QuestionSBA
QuestionChoice
This supplies the anterior region and apex of the heart, including the cardiac structures around the interventricular septum of the heart. Occlusion of the left anterior descending artery would appear as V1-V4 ST-segment elevations on an ECG. By contrast, this ECG shows ST-elevations in leads II, III and aVF.
10007771
b
Left anterior descending artery
QuestionChoice
This artery is a branch of the left main coronary artery and supplies the lateral aspect of the left ventricle all the way to the apex. By contrast, this patient demonstrates ECG changes in the inferior region of the heart.
10007773
d
Left marginal artery
QuestionChoice
This artery is a branch of the right coronary artery, which supplies the posterior aspect of the heart at the posterior interventricular septum. This can present as tall R waves in leads V1 and V2. By contrast, this patient demonstrates ECG changes in the inferior region of the heart.
10007774
e
Posterior interventricular artery
QuestionChoice
The left circumflex coronary artery supplies the left atrium and the postero-lateral aspect of the left ventricle. This would lead to ST-segment elevations in the lateral leads, rather than inferior leads.
10007772
c
Left circumflex coronary artery
QuestionChoice
The ECG shows ST-elevations in leads II, III and aVF. The leads II,III and aVF represent the electrical activity occurring in the inferior region of the heart which consists of the right ventricle and the right atrium of the heart. These are supplied by the right coronary artery.
10007770
a
Right coronary artery
Concept
Chapter
2693
3713
Myocardial infarction and Acute Coronary Syndrome (ACS)
Topic
134
Cardiology
14101
Picture
1521
Inferior_and_RtV_MI_12_lead.jpg
images/gv459ato1682329916101.jpg
images/gv459ato1682329916101_256.jpg
images/gv459ato1682329916101_512.jpg
oSgGBIA/dnhsh3h3h4geTwilkA==
Topic
134
Cardiology
A 68-year-old man presents to A&E with central crushing chest pain referring to the jaw and arm. He also reports feeling sweaty and nauseous. A subset of an acute coronary syndrome is suspected, in particular a myocardial infarction.

An ECG of this patient is taken shown below: [lightgallery]

Which of the following arteries is most likely to have become occluded?
a