Background
Methods
Participants and procedures
Participants
Procedures
Measurements of systemic hemodynamic parameters
Measurements of cerebral hemodynamic parameters
Statistical analysis
Results
Clinical characteristics of the subjects
Alterations in systemic and cerebral hemodynamics
Sea level | 3700 m | p value | |
---|---|---|---|
Systemic hemodynamics | |||
SBP | 116.32 ± 15.24 | 115.84 ± 11.84 | 0.782 |
DBP | 74.65 ± 10.93 | 76.24 ± 9.40 | 0.156 |
ΔBP | 41.67 ± 11.71 | 39.61 ± 8.05 | 0.131 |
MAP | 88.54 ± 11.25 | 89.44 ± 9.55 | 0.444 |
HR | 63.58 ± 10.19 | 83.98 ± 11.90 | <0.001** |
SpO2
| 98.34 ± 1.06 | 88.72 ± 2.71 | <0.001** |
LA | 30.91 ± 1.73 | 30.00 ± 1.92 | <0.001** |
LV | 46.47 ± 2.45 | 46.15 ± 2.04 | 0.184 |
RA | 35.70 ± 2.23 | 34.21 ± 2.15 | <0.001** |
RV | 35.49 ± 2.08 | 33.72 ± 2.42 | <0.001** |
PA | 20.24 ± 1.60 | 19.92 ± 1.60 | 0.097 |
EF | 62.94 ± 5.49 | 66.56 ± 3.92 | <0.001** |
SV | 65.24 ± 12.22 | 67.30 ± 8.31 | 0.088 |
CO | 4.16 ± 0.95 | 5.32 ± 1.09 | <0.001** |
Tricuspid regurgitation | 0.500 (1.00) | 0.500(0.500) | 0.885 |
Cerebral hemodynamics | |||
Left side MCA | |||
Vm
| 62.08 ± 10.39 | 65.79 ± 11.78 | <0.001** |
Vs
| 95.95 ± 14.60 | 99.80 ± 15.93 | 0.002** |
Vd
| 42.69 ± 7.91 | 46.47 ± 9.07 | <0.001** |
PI | 0.867 ± 0.133 | 0.817 ± 0.133 | <0.001** |
RI | 0.554 ± 0.048 | 0.534 ± 0.048 | <0.001** |
Left side VA | |||
Vm_
| 32.77 ± 5.14 | 35.20 ± 5.83 | <0.001** |
Vs_
| 50.70 ± 7.50 | 51.57 ± 7.91 | 0.233 |
Vd_
| 21.91 ± 4.095 | 24.82 ± 4.86 | <0.001** |
PI | 0.895 ± 0.181 | 0.770 ± 0.168 | <0.001** |
RI | 0.570 ± 0.067 | 0.516 ± 0.061 | <0.001** |
Right side MCA | |||
Vm
| 58.79 ± 10.18 | 63.25 ± 11.58 | <0.001** |
Vs
| 90.50 ± 14.18 | 94.71 ± 15.01 | <0.001** |
Vd
| 40.35 ± 7.49 | 44.55 ± 9.04 | <0.001** |
PI | 0.864 ± 0.150 | 0.804 ± 0.130 | <0.001** |
RI | 0.556 ± 0.055 | 0.530 ± 0.050 | 0.293 |
Right side VA | |||
Vm
| 34.33 ± 4.77 | 36.47 ± 5.73 | <0.001** |
Vs
| 50.60 ± 6.55 | 51.78 ± 7.83 | 0.058 |
Vd
| 23.24 ± 4.12 | 25.90 ± 4.55 | <0.001** |
PI | 0.808 ± 0.162 | 0.715 ± 0.117 | <0.001** |
RI | 0.539 ± 0.061 | 0.499 ± 0.048 | <0.001** |
BA | |||
Vm
| 39.66 ± 7.75 | 41.85 ± 9.58 | 0.002** |
Vs
| 67.93 ± 13.57 | 66.19 ± 13.46 | 0.117 |
Vd
| 25.07 ± 5.85 | 28.59 ± 7.71 | <0.001** |
PI | 1.093 ± 0.251 | 0.920 ± 0.220 | <0.001** |
RI | 0.627 ± 0.068 | 0.567 ± 0.073 | <0.001** |
