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Diagnosis of inappropriate sinus tachycardia requires exclusion of all other causes of sinus tachycardia, differentiation from postural orthostatic tachycardia syndrome, and symptom correlation.
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Inappropriate sinus tachycardia requires diagnosis by exclusion, particularly differentiating from POTS and psychiatric events, and ensuring symptoms coincide with tachycardia before treatment.
Since inappropriate sinus tachycardia (IST) occurs due to various reasons, it can be diagnosed after exclusion of all causes and diseases that may result in sinus tachycardia. In particular, it is important to differentiate postural orthostatic tachycardia syndrome (POTS), and a multidisciplinary approach is necessary for differentiating psychiatric events. In addition, whether the clinical symptoms coincide with tachycardia events should be checked before treatment.
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Junbeom Park (2016) conducted a review in Inappropriate Sinus Tachycardia. Diagnosis of inappropriate sinus tachycardia requires exclusion of all other causes of sinus tachycardia, differentiation from postural orthostatic tachycardia syndrome, and symptom correlation.
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