Table 1:

Characteristics of included randomized trials on intrapartum fetal surveillance

StudyCountrySettingsSample sizeInterventionComparisonGestation age, wk
Amer-Wahlin et al., 200125Sweden3 labour wards4966STAN-CTG-FBSCTG-FBS> 36
Belfort et al., 201526US16 university maternity units11 108STAN-CTGCTG> 36
Bloom et al., 200627US14 university maternity units5341CTG-FPOCTG≥ 36
Brocklehurst et al., 201728UK24 maternity units47 062cCTG-FBSCTG-FBS≥ 35
Caliskan et al., 200929TurkeyTertiary referral centre230CTG-FPOCTG≥ 34
East et al., 200630Australia4 maternity hospitals601FPO-CTG-FBSCTG-FBS≥ 26
East et al., 201631AustraliaTertiary referral centre123CTG-lactateCTGFull term
Garite et al., 200032US9 maternity hospitals1010FPO-CTG-FBSCTG-FBS≥ 36
Haverkamp et al., 197633USNR483CTGIA≥ 35
Haverkamp et al., 197934USGeneral hospital690CTGCTG-FBS> 34
Haverkamp et al., 197934USGeneral hospital690CTGIA> 34
Herbst et al., 199435SwedenTertiary referral centre4044IACTG-FBS> 33
Ignatov et al., 201636BulgariaTertiary referral centre720cCTGCTG-FBS≥ 37
Kelso et al., 197837UKTertiary referral centre504CTGIANR
Klauser et al., 200538USHospital for women & infants360CTG-FPOCTG≥ 28
Kuhnert et al., 200439GermanyWomen’s hospitals. (The German Multicenter Study Group)146CTG-FBS-FPOCTG-FBS≥ 36
Macdonald et al., 198540UKMaternity hospital12 964CTG-FBSIA≥ 28
Madaan et al., 200641IndiaUniversity hospital100CTGIA≥ 37
Mdoe et al., 201842TanzaniaReferral hospital2652CTGIANR
Neldam et al., 198643DenmarkLabour ward in tertiary university hospital1061CTG-FBSIA≥ 36
Nunes et al., 201744UK5 hospitals, 3 tertiary care units and 2 district general hospitals7730cCTG-FBSCTG-FBS≥ 36
Ojala et al., 200645FinlandLabour ward in tertiary university hospital1483STAN-CTG-FBSCTG-FBS≥ 36
Puertas et al., 201846SpainUniversity hospital237STAN-CTG-FBSCTG-FBS291–294 d gestation
Renou et al., 197647AustraliaFetal intensive care unit440CTG-FBSIANR
Strachan et al., 200048UK, Hong Kong, Netherlands, Singapore5 teaching hospitals1038STAN-CTG-FBSCTG-FBSNR
Valverde et al., 201149SpainUniversity hospital180STAN-CTG-FBSFPO-CTG-FBSFull term
van Wijngaarden et al., 199650UK, Hong Kong3 teaching hospitals214STAN-CTG-FBSCTG-FBS> 27
Vayssiere et al., 200751France2 maternity wards799STAN-CTG-FBSCTG-FBS≥ 36
Vintzileos et al., 199352Greece2 university hospitals1428CTGIA≥ 26
Westerhuis et al., 201053Netherlands3 academic and 6 nonacademic teaching hospitals5681STAN-CTG-FBSCTG-FBS> 36
Westgate et al. 199354UKDistric general hospital2434STAN-CTG-FBSCTG-FBS> 34
Westgren et al. 199855SwedenUniversity hospital341CTG-lactateCTG-FBSNR
Wiberg-Itzel et al. 200856Sweden10 labour ward departments2992CTG-lactateCTG-FBS≥ 34
Wood et al. 198157AustraliaMaternity hospital and medical centre989CTG-FBSIANR
  • Note: cCTG = computer-aided cardiotocography, cCTG-FBS = computer-aided cardiotocography with fetal scalp blood pH sampling, CTG = cardiotocography, CTG-FBS = cardiotocography with fetal scalp blood pH sampling, CTG-lactate = cardiotocography with fetal scalp blood lactate, FPO-CTG = cardiotocography with fetal pulse oximetry, FPO-CTG-FBS = cardiotocography with fetal pulse oximetry and fetal blood pH sampling, IA = intermittent auscultation, NR = not reported, STAN-CTG = cardiotocograpy with fetal heart electrocardiogram, STAN-CTG-FBS = cardiotocography with fetal heart electrocardiogram and fetal scalp blood pH sampling.