Arch. Dis. Child. Fetal Neonatal Ed.. Published Online First: 12 May 2009. doi:10.1136/adc.2008.155754
Original articles |
Rapid quantitative procalcitonin measurement to diagnose nosocomial infections in newborns
1 NICU, Arnaud de Villeneuve Hospital, Montpellier, France
2 NICU, La Croix-Rousse Hospital, Lyon, France
3 Department of statistics, Arnaud de Villeneuve Hospital, Montpellier, France
* To whom correspondence should be addressed. E-mail: a-jacquot{at}chu-montpellier.fr.
Accepted 30 April 2009
Abstract
Background and objective: Serum procalcitonin (PCT) monitoring may help clinicians to manage nosocomial infections in neonates. This study investigated the diagnostic value of a new, rapid method to measure PCT and sought to determine the best cutoff value.
Methods: This monocentric, prospective study included all newborns with clinical suspicion of infection in a neonatal intensive care unit. Rapid, automated PCT measurements were performed on blood samples obtained for C-reactive protein (CRP) measurement. Negative and positive predictive values, sensitivity, and specificity were calculated. Logistic regression analysis determined the best cutoff value to obtain a negative predictive value of PCT that was at least 15% above that of CRP.
Results: Between June 2005 and May 2006, 73 newborns with a gestational age of 28 [26-30] weeks (median [Q25-Q75]) and a birth weight of 995 [720-1350] g were included. Thirty (41%) were infected. The best PCT cutoff value was 0.6 ng/mL, which provided a negative predictive value of 100%. The sensitivity, specificity, and positive predictive value were 100%, 65%, and 67%, respectively, for PCT at the 0.6 ng/mL cutoff value.
Conclusion: Rapid measurement of PCT could help to rule out nosocomial infection in newborns hospitalized in intensive care units.
eLetters:
Read all eLetters
- The exact negative predictive value of procalcitonin remains to be determined
- Pieter L.J. Degraeuwe
- Fetal Neonatal Ed. Online, 27 Oct 2009 [Full text]
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