Table 1.

Heart rate and mean arterial pressure for different conditions and tidal volumes^a

Tidal Volume (mL/kg)	Heart Rate (beats/min)	Mean Arterial Pressure (mm Hg)
Baseline
5	134 ± 23	127 ± 28
10	135 ± 23	125 ± 31
15	132 ± 21	121 ± 27
20	131 ± 23	113 ± 25
Volume loading
5	125 ± 18	122 ± 9
10	130 ± 13	123 ± 10
15	128 ± 13	121 ± 11
20	126 ± 16	116 ± 7
Dobutamine
5	140 ± 14	128 ± 19
10	141 ± 16	131 ± 20
15	141 ± 16	132 ± 19
20	142 ± 18	124 ± 17
Esmolol
5	114 ± 14	104 ± 15
10	114 ± 13	104 ± 16
15	116 ± 14	104 ± 17
20	115 ± 15	99 ± 17

^aData are mean ± so: n = 7.