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Retrospective Study
©Author(s) (or their employer(s)) 2026.
World J Gastrointest Surg. Feb 27, 2026; 18(2): 114434
Published online Feb 27, 2026. doi: 10.4240/wjgs.v18.i2.114434
Table 2 Comparison of heart rate variability time-domain parameters between the two patient groups (mean ± SD, millisecond)
GroupPatientsSDNN
RMSSD
Before
After
Before
After
Control4062.85 ± 12.3154.20 ± 13.7238.16 ± 9.6231.46 ± 9.21
Observation 4063.26 ± 11.5468.52 ± 10.3638.76 ± 9.1642.65 ± 8.92
t0.1545.2680.2865.520
P value0.8780.0000.7760.000


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