Author: Tim Osborne / Editor: Fiona Mendes / Codes: CC3, CP3, SLO2, SLO3Published: 04/01/2023

A 33-year-old woman attends the Emergency Department with palpitations and feeling breathless. She had felt fine until around 3 hours ago when these symptoms started. She feels lethargic and becomes dizzy on standing.

She has no significant past medical history and is not allergic to any medication.

Vital signs are as follows:

  • Oxygen Sats 96% on air
  • Respiratory rate 20 breaths per minute
  • Heart rate 220 bpm
  • Blood pressure 108/54 mmHg
  • Temperature 36.5 degrees Celsius

Her initial ECG is shown below:1

Fig.11

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