Differences in parametric variables between a positive and a negative metaraminol test
| Negative (n=30) | Positive (n=13) | p Value | |
|---|---|---|---|
| Age (years) | 59.5 (6.6) | 61.2 (7.9) | NS |
| Basal SBP (mm Hg) | 132.8 (15.3) | 126.5 (15.1) | NS |
| Postinfusion SBP (mm Hg) | 203.1 (5.7) | 189.8 (17.7) | < 0.02 |
| Basal HR (beats/min) | 66.1 (11.5) | 72.5 (16.7) | NS |
| Postinfusion HR (beats/min) | 53.1 (10.9) | 64.8 (17.5) | < 0.05 |
| HR change (beats/min) | 13 (2.3) | 7.7 (13.4) | NS |
| LVEF (%) | 61.9 (8.7) | 44.5 (9.1) | < 0.0009 |
| LVEDP (mm Hg) | 11.7 (3.9) | 12.5 (4.2) | NS |
EDP, end diastolic pressure; LVEF, left ventricular ejection fraction; HR, heart rate; SBP, systolic blood pressure.