Instrumental variability of respiratory blood gases among different blood gas analysers in different laboratories.

The aim of this study was to test the hypothesis that differences in oxygen tension (PO2) and carbon dioxide tension (PCO2) values from measurements performed on different blood gas analysers in different laboratories are clinically insignificant. Samples of fresh whole human tonometered blood (PO2 8.1 kPa (60.

Epidural morphine anesthesia for abdominal aortic surgery--pharmacokinetics.

Plasma and CSF pharmacokinetics of morphine given epidurally in combination with general anesthesia for abdominal aortic surgery were recorded. The initial plasma and CSF concentrations of morphine appeared at two minutes. The peak plasma concentrations of morphine were recorded at 8.

The pharmacokinetics of intradural morphine in major abdominal surgery.

The pharmacokinetics of intradural morphine used for major abdominal surgery were evaluated. Lumbar spinal fluid and plasma concentrations were measured at intervals after morphine 0.05 mg/kg had been injected intradurally in 21 patients scheduled for elective abdominal aortic surgery.

A comparative study of the electrode systems of three pH and blood gas apparatus.

We present a comparative evaluation of the electrode systems of three modern blood gas analysers: IL-413, ABL-1 and AVL-937C. The response curves, accuracy and precision of the pH-, pCO2- and pO2-electrodes were established with tonometered blood and buffer solutions. pH values (range 6.

The effects of highly selective vagotomy on secretion and emptying of the stomach.

The results of a prospective study of 60 patients with nonobstructive duodenal ulcer treated by highly selective vagotomy show that the gastric acid secretion postoperatively is effectively reduced. Judgment of completeness of highly selective vagotomy is only possible by means of an intragastric pH-metry during operation. The Hollander test answers it insufficiently.

Evaluation of ampouled tonometered buffer solutions as a quality-control system for pH, pCO2, and pO2 measurement.

In response to the need for an adequate quality-control system for blood-pH and blood-gas analyzers, we investigated the practical application of ampouled phosphate-bicarbonate-chloride solutions tonometered with mixtures of carbon dioxide, oxygen, and nitrogen. This system offers three discrete sets of pH, pCO2, AND PO2 values, which are consistent with normal and pathophysiologically high and low values. The stated values were based on the U.