Mixed Venous Oxygen Saturation Monitoring

Mixed Venous Oxygen Saturation Monitoring

This procedure uses a fiber-optic thermodilution pulmonary artery (PA) catheter to continuously monitor oxygen delivery to tissues and oxygen consumption by tissues. Monitoring of mixed venous oxygen saturation (S[v with bar above]O2) allows rapid detection of impaired oxygen delivery, such as from decreased cardiac output, hemoglobin level, or arterial oxygen saturation. It also helps evaluate a patient’s response to drug therapy, endotracheal tube suctioning, ventilator setting changes, positive end-expiratory pressure, and fraction of inspired oxygen. S[v with bar above]O2 usually ranges from 60% to 80%.

Preparation of Equipment

Review the manufacturer’s instructions for assembly and use of the fiber-optic PA catheter. Connect the optical module and cable to the monitor. Next, peel back the wrapping covering the catheter just enough to uncover the fiber-optic connector. Attach the fiber-optic connector to the optical module while allowing the rest of the catheter to remain in its sterile wrapping. Calibrate the fiber-optic catheter by following the manufacturer’s instructions.

To prepare for the rest of the procedure, follow the instructions for pulmonary catheter insertion, as described in “Pulmonary artery pressure and pulmonary artery wedge pressure monitoring,” page 610. (See S[v with bar above]O2 monitoring equipment.)

Jul 21, 2016 | Posted by in NURSING | Comments Off on Mixed Venous Oxygen Saturation Monitoring

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