Predicting fluid responsiveness in spontaneously breathing parturients undergoing caesarean section via carotid artery blood flow and velocity time integral measured by carotid ultrasound: a prospective cohort study

Table 2 Hemodynamic variables before and after fluid challenge

	Responders group (n = 31)		Non-responders group (n = 41)		P value	P value
	Before	After	Before	After	Before	After
CABF (ml/min)	161.2 ± 50.4	317.3 ± 105.1*	236.4 ± 72.9#	321.7 ± 79.4*	0.0002	0.843
VTI (cm/s)	9.0 ± 2.9	15.8 ± 4.8*	13.1 ± 3.9#	16.4 ± 3.7*	0.0003	0.587
SVI (ml m^− 2)	61.7 ± 11.2	84.5 ± 16.0*	68.3 ± 13.2#	79.5 ± 16.4*	0.018	0.196
HR (beat min-1)	87.5 ± 14.3	88.2 ± 13.5	84.4 ± 11.7	83.2 ± 11.6	0.318	0.096
MAP (mmHg)	83.7 ± 7.5	89.3 ± 8.6	85.3 ± 14.9	90.8 ± 8.4	0.573	0.473

The data are reported as mean ± SD
*p < 0.05 compared with before fluid challenge. #p < 0.05 compared with Responders group
SVI: stroke volume index; VTI: carotid artery velocity time integral; CABF: carotid artery blood flow
MAP: Mean arterial pressure; HR: Heart rate

ISSN: 1471-2393