Atypical proximal coarctation of the aorta: reconstruction by means of a heparin-coated temporary shunt bypass.

Coarctation of the aorta may be found proximal to or involving the left subclavian artery. In this situation, adequate collateral may not be present, making aortic occlusion unduly dangerous. Simple and effective bypass protection can be achieved with a heparin-coated temporary shunt as illustrated in two patients described in this report.