[Predictive factors for failure of continuous positive airway pressure treatment in infants with bronchiolitis]

OBJECTIVE

To study the predictive factors for the failure of continuous positive airway pressure (CPAP) treatment in infants with bronchiolitis.

METHODS

A retrospective analysis was performed on the clinical data of 310 hospitalized children (aged 1-12 months) with bronchiolitis treated with CPAP. Their clinical features were compared between the successful treatment group (270 cases) and the failed treatment group (40 cases). A multivariate logistic regression analysis was used to explore the predictive factors for failure of CPAP treatment.

RESULTS

The multivariate logistic regression analysis showed that the score of the Pediatric Risk of Mortality III (PRISM III) ≥10 (OR=13.905), development of atelectasis (OR=12.080), comorbidity of cardiac insufficiency (OR=7.741), and no improvement in oxygenation index (arterial partial pressure of oxygen/fraction of inhaled oxygen, P/F) after 2 hours of CPAP treatment (OR=34.084) were predictive factors for failure of CPAP treatment for bronchiolitis (P<0.05). In predicting CPAP treatment failure, no improvement in P/F after 2 hours of CPAP treatment had an area under the receiver operating characteristic curve of 0.793, with a sensitivity of 70.3% and a specificity of 82.4% at a cut-off value of 203.

CONCLUSIONS

No improvement in P/F after 2 hours of CPAP treatment, PRISM III score ≥10, development of atelectasis, and comorbidity of cardiac insufficiency can be used as predictive factors for CPAP treatment failure in infants with bronchiolitis.

Vaccination Status and Resource Use During Hospital Visits for Respiratory Illnesses

OBJECTIVES

To evaluate variation in resource use for children with acute respiratory tract illness (ARTI) by vaccination status.

METHODS

We conducted a retrospective cohort study of children 0 to 16 years of age at 5 children's hospitals with 1 of 4 ARTI diagnoses (pneumonia, croup, asthma, and bronchiolitis) between July 2014 and June 2016. The predictor variable was provider-documented up-to-date (UTD) vaccination status (yes or no). Outcomes were receipt of each of the following tests or treatments (yes or no): complete blood cell count, blood cultures, C-reactive protein (CRP) level testing, viral testing, influenza testing, pertussis testing, chest radiographs, neck radiographs, antibiotics, and corticosteroids. We generated multivariable logistic regression models to examine the associations between our predictor and outcomes.

RESULTS

Of the 2302 participants included in analysis, 568 (25%) were diagnosed with pneumonia, 343 (15%) were diagnosed with croup, 653 (28%) were diagnosed with asthma, and 738 (32%) were diagnosed with bronchiolitis. Most (92%) vaccination statuses were documented as UTD. Across conditions, children whose vaccination status was documented as not UTD had higher adjusted odds of receiving a complete blood cell count, blood culture, CRP level testing, and influenza testing (P < .001). Children with pneumonia whose vaccination status was documented as not UTD had higher adjusted odds of receiving CRP level testing and influenza testing (P < .001). Children with croup whose vaccination status was documented as not UTD had higher adjusted odds of receiving blood cultures (P < .001).

CONCLUSIONS

Children with ARTI whose vaccination status was documented as not UTD had higher odds of undergoing laboratory testing compared with children whose vaccination status was documented as UTD.

[Expression and clinical significance of runt-related transcription factor 3 in children with bronchiolitis]

OBJECTIVE

To study the mRNA level of runt-related transcription factor 3 (RUNX3) in children with bronchiolitis and its clinical significance in bronchiolitis.

METHODS

A total of 54 young children with bronchiolitis were enrolled as the bronchiolitis group, among whom 28 with atopic constitution were enrolled in the atopic bronchiolitis group and 26 with non-atopic constitution were enrolled in the non-atopic bronchiolitis group. A total of 48 healthy young children were enrolled as the healthy control group, among whom 24 with atopic constitution were enrolled in the atopic healthy control group and 24 with non-atopic constitution were enrolled in the non-atopic healthy control group. Quantitative real-time PCR was used to measure the mRNA level of RUNX3 in peripheral blood mononuclear cells. ELISA was used to measure the serum levels of interleukin-4 (IL-4) and interferon gamma (IFN-γ).

RESULTS

The bronchiolitis group had a significantly lower mRNA level of RUNX3 than the healthy control group, and the atopic bronchiolitis group had a significantly lower mRNA level of RUNX3 than the non-atopic bronchiolitis, atopic healthy control, and non-atopic healthy control groups (P<0.05). The bronchiolitis group had a significantly higher serum level of IL-4 than the healthy control group, and the atopic bronchiolitis group had a significantly higher serum level of IL-4 than the non-atopic healthy control group (P<0.05). The bronchiolitis group had a significantly lower serum level of IFN-γ than the healthy control group, and the atopic bronchiolitis group had a significantly lower serum level of IFN-γ than the non-atopic bronchiolitis, atopic healthy control, and non-atopic healthy control groups (P<0.05). The correlation analysis showed that the mRNA level of RUNX3 was negatively correlated with the serum level of IL-4 and was positively correlated with the serum level of IFN-γ (P<0.05).

CONCLUSIONS

Measurement of RUNX3 gene expression in peripheral blood mononuclear cells has a certain value in identifying children with atopic constitution at high risk of asthma among children with bronchiolitis.

Diffuse panbronchiolitis research in MEDLINE (1969-2017): Report of a bibliometric analysis

BACKGROUND

Given the well documented and undesired impact of diffuse panbronchiolitis (DPB), there is a need to create a statistical inventory of research output on DPB. The aim of this study was to identify and analyze different trends in publication over time, with technological additions.

METHODS

Articles indexed in MEDLINE regarding DPB were retrieved using PubMed. Citation results were categorized by article type, year of publication, language, and country.

RESULTS

A total of 657 publications, published between 1969 and 2017 were retrieved from PubMed; the year with the highest number of articles published was 1992 (n = 32). Japan accounted for 68.34% (n = 449) publications, followed by the United States of America (USA; 6.70%, n = 44) and China (5.48%, n = 36). English (n = 401) was the most commonly used language in the publications, followed by Japanese (n = 223) and Chinese (n = 16). Articles were published in 218 different journals; The Japanese Journal of Thoracic Diseases published the maximum number of articles, accounting for 13.7% (n = 90) citations. Sugiyama Y was the most productive author and contributed to 12 publications.

CONCLUSIONS

This was the first bibliometric analysis of DPB. Between 1991 and 2000, the number of publications on DPB literature reached a peak, and although the frequency of publication has decreased recently, the quantity of DPB research during the past 48 years is adequate and satisfactory. Overall, the publications on DPB have undergone exponential growth over the last 30 years.

[Signs of severity of acute bronchiolitis of the infant]

Signs of severity of acute bronchiolitis in the infant. About 3% of infants suffering from bronchiolitis will need hospitalization. Criteria to decide are mainly clinical: comorbidities (prematurity, cardiopulmonary pathology, age less than 6 weeks old), intensity of respiratory distress attested by polypnea, toxic aspect, inadequate oral food intake, need for O2 or and socio-familial criteria for confidence in looking for the child.