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Hypertension during pregnancy increases risk of end-stage renal disease

Date:
January 22, 2013
Source:
Canadian Medical Association Journal
Summary:
Women with hypertensive disorders in pregnancy are at higher risk of chronic kidney disease and end-stage renal disease compared with women without the disorders, according to a new study.

Women with hypertensive disorders in pregnancy are at higher risk of chronic kidney disease and end-stage renal disease compared with women without the disorders, according to a study in CMAJ (Canadian Medical Association Journal).

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"We found that women with hypertensive disorders during pregnancy were at higher risk of end-stage renal disease than women without complicated pregnancies," writes Dr. I-Kuan Wang, Division of Nephrology, China Medical University Hospital, Taichung, Taiwan, with coauthors.

Hypertensive disorders such as gestational hypertension and preeclampsia in pregnancy can have a major impact on the health of the mother and baby and are risk factors for death. An estimated 5% to 10% of pregnancies are affected by hypertensive disorders. Kidney function can be affected.

Researchers looked at data on 26 651 women in Taiwan with hypertensive disorders in their first pregnancy to determine whether there was an increased risk of end-stage renal disease compared with a group of 213 397 women without the disorders. The women were 19 to 40 years old and did not have a history of hypertension, diabetes or kidney disease.

Taiwan has one of the highest rates of end-stage renal disease in the world.

The incidence of chronic kidney disease was almost 11-fold higher in the group with hypertensive disorders in pregnancy compared with the women without the disorders. End-stage renal disease was 14-fold higher in the cohort with hypertensive disorders. The risk for women with preeclampsia was higher than for those with only gestational hypertension.

"We found an increased risk of subsequent end-stage renal disease among Taiwanese women who had experienced hypertensive disorders during pregnancy, including preeclampsia or eclampsia and gestational hypertension," write the authors. "We also found that women with preeclampsia or eclampsia were at higher risk of end-stage renal disease than those who had gestational hypertension only."

There is little data on the link between hypertensive disorders during pregnancy and the risk of end-stage renal disease. This study is consistent with a Norwegian study that found a similar link between these disorders and later kidney disease.

"Close surveillance for microalbuminuria, blood pressure and diabetes should be considered for women with a history of hypertensive disorders during pregnancy. Preventive strategies, such as pharmacologic or lifestyle interventions, should also be considered for women at high risk of end-stage renal disease," conclude the authors.

"This study by Wang and colleagues is timely because it shows the importance of hypertension during pregnancy as a marker for future chronic kidney disease, cardiovascular disease and diabetes," write Dr. Julia Spaan from Maastricht University Medical Center, the Netherlands, and Prof. Dr. Mark Brown from the University of New South Wales, Australia, in a related commentary. "It also highlights one of the current pitfalls of clinical practice: although these women have great attention paid to their high blood pressure during pregnancy, there is no structured follow-up of blood pressure or cardiovascular and renal risk factors after pregnancy. Better surveillance after pregnancy should help prevent not only chronic kidney disease but also cardiovascular disease.


Story Source:

The above story is based on materials provided by Canadian Medical Association Journal. Note: Materials may be edited for content and length.


Journal Reference:

  1. I.-K. Wang, C.-H. Muo, Y.-C. Chang, J.-C. Liang, C.-T. Chang, S.-Y. Lin, T.-H. Yen, F.-R. Chuang, P.-C. Chen, C.-C. Huang, C.-P. Wen, F.-C. Sung, D. E. Morisky. Association between hypertensive disorders during pregnancy and end-stage renal disease: a population-based study. Canadian Medical Association Journal, 2013; DOI: 10.1503/cmaj.120230

Cite This Page:

Canadian Medical Association Journal. "Hypertension during pregnancy increases risk of end-stage renal disease." ScienceDaily. ScienceDaily, 22 January 2013. <www.sciencedaily.com/releases/2013/01/130122102106.htm>.
Canadian Medical Association Journal. (2013, January 22). Hypertension during pregnancy increases risk of end-stage renal disease. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2013/01/130122102106.htm
Canadian Medical Association Journal. "Hypertension during pregnancy increases risk of end-stage renal disease." ScienceDaily. www.sciencedaily.com/releases/2013/01/130122102106.htm (accessed November 28, 2014).

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