Asymmetry of the bilateral VAs | |||
ΔVs
| 0.0 (11.0) | 0.0 (12.0) | 0.645 |
ΔVd
| −1.0 (6.0) | −1.0 (6.0) | 0.623 |
ΔVm
| −1.0 (7.0) | −2.0 (8.0) | 0.529 |
AI% | −3.5 (20.2) | −2.9 (18.1) | 0.190 |
Conduction | |||
CVCi | 0.695 ± 0.145 | 0.730 ± 0.149 | 0.011* |
Clinical and hemodynamic characteristics of HAH at 3700 m
Headachea
| HAH- | HAH+ | HAH intensities | p (H+ vs. H-) | ||
---|---|---|---|---|---|---|
Cases(n) | (90) | (273) | Mild (215) | Moderate (52) | Sever (6) | |
Demographic factors | ||||||
Age | 22.59 ± 3.95 | 23.60 ± 4.48 | 23.12 ± 4.26 | 25.47 ± 4.99 | 25.00 ± 3.69 | 0.044* |
BMI | 21.52 ± 2.11 | 21.90 ± 2.61 | 21.85 ± 2.55 | 21.96 ± 2.89 | 23.56 ± 2.09 | 0.199 |
Smoking(yes) | 20(22.2%) | 66(24.2%) | 52(24.2%) | 11(21.2%) | 3(50.0%) | 0.705 |
Alcohol consumption(yes) | 54(60.0%) | 159(58.2%) | 126 (58.6%) | 28(53.8%) | 5(83.3%) | 0.796 |
Systemic hemodynamics | ||||||
SBP | 117.28 ± 11.62 | 118.66 ± 12.03 | 118.84 ± 12.38 | 118.17 ± 11.04 | 116.67 ± 7.76 | 0.340 |
DBP | 77.52 ± 10.83 | 78.86 ± 9.97 | 78.89 ± 10.21 | 78.92 ± 9.26 | 77.33 ± 8.43 | 0.279 |
ΔBP | 39.76 ± 7.14 | 39.80 ± 6.59 | 39.94 ± 7.04 | 39.25 ± 4.54 | 39.33 ± 5.24 | 0.958 |
MAP | 90.77 ± 10.57 | 92.13 ± 10.24 | 92.21 ± 10.47 | 92.01 ± 9.65 | 90.44 ± 7.83 | 0.280 |
HR | 84.41 ± 13.11 | 87.96 ± 13.02 | 87.35 ± 12.65 | 89.35 ± 13.26 | 98.00 ± 20.66 | 0.026* |
SpO2
| 88.70 ± 2.98 | 87.94 ± 3.19 | 88.16 ± 3.01 | 87.06 ± 3.81 | 87.83 ± 3.06 | 0.048* |
LA | 29.82 ± 2.12 | 29.70 ± 2.18 | 29.75 ± 1.99 | 29.40 ± 2.84 | 30.33 ± 2.50 | 0.632 |
LV | 45.78 ± 2.27 | 46.00 ± 2.25 | 46.04 ± 2.21 | 45.85 ± 2.44 | 45.83 ± 2.32 | 0.425 |
RA | 33.98 ± 2.04 | 34.10 ± 2.32 | 34.14 ± 2.27 | 34.06 ± 2.56 | 33.17 ± 2.32 | 0.661 |
RV | 33.48 ± 2.24 | 33.70 ± 2.56 | 33.78 ± 2.56 | 33.50 ± 2.60 | 32.50 ± 2.07 | 0.469 |
PA | 19.83 ± 1.14 | 19.95 ± 1.42 | 19.93 ± 1.42 | 19.98 ± 1.48 | 20.33 ± 1.03 | 0.452 |
EF | 66.38 ± 4.28 | 67.16 ± 4.72 | 67.29 ± 4.82 | 66.87 ± 4.40 | 64.83 ± 3.31 | 0.165 |
SV | 65.92 ± 8.96 | 67.32 ± 9.72 | 67.57 ± 9.79 | 66.66 ± 9.42 | 64.17 ± 10.63 | 0.230 |
CO | 5.16 ± 1.14 | 5.60 ± 1.02 | 5.60 ± 1.03 | 5.65 ± 1.02 | 5.60 ± .663 | 0.001** |
Tricuspid regurgitation | 0.50(0.80) | 0.50(0.60) | 0.50(0.60) | 0.50(0.80) | 0.40(0.68) | 0.135 |
Cerebral hemodynamics | ||||||
Left side MCA | ||||||
Vm
| 67.46 ± 12.18 | 67.41 ± 11.74 | 66.91 ± 10.87 | 69.35 ± 14.87 | 68.50 ± 11.47 | 0.973 |
