Urine NT-proBNP Levels and Echocardiographic Findings in Very Low Birth Weight (VLBW) Infants

April 9, 2010 updated by: Charite University, Berlin, Germany
The aim of the study is to evaluate urine NT-proBNP levels and new Echocardiographic Findings in VLBW infants. The investigators hypothesize that high urine NT-proBNP concentrations are associated with a hemodynamically significant ductus arteriosus. The investigators also hypothesized that new echocardiographic parameters such as isovolumic relaxation time (IVRT)is useful for the prediction of ductus intervention.

Study Overview

Status

Completed

Conditions

Detailed Description

Urine samples were collected within 24 to 48 hours of age, on day 7, on day 14 and on day 28 of life. The samples were spun and the platelet-free urine was stored at -80°C until NT-proBNP analysis. The NT-proBNP assay was performed with an automated immunoassay (Roche Diagnostics). Color Doppler and tissue Doppler echocardiography was determined at the same time as the urine collection. New echo parameters such as IVRT, tissue velocity, strain and strain rate were measured and compared with the standard parameters for significant ductus arteriosus. Furthermore we compared the tissue Doppler measurements with clinical findings.

Study Type

Observational

Enrollment (Anticipated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Germany
      • Berlin, Germany, 13353
        • Charite, Medical University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

1 day to 2 days (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

VLBW infants

Description

Inclusion Criteria:

  • Written parental informed consent
  • VLBW infants
  • Admitted to our NICU within 48 hours after birth

Exclusion Criteria:

  • No written parental informed consent
  • Congenital heart disease
  • Death

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Charite University, Berlin, Germany

Investigators

  • Principal Investigator: Christoph Czernik, MD, Charite, Medical University Berlin

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2008

Primary Completion (Actual)

December 1, 2009

Study Completion (Actual)

December 1, 2009

Study Registration Dates

First Submitted

November 26, 2008

First Submitted That Met QC Criteria

November 26, 2008

First Posted (Estimate)

November 27, 2008

Study Record Updates

Last Update Posted (Estimate)

April 12, 2010

Last Update Submitted That Met QC Criteria

April 9, 2010

Last Verified

April 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • EA2/072/08/2

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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