[The chest x-ray in acute bronchiolitis: Technical quality, findings, and an assessment of its reliability]. / La radiografía de tórax en la bronquiolitis aguda: calidad técnica, hallazgos y evaluación de su fiabilidad.

INTRODUCTION: Despite the recommendations of the current Clinical Practice Guidelines, the chest x-ray continues to be a widely used diagnostic test in the assessment of infants with acute bronchiolitis (AB). However, there have not been many studies that have assessed its reproducibility in these patients. In the present study, an evaluation is made on the radiographs, describing their quality, their radiological findings, and provides new evidence on the agreement between observers. METHOD: Out of a total of 281 infants admitted due to acute bronchiolitis, 140 chest x-rays were performed. Twelve doctors from different specialities evaluated the presence or absence of 10 radiological signs previously agreed by consensus. The level of agreement between 2 observers, and in groups of 3 or more, were analysed using the Cohen and Fleiss kappa index, respectively. RESULTS: Only 8.5% of the radiographs showed evidence of a complicated AB. The between-observer agreement in groups of 3 or more was medium, and with little variability (kappa: 0.20-0.40). However, between 2 observers, each observer against radiologist, the variability was wider, (kappa: -0.20-0.60). This level of agreement was associated with factors including, the sign to evaluate, the medical specialty, and level of professional experience. CONCLUSION: The low levels of agreement between observers and the wide variability, makes the chest x-ray an unreliable diagnostic tool, and is not recommended for the assessment of infants with AB.

[Use of hypotonic fluids in the prescription of maintenance intravenous fluid therapy]. / Uso de sueros hipotónicos en la prescripción de la fluidoterapia intravenosa de mantenimiento.

INTRODUCTION: Isotonic fluids, in most cases, are the safest way to dispense fluids intravenously. The aim of this study was to determine the prescription of maintenance intravenous fluids and to study possible associated factors. MATERIAL AND METHOD: A descriptive, cross-sectional, multi-centre study was performed. A questionnaire was sent nationwide to several healthcare providers via an on-line survey, sent by email through different Medical Scientific Societies, and the Official Spanish Medical Association, between December 2016 and December 2017. RESULTS: A total of 487 questionnaires were received, of which 456 were submitted by paediatricians. More than one quarter (28.95%) (95% CI; 24.77-33.13) of the paediatricians usually dispense hypotonic fluids and 81.14% (95% CI; 77.54-84.74) prescribe infusion rates based on the Holliday and Segar protocol. The general profile of paediatricians who prescribe hypotonic fluids intravenously in Spain are medical residents, paediatricians working in paediatric non-intensive care units, in private hospitals, and those who recognise that no consensus exists among their direct work colleagues regarding this subject. CONCLUSIONS: More than twenty-five per cent of all paediatricians in our country continue to use hypotonic fluids as maintenance intravenous fluid therapy. There might be several potential factors associated to this. These kind of studies provide evidence of the great difficulties in transferring scientific knowledge to clinical practice.

[Multimodal implementation of clinical practice guidelines on bronchiolitis: ending the overuse of diagnostic resources]. / Implementación multimodal de una guía de práctica clínica en bronquiolitis: acabando con el uso excesivo de recursos diagnósticos.

INTRODUCTION: Clinical Practice Guidelines have been shown to be valuable tools for guiding medical decisions. However, their mere publication has not reduced the variability of practice in terms of the way acute bronchiolitis is managed. METHOD: A before-and-after study design was used to analyse the effectiveness of a method of disseminating diagnostic recommendations among physicians regarding the management of infants, hospitalised due to bronchiolitis. Patients with comorbidities, ex-premature patients, and patients transferred to other hospitals were excluded. The diagnostic resources studied were: chest X-ray, full blood count, C-reactive protein, blood culture, venous blood gas, and determination of the respiratory syncytial virus. Eleven epidemic periods were analysed. RESULTS: A total of 259 patients were studied including 98 in the pre-intervention group (2006-2010), and 131 in the post-intervention group (2011-2017). The intervention took place in October of 2010 and 2011. A comparison of the two periods showed that the use of chest X-rays dropped from 73.5% to 16% (p<.01), full blood counts from 51% to 21.4% (p<.01), C-reactive protein from 48% to 22.1% (p<.01), and blood cultures from 23.5% to 7.6% (p<.01). Length of stay dropped by 0.6 (SD: 1) days and there were no differences in re-admission rates. CONCLUSIONS: The organised and systematised dissemination, using a multimodal method, of the diagnostic recommendations contained in the clinical practice guidelines on bronchiolitis, is capable of transforming the clinical practice by reducing the use of diagnostic resources, without an increase in the re-admission rate.