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Abstract Background and Aim: Swan‐Ganz catheterization is an important technique for monitoring perioperative and postoperative cardiac pressures during open heart surgery. However, although a rare condition, resistance may be encountered while removing the catheter postoperatively and its removal must be accomplished through surgery. Methods: Between May 1988 and February 2000, we observed Swan‐Ganz catheter entrapment complications in 10 cases subjected to open heart surgery. All the cases had valve replacement. Five cases were male, while five were female. The Swan‐Ganz catheter was retained in the vena cava cannulation suture in four cases, in the right atriotomy in three cases, in a left atriotomy suture in one case, and looped around the right ventricular papillary muscle in one case. In the last case, it was looped around chordae tendinea between the tricuspid valve conal papillary …