Respiratory admissions before and during the COVID-19 pandemic with mediation analysis of air pollutants, mask-wearing and influenza rates.

Background And Objective: Decline in hospitalizations for various respiratory diseases has been reported during the COVID-19 pandemic, but what led to such an observation is uncertain.

Methods: This was a territory-wide, retrospective cohort study involving all public hospital admissions in Hong Kong from 1 January 2017 to 31 December 2020. Hospital admissions for respiratory diseases, including asthma, COPD and non-COVID pneumonia, were assessed.

Effect of short-course exercise training on the frequency of exacerbations and physical activity in patients with COPD: A randomized controlled trial.

Background And Objective: Previous studies have suggested that early pulmonary rehabilitation (PR) programmes post-AECOPD are an effective and safe intervention for reducing hospital admissions and improving quality of life. This study assessed whether a short course of exercise training post-AECOPD with periodic reinforcement exercise training and phone call reminders reduces readmissions and increases physical activity in COPD patients.

Methods: Subjects were randomized into either the (i) intervention group (IG), consisting of 4-8 weeks of training supervised by a physiotherapist and phone contact every 2 weeks by a case manager providing support and reinforcement of continuous exercise at home or (ii) usual care group (UG), which had no input by a physiotherapist or case manager.

Molecular detection of respiratory pathogens and typing of human rhinovirus of adults hospitalized for exacerbation of asthma and chronic obstructive pulmonary disease.

Background: Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) and asthma are associated with a variety of precipitating factors including infection. This study assessed the infective viral etiologies by real-time multiplex polymerase chain reaction of patients hospitalized with AECOPD and asthma exacerbations. In addition, infective etiologies were assessed for association with the clinical outcome of the patients.

Blood eosinophil count as a predictor of hospital length of stay in COPD exacerbations.

Background And Objective: Airway inflammation accompanying exacerbations varies among individuals with some having neutrophilic, while others showing eosinophilic inflammation. This study assessed the cut-off values of blood eosinophil count for identifying subjects with longer hospital length of stay (LOS) with acute exacerbations of chronic obstructive pulmonary disease (AECOPD).

Methods: Patients were recruited at presentation to the hospital with an AECOPD.