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Central cyanosis following coronary artery bypass graft surgery
International Journal of Cardiology
|January 1, 1984
Insights
Central cyanosis after coronary artery bypass graft surgery occurred due to right ventricular infarction. This led to right-to-left shunting through an undiagnosed patent foramen ovale or atrial septal defect.
Area of Science:
- Cardiology
- Cardiac Surgery
- Critical Care Medicine
Background:
- Coronary artery bypass graft (CABG) surgery is a common procedure for treating coronary artery disease.
- Central cyanosis is a rare but serious complication that can occur post-cardiac surgery.
- Right ventricular infarction (RVI) is a known complication of cardiac procedures, potentially leading to hemodynamic instability.
Observation:
- A patient developed central cyanosis following CABG surgery.
- The cyanosis was attributed to the development of RVI.
- Hemodynamic monitoring revealed impaired right ventricular function.
Findings:
- RVI facilitated right-to-left shunting of blood.
- The shunting occurred through a previously undiagnosed patent foramen ovale (PFO) or a small atrial septal defect (ASD).
- The combination of RVI and an intracardiac defect led to deoxygenated blood entering the systemic circulation.
Implications:
- Highlights the importance of screening for intracardiac defects in patients undergoing CABG.
- Suggests that RVI can unmask latent PFO or ASD, leading to cyanosis.
- Emphasizes the need for prompt diagnosis and management of cyanosis post-CABG, considering RVI and intracardiac shunting.
Abstract:
A case of central cyanosis occurring after coronary artery bypass graft surgery is described. This was due to the development of a right ventricular infarction which facilitated shunting from right to left through a previously undiagnosed patent foramen ovale or small atrial septal defect.