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Table 3 Loss of signal between 27 and 32 weeks of GA

From: A systematic review of cardiac time intervals utilising non-invasive fetal electrocardiogram in normal fetuses

Study Signal Acquisition Loss (%)
Abboud et al.,1990 [20] (n = 21) None reported
Taylor et al.,2003 [24] (n = 199) 12.4%
Chia El et al.,2005 [22] (n = 178) PR = 45.9%, QRS = 19.7%, QT = 27.9%
Taylor et al.,2005 [25] (n = 15) None reported
Hayashi R et al.,2009 [23] (n = 48) 40% for < 36 weeks
Arya et al.,2015 [21] (n = 50) 33%
Yilmaz et al.,2015 (n = 64) 15%
Wacker-Gussmann et al.,2017 [26] (n = 117) 44%