The aim of this study was to validate an asthma monitoring system based on wheezing detection in phonopneumograms. Electronic auscultation and recording of breathing was performed in a group of 26 asthmatic infants (1-7 years) in order to detect the presence of wheezing and determine appropriate respiratory spectra parameters for early detection of possible asthmatic seizures. For recording two...

OBJECTIVES To describe the prevalence of asthma and asthma variants in schoolchildren from Recife in 2002, and to compare these data with data from 1994-95; to analyze the relationship between maternal schooling and the presence of asthma or worsening asthma; and to evaluate the diagnostic accuracy of the yearly prevalence of wheezing as an asthma indicator. METHODS Cross-sectional study. A p...

BACKGROUND Studies of the prevalence of asthma among migrating populations may help in identifying environmental risk factors. METHODS We analyzed data from Vancouver, Canada, and from Guangzhou, Beijing and Hong Kong, China, collected during phase 3 of the International Study of Asthma and Allergies in Childhood. We subdivided the Vancouver adolescents according to whether they were Chinese ...

Ketamine has bronchodilator properties and is used for severe bronchospasm in adults and children with asthma. Here, we report successful use of ketamine in a young infant with bronchospasm.

attack begins. They have been here before: tightening of the chest, wheezing, coughing, difficulty breathing. Experience tells them it will pass but that does not make it any easier. Millions of Europeans, especially an increasing number of children, live with asthma and the threat of an asthma attack but it does not have to be this way1. Asthma can be controlled for long periods by combining m...

background: the basic requirements for monitoring anesthetized patients during surgery are assessing cardiac and respiratory function. esophageal stethoscopes have been developed for this purpose, but these devices may not provide clear heart and lung sound due to existence of various noises in operating rooms. in addition, the stethoscope is not applicable for continues monitoring, and it is u...

With the development of computer -systems that can collect and analyze enormous volumes data, medical profession is establishing several non-invasive tools. This work attempts to develop a technique for identifying respiratory sounds acquired by stethoscope voice recording software via machine learning techniques. study suggests trained proven CNN-based approach categorizing sounds. A visual re...

Heart sounds, the acoustic vibrations produced by the mechanical processes of the cardiac cycle, are modulated by respiratory activity. We have used computational techniques of cluster analysis and classification to study the effects of the respiratory phase and the respiratory resistive load on the temporal and morphological properties of the first (S1) and second heart sounds (S2), acquired f...

Tracheal sounds have received a lot of attention for estimating ventilation parameters in a non-invasive way. The aim of this work was to examine the feasibility of extracting accurate airflow, and automating the detection of breath-phase onset and respiratory rates all directly from tracheal sounds acquired from an acoustic microphone connected to a smartphone. We employed the Samsung Galaxy S...

BACKGROUND It can be difficult to assess bronchial responsiveness in children because of their inability to perform spirometric tests reliably. In bronchial challenges lung sounds could be used to detect the required 20% fall in the forced expiratory volume in one second (FEV1). A study was undertaken to determine whether a change in lung sounds corresponded with a 20% fall in FEV1 after methac...