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Pediatr Pulmonol. 2024 Apr;59(4):982-990. doi: 10.1002/ppul.26860. Epub 2024 Jan 10.

ABSTRACT

INTRODUCTION: High-flow nasal cannula (HFNC) is commonly used as first step respiratory support in infants with moderate-to-severe acute viral bronchiolitis (AVB). This device, however, fails to effectively manage respiratory distress in about a third of patients, and data are limited on determinants of patient response. The respiratory rate-oxygenation (ROX) index is a relevant tool to predict the risk for HFNC failure in adult patients with lower respiratory tract infections. The primary objective of this study was to assess the relationship between ROX indexes collected before and 1 h after HFNC initiation, and HFNC failure occurring in the following 48 h in infants with AVB.

METHOD: This is an ancillary study to the multicenter randomized controlled trial TRAMONTANE 2, that included 286 infants of less than 6 months with moderate-to-severe AVB. Collection of physiological variables at baseline (H0), and 1 h after HFNC (H1), included heart rate (HR), respiratory rate (RR), fraction of inspired oxygen (FiO₂), respiratory distress score (modified Wood's Clinical Asthma Score [mWCAS]), and pain and discomfort scale (EDIN). ROX and ROX-HR were calculated as $\frac{\left(\frac{{\mathrm{SpO}}_2}{{\mathrm{FiO}}_2}\right)}{\mathrm{RR}}$ and $100\times \frac{\mathrm{ROX}}{\mathrm{HR}}$ , respectively. Predefined HFNC failure criteria included increase in respiratory distress score or RR, increase in discomfort, and severe apnea episodes. The accuracies of ROX, ROX-HR indexes and clinical variable to predict HFNC failure were assessed using receiver operating curve analysis. We analyzed predictive factors of HFNC failure using multivariate logistic regressions.

RESULT: HFNC failure occurred in 111 of 286 (39%) infants, and for 56 (50% of the failure) of them within the first 6 h. The area under the curve of ROX indexes at H0 and H1 were, respectively, 0.56 (95% confidence interval [CI] 0.48-0.63, p = 0.14), 0.56 (95% CI 0.49-0.64, p = 0.09). ROX-HR performances were better but remained poorly discriminant. HFNC failure was associated with higher mWCAS score at H1 (p < 0.01) and lower decrease in EDIN scale during the first hour of HFNC delivery (p = 0.02). In the multivariate analyses, age and mWCAS score were were found to be independent factors associated with HFNC failure at H0. At H1, weight and mWCAS were associated factors.

CONCLUSION: In this study, neither ROX index, nor physiological variables usually collected in infants with AVB had early discriminatory capacity to predict HFNC failure.

PMID:38197495 | DOI:10.1002/ppul.26860

Arch Pediatr. 2022 May;29(4):326-329. doi: 10.1016/j.arcped.2022.02.007. Epub 2022 Mar 26.

ABSTRACT

BACKGROUND: Due to the lack of available evidence on pediatric trauma care organization, no French national guideline has been developed. This survey aimed to describe the management of pediatric trauma patients in France.

METHODS: In this cross-sectional survey, an electronic questionnaire (previously validated) was distributed to intensive care physicians from tertiary hospitals via the GFRUP (Groupe Francophone de Réanimation et Urgences Pédiatriques) mailing list.

RESULTS: We collected 37 responses from 28 centers with available data, representing 100% of French level-1 pediatric trauma centers. Most of the pediatric centers (n = 21, 75%) had a written local protocol on pediatric trauma care. In most centers (n = 17, 61%), patients with severe trauma could be admitted in various locations, including the adult or pediatric emergency department or the intensive care unit. Usually, the location of the trauma room depended on the patients' age and/or severity of trauma. In 12 centers in which trauma could be managed by adult physicians (n = 12/18, 70%), a physician with pediatric expertise (anesthesiologist or intensive care physician) could be called according to the patient's age or severity of trauma. The cut-off patient age for considering pediatric expertise was mainly 3-5 years (n = 10, 83%).

CONCLUSION: Although most French level-1 pediatric trauma centers have a local protocol for pediatric trauma management, organization is very heterogeneous in France. Guidelines should focus on collaboration between professionals and hospital facilities in order to improve outcomes of children with trauma.

PMID:35351342 | DOI:10.1016/j.arcped.2022.02.007