The study of the physiology and pathology of the cardiovascular system
16
votes
3answers
210 views
How is the blood volume of a living organism measured without killing it?
How is the blood-volume of an organism measured without killing it? NOTE: The blood-volume of an organism is defined as the total volume of blood present inside that organism.
8
votes
2answers
360 views
How does sodium in one's diet affect blood pressure?
Due to high blood pressure, my doctor has recommended I go on a low-sodium diet. So, that got me wondering what it is about sodium that drives this recommendation?
What does sodium do to a body ...
3
votes
2answers
31 views
Can stress echocardiography show coronary blood flow difference before and after exercise?
Stress echocardiography means a pair of cardiac ultrasound imaging examinations, before and after exercise. I assume that coronary blood flow is increased after exercise. Is cardiac ultrasound ...
2
votes
1answer
54 views
Why is elevated homocysteine considered a risk factor for angina?
Elevated homocysteine levels are listed among risk factors for angina. How is homocysteine related to the heart? Or the coronary arteries? How do these relationships make it a risk factor for angina?
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1
vote
1answer
26 views
What's seen when stress echocardiography shows ischaemia? Can this happen without angina?
What can be seen on the screen when stress echocardiography (a pair of heart ultrasounds before and after exercise) suggests ischaemia? Can this happen without chest pain?
Illustration from ...
