Atrial fibrillation and a corresponding enlargement of the left atrium may cause an increase in size of the mitral valve annulus. With a sinus rhythm, the mitral annulus undergoes dynamic changes during the cardiac cycle. For example, at the end of diastole the annular area is smaller than at the end of systole.
To determine who can perform aquatic therapy, we must define what aquatic therapy is. First, notice that aquatic therapy is considered a therapeutic procedure, not a modality. There are many technical and practical distinctions between the practice of aquatic therapy and the application of therapeutic modalities.
Swimming pools can give you cancer, because disinfectants in the water react with sunscreen, sweat, and skin to form a toxic cocktail of chemicals, a study has suggested. Chemicals in pools can combine to create a health risk Photo: ALAMY. 4:45PM BST 22 Jul 2010.