### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Ok so its been continuous for the last 4 days my heart feels like its beating out of my chest i went to the doctor and he took a ecg and blood test because my blood pressure was very high for a 19 year old, thats my age, any way it went away for a day and then i was working today and bang it started again i started to feel dizzy and tired and a lil out of breath, now my job isnt that manual and easy going so yeh but i was just wondering if anyone else has had this problem and whether they know how to calm it etc just seeing if i could get a reason why its happening b4 i go to the doctors tomorrow

### output:

Heart palpitations are the feelings of having rapid, fluttering or pounding heart. Heart palpitations can be triggered by stress, exercise, medication or, rarely, a medical condition. Although heart palpitations can be worrisome, they're usually harmless. In rare cases, heart palpitations can be a symptom of a more serious heart condition, such as an irregular heartbeat (arrhythmia), that may require treatment. Palpitations that are infrequent and last only a few seconds usually don't require evaluation. If you have a history of heart disease and have frequent palpitations or have palpitations that worsen, then you will need a repeat work up with long-term heart-monitoring tests to see if your palpitations are caused by a more serious heart problem. Seek emergency medical attention if heart palpitations are accompanied by: Chest discomfort or pain, Fainting, Severe shortness of breath, Severe dizziness. I would recommend avoiding stress, caffeine, tobacco, alcohol, and stimulants like Red Bull. Some inhaler can cause these symptoms as well.