Title Chest physiotherapy for acute wheezing episodes: is the appropriate treatment? Running head Acute bronchiolitis is not only acute wheezing episodes Authors Vilaro, J 1 . Torres-Castro, R 2 . Postiaux, G 3 . 1 Health Sciences Faculty Blanquerna, Physiohterapy Research Group (GReFis), Ramon Llull University. Barcelona, Spain; 2 School of physiotherapy, Medicine Faculty. University of Chile. Santiago, Chile; 3 Groupe d’Etude pluƌidisciplinaiƌe stéthacoustiƋue, Gƌand Hôpital de Chaƌleƌoi, “eƌǀice des Soins Intensifs Site Notre- Dame et Laboratoire de stéthacoustique appliquée. Charleroi, Belgium. Abstract Bronchiolitis is one of the most common respiratory infections in children. The lack of specific treatment promotes the search new interventions that might improve patients respiratory and general conditions. Chest physiotherapy could be one of these interventions. Unfortunately, until now, most of the published studies have committed two major errors: 1) try to treat diseases misdiagnosed that often cannot be treated by physiotherapy, for example acute episodes of wheezing, such as the study of Castro- Rodriguez or 2) use techniques or protocols that do not affect the problem to be addressed. For example, to use mucus drainage techniques to treat an inflammatory and/or bronchoespastic process. This letter aims to highlight these errors produced by the study of Castro-Rodriguez and correctly pointed out specific points which should be considered for future studies that want to validate chest physiotherapy in bronchiolitis