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  • Title: To study the changes in maternal hemodynamics with intravenous labetalol or nifedipine in acute severe hypertension.
    Author: Thakur M, Gainder S, Saha SC, Prakash M.
    Journal: Pregnancy Hypertens; 2020 Jul; 21():180-183. PubMed ID: 32570152.
    Abstract:
    OBJECTIVE: To study the maternal hemodynamic changes in acute severe hypertension after treatment with intravenous labetalol or oral nifedipine using color doppler ultrasound. STUDY DESIGN: We evaluated thirty pregnant women with gestational age between 28 and 40 weeks in acute severe hypertension (more than or equal to 160/105 mmHg) which were randomly allocated to receive either intravenous labetalol or oral nifedipine until blood pressure was lowered to less than or equal to 140/90 mmHg. Doppler vascular indices namely pulsatility index, resistance index, S/D ratio of bilateral uterine arteries and maternal renal artery were measured baseline at the time of acute severe hypertension and repeated after control of blood pressure, to assess the changes in maternal hemodynamics if any with labetalol or nifedipine. RESULTS: When evaluating right uterine artery Doppler parameters, a trend to increase in PI and RI was observed in those who received labetalol and nifedipine however the difference was not statistically significant. Whereas, while evaluating left uterine artery indices a trend to decrease PI was seen in nifedipine group but the difference was not statistically significant. On intergroup comparison there was no any significant change in any of uterine artery as well as renal artery indices in either group. CONCLUSION: The use of labetalol and nifedipine were not related to any significant changes in maternal Doppler, which is reassuring about the safety of these drugs when treating acute severe hypertension in pregnancy.
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