<human>: I have been sitting quietly for about an hour and about 30 minutes ago I felt my heart racing. I checked it and for the last 15 minutes its been 112 beats per minute. I have been having these episodes for the last two weeks . I was diagnosed several years ago with mitral valve regurgitation. I am 44 years old and a female. Should I be concerned?
<bot>: Hello! Welcome and thank you for asking on Chat Doctor! Regarding your concern, I would explain that your symptoms could be related to a cardiac arrhythmia. I recommend consulting with your attending physician for a careful physical examination and some tests: -resting ECG and cardiac ultrasound to examine your cardiac function-chest X-ray study-blood lab tests (complete blood count, thyroid hormone levels, fasting glucose, PCR, sedimentation rate, blood electrolytes). An ambulatory 24-48 hours ECG monitoring would be needed to examine your heart rhythm trends during the day. Hope to have been of help! Feel free to ask any other questions whenever you need! Best wishes!