Low Stroke Volume Index in Healthy Young Men Is Associated with the Incidence of Acute Mountain Sickness after an Ascent by Airplane: A Case-Control Study
Table 2
Basic characteristics, physiological parameters, left ventricular size, and function in subjects in different tertiles of SVi.
Variables
Highest tertile
Middle tertile
Lowest tertile
()
()
()
Basic characteristics
Age (years)
22 (20-25)
22 (20-25)
23 (20-27)
Height (cm)
172 (168-175)
171 (169-174)
172 (168-175)
Weight (kg)
64 (59-68)
64 (59-68)
64 (59-70)
BMI (kg·cm-2)
21.4 (20.0-23.1)
21.8 (20.3-23.2)
21.5 (20.2-23.2)
BSA (m2)
1.71 (1.64-1.78)
1.71 (1.63-1.78)
1.71 (1.63-1.79)
Smoking (, %)
138 (70.4%)
132 (67.0%)
133 (67.9%)
Drinking (, %)
126 (64.3%)
128 (65.0%)
117 (60.0%)
Physiological parameters
HR (bpm)
#
SBP (mmHg)
118 (111-123)
118 (111-124)
117 (111-123)
DBP (mmHg)
78 (72-85)
78 (71-85)
78 (73-83)
MAP (mmHg)
91 (86-98)
91 (84-97)
91 (86-96)
SpO2 (%)
89.0 (87.3-91.0)
89.0 (87.0-91.0)
89.0 (87.0-91.0)
LV function
ESVi (ml/m2)
23.6 (20.7-27.2)
22.0 (18.4-25.9)
21.0 (18.1-24.5)
EDVi (ml/m2)
##
SVi (ml/m2)
46.0 (43.3-51.3)
37.0 (35.2-39.0)
27.7 (24.4-30.2)##
LVEF (%)
66.0 (64.0-70.0)
67.0 (64.1-70.3)
66.1 (64.0-69.0)
CI (l/min/m2)
##
Mitral Doppler flow
E-wave velocity (cm/s)
89.5 (78.0-99.0)
75.0 (68.0-83.5)
64.0 (58.0-72.8)##
A-wave velocity (cm/s)
53.0 (46.3-60.8)
54.0 (47.0-63.0)
56.0 (48.3-65.0)
E/A ratio
1.67 (1.37-1.98)
1.40 (1.14-1.74)
1.17 (0.96-1.39)##
Values are expressed as the or the median (interquartile range); abbreviations are the same as in Table 1. and vs. subjects in the highest SVi tertile. # and ## vs. subjects in the middle SVi tertile.
