A 79-year-old male was brought to the emergency department by emergency medical services (EMS) with retrosternal chest pain radiating to both shoulders. The pain started 2 hours ago while he was working in his garden. His medical history included hypertension, hypercholesterolaemia and a transient ischaemic attack. Physical examination showed tachypnoea, 37 breaths per minute, without abnormalities at pulmonary or cardiac auscultation, a heart rate of 88 beats per minute, a blood pressure of 111/73 mm Hg and unremarkable findings on abdominal examination. However, the patient looked clammy and grey. Nitroglycerine (GNT) administered sublingually relieved the pain. A partial electrocardiogram was performed by an EMS nurse (Fig. 1). Which abnormalities raise your concern?
Fig. 1
The anterior electrocardiogram leads at presentation performed by emergency medical services
A.
A new left bundle branch block
B.
The negative T wave in leads V5 and V6
C.
The ST depression in leads V2–V4
D.
The irregularity of the cardiac rhythm
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Answer
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