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Computing, Robotics, and Imaging for the Surgical Platform

Journal of Computational Surgery Cover Image

Table 3 Results from HRV analysis

From: Impact of cardiac surgery on the autonomic cardiovascular function

Parameter Group preOP 1d postOP 7d postOP p value
   mean ± sd p value mean ± sd p value mean ± sd p value  
meanNN MVR 879±155 n.s. 728±78.9 n.s. 747±78.7 n.s. <0.001
(in ms) AVR 902±138   739±117   790±145   <0.001
  TAVI 883±139   827±161   817±122   n.s.
sdNN MVR 36.5±23.8 n.s. 14.3±7.07 <0.01 15.1±9.80 <0.001 <0.001
(in ms) AVR 31.9±13.6   23.1±10.2   25.9±21.5   <0.01
  TAVI 28.3±10.9   32.5±13.7   28.4±13.5   n.s.
shannon MVR 1.83±0.52 n.s. 1.03±0.35 <0.001 1.06±0.42 <0.001 <0.001
(unitless) AVR 1.78±0.38   1.41±0.43   1.42±0.55   <0.001
  TAVI 1.63±0.36   1.77±0.34   1.65±0.38   n.s.
FORBWORD MVR 31.7±13.0 n.s. 49.0±6.07 <0.001 47.5±10.6 <0.01 <0.001
(unitless) AVR 34.4±10.9   36.7±13.7   41.9±11.1   <0.01
  TAVI 36.8±9.72   27.4±13.3   33.1±17.4   n.s.
POLVAR10 MVR 0.11±0.24 n.s. 0.43±0.33 <0.001 0.43±0.27 <0.001 <0.001
(unitless) AVR 0.12±0.19   0.24±0.27   0.24±0.32   <0.05
  TAVI 0.07±0.10   0.04±0.05   0.08±0.12   n.s.
PHF/P MVR 0.14±0.08 n.s. 0.17±0.14 n.s. 0.14±0.11 n.s. n.s.
(unitless) AVR 0.13±0.09   0.20±0.17   0.16±0.15   n.s.
  TAVI 0.20±0.12   0.23±0.16   0.23±0.17   n.s.
PLF/P MVR 0.29±0.12 n.s. 0.16±0.10 n.s. 0.13±0.09 n.s. <0.001
(in ms) AVR 0.25±0.10   0.20±0.10   0.19±0.10   <0.05
  TAVI 0.25±0.13   0.16±0.08   0.22±0.14   n.s.
PLF/PHF MVR 2.83±1.97 <0.05 1.70±2.26 n.s. 2.14±3.28 n.s. <0.01
(unitless) AVR 3.00±2.19   1.97±2.54   2.90±2.58   <0.05
  TAVI 1.93±1.72   1.00±0.62   1.60±1.30   n.s.
  1. Mean values and standard deviations of HRV parameters. Given p values are results from Kruskal-Wallis tests. The first three p values target transversal comparisons, and the last p value (last column) shows the results of the longitudinal, i.e., within surgical procedure, analysis. Results of transversal post hoc tests for selected parameters are shown in Figure 4. Results of longitudinal post hoc tests are given in Table 4.