Table 5.
Difference between the ipsilateral and contralateral ΔoxyHb response, following median nerve stimulation for 1.8, 4.8 or 7.8 s, in newborn lambs and fetal sheep (values are means ± SEM; individual values are shown where n < 3 available)
| Duration of stimulation | 1.8 sa | 4.8 s | 7.8 s | |||
|---|---|---|---|---|---|---|
| Newborn lamb | ||||||
| Contralateral ΔoxyHb response pattern | Negative (n = 2) | Positive (n = 3) | Negative (n = 5) | Positive (n = 3) | Negative (n = 3) | Positive (n = 5) |
| Ipsilateral − contralateral ΔoxyHb (μm cm) | 1.2 ± 1.1 (all patterns) | 1.9 ± 1.2 (all patterns) | 1.6 ± 1.3 (all patterns) | |||
| 1.1, 2.0 | 0.9 ± 1.3 | 2.4 ± 1.9 | 1.1 ± 0.6 | 1.4 ± 0.5 | 1.7 ± 2.2 | |
| Fetal sheep (Nakamura et al. 2017) | ||||||
| Contralateral ΔoxyHb response pattern | Positive (n = 8) | Negative + Biphasic (n = 6) | Positive (n = 2) | Negative + Biphasic (n = 7) | Positive (n = 3) | |
| Ipsilateral − contralateral ΔoxyHb (μm cm) | 1.6 ± 0.7 | 6.9 ± 2.6 (all patterns) | 15.1 ± 4.7 (all patterns)* | |||
| 8.2 ± 3.3 | 1.5, 4.5 | 22.6 ± 3.9† | 0.1 ± 2.3 | |||
aWith 1.8 s stimulation, no response was obtained in 3 out of 8 newborn lambs. * P < 0.05 vs. the 7.8 s group (all patterns) in newborn lambs. † P < 0.05 vs. Negative pattern of the 7.8 s stimulation in newborn lambs. ΔoxyHb, changes in oxyhaemoglobin.