<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am a 37 year old woman and once in awhile I my heart will be hard. It kind of causes me to catch my breath. Today it just did it and I felt a warm almost tingling sensation go down my left arm and immeadiately my palms got sweaty. Is this cause for concern? I have a heart murmur all my life but an echo cardiogram shows I am fine and I have had normal readings on two EKGs and a chest x-ray that show nothing. Should I be concerned?  <response>: If you are an active healthy woman, who do not smoke, it might be an isolated event and just forget about it. However, two things I will suggest is. 1 treadmill test for making sure your heart is healthy 2do discuss with your doctor about cervical spondylitis as the symptoms you describe commonly occurs in that condition. A MRI cervical spine will be the investigation of choice to rule that out. Regards Chat Doctor. 