Study | N | Early pre– term (≤ 32 weeks) | Late pre– term (32–37 weeks) | Term (≥ 37 weeks) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(ms) | Â | QT | CI | QRS | CI | PR | CI | QT | CI | QRS | CI | PR | CI | QT | CI | QRS | CI | PR | CI |
Abboud et al. (1990) [20] | 21 |  |  |  |  |  |  | 264 | 224–302 | 46.3 | 44–49 | 103 | 88–117 | 245 | 225–265 | 46.4 | 43–50 | 115.8 | 91–141 |
Taylor et al. (2003) [24] | 199 | 251 | 289–304 | 47 | 61–65 | 102 | 110–114 |  |  |  |  |  |  | 259 | 306–321 | 55 | 70–75 | 105 | 133–142 |
Chia et al. (2005) [22] | 374 | 228.4 | 219–239 | 49.4 | 45–54 | 105.6 | 99–118 | 235 | 230–240 | 51 | 48–52 | 110 | 107–113 | 243 | 239–245 | 63 | 51–55 | 110 | 108–112 |
Taylor et al. (2005) [25] | 15 | 255 | Â | 62 | Â | 92.5 | Â | Â | Â | Â | Â | Â | Â | 256 | Â | 56 | Â | 103.8 | Â |
Hayashi R et al. (2009) [23] | 48 | Â | Â | Â | Â | Â | Â | Â | Â | 57 | Â | Â | Â | Â | Â | 52 | Â | Â | Â |
Arya et al. (2015) [21] | 13 | Â | Â | 96 | Â | 132.8 | Â | Â | Â | 85 | Â | 128 | Â | Â | Â | 76 | Â | 135 | Â |
Yilmaz et al. (2015) | 64 | 235.5 |  | 54 | 47–57 | 97.5 | 91–105 | 233 |  | 56 | 49–63 | 109 | 89–110 |  |  |  |  |  |  |
Wacker Gussmann et al. (2017) [26] | 117 |  |  |  |  |  |  | 253 | 247–259 | 50.3 | 49–51 | 107.3 | 103–110 | 250 | 246–254 | 53 | 52–54 | 108 | 104–112 |