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Plasma B-Type Natriuretic Peptide Concentrations in Preterm Infants < 28 Weeks

Infant, Premature Clinical Trial

Clinical Trial Summary

The aim of the study was to evaluate BNP in preterm infants < 28 weeks on the second day of life, when it is still unknown, if a patent ductus arteriosus is hemodynamic significant or not. We hypothesized that high plasma BNP concentrations on day 2 are associated with the need of PDA intervention in the further course.

Clinical Trial Description

From the study infants blood samples (0.1ml) were collected in K-EDTA microtubes within 24 to 48 hours of age through umbilical artery catheter aspiration or routine venous puncture. The samples were spun at 7000 rpm for 3 minutes. Platelet-free plasma was stored at -20°C until BNP analysis of all collected samples was carried out. The BNP assay was performed using a fully automated immunoassay system ADVIA method for the Centaur System (Bayer Diagnostic Division).

In preterm infants who were treated with indomethacin or surgical ligation we collected additional blood samples 2-4 hours before intervention and 24 hours after the completion of the ductus treatment. ;

Study Design

Observational Model: Defined Population, Primary Purpose: Screening, Time Perspective: Longitudinal

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00528736
Study type Observational
Source Charite University, Berlin, Germany
Contact
Status Completed
Phase N/A
Start date August 2005
Completion date April 2007
View Details
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