Vs
| 102.17 ± 14.94 | 101.41 ± 15.91 | 100.79 ± 15.15 | 103.92 ± 18.83 | 102.00 ± 15.82 | 0.693 |
Vd
| 48.0 ± 10.12 | 47.96 ± 9.10 | 47.51 ± 8.37 | 49.46 ± 11.67 | 51.00 ± 8.60 | 0.964 |
PI | 0.820 ± 0.169 | 0.800 ± 0.130 | 0.802 ± 0.127 | 0.799 ± 0.141 | 0.750 ± 0.130 | 0.260 |
RI | 0.531 ± 0.063 | 0.527 ± 0.0490 | 0.528 ± 0.048 | 0.526 ± 0.051 | 0.499 ± 0.057 | 0.532 |
Left side VA | ||||||
Vm
| 35.18 ± 5.57 | 36.38 ± 6.19 | 35.93 ± 5.66 | 37.63 ± 6.59 | 41.67 ± 14.40 | 0.103 |
Vs
| 51.28 ± 7.05 | 52.16 ± 8.49 | 51.75 ± 7.93 | 53.19 ± 9.20 | 57.83 ± 17.59 | 0.374 |
Vd
| 24.76 ± 4.76 | 25.96 ± 4.97 | 25.46 ± 4.49 | 27.35 ± 5.08 | 32.00 ± 11.93 | 0.045* |
PI | 0.765 ± 0.159 | 0.727 ± 0.153 | 0.738 ± 0.153 | 0.690 ± 0.150 | 0.640 ± 0.102 | 0.040* |
RI | 0.517 ± 0.065 | 0.500 ± 0.061 | 0.505 ± 0.058 | 0.482 ± 0.070 | 0.454 ± 0.053 | 0.025* |
Right side MCA | ||||||
Vm
| 63.51 ± 13.67 | 64.46 ± 11.45 | 64.24 ± 11.26 | 64.87 ± 11.57 | 68.67 ± 17.61 | 0.518 |
Vs
| 95.59 ± 17.61 | 96.24 ± 15.67 | 96.17 ± 15.55 | 96.13 ± 15.65 | 99.83 ± 22.29 | 0.740 |
Vd
| 45.11 ± 10.96 | 45.75 ± 8.73 | 45.53 ± 8.52 | 46.12 ± 8.95 | 50.67 ± 13.74 | 0.573 |
PI | 0.812 ± 0.144 | 0.792 ± 0.124 | 0.796 ± 0.121 | 0.780 ± 0.125 | 0.734 ± 0.190 | 0.191 |
RI | 0.530 ± 0.053 | 0.526 ± 0.051 | 0.527 ± 0.051 | 0.521 ± 0.047 | 0.493 ± 0.076 | 0.440 |
Right side VA | ||||||
Vm
| 37.27 ± 6.18 | 37.27 ± 6.02 | 37.00 ± 5.80 | 38.63 ± 6.89 | 35.17 ± 4.66 | 0.991 |
Vs
| 52.51 ± 7.69 | 52.26 ± 8.29 | 52.11 ± 8.09 | 53.42 ± 9.21 | 47.50 ± 6.06 | 0.800 |
Vd
| 26.72 ± 5.09 | 26.55 ± 4.74 | 26.26 ± 4.56 | 27.75 ± 5.33 | 26.33 ± 4.89 | 0.764 |
PI | 0.716 ± 0.208 | 0.693 ± 0.117 | 0.702 ± 0.117 | 0.669 ± .114 | 0.606 ± 0.056 | 0.202 |
RI | 0.500 ± 0.119 | 0.491 ± 0.053 | 0.494 ± 0.052 | 0.480 ± .053 | 0.448 ± 0.037 | 0.317 |
BA | ||||||
Vm
| 41.42 ± 8.64 | 44.18 ± 9.74 | 43.80 ± 9.42 | 46.33 ± 10.91 | 38.83 ± 8.06 | 0.017* |
Vs
| 65.46 ± 11.54 | 68.81 ± 14.84 | 68.60 ± 14.32 | 70.81 ± 16.13 | 59.17 ± 19.63 | 0.028* |
Vd
| 28.61 ± 7.46 | 30.47 ± 7.52 | 30.07 ± 7.31 | 32.29 ± 8.31 | 28.83 ± 6.27 | 0.042* |
PI | 0.914 ± 0.224 | 0.879 ± 0.193 | 0.890 ± 0.192 | 0.844 ± 0.183 | 0.760 ± .262 | 0.151 |
RI | 0.564 ± 0.078 | 0.554 ± 0.068 | 0.559 ± 0.066 | 0.542 ± 0.069 | 0.496 ± .086 | 0.292 |
Asymmetry of the bilateral VAs | ||||||
ΔVs
