seven animals paced at 250 beats/min for 3 weeks ( vp1 group ) showed an increase in cardiac size from 78.5 +/- 9.5 ( sd ) to 105.8 +/- 13.0 cm2 , a reduction in mean arterial pressure from 149 +/- 7 to 130 +/- 21 mm hg , a fall in cardiac index from 196 +/- 57 to 125 +/- 37 ml/kg/min , and an increase in left ventricular filling pressure from 6 +/- 5 to 22 +/- 9 mm hg and in right atrial pressure from 2 +/- 2 to 5 +/- 3 mm hg .
C0018787
cardiac
C0225897
left ventricular