Listen. Dr. James Naismith was a Canadian physical education instructor who invented the game of basketball in 1891 while working at the YMCA Training School in Springfield, Massachusetts.isten. Dr. James Naismith was a Canadian physical education instructor who invented the game of basketball in 1891 while working at the YMCA Training School in Springfield, Massachusetts.
Rarely, it can cause an infection of the lining of the heart, abnormal heart rhythms, or, for severe mitral valve prolapse, congestive heart failure during pregnancy -- but these complications can be safety treated with medication during pregnancy.
What causes heartburn during pregnancy? Heartburn occurs when the valve between the stomach and the esophagus are unable to prevent stomach acid from passing back into the esophagus. During pregnancy, the hormone progesterone causes the valve to relax, which can increase the frequency of heartburn. This allows stomach acid to pass into the esophagus and irritate the lining.