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What is the mechanism of tachycardia?
  1. Peter Kabunga1,
  2. Emily Hodkinson1,
  3. Raymond W Sy1,2
  1. 1Department of Cardiology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
  2. 2Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
  1. Correspondence to Dr Raymond W Sy, Department of Cardiology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia; raymond.sy01{at}gmail.com

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CLINICAL INTRODUCTION

A 56-year-old man was referred for an electrophysiology opinion following an unexplained episode of syncope leading to a motor vehicle accident. Routine baseline investigations including an echocardiogram were normal. Following admission, the telemetry strip below was recorded (Figure 1). What is the mechanism of tachycardia?

Figure 1

Telemetry strip.

Case history

A 56-year-old man was referred for an electrophysiology opinion following an unexplained episode of syncope leading to a motor vehicle accident. Routine baseline investigations including an echocardiogram were normal. Following admission, the telemetry strip (Figure 1) was recorded. What is the mechanism of tachycardia?

Question

What is the mechanism of the …

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