A tropical climate can be observed in Nicaragua. Just as in the other Central American countries, there are two seasons: the dry and the raining season. During the dry season (January - June) there is virtually no rain and trees and plants start to dry out.
Causes of aortic valve regurgitation include: 1  Congenital heart valve disease. 2  You may have been born with an aortic valve that has only two leaflets (bicuspid valve) or fused leaflets rather than the normal three separate leaflets. 3  This puts you at risk of developing aortic valve regurgitation at some time in your life.
Aortic stenosis mainly occurs due to the buildup of calcium deposits that narrow the valve. This is called calcific aortic stenosis. The problem mostly affects older people. Calcification of the valve happens sooner in people who are born with abnormal aortic or bicuspid valves.