Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons
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Acute postoperative pain often is unrelieved by conventional intramuscular and intravenous analgesic therapy. Difficulties arise from determining severity of pain, appropriate dosing, dosing intervals, health professional attitudes towards opioid administration, and the pharmacodynamics and pharmacokinetics of analgesics themselves. Patient-controlled analgesia (PCA) is a safe, effective, and increasingly popular method used to treat postoperative pain that may be applicable for patients after major oral and maxillofacial surgical procedures.
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J. Oral Maxillofac. Surg. · Jan 1992
Utility of capnography in predicting venous carbon dioxide partial pressure in sedated patients during outpatient oral surgery.
Twelve ASA class I patients scheduled for removal of third molars under intravenous sedation were included in the study. Samples for venous blood gas analysis were drawn every 5 minutes and the venous partial pressure of carbon dioxide was compared to the end-tidal CO2 recorded from a modified nasal cannula at the same time the samples were drawn. ⋯ The overall correlation between end-tidal CO2 and PVCO2 was .54 (P = .0001). The results of the investigation indicate that through simple modifications of the end-tidal CO2 monitoring device, the correlation between end-tidal CO2 and serum PCO2 in a nonintubated patient can be improved.