypass the lungs. Shortly after birth, the tissue usually grows together and closes the hole. But in about 25 percent of people, the hole remains open (patent), resulting in a PFO. Many people have a PFO and never know it.
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