| −1.00 (8.00) | 0. 00 (9.00) | 0.00(9.00) | 0.00 (10.50) | 5.00 (28.5) | 0.126 |
ΔVd
| −3.00 (6.25) | −1.00 (6.00) | −1.00(7.00) | −1.00 (3.75) | 2.00 (18.5) | 0.010* |
ΔVm
| −2.50 (8.00) | −1.00 (6.00) | −1.00(6.00) | −1.00 (4.75) | 1.00 (23.75) | 0.046* |
AI% | −6.6(22.0) | −2.7 (18.0) | −2.9(18.4) | −2.1(13.8) | 2.8 (52.2) | 0.040* |
Conduction | ||||||
CVCi | 0.729 ± 0.145 | 0.724 ± 0.140 | 0.719 ± 0.135 | 0.737 ± 0.153 | 0.767 ± 0.191 | 0.758 |
Headache score | |||||
---|---|---|---|---|---|
r | p | r | p | ||
Demographic factors | PI | −0.152 | 0.004** | ||
Age | 0.178 | 0.001** | RI | −0.166 | 0.001** |
BMI | 0.075 | 0.155 | |||
Right side MCA | |||||
Systemic hemodynamics | Vm
| 0.078 | 0.136 | ||
SBP | 0.031 | 0.561 | Vs
| 0.055 | 0.297 |
DBP | 0.031 | 0.560 | Vd
| 0.086 | 0.103 |
ΔBP | 0.009 | 0.865 | PI | −0.099 | 0.059 |
MAP | 0.033 | 0.535 | RI | −0.087 | 0.097 |
HR | 0.143 | 0.006** | |||
SpO2
| −0.148 | 0.005** | Right side VA | ||
LA | −0.035 | 0.507 | Vm
| 0.039 | 0.455 |
LV | 0.027 | 0.610 | Vs
| <0.001 | 0.997 |
RA | 0.010 | 0.851 | Vd
| 0.036 | 0.499 |
RV | 0.001 | 0.992 | PI | −0.083 | 0.115 |
PA | 0.058 | 0.275 | RI | −0.065 | 0.215 |
EF | 0.045 | 0.390 | |||
SV | 0.035 | 0.506 | BA | ||
CO | 0.175 | 0.001** | Vm
| 0.119 | 0.023* |
Tricuspid regurgitation | 0.044 | 0.400 | Vs
| 0.077 | 0.141 |
Vd
| 0.121 | 0.021* | |||
Cerebral hemodynamics | PI | −0.105 | 0.045* | ||
Left side MCA | RI | −0.107 | 0.042* | ||
Vm
| 0.033 | 0.536 | |||
Vs
| 0.018 | 0.733 | Asymmetry of VAs | ||
Vd
| 0.039 | 0.454 | ΔVs
| 0.080 | 0.130 |
PI | −0.039 | 0.458 | ΔVd
| 0.137 | 0.009** |
RI | −0.050 | 0.345 | ΔVm
| 0.105 | 0.046* |
AI% | 0.106 | 0.043* | |||
Left side VA | |||||
Vm
| 0.120 | 0.022* | Conduction | ||
Vs
| 0.067 | 0.203 | CVCi | 0.019 | 0.716 |
Vd
| 0.157 | 0.003** |
Risk factors for HAH at 3700 m
Risk factors | β-coefficient | Odds ratio | (95% CI) | p value | ||
---|---|---|---|---|---|---|
Lower | Upper | |||||
Univariate logistic regression | ||||||
HR | 0.022 | 1.022 | 1.003 | 1.042 | 0.027* | |
SpO2
| −0.081 | 0.922 | 0.851 | 1.000 | 0.049* | |
CO | 0.422 | 1.524 | 1.195 | 1.944 | 0.001** | |
Left VA | Vd
| 0.052 | 1.053 | 1.001 | 1.108 | 0.046* |
PI | −1.562 | 0.210 | 0.047 | 0.944 | 0.042* | |
RI | −4.476 | 0.011 | 0.000 | 0.591 | 0.026* | |
BA | Vm
| 0.032 | 1.033 | 1.005 | 1.061 | 0.018* |
Vd
| 0.044 | 1.036 | 1.001 | 1.071 | 0.035* | |
