Moms-to-be, take note: A history of kidney stones may cause pregnancy complications | fitness | Hindustan Times
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Moms-to-be, take note: A history of kidney stones may cause pregnancy complications

A new study says that among women with a history of kidney stones, there is an increased risk of preterm delivery, gestational diabetes, and preeclampsia.

fitness Updated: Nov 05, 2017 09:22 IST
The risk of developing a hypertensive complication in pregnancy was especially high in women who had kidney stones and were overweight or obese at the start of pregnancy.
The risk of developing a hypertensive complication in pregnancy was especially high in women who had kidney stones and were overweight or obese at the start of pregnancy. (Shutterstock)

A history of kidney stones may indicate an increased risk for metabolic and hypertensive complications during pregnancy, a recent study has suggested. Kidney stones have been linked with an increased risk of developing hypertension, diabetes, and metabolic syndrome. Previous studies have shown that a calcium buildup in the womb can trigger preterm births.

Jessica Tangren (Massachusetts General Hospital/Brigham and Women’s Hospital) and her colleagues looked to see if having kidney stones before pregnancy affects a woman’s risk of developing metabolic and hypertensive complications in pregnancy.

The study included women who delivered infants at the Massachusetts General Hospital from 2006 to 2016. Pregnancy outcomes in 174 women with documented stones were compared with 1,330 women without stones. Women with pre-existing chronic kidney disease, hypertension, and diabetes were excluded.

Maximum systolic blood pressure in pregnancy was increased in stone formers vs controls despite similar first trimester blood pressure. Gestational diabetes and gestational hypertension were more common in stone formers (18% vs. 6% and 19% vs. 13%). After adjustments, stones were associated with increased risk of preterm delivery, gestational diabetes, and preeclampsia.

Tangren noted that the risk of developing a hypertensive complication in pregnancy was especially high in women who had kidney stones and were overweight or obese at the start of pregnancy. She added that they did not identify increased risk for foetal complications such as intrauterine growth restriction or need for neonatal intensive care amongst stone formers.

Tangren continued that due to the increasing incidence of stone disease in young women, further research aimed at identifying modifiable risk factors and novel treatment and prevention strategies should be encouraged. The study will be presented at ASN Kidney Week 2017 October 31-November 5 at the Ernest N. Morial Convention Center in New Orleans, LA.

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