Questions tagged [cardiac-physiology]

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Has a beating heart ever been made using stem cell technology?

Cardiomyocytes (the heart cells that beat) can be generated in a lab. I have seen scientists make beating human heart muscle but not a fully heart. But what about an organoid? A 3D beating heart.
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Why squatting leads to decrease in MVP murmur

Mvp = mitral valve prolapse Hcm = hypertrophic cardiomyopathy Now, I understand that during squatting preload and afterload will increase and both of them would lead to increased LV volume, but how ...
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Why do changes in Effective Refractory Period in Response to Antiarrhytmics occur and how do they help in treating the arrhythmia?

I am having trouble understanding two related concepts. First, why changes in ERP occur when there is the administration of certain antiarrhythmics (eg: Class IC). A neat explanation that I have ...
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What is the functional difference between cardio-pulmonary and the baroreceptors in the regulation of Blood pressure?

Guyton mentions two types of receptor- the baroreceptors and the cardiopulmonary receptors- that are involved in the maintenance of the acute changes in blood pressure. I just wanted to know how these ...