Findings:

Sinus tachycardia
	A normal sinus rhythm at a rate of 95 or greater.
	An accelerated sinus rate that is a physiologic response to a stressor.
	It is characterized by a regular rhythm and heart rate faster than 100 beats per minute
	Underlying physiological stresses such as exercise, fever, hypoxia, hypovolemia, anxiety, pain, hyperthyroidism, can induce sinus tachycardia
Inappropriate Sinus tachycardia
	An accelerated baseline sinus rate (defined as a 24 hour average heart rate > 95) in the absence of a physiological stressor.
	an exaggerated response of the sinus node
	It is characterized by a regular rhythm and heart rate faster than 100 beats per minute
	Hypersensitivity of the sinus node to autonomic input or an abnormality within the sinus node, its autonomic input, or both, often seen in young women without structural heart disease but also in diabetes and autonomic dysfunction. Also in elderly females it is associated with hypertension and psychiatric disorders.