23rd September 2021

A 78-year-old female is brought in by ambulance after being found drowsy at her care home

A 78-year-old female is brought in by ambulance after being found drowsy at her care home. Prior to this, she had complained of chest pain, though no further history can be elicited from the care home staff. On arrival at the emergency department, she is found to have a pulse of 160 and a respiratory rate of 25.

Which of the following is the most appropriate first-line investigation?

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