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Anaphylactic reaction to latex in health care workers.

Single-lung anesthesia frequently presents a challenge in maintaining arterial saturation due to exaggerated shunt. While many anesthesiologists advocate the use of intermittent ventilation or continuous positive airway pressure to the nonventilated lung, I have found a very simple solution to prevent desaturation during onelung anesthesia. Instead of allowing the nonventilated lung to collapse completely, I allow for only partial collapse of the lung. This is easily accomplished by watching the lung deflate and recapping the bronchial port on the side of the nonventilated lung prior to full collapse of the lung. Should the arterial saturation decrease to less than 93%, I simply unclamp the previously nonventilated lung for two to three respiratory cycles, then reapply the clamp and resume single-lung ventilation. This simple technique has proved to be so effective in preventing arterial desaturation that continuous positive airway pressure has become unnecessary in almost all cases.