Abstract | BACKGROUND: Plasma proadrenomedullin (proADM) is a promising biomarker to predict disease severity in community-acquired pneumonia (CAP). Urinary biomarkers offer advantages over blood, including ease of collection. We evaluated the association between urinary proADM and disease severity in pediatric CAP. METHODS: We performed a prospective cohort study of children 3 months to 18 years with CAP. Urinary proADM/ creatinine (Cr) was calculated. Disease severity was defined as: mild (discharged home), mild-moderate (hospitalized but not moderate-severe or severe), moderate-severe (eg, hospitalized with supplemental oxygen and complicated pneumonia) and severe (eg, vasopressors and invasive ventilation). Outcomes were examined using logistic regression within the cohort with suspected CAP and in a subset with radiographic CAP. RESULTS: Of the 427 children included, higher proADM/Cr was associated with increased odds of severe disease compared with nonsevere disease [suspected CAP, odds ratio (OR) 1.02 (95% confidence interval (CI) 1.003, 1.04); radiographic CAP, OR 1.03 (95% CI 1.01, 1.06)] when adjusted for other covariates. ProADM/Cr had an area under the receiver operating characteristic curve of 0.56 (threshold 0.9 pmol/mg) to differentiate severe from nonsevere disease in suspected CAP and 0.65 in radiographic CAP (threshold 0.82 pmol/mg). Healthy controls had less proADM in their urine (median, 0.61 pmol/mg) compared with suspected (0.87 pmol/mg, P = 0.018) and radiographic (0.73 pmol/mg, P = 0.016) CAP. CONCLUSIONS: Urinary proADM/Cr ratio measured at the time of emergency department visit was statistically associated with the development of severe outcomes in children with CAP, with stronger discriminatory performance in radiographic disease.
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Authors | Todd A Florin, Lilliam Ambroggio, Samir S Shah, Richard M Ruddy, Eric S Nylen, Lauren Balmert |
Journal | The Pediatric infectious disease journal
(Pediatr Infect Dis J)
Vol. 40
Issue 12
Pg. 1070-1075
(Dec 01 2021)
ISSN: 1532-0987 [Electronic] United States |
PMID | 34533488
(Publication Type: Journal Article)
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Copyright | Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved. |
Chemical References |
- Biomarkers
- Protein Precursors
- proadrenomedullin
- Adrenomedullin
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Topics |
- Adolescent
- Adrenomedullin
(urine)
- Biomarkers
(urine)
- Child
- Child, Preschool
- Community-Acquired Infections
(diagnosis, urine)
- Emergency Service, Hospital
(statistics & numerical data)
- Female
- Humans
- Infant
- Logistic Models
- Male
- Pneumonia
(diagnosis, urine)
- Prognosis
- Prospective Studies
- Protein Precursors
(urine)
- ROC Curve
- Severity of Illness Index
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