BACKGROUND
Progress in the techniques of mitral valve replacement (MVR) surgery and the resultant high efficacy and safety have led to its widespread use. (1-3) However, MVR may be rarely associated with serious complications. Acute myocardial infarction following MVR is amongst these serious complications that result from the compressive effect of the mitral valve prosthesis on the adjacent coronary arteries, particularly the left circumflex coronary artery (LCX) and the posterior artery of the left ventricle (LV). (3-6) Iatrogenic damage to the LCX following MVR is rare, but it may constitute a complicated and life-threatening injury. (1, 2, 7) The existing literature contains a dearth of information on post-MVR iatrogenic LCX injury; accordingly, we herein present a case of LCX injury secondary to MVR, managed with conservative medical treatment. Additionally, we discuss the causes of this infrequent complication and the treatment of choice. (4)