Factors affecting abnormal triggering with non-invasive ventilators: A before-and-after study.

Introduction: Abnormal triggering of non-invasive ventilator (NIV) is the main reason for increasing the possibility of patient intolerance and directly affecting the treatment effect.

Objective: To investigate factors that affect abnormal triggering of NIV.

Methods: Thirty health volunteers from August 2018 to August 2019 were recruited.

The potential benefit of continuous metered-dose inhaler inhalation technique verbal counselling on asthmatic.

Background: Subjects' improper usage of their metered-dose inhalers (MDI) is considered a chief cause of poor asthma control. The work presented here aims to evaluate the effect of MDI verbal counselling on subjects' lung function and inhalation technique.

Method: A total number of 900 asthmatic subjects (450 female) were gathered from University hospital outpatient clinics from January 2017 to May 2019 with a mean (SD) age 45.