Evaluation of partial carbon dioxide rebreathing cardiac output measurement during thoracic surgery.

Objective: Noninvasive partial CO2 rebreathing (NICO; Novametrix Medical Systems, Inc, Wallingford, CT) is a relatively new alternative to thermodilution (TDCO) for measurement of cardiac output. This study compares the 2 methods during thoracic surgery and one-lung ventilation.

Design: A prospective, observational study.

The effects of remifentanil and thoracic epidural on oxygenation and pulmonary shunt fraction during one-lung ventilation.

Objective: To compare the effects of remifentanil and thoracic epidural analgesia on the hemodynamic changes and pulmonary shunt fraction during one-lung ventilation (OLV) for thoracotomy.

Design: Prospective, single crossover design.

Setting: Tertiary care hospital.

Predicting the depth of insertion of left-sided double-lumen endobronchial tubes.

Objective: To analyze the parameters that predict the depth of insertion of a left-sided double-lumen tube (DLT) and to assess the accuracy of the parameters after intubation.

Design: Prospective.

Setting: Tertiary-care hospital.