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 is an excellent form of exercise. But like many activities, swimming in a pool has its downside. Despite attempts to disinfect the pool, some pathogens may still lurk in the water. And research suggests that disinfectants may pose their own health hazards. Swimming in chlorinated pools, particularly indoor pools, might put kids at higher risk for developing respiratory illnesses, including asthma and hay fever.