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Eur J Cardiothorac Surg 1999;16:218-221
© 1999 Elsevier Science NL

Routine left atrial catheterization for the post-operative management of cardiac surgical patients: is the risk justified?

Division of Cardiac Surgery, University of Verona Medical School, OCM Borgo Trento, Piazzale Stefani 1, 37126 Verona, Italy

Corresponding author. Tel.: +39-45-8072476; fax: +39-45-8073308
e-mail: fsant{at}yahoo.com,

Objective: To assess the risk/benefit ratio, including cost, associated with routine left atrial catheterization for the post-operative management of patients after cardiac surgery. Methods: From November 1991 to June 1998, out of 6187 open heart procedures performed at our institution, 5815 patients (94%) receive a left atrial monitoring line inserted invasively by a unique and reproducible technique. Catheters were removed on the first or second postoperative day before chest tube removal. A subgroup of 385 patients (7%) were switched to a Swan-Ganz catheter postoperatively. Results: A total of 14 patients suffered a complication related to the left monitoring line (0.24%). Bleeding necessitating transfusion occurred in 10 patients (0.17%), seven of whom required surgical reexploration (0.12%). Catheter retention occurred in four cases (0.07%), requiring a mediastinal reexploration in one and a minimally invasive procedures in three, for removal. No other complications related to the presence of a left atrial line emerged in this series. Apart from providing crucial hemodynamic information on a routine basis, in nine selected patients (0.15%) in a low cardiac output state with increased pulmonary vascular resistance and right ventricular failure, the left atrial line was used as a preferential route for catecholamine infusion, with significant hemodynamic improvement. Conclusions: Complications of left atrial monitoring catheters in cardiac surgery do occur but at a very low and acceptable rate. No mortality was correlated to their use in our series. Complication rate can be further lowered by a meticulous management of the device. The wealth of information and therapeutic options offered by this line appears to outweigh the associated risk.

Key Words: Left atrial line • Pressures monitoring • Pulmonary vascular constriction • Open heart operations • Postoperative care