Sphenopalatine ganglion block with or without greater occipital nerve block for treatment of obstetric post-dural puncture headache after spinal anesthesia: randomized controlled trial

Ain-Shams Journal of Anesthesiology

Table 3 TCD parameters at different timings compared to baseline reading in each group

Variables	Baseline	At 1 h	At 6 h	At 24 h	P value
Group C (n = 21)
MV (cm/s)	82.52 ± 4.29	82.54 ± 3.87	81.83 ± 3.76	80.61 ± 3.31	0.213
PI	0.62 ± 0.05	0.66 ± 0.04^b	0.67 ± 0.04^b	0.69 ± 0.03^b	0.004
Group S (n = 21)
MV (cm/s)	81.58 ± 4.69	69.86 ± 6.28^a	67.37 ± 6.23^a	65.15 ± 5.65^a	< 0.001
PI	0.63 ± 0.04	0.69 ± 0.04^b	0.72 ± 0.04^b	0.72 ± 0.04^b	< 0.001
Group NAG (n = 21)
MV (cm/s)	82.52 ± 4.68	69.16 ± 5.53^a	66.50 ± 4.75^a	64.30 ± 4.55^a	< 0.001
PI	0.64 ± 0.04	0.69 ± 0.04^b	0.72 ± 0.04^b	0.71 ± 0.05^b	< 0.001

Data were expressed as mean ± SD. Repeated measure ANOVA test
TCD transcranial Doppler, Group C control group, Group S bilateral sphenopalatine ganglion block group, Group NAG combined nerve and ganglion block, n total number of subjects in each group, MV mean velocity, PI Pulsatility Index, baseline reading reading at the time of enrollment
^aMV was significantly decreased in the S and NAG groups compared to the baseline reading
^bPI was significantly increased in the three groups compared to the baseline reading