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.
Causes. Tricuspid valve regurgitation can have several causes. Tricuspid valve regurgitation is usually caused by the lower right heart chamber (right ventricle) bulging (dilating), which can lead to the tricuspid valve not working properly.ou may be diagnosed with this condition when having tests for other conditions. Signs and symptoms of tricuspid valve regurgitation may include: 1  Fatigue. 2  Declining exercise capacity. 3  Swelling in your abdomen, legs or veins in your neck. 4  Abnormal heart rhythms. 5  Pulsing in your neck.