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Characteristics of Ophthalmic Artery in Pregnancy-induced Hypertension and Its Relationship with the Total Peripheral Vascular Resistance Index with Doppler Ultrasonography

Purpose To investigate the characteristics of ophthalmic artery (OA) in severe pregnancy-induced hypertension (PIH) patients and the correlation with the total peripheral vascular resistance index (TPVRI) by Doppler ultrasonography. Methods We measured the OA flow parameters in 35 PIH and 26 normal pregnant (NP) women.The spectrum and diameter of aorta were recorded to calculate TPVRI. Results The B/A ratio of OA were significantly increased compared with NP group (0 74±0 13 vs 0 47±0 15, P 0 01) which has excellent correlation with the TPVRI and mean arterial pressure ( r =0 66, P 0 001, r =0 63, P 0 001).While the PIH group's B peak velocity was significantly higher and RI was lower than NP group ones. Conclusion The most significant changes of the OA hemodynamics were the decreased RI,increased B velocity and the ratio B/A that corresponded with the increasing of TPVRI.Changes in B/A ratio may be indicative of similar changes in TPVRI. [