Parameter | Low Responders | High Responders | p |
---|---|---|---|
n | 23 | 22 | |
Age (yr) | 44 ± 2 | 42 ± 2 | 0.330 |
Race (Caucasian/African American) | 12/11 | 12/10 | 0.873 |
Body mass index (kg/m2) | 29.9 ± 1.3 | 30.7 ± 1.1 | 0.618 |
Heart rate (beats/min) | 75 ± 3 | 72 ± 2 | 0.284 |
Systolic BP (mm Hg) | 142 ± 5 | 136 ± 3 | 0.300 |
Diastolic BP (mm Hg) | 83 ± 3 | 81 ± 2 | 0.620 |
MAP (mm Hg) | 103 ± 4 | 99 ± 3 | 0.449 |
ΔMAP (mm Hg) | 13.1 ± 0.7 | 24.8 ± 1.2 | <0.001 |
For continuous variables, values are means ± 1 S.E. Phenylephrine-stimulated effects are expressed as δ values of the absolute changes of MAP in mm Hg and refer to a bolus of 200 μg of phenylephrine