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Surgical management of diseased intracavitary coronary arteries
Insights
Intracavitary coronary arteries are rare but can complicate myocardial revascularization. Surgical techniques were adapted to successfully revascularize 13 patients with these unusual coronary artery locations.
Area of Science:
- Cardiovascular Surgery
- Cardiac Anatomy
Background:
- Intracavitary coronary arteries, where vessels run within cardiac chambers, are an uncommon anomaly.
- This anatomical variant can pose significant challenges during myocardial revascularization procedures.
Purpose of the Study:
- To describe the surgical management and outcomes of patients with intracavitary coronary arteries requiring revascularization.
- To highlight the challenges and successful strategies for addressing this rare condition.
Main Methods:
- Retrospective review of 13 patients undergoing revascularization for intracavitary coronary arteries (right coronary artery and left anterior descending artery).
- Analysis of surgical techniques employed, including simple closure, artery repositioning, and in-situ anastomosis.
- Evaluation of factors influencing surgical approach, such as lesion location and vessel characteristics.
Main Results:
- Successfully revascularized 13 patients with intracavitary coronary arteries.
- Reported incidence of 0.09% for right coronary artery and 0.2% for left anterior descending artery involvement.
- Demonstrated successful outcomes with various closure and anastomosis techniques without major complications.
Conclusions:
- Surgical revascularization of intracavitary coronary arteries is feasible and can be achieved with tailored techniques.
- Adaptable surgical strategies are crucial for managing the complexities associated with these rare anatomical variations.
- Successful revascularization of intracavitary vessels can be accomplished without significant adverse events.
Abstract:
An intracavitary location of a coronary artery is rare in our surgical experience with myocardial vascularization. This variant has occurred in the right coronary artery (0.09%) and in the left anterior descending coronary artery (0.2%). The location of the lesion and the pathological condition, length, and size of the coronary artery may dictate exposure of an intracavitary coronary artery for proper revascularization. More commonly, surgeons are unaware of the intracavitary position and during intramyocardial dissection of an artery will open a cardiac chamber where the vessel traverses the cavity. Problems that arise are introduction of air, difficulty in exposure due to blood and depth of position, and obstruction of the coronary artery during closure of the myotomy. We report here on 13 patients who required revascularization of intracavitary vessels (four right coronary arteries and six left anterior descending coronary arteries). The location and length of the intracavitary portion of the artery determined the surgical management. The methods used to close the cavity varied. The techniques employed were simple closure; moving the artery into an aerial position with cavitary closure behind it; anastomosis in the intracavitary position with closure of the myotomy around the graft; or selection of an alternate distal site for anastomosis. All patients treated for intracavitary arteries were successfully revascularized without major complications.