Table 3 Heart rate and blood pressure responses before and during 60º head-up tilt
From: Effect of coronary artery bypass grafting on blood pressure response to head-up tilting
| Group | Baseline | HUT3 | HUT6 | HUT9 | HUT12 | HUT15 | |
|---|---|---|---|---|---|---|---|
| HR beats/min | Healthy | 74 (63–75) | 79 (71–83)† | 79 (71–81)† | 81 (74–83)† | 79 (74–84)† | 79 (73–81)† |
| Before | 66 (59–71) | 66 (66–79) | 70 (65–74) | 68 (66–78) | 68 (66–80) | 70 (65–78) | |
| After | 75 (61–84) | 84 (69–89)**† | 83 (68–88)**† | 84 (67–87)**† | 85 (67–90)**† | 85 (69–89)**† | |
| MAP mmHg | Healthy | 89 (86–99) | 95 (81–105) | 89 (82–102) | 88 (85–104) | 90 (85–100) | 93 (84–104) |
| Before | 91 (90–103) | 93 (90–95) | 95 (82–96) | 85† (83–98) | 91† (84–96) | 95 (88–96) | |
| After | 89 (88–90)** | 80 (79–84)**† | 78 (75–82)**† | 79 (77–82)**† | 78 (74–85)**† | 80 (76–83)*† | |
| SBP mmHg | Healthy | 123 (116–140) | 120 (114–143) | 118 (113–143) | 116 (114–137)† | 119 (112–134)† | 124 (114–143) |
| Before | 138 (133–149) | 139 (129–143) | 134 (130–144) | 126 (125–137)† | 131 (122–139)† | 130 (125–141)† | |
| After | 121 (116–131)** | 113 (106–121)**† | 108 (106–114)**† | 110 (102–112)**† | 105 (99–114)**† | 107 (102–117)**† | |
| DBP mmHg | Healthy | 76 (69–79) | 82 (65–85) | 74 (67–80) | 75 (71–84) | 76 (71–80) | 77 (69–81) |
| Before | 76 (66–80) | 69 (67–77) | 70 (64–78)† | 69 (64–72)† | 73 (66–74)† | 73 (66–77) | |
| After | 70 (64–75) | 66 (63–70) | 63 (61–67)*† | 64 (57–67)† | 63 (60–68) | 65 (61–68) |