Table 10 Pearson correlation coefficients (r) between the day of pregnancy and the Doppler parameters in the arterial vessels of the placentomes and umbilical cord in sheep (n = 16)
Location of the vessel | Parameters | Correlation coefficients | Significance level |
|---|---|---|---|
Umbilical cord | PSV | 0.64 | P < 0.01 |
EDV | 0.74 | P < 0.01 | |
PSV/EDV | −0.04 | NS | |
RI | −0.72 | P < 0.01 | |
PI | −0.82 | P < 0.01 | |
Cotyledon | PSV | 0.66 | P < 0.01 |
EDV | 0.90 | P < 0.01 | |
PSV/EDV | −0.04 | NS | |
RI | −0.90 | P < 0.01 | |
PI | −0.68 | P < 0.01 | |
Caruncle | PSV | 0.56 | P < 0.01 |
EDV | 0.60 | P < 0.01 | |
PSV/EDV | 0.21 | NS | |
RI | −0.57 | P < 0.01 | |
PI | −0.48 | P < 0.01 |