Category Archives: Hypoxemic Episodes

Hypoxemic Episodes of Patients in a Postanesthesia Care Unit: Decreasing the Incidence of Postoperative Hypoxemia

Why was the incidence of oxygen desaturation similar to other studies in which no oxygen was administered? Possibilities include inadequate oxygen delivery, increased oxygen requirements in the patient population, or refractory causes of the relative hypoxemia. Oxygen delivery to the patient by aerosol face tent can be inefficient. The patients breathing pattern, tidal volume, mask position, room air entrain-ment, as well as the oxygen concentration … Continue reading

Hypoxemic Episodes of Patients in a Postanesthesia Care Unit: Comparison of Present Results to Bast Studies

Many of the factors correlating with hypoxemic episodes in this study‚Äôs patient population agree with past findings. This is particularly apparent for patient weight, age, ASA class, duration of the surgical procedures and anesthesia, general rather than regional anesthesia, and volume of intravenous fluids received intraoperatively. However, higher narcotic doses did not result in more frequent or longer desaturations. Smoking history was also not associated … Continue reading

Hypoxemic Episodes of Patients in a Postanesthesia Care Unit: Discussion

Hypoxemic episodes have been demonstrated to occur commonly in the immediate postoperative recovery period in both adult and pediatric patients breathing room air. In the present study with patients evaluated during prophylactic oxygen administration by aerosol face tent, desaturations occurred in a minimum 25 percent of patients. The large number of recorded desaturations excluded from the study suggest that this is the minimum number of … Continue reading

Hypoxemic Episodes of Patients in a Postanesthesia Care Unit: Results

During this study of 100 postoperative patients, a total of 472 detected desaturations occurred within the set of parameters of Sa02 ^92 percent for longer than 30 s. However, on review of the hard-copy printout of saturation, pulse rate, and pulse intensity, it was apparent that most of these episodes could not be reliably interpreted as true hypoxemic episodes because of the loss of good … Continue reading

Hypoxemic Episodes of Patients in a Postanesthesia Care Unit: Materials and Methods

Mass spectrometry (Perldn-Elmer MGA 1100, Marquette Gas Monitoring Corp, St. Louis) was used to monitor end-tidal nitrous oxide so that hypoxemia from the second gas effect would not have occurred. All patients who had received regional anesthesia had been breathing 2 to 4 L/min of oxygen by nasal cannulas intraoperatively. All SaOs values were 97 percent prior to transport to PAR. During the less than … Continue reading

Hypoxemic Episodes of Patients in a Postanesthesia Care Unit

PostoPerative hypoxemia is a well-recognized and documented complication after general anesthesia and surgery when patients breathe room air during their initial recovery period. Although initial reports of postoperative hypoxemia were in patients after thoracic surgery, it has become an accepted potential hazard after general anesthesia for any surgical procedure. It is considered a significant contributing factor to the morbidity and mortality associated with anesthesia. Therapeutic … Continue reading