Asymmetry of VAs | ΔVd
| 0.063 | 1.065 | 1.011 | 1.122 | 0.018* |
Adjusted logistic regression | ||||||
Model 1 | ||||||
HR | 0.025 | 1.025 | 1.005 | 1.045 | 0.012* | |
Model 2 | ||||||
HR | 0.023 | 1.023 | 1.003 | 1.044 | 0.026* | |
ΔVd
| 0.065 | 1.068 | 1.013 | 1.126 | 0.015* | |
Model3 | ||||||
CO | 0.417 | 1.517 | 1.189 | 1.937 | 0.001** | |
ΔVd
| 0.063 | 1.065 | 1.009 | 1.124 | 0.022* |
Associations between hemodynamic parameters and HAH in a subgroup of 129 subjects
Differences between HAH+ | Correlation with HAH intensities | ||||
---|---|---|---|---|---|
and HAH- groups | |||||
Headache Cases(n) | HAH-(31) | HAH+(98) | p value | r | p value |
Demographic factors | |||||
Age | 22.71 ± 3.21 | 23.13 ± 4.31 | 0.616 | 0.093 | 0.297 |
BMI | 21.41 ± 1.67 | 22.07 ± 2.52 | 0.175 | 0.153 | 0.084 |
Smoking(yes) | 7(22.5%) | 23(23.5%) | 0.919 | / | / |
Alcohol consumption(yes) | 21(67.7%) | 58(59.2%) | 0.396 | / | / |
Primary headache(yes) | 4(12.9%) | 23(23.5%) | 0.209 | / | / |
Systemic hemodynamic | |||||
SBP | 118.35 ± 10.81 | 117.32 ± 12.37 | 0.676 | 0.018 | 0.843 |
DBP | 74.00 ± 9.22 | 75.18 ± 11.31 | 0.598 | 0.059 | 0.509 |
ΔBP | 44.35 ± 6.47 | 42.13 ± 6.37 | 0.094 | −0.137 | 0.122 |
MAP | 88.78 ± 9.29 | 89.22 ± 11.28 | 0.843 | 0.061 | 0.490 |
HR | 63.32 ± 11.35 | 64.42 ± 10.10 | 0.607 | 0.008 | 0.930 |
SpO2 | 98.35 ± 1.02 | 98.30 ± 1.10 | 0.793 | 0.038 | 0.670 |
LA | 31.06 ± 1.55 | 30.87 ± 1.78 | 0.581 | −0.062 | 0.484 |
LV | 45.81 ± 2.14 | 46.71 ± 2.50 | 0.071 | 0.183 | 0.037* |
RA | 35.45 ± 1.98 | 35.78 ± 2.27 | 0.478 | 0.153 | 0.082 |
RV | 35.29 ± 1.85 | 35.55 ± 2.13 | 0.542 | 0.109 | 0.217 |
PA | 20.06 ± 1.46 | 20.30 ± 1.63 | 0.481 | 0.094 | 0.288 |
EF | 62.90 ± 5.98 | 63.10 ± 5.34 | 0.865 | 0.002 | 0.978 |
SV | 62.53 ± 16.31 | 66.55 ± 10.61 | 0.113 | 0.088 | 0.322 |
CO | 3.79 ± 1.01 | 4.33 ± 0.93 | 0.007** | 0.177 | 0.045* |
Tricuspid regurgitation | 0.50(1.00) | 0.45(1.00) | 0.372 | −0.030 | 0.739 |
Cerebral hemodynamic | |||||
Left side MCA | |||||
Vm
| 59.61 ± 8.24 | 63.24 ± 10.92 | 0.091 | 0.060 | 0.501 |
Vs
| 93.48 ± 12.13 | 97.00 ± 15.21 | 0.246 | 0.062 | 0.488 |
Vd
| 40.93 ± 6.20 | 43.62 ± 8.37 | 0.102 | 0.058 | 0.513 |
PI | 0.889 ± 0.154 | 0.852 ± 0.125 | 0.180 | −0.004 | 0.960 |
RI | 0.562 ± 0.051 | 0.550 ± 0.047 | 0.221 | −0.015 | 0.862 |
Left side VA | |||||
Vm
