| Effect of High Frequency Jet Ventilation alone or with Positive End Expiratory Pressure on the Arterial Oxygenation during One Lung Ventilation. |
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Hyun Kyo Lim, Jeong Sim Park, Soon Yul Kim, Young Bok Lee |
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Department of Anesthesiology, Yonsei University Wonju College of Medicine, Wonju, Korea. |
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| Abstract |
BACKGROUND
Hypoxemia during one lung ventilation (OLV) may occur in spite of high inspired oxygen concentration. The purpose of this study was to evaluate the effect of highfrequency jet ventilation (HFJV) alone to the non-ventilated lung or in combination with 5 cmH2O of positive end expiratory pressure (PEEP) to the ventilated lung on arterial oxygenation (PaO2) during OLV for thoracic surgery.
METHODS
After endotracheal intubation with double lumen tube, arterial blood gases were measured 20 minutes after stabilization had occurred following onset of OLV, HFJV, and HFJV with 5 cmH2O of PEEP.
RESULT
The mean PaO2 during OLV was 257.5+/-81.7 mmHg, and application of HFJV alone or with PEEP resulted in a significant increase in PaO2 to 356.6+/-79.1 mmHg and 354.9+/-66.6 mmHg, respectively (p<0.001). Alveolar-arterial oxygen differences were significantly decreased as compared to OLV.
CONCLUSION
Both HFJV alone or in combination with 5cmH2O of PEEP are effective to improve oxygenation during OLV. |
| Key Words:
Oxygen: tension; Ventilation: one-lung; high frequency jet; positive end expiratory pressure |
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