Document Classification

Section Type: RESULTS

Text: The cardiac output increased from a mean of 4. 5 + / - 1. 7 L/min (95 % confidence intervals : 4. 0 to 5. 0 L/min) during ventricular demand pacing to 5. 3 + / - 1. 7 L/min (95 % confidence intervals : 4. 9 to 5. 9 L/min) during atrioventricular pacing (p less than. 0001) despite trivial decreases in CVP from 14 + / - 4 mm Hg (95 % confidence intervals : 13 to 15 mm Hg) to 13 + / - 5 mm Hg (95 % confidence intervals : 12 to 15 mm Hg) and pulmonary artery occlusion pressure from 18 + / - 5 mm Hg (95 % confidence intervals : 16 to 20 mm Hg) to 17 + / - 5 mm Hg (95 % confidence intervals : 15 to 18 mm Hg).