Table 2.
Differences in Hemodynamic Reactivity Parameters in Response to Mental Stress by PTSD status, n=271.
| PTSD (−) (n=239) |
PTSD (+) (n=32) |
p-value | |
|---|---|---|---|
|
Systolic Blood Pressure (mmHg)a |
|||
| Rest | 134 (21.1) | 139 (23.8) | 0.25 |
| Stress | 163 (27.1) | 167 (27.3) | 0.45 |
| Systolic Blood Pressure Reactivity |
40 (16.7) | 39 (14.6) | 0.72 |
| Heart Rate (beats/min)a | |||
| Rest | 67 (11.3) | 68 (13.0) | 0.56 |
| Stress | 83 (15.9) | 84 (19.7) | 0.58 |
| Heart Rate Reactivity | 23 (13.9) | 23 (17.6) | 0.92 |
|
Rate Pressure Product (RPP) (1000*mmHg*beats/min)a |
|||
| Rest | 9 (2.3) | 9 (2.7) | 0.26 |
| Stress | 14 (3.6) | 14 (5.2) | 0.28 |
| RPP Reactivity | 5 (3.1) | 5 (3.8) | 0.67 |
a
Continuous variables are reported as mean (standard deviation). Average values during rest and stress conditions were calculated for both PTSD positive and negative patients. Values for systolic blood pressure, heart rate, and rate pressure product reactivity were calculated by taking the difference between the average stress and rest values for each parameter.