A comparison between right atrial and pulmonary arterial oxygen tensions.
Oxygen tensions of 50 simultaneously withdrawn blood samples from the right atrial orifice of a triple-lumen pulmonary artery catheter and from the pulmonary artery lumen were compared. Mixed venous oxygen tensions ranged from 21 mmHg to 44.9 mmHg. The correlation coefficient was 0.96 (t = 2.09; P = 0.01). The benefits and drawbacks of intermittent right atrial oxygen tension monitoring are discussed.
D006328:Cardiac Catheterization; D006325:Heart Atria; D006801:Humans; D010100:Oxygen / Q000097:blood*; D010313:Partial Pressure; D011651:Pulmonary Artery
D010100:Oxygen