Artificial heart valve thinners which must be tested and monitored constantly or it may be the constant ticking noise of the valve, which can be heard sometimes several feet away from the patient forever 24-7. There are three main types of artificial heart valves: the "mechanical,"the "biological," and the "tissue engineered" valves. Mechanical heart valves (MHV) are prosthetics designed to replicate the function of the natural valves of the human heart. The human heart contains four valves: tricuspid valve, pulmonic valve, mitral valve and aortic valve. Their main purpose is to maintain unimpeded forward flow through the heart and from the heart into
Where Would You Be rawness" of it. The music video was directed by Morris Abraham and premiered in May 2002. "Where Would You Be" debuted at number 45 on the U.S. "Billboard" Hot Country Songs for the week of May 11, 2002. Where Would You Be "Where Would You Be" is a song written by Rachel Proctor and Rick Ferrell, and recorded by American country music singer Martina McBride. It was released in May 2002 as the third single from her "Greatest Hits" album. The song peaked at number 3 on the U.S. "Billboard" Hot Country Singles & Tracks chart. The female narrator questions