Bronchiolite360
Assessment of infant bronchiolitis.
Overview
Bronchiolite360 concerns assessment and reassessment of infant bronchiolitis. The approach brings together clinical observations, guidelines and descriptive scores, specifying the question each addresses.
How to use
The space is in preparation. This page presents its method and references. Wang/WBSS and modified Tal Golan–Tripto 2018 already have MediScore360 score pages containing their scoring tables, conditions of use and sources.
Method and limitations
Which population does each approach concern?
The HAS/CNPP guideline concerns a first bronchiolitis episode before 12 months. NICE recommendations and the Wang/Tal publications retain their own scopes. A score’s domain does not replace that of a clinical guideline. [B1–B5]
Chronological age, gestational age at birth, feeding and examination time provide context. Corrected age is a separate piece of information; it does not replace the chronological age used for Tal.
How can an assessment be described consistently?
Respiratory rate is counted over one minute. Heart rate, SpO₂ and respiratory signs must relate to the observed time point and retain their measurement conditions. In the HAS framework, SpO₂ while awake in room air combines two separate conditions: wakefulness and absence of supplemental oxygen. [B1]
Feeding and respiratory effort also require precise description. “Feeding less” does not establish a percentage of intake. The location of retractions does not automatically describe their intensity. An observation should not be converted into a criterion it does not represent.
How do guidelines and scores differ?
HAS/CNPP provides a non-additive clinical assessment. NICE separates assessment, referral, admission and discharge. These frameworks are not combined into common severity categories, and their thresholds are not imported into Wang or Tal. [B1, B2]
A concerning sign is considered when observed, without waiting for a total. Conversely, a low score or an unrecorded sign does not describe the whole situation. Disposition also depends on examination, feeding, context and clinical course.
What do Wang and Tal describe?
Wang/WBSS and modified Tal Golan–Tripto 2018 organise observations through their own categories. Each retains its total and meaning. Points cannot be converted between instruments or into a HAS category. Descriptions of retractions, respiratory sounds and general condition must remain those of the chosen instrument. [B3–B5]
The retained WBSS table is from De Rose et al. 2023. Wang 1992 documents the instrument’s origin and observer agreement. De Rose’s cohort concerned infants under three months; the cited Tal study involved 50 hospitalised infants under 12 months. Their findings do not automatically extend to other populations or care settings. [B3–B5]
A shared observation can contribute to several assessments when its definition and conditions match each instrument. The Wang/WBSS and modified Tal pages remain the references for using these scores.
Which observations allow a total?
A total requires every specified observation and compliance with the score’s conditions. Missing or out-of-category information is not assigned zero.
For Tal, oxygen-supported SpO₂ does not become room-air SpO₂. Oxygen must not be withdrawn to obtain a score. If one instrument is unavailable, independent observations and the other score remain usable when their own conditions are met.
What does a change at reassessment mean?
A new assessment corresponds to a new examination: dynamic signs are observed again. Comparing points requires complete totals from the same instrument and consideration of each assessment’s conditions.
A lower total describes a score change; it does not by itself demonstrate a treatment effect or readiness for discharge. PREDICT 2025 advises against routine use of a formal score to predict admission or length of stay in infants presenting or admitted to hospital. This limitation of prediction does not validate another use of the score. [B6]
References
Clinical guidelines and score publications address different questions. Each entry identifies the document used, its population and the scope of its conclusions.
Sources
Full references
Haute Autorité de Santé / Conseil national professionnel de pédiatrie. Prise en charge du premier épisode de bronchiolite aiguë chez le nourrisson de moins de 12 mois, 2019. Guideline and tool sheet, FR.
HAS/CNPP 2019: first episode before 12 months, assessment and measurement conditions. Tool sheet, recommendations and rationale remain separate documents.
National Institute for Health and Care Excellence. Bronchiolitis in children: diagnosis and management. NG9, 2015 ; thresholds updated 9 August 2021.
NICE NG9: assessment, referral, admission and discharge, each with its own conditions. Criteria are not merged with HAS criteria.
De Rose DU, Maddaloni C, Martini L, Braguglia A, Dotta A, Auriti C. Comparison of three clinical scoring tools for bronchiolitis to predict the need for respiratory support and length of stay in neonates and infants up to three months of age. Frontiers in Pediatrics. 2023;11:1040354. DOI 10.3389/fped.2023.1040354.
Table 1: source of the retained WBSS. The comparative study concerns hospitalised infants under three months; its performance does not generalise to the score’s entire domain.
Wang EEL, Milner RA, Navas L, Maj H. Observer agreement for respiratory signs and oximetry in infants hospitalized with lower respiratory infections. American Review of Respiratory Disease. 1992;145:106–109. DOI 10.1164/ajrccm/145.1.106.
Original publication on observer agreement for respiratory signs and oximetry. It informs the instrument’s origin; the operational table used is De Rose’s.
Golan–Tripto I et al. Modified Tal Score: Validated score for prediction of bronchiolitis severity. Pediatric Pulmonology, 2018. DOI 10.1002/ppul.24007.
Table 1 and §2.2: modified Tal Golan–Tripto 2018, studied in 50 hospitalised infants under 12 months. The study does not establish all outpatient uses.
PREDICT. Australasian Bronchiolitis Guideline: 2025 Update. 2025.
PREDICT 2025, R6 pp.42–43: limitation of routine prediction of admission or hospital stay. This recommendation does not validate a particular instrument.