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Glossary

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Nitroglycerine (NTG)
Used as a vasodilator, especially in angina pectoris.

Obtuse Marginal
Branches of the circumflex coronary artery.

Off-Pump Coronary Artery Bypass Surgery (OPCAB)
A surgical procedure that does not use the heart-lung machine, or “pump”, to perform coronary artery bypass surgery. The heart is slowed down with medications, and a heart stabilizer is used to isolate and minimize the motion of the diseased artery.

Oxygenator
The portion of the CPB perfusion apparatus that subserves the functions of the patient’s natural lungs during periods of extracorporeal circulation. It is a device that mechanically oxygenates venous blood extracorporeally. 

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