Final answer:
Tachycardia is a condition in which the heartbeat is faster than normal and is often associated with symptoms such as dizziness, shortness of breath, rapid pulse, and chest pain.
Step-by-step explanation:
Tachycardia is a condition in which the heartbeat is faster than normal. It is not normal in a resting patient, but may be detected in pregnant individuals or those experiencing extreme stress. Tachycardia can be triggered by stimulation from the limbic system or disorders of the autonomic nervous system. Symptoms may include dizziness, shortness of breath, rapid pulse, heart palpitations, chest pain, or fainting.