Fig 1.
A normalized and filtered RR series (black curve, in normalized unit).
Areas A1, A2, A3, and A4 are computed between the lower and upper limits (area in grey). The lowest area (AUCmin) is then selected (A4) and Fetal Stress Index is computed.
Table 1.
Spectral analysis (HF, LF and normalized HF), RMSSD and fetal stress index values before and after direct intravenous administration of 2.5 mg atropine.
The results are presented as median values (1st–3rd quartiles). A Wilcoxon test was used for analysis. Statistical significance was set as p <0.05.
Fig 2.
High frequency, low frequency, root mean square of the successive differences and fetal stress index before and after administration of 2.5 mg atropine.
* → p<0.05 versus before atropine injection.
Table 2.
Spectral analysis (HF, LF and normalized HF), RMSSD and fetal stress index values before and after direct intravenous administration of propranolol.
The results are presented as median values (1st–3rd quartiles). A Wilcoxon test was used for analysis. Statistical significance was set as p <0.05.
Table 3.
Blood gases before and after injection of atropine and propranolol, respectively.
The results are presented as median values (1st–3rd quartiles).