Doctor insights on:
Atrioventricular Valve Cusp
Why does the right atrioventricular valve have three cusps while the left atrioventricular valve has only two cusps?
Because: because that's the way we evolved. Or, if you'd prefer, that's what God intended. Either way it comes down to tautology: it is what it is, man. ...Read more
A valve is a structure that regulates the direction of flow. The heart is a special kind of pump. It moves blood by squeezing and relaxing. There are 4 chambers and each chamber has a valve. This keeps blood from moving backwards when the heart squeezes. When a chamber squeezes it lets the blood move forward but when the chamber is relaxed it prevents the blood from ...Read more
Please explain why the right atrioventricular valve has three cusps while the left atrioventricular valve has only two cusps?
Excellent question: And there's no answer for it except to say (as unsatisfying as it may sound), "that's how god made us.". ...Read more
In a normal aortic valve, what stops the valve cusps from opening too much? Or do they just open against the aortic walls?
Correct to a degree:
They are like a parachute and open widely to a maximum length, but not quite to the adjoining wall, of aorta, so there is flow behind to the coronary orifices.
More like a sheet floating in the wind. ...Read more
What are the underlying causes of aortic valve cusp prolapse? Is there always regurgitation with it?
Is the valve regurgitation that is caused by atrioventicular septal defect (mr or tr) seen in doppler echo?
4 cardiac valves. 2 atrioventricular and 2 ventriculoarterial. 2 on the right heart 2 on the left heart. Each ventricle has an atrioventricular and a ventriculoarterial valve.They are one way valves. Flow is venae cavae to right atrium, RA to right ventricle via right av valve or tricuspid, rv to pulmonaryartery via
pulmonic valve-lungs-left atrium-mitral valve-left ventricle-aortic valve- aorta. ...Read more
Broadly speaking,: mechanical valves last longer but require oral anticoagulation with warfarin. tissue valves do not last as long, but do not require oral anticoagulation. the decision is a complex one that is best made with the advice of a physician. ...Read more
May be normal: The aortic valve is comprised of three leaflets, or cusps, that swing open and closed. Approximately 1% of the population is born with only 2 cups. These swing open and shut in a similar fashion. Depending on the precise architecture of the 2 cusps, there may be increased turbulence of blood flow through the valve, and over time more wear and tear leading to thickening/obstruction, or leaks. ...Read moreSee 1 more doctor answer
See details: Chordae tendinae.Get a more detailed answer ›
Not enough info: Without knowing what is wrong with your mitral valve, it is impossible to say. You need to go see a cardiologist and discuss your cardiac echo (ultrasound that looked at your mitral valve). Ask for a list of exactly what you can and cannot do to keep yourself healthy - don't wait. ...Read more
One of 4 heart valve: The mitral valve is one of the 4 heart valves found in the heart. These valves keep blood moving one direction rather than back and forth as the heart contracts. The mitral valve is so named as it looks like the pope's hat (a mitre). The mitral valve separates the left atrium and the left ventricle. ...Read moreSee 1 more doctor answer