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inappropriate sinus tachycardia
Epidemiology:
- women in 2nd-4th decades of life
- more common in healthcare professionals
Clinical manifestations:
- sinus tachycardia at rest
- exagerated increases in heart rate with light activity
- decrease in heart rate during sleep
- palpitations, lightheadedness, dyspnea, fatigue, syncope
Laboratory:
- TSH in serum/plasma
- complete blood count (CBC)
- 24 hour urine catecholamines
Special laboratory:
- echocardiogram: structurally normal heart
- HOLTER
Differential diagnosis:
- hyperthyroidism
- anemia
- pheochromocytoma
- structural heart disease
Management:
- beta-blocker or calcium channel blocker
- ivabradine
General
sinus tachycardia
References
- Medical Knowledge Self Assessment Program (MKSAP) 18,
American College of Physicians, Philadelphia 2018
- Olshansky B, Sullivan RM.
Inappropriate sinus tachycardia.
J Am Coll Cardiol. 2013 Feb 26;61(8):793-801. Review.
PMID: 23265330 Free Article