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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%