Chest pain is the most frequent symptom in people who have symptoms with mitral valve prolapse. The chest pain may be very bothersome and frightening, but it does not increase the risk of heart attack, death, or other heart problems. Mitral valve prolapse is the most common cause of mitral regurgitation. That's a condition in which some blood flows backward through the mitral valve with each heartbeat. Over years, moderate or severe mitral regurgitation can cause weakness of the heart muscle, known as congestive heart failure.
1 A trimester system divides the academic year into three terms which can be as short as eight weeks or as long as 16 weeks each. 2  A quarter system divides the academic year into four terms, up to 12 weeks each, and generally counts the summer as one of the terms. second term lasts from early September to late December with a two-week-long break for New Year's at the end of the year. The term is followed by a third term from early January to late March and a brief week-long spring break. The graduation ceremony occurs in March, and the enrollment ceremony in early April.
An academic term (or simply term) is a portion of an academic year, the time during which an educational institution holds classes. The schedules adopted vary widely. 1  A trimester system divides the academic year into three terms which can be as short as eight weeks or as long as 16 weeks each. semester (from the Latin meaning six-monthly) has come to mean either of two academic terms, generally excluding the summer or January terms, if any, and so can be 12 to 20 weeks long. The word semester is sometimes used as a synonym for a term, as in a summer semester.