PMC9461690_01
Nuclear stress test showing fixed perfusion defect in the inferior wall possibly due to diaphragmatic motion artifact.
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F1
A nuclear stress test showed a fixed perfusion defect involving the inferior wall, possibly due to diaphragmatic attenuation artifact with no evidence of stress-induced myocardial ischemia, and a mildly decreased left ventricular ejection fraction of 44% (Figure 1).
(A, B) Coronary artery angiography left anterior oblique view of the SA nodal artery arising from the right posterolateral artery. SA: sinoatrial
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F2
Coronary angiography revealed two-vessel coronary artery disease, 80% stenosis of the middle right coronary artery (RCA), diffuse heavy calcification of the left anterior descending artery (LAD) involving the proximal and mid-portions with 80% maximal stenosis, a small caliber left marginal, and a sinoatrial (SA) nodal branch originating from the right posterolateral artery (RPLA) (Figure 2 A, B).