Jaylee was supposed to meet up with a friend today; however, she kept getting distracted by her fluttering, thumping heart. Every time she bent over to grab something or moved too quickly, her heart would begin pounding inside her chest; she just had to stop and listen. Currently, the young woman sat in her bed, shirt and bra discarded on the floor as she pressed the bell of her littman stethoscope into her mitral valve.