Table 2.

Derived indexes of contractile function at 1 h of recovery

	Regional Frank-Starling Relation Slope	Regional Frank-Starling Relation Intercept	RV Preload- Adjusted Regional External Work
Pericardium open,  without dobuta-  mine (n=9)	0.82±0.08*	1.17±0.05*	0.55±0.13*
Pericardium closed,  without dobuta-  mine (n=7)	1.05±0.07	0.99±0.02	1.11±0.10†
Pericardium open,  with dobutamine  (n=6)	0.70±0.13	1.19±0.08	0.53±0.15*
Pericardium closed,  with dobutamine  (n=6)	0.74±0.08*	1.04±0.02	0.67±0.09*

Values are means ± SE (fraction of baseline); n, no. of pigs.

^*P < 0.05 vs. baseline.

^†P < 0.05 vs. other groups.