Objective Assessment of Patient Inhaler User Technique Using an Audio-Based Classification Approach

被引:27
|
作者
Taylor, Terence E. [1 ,2 ]
Zigel, Yaniv [1 ,3 ]
Egan, Clarice [4 ]
Hughes, Fintan [1 ]
Costello, Richard W. [4 ]
Reilly, Richard B. [1 ,2 ,5 ]
机构
[1] Univ Dublin, Trinity Coll, Trinity Ctr Bioengn, Dublin, Ireland
[2] Univ Dublin, Trinity Coll, Sch Engn, Dublin, Ireland
[3] Ben Gurion Univ Negev, Dept Biomed Engn, Beer Sheva, Israel
[4] Royal Coll Surgeons Ireland, Dept Med, Dublin, Ireland
[5] Univ Dublin, Trinity Coll, Sch Med, Dublin, Ireland
来源
SCIENTIFIC REPORTS | 2018年 / 8卷
关键词
METERED-DOSE INHALERS; SELF-MANAGEMENT; INHALATION FLOW; ASTHMA CONTROL; ASSOCIATION; CHILDREN; IMPACT; ERRORS;
D O I
10.1038/s41598-018-20523-w
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Many patients make critical user technique errors when using pressurised metered dose inhalers (pMDIs) which reduce the clinical efficacy of respiratory medication. Such critical errors include poor actuation coordination (poor timing of medication release during inhalation) and inhaling too fast (peak inspiratory flow rate over 90 L/min). Here, we present a novel audio-based method that objectively assesses patient pMDI user technique. The Inhaler Compliance Assessment device was employed to record inhaler audio signals from 62 respiratory patients as they used a pMDI with an In-Check Flo-Tone device attached to the inhaler mouthpiece. Using a quadratic discriminant analysis approach, the audio-based method generated a total frame-by-frame accuracy of 88.2% in classifying sound events (actuation, inhalation and exhalation). The audio-based method estimated the peak inspiratory flow rate and volume of inhalations with an accuracy of 88.2% and 83.94% respectively. It was detected that 89% of patients made at least one critical user technique error even after tuition from an expert clinical reviewer. This method provides a more clinically accurate assessment of patient inhaler user technique than standard checklist methods.
引用
收藏
页数:14
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