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Doctors' Tests Often Miss High Blood Pressure In Kids With Kidney Disease

Date:
November 12, 2009
Source:
American Society of Nephrology
Summary:
Many children with chronic kidney disease (CKD) who show normal blood pressure readings at the doctor's office have high blood pressure when tested at home, according to a new study. The findings indicate that many CKD children are not appropriately treated for hypertension, which puts them at serious risk of developing heart disease.

Many children with chronic kidney disease (CKD) who show normal blood pressure readings at the doctor's office have high blood pressure when tested at home, according to a study appearing in an upcoming issue of the Journal of the American Society Nephrology (JASN). The findings indicate that many CKD children are not appropriately treated for hypertension, which puts them at serious risk of developing heart disease.

Hypertension increases the risk of developing an enlarged heart, or left ventricular hypertrophy (LVH), which frequently leads to progressive heart disease. Children with CKD who have hypertension often develop LVH, yet many children with CKD who have normal blood pressure when taken in the doctor's office also develop the condition. Mark Mitsnefes, MD (Cincinnati Children's Hospital Medical Center), and his colleagues wondered if these children actually have elevated blood pressure not detected in the clinic.

The researchers analyzed information from approximately 200 children in the Chronic Kidney Disease in Children (CKiD) study, a prospective observational study of children with mild to moderate CKD. Children were asked to wear devices that collect blood pressure readings periodically throughout the day and night. Dr. Mitsnefes and his team found that monitoring blood pressure in this way revealed that one third of children with CKD who had normal blood pressure readings in the doctor's office actually had elevated blood pressure (called masked hypertension). Some of these children were not taking any blood pressure medications, meaning they had unrecognized hypertension, while some were being treated with low doses of antihypertensive medications, meaning they had undertreated hypertension. More importantly, children with masked hypertension were four times as likely to have LVH as children with normal blood pressure.

These results support the case for early heart tests and ongoing blood pressure readings outside the clinic as a part of standard care to screen for LVH and hypertension in children with mild to moderate CKD, said Dr. Mitsnefes. "We hope that by recognizing and treating masked hypertension we might reverse LVH and delay or prevent the development of more serious cardiac complications in these children."

Authors include Joseph Flynn, MD, MS (Seattle Children's Hospital) Silvia Cohn, MS (Johns Hopkins University School of Public Health), Joshua Samuels, MD (University of Texas), Thomas Blydt-Hansen, MD (Health Sciences Center, Winnipeg, Canada,) Jeffrey Saland, MD (The Mount Sinai School of Medicine), Thomas Kimball, MD (Cincinnati Children's Hospital Medical Center) Susan Furth, MD, PhD (Johns Hopkins University School of Medicine), and Bradley Warady, MD (University of Missouri-Kansas City School of Medicine), for the CKiD Study Group.


Story Source:

The above story is based on materials provided by American Society of Nephrology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Masked Hypertension Associates with Left Ventricular Hypertrophy in Children with CKD. Journal of the American Society Nephrology, November 12, 2009 DOI: 10.1681/ASN.2009060609

Cite This Page:

American Society of Nephrology. "Doctors' Tests Often Miss High Blood Pressure In Kids With Kidney Disease." ScienceDaily. ScienceDaily, 12 November 2009. <www.sciencedaily.com/releases/2009/11/091112171406.htm>.
American Society of Nephrology. (2009, November 12). Doctors' Tests Often Miss High Blood Pressure In Kids With Kidney Disease. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2009/11/091112171406.htm
American Society of Nephrology. "Doctors' Tests Often Miss High Blood Pressure In Kids With Kidney Disease." ScienceDaily. www.sciencedaily.com/releases/2009/11/091112171406.htm (accessed September 23, 2014).

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