4th May 2025

A 30-year-old lady has a 4-hour history of intermittent palpitations.

A 30-year-old lady has a 4-hour history of intermittent palpitations. She has recently been under a lot of stress at work and has been drinking more alcohol than usual. She is otherwise fit and well and takes no regular medications.

Initial assessment shows a heart rate of 160 bpm and a blood pressure of 130/77. Auscultation of her chest is clear and heart sounds are present.

Her ECG strip is as shown below.

What is the likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.