| Background: Asthma patients have difficulty using the Metered Dose Inhaler (MDI) correctly. Prior studies have shown that adequate training helps in the correct usage of this method of drug administration. The aim of this study is to determine if patients can be taught the use of the MDI with a video intervention. We will examine retention of this information as well.;Methods: Patients were randomized into an experimental group (MDI training video) and a control group (asthma information video). Demographic information was obtained as well as the initial Peak Flow (PF). Every patient had a pre, post and one month follow up evaluation by the same examiner to avoid examiner bias. The examiner was blinded to the intervention. This study was approved by the hospital IRB.;Results: There were 133 patients enrolled in the study; 116 completed the study. On average, the experimental group (MDI training video) had a 15.92% increase in correct usage after intervention, whereas the control group (asthma information video) had a 1.16% increase in correct usage (t = - 6.682 (95%CI for a mean diff of -14.77, -19.149, -10.391 p< 001). Comparing percent correct change from pre video to one month later post-video, the experimental group (MDI training video) had a 15% increase in percent correct after intervention, whereas the control group (asthma information video) had an increase in percent correct of 1.62% (t = -5.772 (95CI for mean diff of -13.298 was: -17.862, -8.735) p< 001).;Conclusion: The MDI video training was demonstrated to improve subject's use of the MDI. Study subjects with the MDI training video were also shown to retain this information after one month. |
