QuestionSBA
QuestionChoice
Incorrect - The left bundle branch receives its blood supply from the left anterior descending artery, a branch of the left coronary artery. As the blood supply to this area during the myocardial infarction would not have been disrupted, it is unlikely that any damage occurred.
10008314
e
Left Bundle Branch
QuestionChoice
Correct - The posterior interventricular artery is typically a branch of the right coronary artery. It runs along the posterior sulcus of the heart and supplies area in which the sinoatrial node is located.
10008310
a
Atrioventricular Node
QuestionChoice
Incorrect - The sinoatrial nodal artery supplies the sinoatrial node and is not associated with the posterior interventricular artery. As blood supply to this area during the myocardial infarction would not have been disrupted, it is unlikely that any damage occurred.
10008311
b
Sinoatrial node
QuestionChoice
Incorrect - The purkinjie fibres receive their blood supply from the circumflex branch of the left coronary artery. As the blood supply to this area during the myocardial infarction would not have been disrupted, it is unlikely that any damage occurred.
10008312
c
Purkinje Fibres
QuestionChoice
Incorrect - The right bundle branch receives its blood supply from the left anterior descending artery, a branch of the left coronary artery. As the blood supply to this area during the myocardial infarction would not have been disrupted, it is unlikely that any damage occurred.
10008313
d
Right Bundle Branch
Concept
Chapter
2693
3802
Myocardial Infarction
Topic
134
Cardiology
14209
A 83-year-old male presents to A&E with central chest pain. An ECG reveals ST elevation across the inferior leads. He undergoes a percutaneous coronary intervention (PCI), which identifies blockage of the posterior interventricular artery.

Which of the following cardiac structures is most likely to have been damaged?
a