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  2. Dense irregular connective tissue - Wikipedia

    en.wikipedia.org/wiki/Dense_irregular_connective...

    This type of connective tissue is found mostly in the reticular layer (or deep layer) of the dermis. [3] It is also in the sclera and in the deeper skin layers. Due to high portions of collagenous fibers, dense irregular connective tissue provides strength, making the skin resistant to tearing by stretching forces from different directions.

  3. Valve replacement - Wikipedia

    en.wikipedia.org/wiki/Valve_replacement

    Current aortic valve replacement approaches include closed heart surgery, Very invasive cardiac surgery (VICS) and Very invasive, Scapulae-based aortic valve replacement. Catheter replacement of the aortic valve (called trans-aortic valve replacement or implementation [TAVR or TAVI]) is a minimally invasive option for those suffering from ...

  4. Aortic valve replacement - Wikipedia

    en.wikipedia.org/wiki/Aortic_valve_replacement

    Tissue heart valves are usually made from animal tissue (heterografts) mounted on a metal or polymer support. [14] Bovine (cow) tissue is most commonly used, but some are made from porcine (pig) tissue. [15] The tissue is treated to prevent rejection and calcification (where calcium builds up on the replacement valve and stops it working ...

  5. Transcatheter aortic valve replacement - Wikipedia

    en.wikipedia.org/wiki/Transcatheter_aortic_valve...

    Artificial heart valves are susceptible to bacterial infection; most bacteria that cause heart valve infections come from the mouth, so that good dental hygiene and routine dental cleaning are recommended. Antibiotics are prescribed for use before certain dental procedures. [19]

  6. Cardiac skeleton - Wikipedia

    en.wikipedia.org/wiki/Cardiac_skeleton

    The heart's cardiac skeleton comprises four dense connective tissue rings that encircle the mitral and tricuspid atrioventricular (AV) canals and extend to the origins of the pulmonary trunk and aorta. This provides crucial support and structure to the heart while also serving to electrically isolate the atria from the ventricles. [1]

  7. Soulmate surgery: Couple married 70 years undergoes ... - AOL

    www.aol.com/news/2014-08-14-soulmate-surgery...

    Then, a new heart valve replacement surgery became available and doctors at the Cleveland Clinic placed the couple at the top of the list. "Ten years ago, if they came with this medical problem ...

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