Which of the following is NOT listed as a mid-systolic murmur type?

Which of the following is NOT listed as a mid-systolic murmur type?

• A. Innocent
• B. Physiologic
• C. Aortic Stenosis
• D. Mitral stenosis

Answer: (D)

Murmur timing relative to the cardiac cycle is what separates mid-systolic murmurs from others. Mid-systolic murmurs occur during the middle portion of systole and are commonly heard as benign flow or ejection murmurs, such as innocent or physiologic types, and they can include true systolic ejection murmurs like those from aortic stenosis. In contrast, mitral stenosis is a diastolic murmur, arising after the aortic valve has closed during ventricular filling. Because it occurs in diastole, it is not a mid-systolic murmur. That’s why mitral stenosis is the correct choice.

Murmur timing relative to the cardiac cycle is what separates mid-systolic murmurs from others. Mid-systolic murmurs occur during the middle portion of systole and are commonly heard as benign flow or ejection murmurs, such as innocent or physiologic types, and they can include true systolic ejection murmurs like those from aortic stenosis. In contrast, mitral stenosis is a diastolic murmur, arising after the aortic valve has closed during ventricular filling. Because it occurs in diastole, it is not a mid-systolic murmur. That’s why mitral stenosis is the correct choice.