Body build and preoperative arterial oxygen tensions

Retinal vasoconstriction in premature infants with increased arterial oxygen tensions.

Baum, J. D., and Bulpitt, C. J. (1970). Archives of Disease in Childhood, 45, 350. Retinal vasoconstriction in premature infants with increased arterial oxygen tensions. Retinal vessels of newborn and premature infants were photographed under conditions of increasing arterial oxygen tension and the changes in vessel diameter were measured. In 6 infants studied, there was a consistent pattern of...

Alveolar and arterial oxygen tensions and the significance of the alveolar-arterial oxygen tension difference in normal men.

Arterial oxygen tensions measured continuously in patients breathing 21% oxygen and nitrous oxide or air.

Changes in arterial oxygen tensions in nine anaesthetized patients during controlled ventilation with either 79% nitrous oxide in oxygen or air only, were measured continuously using an intra-arterial oxygen electrode. When the patients were ventilated with the mixture, there was a significant increase in PaO2 of 2.74 +/- 1.08 kPa (P less than 0.002) over control values obtained while the subje...

Assessments for oxygen therapy in COPD: are we under correcting arterial oxygen tensions?

There is little data about the use of different oxygen sources during assessment for long-term oxygen therapy (LTOT) and how this impacts upon blood oxygen tensions and prescribed flow rates. Patients with chronic obstructive pulmonary disease (COPD), n=30, had assessments for LTOT using both an oxygen-concentrator and piped hospital oxygen (wall-oxygen) as supply sources. In addition, a random...

Estimation of arterial oxygen and carbon dioxide tensions by a single transcutaneous sensor.

A transcutaneous electrochemical sensor designed to estimate arterial oxygen (Pao2) and carbon dioxide (Paco2) tensions simultaneously and continuously was evaluated in newborn infants with respiratory illnesses. After calibration with two dry gas mixtures the sensor gave estimates of Pao2 and Paco2 that were comparable with those obtained by two separate electrodes that are already established...