| 30.94 ± 5.25 | 33.23 ± 4.97 | 0.029* | 0.171 | 0.053 |
Vs
| 49.64 ± 7.11 | 50.82 ± 7.56 | 0.444 | 0.083 | 0.351 |
Vd
| 20.68 ± 4.17 | 22.26 ± 3.95 | 0.056 | 0.142 | 0.107 |
PI | 0.957 ± 0.193 | 0.873 ± 0.169 | 0.022* | −0.150 | 0.090 |
RI | 0.594 ± 0.075 | 0.561 ± 0.056 | 0.010* | −0.159 | 0.072 |
Right side MCA | |||||
Vm
| 54.29 ± 7.03 | 60.20 ± 10.37 | 0.004** | 0.155 | 0.080 |
Vs
| 85.64 ± 10.46 | 92.11 ± 14.53 | 0.023* | 0.125 | 0.157 |
Vd
| 37.19 ± 5.50 | 41.42 ± 7.60 | 0.005** | 0.114 | 0.200 |
PI | 0.888 ± 0.150 | 0.855 ± 0.146 | 0.276 | −0.078 | 0.380 |
RI | 0.574 ± 0.062 | 0.586 ± 0.053 | 0.592 | −0.093 | 0.292 |
Right side VA | |||||
Vm
| 32.77 ± 5.30 | 34.84 ± 4.40 | 0.032 | 0.126 | 0.155 |
Vs
| 49.38 ± 6.88 | 51.03 ± 6.33 | 0.220 | 0.073 | 0.411 |
Vd
| 22.09 ± 4.29 | 23.64 ± 3.95 | 0.065 | 0.110 | 0.216 |
PI | 0.849 ± 0.160 | 0.793 ± 0.156 | 0.086 | −0.141 | 0.110 |
RI | 0.555 ± 0.055 | 0.534 ± 0.061 | 0.081 | −0.134 | 0.130 |
BA | |||||
Vm
| 37.55 ± 7.36 | 40.50 ± 7.80 | 0.065 | 0.154 | 0.082 |
Vs
| 66.29 ± 13.65 | 68.53 ± 13.87 | 0.433 | 0.054 | 0.546 |
Vd
| 23.48 ± 5.08 | 25.69 ± 5.97 | 0.066 | 0.139 | 0.115 |
PI | 0.964 ± 0.210 | 0.885 ± 0.197 | 0.092 | −0.104 | 0.239 |
RI | 0.644 ± 0.055 | 0.621 ± .0714 | 0.108 | −0.074 | 0.404 |
Asymmetry of bilateral VAs | |||||
ΔVs
| 2.0 (15.0) | 0.0(9.25) | 0.795 | 0.042 | 0.634 |
ΔVd
| 0.0(6.0) | −2.0 (6.0) | 0.703 | 0.017 | 0.851 |
ΔVm
| −2.0 (8.0) | −1.0 (7.0) | 0.934 | 0.064 | 0.468 |
AI% | −0.061 (0.224) | −0.034(0.200) | 0.815 | 0.075 | 0.398 |
Conduction | |||||
CVCi | 0.648 ± 0.103 | 0.704 ± 0.145 | 0.048* | 0.097 | 0.275 |
Predictors | β-coefficient | Odds ratio | (95% CI) | P value | ||
---|---|---|---|---|---|---|
Lower | Upper | |||||
Univariate logistic regression | ||||||
CO | 0.650 | 1.915 | 1.158 | 3.168 | 0.011* | |
Left side VA | Vm
| 0.095 | 1.099 | 1.008 | 1.198 | 0.031* |
Right side MCA | Vm
| 0.071 | 1.073 | 1.021 | 1.127 | 0.005** |
Vs
| 0.039 | 1.040 | 1.005 | 1.076 | 0.026* | |
Vd
| 0.087 | 1.091 | 1.024 | 1.161 | 0.007** | |
Right side VA | Vm
| 0.099 | 1.104 | 1.007 | 1.211 | 0.035* |
Adjusted logistic regression | ||||||
Model 1 | ||||||
Left VA | Vm
| 0.094 | 1.099 | 1.007 | 1.199 | 0.035* |
CO | 0.478 | 1.613 | 1.031 | 2.522 | 0.036* | |
Model 2 | ||||||
Right side MCA | Vm
| 0.064 | 1.066 | 1.015 | 1.121 | 0.011* |
CO | 0.594 | 1.811 | 1.080 | 3.036 | 0.024* |