PT - JOURNAL ARTICLE AU - Véronique Porot AU - Claude Guérin TI - Bench Assessment of a New Insufflation-Exsufflation Device AID - 10.4187/respcare.02345 DP - 2013 Sep 01 TA - Respiratory Care PG - 1536--1540 VI - 58 IP - 9 4099 - http://rc.rcjournal.com/content/58/9/1536.short 4100 - http://rc.rcjournal.com/content/58/9/1536.full AB - BACKGROUND: The Nippy Clearway is a new mechanical insufflation-exsufflation device used to assist cough. METHODS: We compared the peak expiratory flow (PEF) with the Nippy Clearway versus the CoughAssist in a bench experiment. The relationship between PEF and pressure at the airway opening during exsufflation (minimum expiratory PAO) was investigated under 6 combinations of compliance (30 or 60 mL/cm H2O) (C30 and C60) and resistance (0, 5, or 20 cm H2O/L/s) (R0, R5, and R20) over a 25–50 cm H2O range of set PAO. The intercepts and slopes of the linear regression performed over PEF and PAO relationships were compared for both devices. RESULTS: For the C30R0, C30R5, and C60R5 conditions, the change in both the intercepts and slopes was significant with the Nippy Clearway, compared to the CoughAssist, averaging −2.96 L/s and −0.03 L/s/cm H2O, −1.46 L/s and 0.02 L/s/cm H2O, and −1.02 L/s and −0.04 L/s/cm H2O, respectively. As a result, at any minimum expiratory PAO, PEF was significantly greater with the Nippy Clearway. For C30R20 and C60R20, the regression lines were similar for the Nippy Clearway and CoughAssist. CONCLUSIONS: In this bench study, PEF with the Nippy Clearway was greater than with the CoughAssist at low respiratory-system compliance.