Table 2. Hemodynamic Responses to Cold Pressor Test.
| Baseline | 10s | 20s | 30s | ANOVA | |
|---|---|---|---|---|---|
| Δ MAP (mmHg) | Time P<0.01 | ||||
| -FH | 86 ± 11 | 87 ± 11 | 86 ± 11 | 90 ± 13 | Interaction P=0.46 |
| +FH | 87 ± 14 | 91 ± 13 | 90 ± 15 | 92 ± 14 | |
|
| |||||
| Δ SBP (mmHg) | Time P=0.01 | ||||
| -FH | 127 ± 14 | 129 ± 17 | 128 ± 19 | 131 ± 22 | Interaction P=0.49 |
| +FH | 132 ± 19 | 138 ± 18 | 136 ± 19 | 138 ± 17 | |
|
| |||||
| Δ DBP (mmHg) | Time P<0.01 | ||||
| -FH | 67 ± 10 | 67 ± 9 | 67 ± 9 | 70 ± 10 | Interaction P=0.69 |
| +FH | 66 ± 13 | 68 ± 14 | 67 ± 15 | 70 ± 15 | |
|
| |||||
| Δ HR (bpm) | Time P<0.01 | ||||
| -FH | 65 ± 6 | 69 ± 5 | 69 ± 5 | 69 ± 3 | Interaction P=0.04 |
| +FH | 64 ± 12 | 68 ± 13 | 71 ± 13 | 73 ± 14 | |
|
| |||||
| CO (L/min) | |||||
| -FH | 4.5 ± 0.9 | 4.9 ± 1.0 | 4.9 ± 1.1 | 4.9 ± 1.1 | Time P<0.01 |
| +FH | 5.1 ± 1.4 | 5.5 ± 1.5 | 5.6 ± 1.6 | 5.7 ± 1.8 | Interaction P=0.10 |
|
| |||||
| TPR (cgs) | |||||
| -FH | 1770 ± 290 | 1677 ± 266 | 1659 ± 261 | 1740 ± 253 | Time P=0.10 |
| +FH | 1733 ± 605 | 1700 ± 578 | 1613 ± 528 | 1641 ± 532 | Interaction P=0.08 |
MAP, mean arterial pressure; SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate; CO, Cardiac Output; TPR, total peripheral resistance; -FH, without family history of hypertension; +FH, positive family history of hypertension. Data presented as mean±SD.