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Cool-down Phenomenon in Differentiating Supraventricular Tachycardias
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  • Khalid Sawalha,
  • Vikram Gondhalekar,
  • Nathan Klammer,
  • Fuad Habash,
  • Srikanth Vallurupalli,
  • Hakan Paydak
Khalid Sawalha
White River Health System Inc

Corresponding Author:ksawalha@aol.com

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Vikram Gondhalekar
University of Arkansas for Medical Sciences
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Nathan Klammer
University of Arkansas for Medical Sciences
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Fuad Habash
University of Arkansas for Medical Sciences
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Srikanth Vallurupalli
University of Arkansas for Medical Sciences
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Hakan Paydak
University of Arkansas for Medical Sciences
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Abstract

A 63-year-old male patient with a history of hypertension, type 2 diabetes mellitus, prostate cancer and class two obesity was admitted for altered mental status and hypertensive emergency. During his hospital stay he developed narrow complex tachycardia and it was difficult to definitively diagnose the underlying arrhythmia. Observation of the cool down phenomenon on electrocardiogram allowed us to make the diagnosis of atrial tachycardia and elegantly ruled out other causes on the differential. We report this interesting case of narrow complex tachycardia.