Top videos
Normal Heart Sounds With the aid of a stethoscope you can hear the characteristic sounds of the normal heartbeat, typically described as a "lub-dub." These sounds are produced by the closure of the heart valves. The first heart sound or "lub" results from closure of the tricuspid and mitral valves. It is a rather low-pitched and a relatively long sound which, as indicated in, represents the beginning of ventricular systole. The second heart sound, or "dub," marks the beginning of ventricular diastole. It is produced by closure of the aortic and pulmonary (pulmonic) semilunar vanes when the intraventricular pressure begins to fall. This "dub" sound is typically heard as a sharp snap because the semilunar valves tend to close much more rapidly than the AV valves. Because diastole occupies more time than systole, a brief pause occurs after the second heart sound when the heart is beating at a normal rate. Therefore, the pattern that one hears is one of: "lub-dub" pause, "lub-dub" pause, and so on. Sometimes, especially in young normal individuals, a third heart sound can be heard. This sound is produced by the very rapid influx of blood into the partially filled ventricle. It is typically very faint and as such difficult to hear.
Contact us to find out more http://www.londonvisionclinic.com/contact-us/ A video of an actual lasik eye surgery procedure taking place, using VisuMax and MEL 80 at the London Vision Clinic.
Visit http://www.londonvisionclinic.....com/are-you-suitable to find out more about the laser eye surgery process.
Dr. Kathryn Baerman is a Board Certified General Surgeon specializing in Women's Health and Breast Care. She shares with us that in women, hernias present differently than in men. If you are experiencing groin pain, it may be a hernia.
To visit Dr. Baerman in Apex, Chapel Hill, or Durham, North Carolina, call 919-281-1699 to schedule an appointment with her at EmergeOrtho.
Originally broadcast November 21, 2014.
They advertise low, low prices. But does anyone actually pay that rate? Erica Johnson investigates.
More from CBC Marketplace, Canada's top consumer affairs show:
Watch episodes online at http://cbc.ca/marketplace
Like us on Facebook: http://facebook.com/cbcmarketplace
Talk to us on Twitter: http://twitter.com/cbcmarketplace
Follow our hosts @cbctom and @cbcerica
Folic acid, which is also called folate, is a B vitamin. The best food sources of folic acid are fortified cereals. Folic acid plays an important role in the production of red blood cells and helps your baby's neural tube develop into her brain and spinal cord.
Marcus Greatens, M.D., an orthopedic surgeon at Mayo Clinic Health System provides insight into a few of the things patients can expect to experience during knee replacement surgery.
LIKE, SUBSCRIBE & HIT THE 🔔 http://bit.ly/2VW2yV1
Mayo Clinic Health System offers outstanding care close to home. Part of Mayo Clinic, we meet most of your health care needs locally.
#mayoclinichealthcare #mayoclinicexperience #mayoclinichealthsystem #mayoclinic
Follow Mayo Clinic Health System on
Facebook:
http://bit.ly/2VXSYRv
On Instagram at:
http://bit.ly/30obB03
And also on Twitter:
http://bit.ly/2JgsHI5