Table 4. Subgroup Analysis of Patients Stratified as No Success.
| Variable | No Clear Success (n = 182) | Postoperative Hypertension (n = 166 [91.2%]) | Postoperative Normotension (n = 16 [8.8%]) | P Value for Comparison Between Groups | |
|---|---|---|---|---|---|
| Preoperative | |||||
| SBP, mean (SD), mm Hg | 155 (22) | 156 (21) | 139 (16) | .001 | |
| DBP, mean (SD), mm Hg | 91 (15) | 92 (14) | 82 (12) | .006 | |
| Preoperative hypertension grade, No. (%)a | |||||
| 0 | 35 (19.2) | 26 (15.7) | 9 (56.3) | .001 | |
| 1 | 69 (37.9) | 65 (39.2) | 4 (25.0) | ||
| 2 | 54 (29.7) | 51 (30.7) | 3 (18.8) | ||
| 3 | 24 (13.2) | 24 (14.5) | 0 | ||
| No. of antihypertensives/d, median (range)b | 3 (0 to 7) | 3 (0 to 7) | 2 (0 to 6) | .06 | |
| DDD (n = 173)b | |||||
| Median (range) | 4.3 (0.0 to 22.3) | 4.3 (0.0 to 22.3) | 4.0 (0.0 to 12.0) | .43 | |
| No. of pills/d (n = 173)b | |||||
| Median (range) | 4 (0 to 9) | 4 (0 to 9) | 2 (0 to 9) | .02 | |
| Postoperative | |||||
| SBP, mean (SD), mm Hg | 147 (15) | 149 (13) | 122 (13) | <.001 | |
| DBP, mean (SD), mm Hg | 89 (11) | 90 (10) | 74 (9) | <.001 | |
| Preoperative hypertension grade, No. (%)a | |||||
| 0 | 16 (8.8) | 0 | 16 (100) | <.001 | |
| 1 | 117 (64.3) | 117 (70.5) | 0 | ||
| 2 | 41 (22.5) | 41 (24.7) | 0 | ||
| 3 | 8 (4.4) | 8 (4.8) | 0 | ||
| No. of antihypertensives/d, median (range)b | 2 (0 to 6) | 1 (0 to 6) | 3.5 (1 to 6) | <.001 | |
| DDD (n = 166)b | |||||
| Median (range) | 2.0 (0.0 to 9.8) | 1.7 (0.0 to 7.5) | 3.4 (1.0 to 9.8) | .01 | |
| No. of pills/d (n = 168)b | |||||
| Median (range) | 2 (0 to 9) | 1 (0 to 8) | 4 (0 to 9) | .001 | |
| Preoperative-Postoperative Change | |||||
| SBP, mean (SD), mm Hg | 9 (22)c | 8 (23)c | 16 (17)c | .16 | |
| DBP, mean (SD), mm Hg | 3 (15)c | 2 (15) | 8 (15)c | .12 | |
| SBP, mean (SD), % | 4.3 (14.0)c | 3.6 (14.1)c | 10.9 (11.6)c | .05 | |
| DBP, mean (SD), % | 1.5 (15.1)c | 0.9 (14.7) | 8.3 (17.4)c | .06 | |
| No. of antihypertensives/db | |||||
| Median (range) | 1 (−3 to 5)c | 2 (−2 to 5)c | 0 (−3 to 0) | <.001 | |
| Median (range), % | 50 (−100 to 100)c | 50 (−100 to 100)c | 0 (−100 to 0) | <.001 | |
| DDD (n = 160)b | |||||
| Median (range) | 2.0 (−4.3 to 20.7)c | 2.0 (−4.3 to 20.7)c | 0.0 (−4.0 to 9.5) | .006 | |
| Median (range), % | 53 (−400 to 100)c | 60 (−256 to 100)c | 0 (−400 to 79) | .001 | |
| No. pills/d (n = 163)b | |||||
| Median (range) | 2 (−3 to 6)c | 2 (−3 to 6)c | 0 (−3 to 1) | <.001 | |
| Median (range), % | 50 (−100 to 100)c | 50 (−100 to 100)c | 0 (−100 to 50) | <.001 | |
Abbreviations: DBP, diastolic blood pressure; DDD, defined daily dose; ESH, European Society of Hypertension; JNC, Joint National Commission; SBP, systolic blood pressure.
a
Grade 0, SBP less than 140 mm Hg and DBP less than 90 mm Hg; grade 1, SBP 140 to 159 mm Hg and/or DBP 90 to 99 mm Hg; grade 2, SBP 160 to 179 mm Hg and/or DBP 100 to 109 mm Hg; and grade 3, SBP 180 mm Hg or higher or DBP 110 mm Hg or higher.20,21
b
Values not normally distributed given as medians (range).
c
Significant (P < .05) preoperative-postoperative change.