Xun Liu1, Huisheng Deng1, Ziyang Huang1, Bingbing Yan1, Jingjing Lv1, Jinxing Wu2. 1. Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University Chongqing 400016, P.R. China. 2. Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University Chongqing 400016, P.R. China.
Abstract
OBJECTIVE: This study is to test the effectiveness of fiber-optic-guided endotracheal suction catheter (visual sputum suctioning system or VSSS) in dog models. METHODS: Dog sputum models were established by administering dimethoate emulsifiable. Twenty-seven intubated dogs were equally randomized into three groups of conventional suctioning (CS) group, VSSS with no supplemental oxygen (VSSS) group and VSSS with 100% oxygen (VSSS/O2) group. The suctioning efficiency, vital signs and tracheal wall injury were assessed. RESULTS: The VSSS/O2 (8.6 ± 0.7g) and VSSS groups (8.5 ± 0.9 g) collected significantly more sputum than the CS group (5.9 ± 0.8 g) (P < 0.05 for VSSS/O2 group versus CS group; P < 0.05 for VSSS group versus CS group). Immediately after suctioning, the arterial partial pressure of oxygen (PaO2 ) of VSSS/O2 group was significantly higher than that of the VSSS group or the CS group (both P < 0.05), and 5 min after suction the PaO2 , the mean arterial pressure (MAP) and heart rate (HR) in all groups returned to the baseline (p = 0.54, P = 0.67, P = 0.11, respectively). Moreover, in the VSSS/O2 and VSSS groups all the three variables were higher than the CS group at 5 min after suctioning (P < 0.01, P = 0.03; P = 0.02, P < 0.01; P = 0.02, P = 0.01 respectively). CONCLUSIONS: Visual sputum suctioning system collected more sputum and caused less tracheal mucosa damage than conventional suctioning.
OBJECTIVE: This study is to test the effectiveness of fiber-optic-guided endotracheal suction catheter (visual sputum suctioning system or VSSS) in dog models. METHODS:Dog sputum models were established by administering dimethoate emulsifiable. Twenty-seven intubated dogs were equally randomized into three groups of conventional suctioning (CS) group, VSSS with no supplemental oxygen (VSSS) group and VSSS with 100% oxygen (VSSS/O2) group. The suctioning efficiency, vital signs and tracheal wall injury were assessed. RESULTS: The VSSS/O2 (8.6 ± 0.7g) and VSSS groups (8.5 ± 0.9 g) collected significantly more sputum than the CS group (5.9 ± 0.8 g) (P < 0.05 for VSSS/O2 group versus CS group; P < 0.05 for VSSS group versus CS group). Immediately after suctioning, the arterial partial pressure of oxygen (PaO2 ) of VSSS/O2 group was significantly higher than that of the VSSS group or the CS group (both P < 0.05), and 5 min after suction the PaO2 , the mean arterial pressure (MAP) and heart rate (HR) in all groups returned to the baseline (p = 0.54, P = 0.67, P = 0.11, respectively). Moreover, in the VSSS/O2 and VSSS groups all the three variables were higher than the CS group at 5 min after suctioning (P < 0.01, P = 0.03; P = 0.02, P < 0.01; P = 0.02, P = 0.01 respectively). CONCLUSIONS: Visual sputum suctioning system collected more sputum and caused less tracheal mucosa damage than conventional suctioning.
Authors: Tom J Overend; Cathy M Anderson; Dina Brooks; Lisa Cicutto; Michael Keim; Debra McAuslan; Mika Nonoyama Journal: Can Respir J Date: 2009 May-Jun Impact factor: 2.409
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