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the relationship between cardiac output and heart rate, end-diaslolic volume and stroke volume for healthy elderly men and healthy younger men Based on the results of these studies, which of the following age-related anatomic changes contributes to well-maintained cardiac output in the elderly men?

A) Dilated ascending aorta
B) Increased coronary collateral circulation
C) Increased number of myocytes
D) Left ventricular dilation
E) Left ventricular hypertrophy
 

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I don't get this qn, there are something missing. In the qn they were talking about a study result. But I don't see any given info in the stem...!!!!:rolleyes:
 

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Think its E,
A is close but that will lead to regurg and decrease CO.
Any more opinions
 

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cant unrstnd the question man

the relationship between cardiac output and heart rate, end-diaslolic volume and stroke volume for healthy elderly men and healthy younger men Based on the results of these studies, which of the following age-related anatomic changes contributes to well-maintained cardiac output in the elderly men?

A) Dilated ascending aorta
B) Increased coronary collateral circulation
C) Increased number of myocytes
D) Left ventricular dilation
E) Left ventricular hypertrophy
m not really able 2 undrstnd the question , frame it right plz
 
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