Heart Rate Variability and Cardiovascular Reflex Tests for Assessment of Autonomic Functions in Preeclampsia

Table 2

Cardiovascular reflex tests in different groups.

Test	Parameters	Preeclamptic females; (n=40)	Normotensive; pregnant females; (n=40)	Normal non pregnant females; (n=40)
Test for sympathetic component
Lying to standing test	Average fall in systolic blood pressure (mmHg)	3.00 ± 3.96	5.1 ± 6.41	1.75 ± 2.78
Tests for parasympathetic component
Lying to standing test	30:15 ratio	1.13 ± 0.11	1.22 ± 0.11	1.40 ± 0.17
Deep breathing test	Change in heart rate (bpm)	13.48 ± 6.12	22.6 ± 8.18	19.82 ± 5.97
	Expiration:Inspiration ratio	1.19 ± 0.10	1.34 ± 0.12	1.37 ± 0.13

Values are expressed as mean ± standard deviation; n, number of subjects; 30:15 ratio, immediate heart rate response to standing; p < 0.05 versus normal non pregnant females; < 0.05 versus normotensive pregnant females.