Research Article

Evaluation of the Acceleration and Deceleration Phase-Rectified Slope to Detect and Improve IUGR Clinical Management

Table 2

Results of comparison between Healthy and IUGR fetuses.

HealthyIUGR value
(mean ± std)(mean ± std)

Time parameters
STV (ms)
 <34th 6,25 ± 1,104,13 ± 1,340,0005
 34th–37th6,48 ± 1,774,46 ± 1,527,38e5
 >37th6,39 ± 1,254,38 ± 1,390,02
LTI (ms)
 <34th 30,04 ± 7,9617,97 ± 5,272,52e6
 34th–37th27,32 ± 6,2221,98 ± 2,880,0003
 >37th28,53 ± 7,0319,25 ± 1,960,03
Nonlinear parameters
ApEn
 <34th 1,25 ± 0,181,24 ± 0,130,85
 34th–37th1,33 ± 0,121,17 ± 0,070,007
 >37th1,45 ± 0,101,29 ± 0,070,02
LZC
 <34th 1,04 ± 0,010,92 ± 0,110,004
 34th–37th0,99 ± 0,100,97 ± 0,060,39
 >37th1,01 ± 0,061,00 ± 0,010,55
SampEn
 <34th 1,27 ± 0,211,10 ± 0,200,03
 34th–37th1,32 ± 0,201,17 ± 0,110,002
 >37th1,31 ± 0,171,12 ± 0,060,05
PRSA parameters
APRS (bpm)
 <34th 0,18 ± 0,030,12 ± 0,050,0002
 34th–37th0,18 ± 0,050,13 ± 0,045,70e5
 >37th0,17 ± 0,030,10 ± 0,030,001
DPRS (bpm)
 <34th −0,18 ± 0,04−0,11 ± 0,044,20e5
 34th–37th−0,19 ± 0,05−0,13 ± 0,040,0009
 >37th−0,19 ± 0,04−0,10 ± 0,020,002