Why the study?
What is the prevalence, characteristics, and natural course of inappropriate sinus tachycardia in middle-aged subjects?
What is the prevalence, characteristics, and natural course of inappropriate sinus tachycardia in middle-aged subjects?
Inappropriate sinus tachycardia has a prevalence of approximately 1.16% in middle-aged individuals and follows a benign chronic course without progression to structural heart disease.
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May reassure on benign IST course in middle-aged adults; leaves open need for larger prospective studies on natural history.
Still et al. (2005) studied this question.
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