Unusual Compression of the Left Internal Mammary Artery Associated with Left Arm Hyperabduction

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Akcay Murat

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Journal Paper

Paper Information

Journal: THE JOURNAL OF TEHRAN UNIVERSITY HEART CENTER Year:2019 | Volume:14 | Issue:1 Page(s): 40-41

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Title

Unusual Compression of the Left Internal Mammary Artery Associated with Left Arm Hyperabduction

Author(s)

Akcay Murat | Issue Writer Certificate

Keywords

Chest pain

Mammary artery

Arm

Coronary angiography

Abstract

A 42-year-old male patient presented with a typical Chest pain of 2 hours’ duration. The physical examination had no additional features. The electrocardiography showed ST-segment depression in V2-V6 derivations. There were no additional risk factors except for smoking and family history. The level of cardiac troponin I was high (2. 04 ng/mL, normal range between 0 and 0. 1 ng/mL). With a diagnosis of non– ST-segment elevation myocardial infarction, a Coronary angiography was performed. It showed a severe stenosis in the distal left main, proximal intermediate, anterior descending, circumflex, and middle right coronary arteries (Video 1). Coronary artery bypass surgery was recommended. Left ventriculography showed good ventricular functions. The left internal Mammary artery (LIMA) was evaluated with angiography for use as a bypass graft. Nevertheless, the LIMA could not be visualized. As a result, the patient’ s left Arm was tightened with a blood-pressure cuff and hyperabducted so that the LIMA flow would be better visualized. An atherosclerotic plaque was detected in the proximal LIMA. The hyperabduction of the left Arm, however, led to an interruption in the LIMA flow (Figure 1 & Video 2). The compression on the LIMA was resolved after the left Arm hyperabduction was corrected (Figure 2 & Video 3). The compression recurred when the left Arm was once again hyperabducted, and it was not resolved with nitrate. Chest X-ray did not reveal any accessory rib (Figure 3). A decision was made to perform bypass surgery given the compression on the LIMA. The patient underwent a 4-vessel coronary artery bypass operation, involving saphenous vein grafts from the aorta to the right coronary artery, the circumflex artery, and the intermediate artery and a LIMA graft to the left anterior descending artery. During the operation, the LIMA flow was good and the LIMA was anastomosed to the left anterior descending artery. The LIMA was released under the pectoralis minor muscle, and the left Arm hyperabduction-associated compression was resolved. After the operation, the patient was discharged from the hospital without complications. He was asymptomatic at 6 months’ follow-up, during which the emphasis was upon symptoms related to the hyperabduction of the left Arm. There were no symptoms, and nor were there any signs of ischemia in the Stress myocardial perfusion scintigraphy.

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APA: Copy

Akcay, Murat. (2019). Unusual Compression of the Left Internal Mammary Artery Associated with Left Arm Hyperabduction. THE JOURNAL OF TEHRAN UNIVERSITY HEART CENTER, 14(1), 40-41. SID. https://sid.ir/paper/302175/en

Vancouver: Copy

Akcay Murat. Unusual Compression of the Left Internal Mammary Artery Associated with Left Arm Hyperabduction. THE JOURNAL OF TEHRAN UNIVERSITY HEART CENTER[Internet]. 2019;14(1):40-41. Available from: https://sid.ir/paper/302175/en

IEEE: Copy

Murat Akcay, “Unusual Compression of the Left Internal Mammary Artery Associated with Left Arm Hyperabduction,” THE JOURNAL OF TEHRAN UNIVERSITY HEART CENTER, vol. 14, no. 1, pp. 40–41, 2019, [Online]. Available: https://sid.ir/paper/302175/en

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