February 2018 Monthly, Weekly and Daily Validated Holidays, Calendar, and Observances.
When to see a doctor. Arrhythmias may cause you to feel premature or extra heartbeats, or you may feel that your heart is racing or beating too slowly. Other signs and symptoms may be related to your heart not pumping effectively due to the fast or slow heartbeat. These include shortness of breath, weakness, dizziness, lightheadedness, fainting or near fainting, and chest pain or discomfort.
1 See how well the heart is working. 2  In an emergency situation, your pulse rate can help find out if the heart is pumping enough blood. 3  Help find the cause of symptoms, such as an irregular or rapid heartbeat (palpitations), dizziness, fainting, chest pain, or shortness of breath.