Transcutaneous electrostimulation for suspected placental insufficiency (diagnosed by Doppler studies)

. 1996 Apr 22;1996(1):CD000079. doi: 10.1002/14651858.CD000079

Study	Reason for exclusion
Enzelsberger 1991	(1) Method of allocation quasi‐random (odd‐even calendar dates).   (2) Out of 72 participants, 56 had full details at the time of discharge so the data are given for these 56 participants (16 participants excluded).   (3) Data available are in unsuitable form for analysis. The ratio of type 1 (mean + 1 SD): type 2 (mean + 2 SD): type 3 (mean + 3 SD) Doppler A/B ratios in the study group improved after therapy for both the umbilical artery measurements (16:11:6 versus 2:18:13 before therapy) and the fetal aorta measurements (20:10:3 versus 14:14:5). The study group had greater birthweights (2605 versus 2300 gm, P < 0.05) and placental weights (501.2 versus 389.5 gm, P < 0.05). There were no significant differences between the groups with respect to enrolment to delivery interval (3.9 versus 3.2 weeks), head circumferences (33.1 versus 32.2 cm), operative delivery (8/33 versus 6/23) or Apgar scores.
Enzelsberger 1993	This study, presented 2 years after the publication of a similar trial by the same authors is available only as a Congress Abstract and very few data are given. Furthermore, it appears as if it is a continuation of the published trial Enzelsberger 1991 with 10 more participants in each arm so the limitations of the previous trial are likely to be applicable here as well (see report for the Enzelsberger 1991 trial).

Study

Reason for exclusion

Enzelsberger 1991

(1) Method of allocation quasi‐random (odd‐even calendar dates).   (2) Out of 72 participants, 56 had full details at the time of discharge so the data are given for these 56 participants (16 participants excluded).   (3) Data available are in unsuitable form for analysis.
The ratio of type 1 (mean + 1 SD): type 2 (mean + 2 SD): type 3 (mean + 3 SD) Doppler A/B ratios in the study group improved after therapy for both the umbilical artery measurements (16:11:6 versus 2:18:13 before therapy) and the fetal aorta measurements (20:10:3 versus 14:14:5). The study group had greater birthweights (2605 versus 2300 gm, P < 0.05) and placental weights (501.2 versus 389.5 gm, P < 0.05). There were no significant differences between the groups with respect to enrolment to delivery interval (3.9 versus 3.2 weeks), head circumferences (33.1 versus 32.2 cm), operative delivery (8/33 versus 6/23) or Apgar scores.

Enzelsberger 1993

This study, presented 2 years after the publication of a similar trial by the same authors is available only as a Congress Abstract and very few data are given. Furthermore, it appears as if it is a continuation of the published trial Enzelsberger 1991 with 10 more participants in each arm so the limitations of the previous trial are likely to be applicable here as well (see report for the Enzelsberger 1991 trial).

SD: standard deviation