Pertaining to ischaemic heart disease (IHD), which of the following statements is/are correct?W. Ventricular fibrillation is more life-threatening than atrial fibrillation.X. Hypertension is a risk factor for development of IHD.Y. An imbalance between oxygen supply and demand underpins all IHD.Z. IHD is always caused by blockage within a coronary artery and subsequent ischaemia.Question 9Select one:a.Only W, X, and Y are correct.b.Only W and Y are correct.c.Only X and Z are correct.d.Only Z is correct.e.All are correct.
Question
Pertaining to ischaemic heart disease (IHD), which of the following statements is/are correct?W. Ventricular fibrillation is more life-threatening than atrial fibrillation.X. Hypertension is a risk factor for development of IHD.Y. An imbalance between oxygen supply and demand underpins all IHD.Z. IHD is always caused by blockage within a coronary artery and subsequent ischaemia.Question 9Select one:a.Only W, X, and Y are correct.b.Only W and Y are correct.c.Only X and Z are correct.d.Only Z is correct.e.All are correct.
Solution
The correct answer is a. Only W, X, and Y are correct.
Explanation:
W. Ventricular fibrillation is more life-threatening than atrial fibrillation. This is correct. Ventricular fibrillation is a serious cardiac rhythm disturbance that results in a rapid, inadequate heartbeat. It is more life-threatening than atrial fibrillation, which is an irregular and often rapid heart rate that can increase your risk of strokes, heart failure and other heart-related complications.
X. Hypertension is a risk factor for development of IHD. This is correct. Hypertension, or high blood pressure, can damage your arteries by making them less elastic, which decreases the flow of blood and oxygen to your heart and leads to heart disease.
Y. An imbalance between oxygen supply and demand underpins all IHD. This is correct. Ischemic heart disease occurs when the heart muscle doesn't get enough oxygen due to critical coronary artery disease. The heart muscle needs more oxygen during physical activity, so symptoms often occur during exercise.
Z. IHD is always caused by blockage within a coronary artery and subsequent ischaemia. This is incorrect. While this is a common cause of IHD, it's not the only one. Other factors, such as damage to the heart muscle or valves or a congenital heart defect, can also cause IHD.
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