A comparative study on the effects of high-frequency chest well oscillation expectoration and machincal expectoration on VAP and time for withdrawing MV system
10.3969/j.issn.1006-5725.2015.19.027
- VernacularTitle:高频胸壁振荡排痰与机械振荡排痰在减少VAP发生及缩短撤机时间的比较
- Author:
Boli WANG
;
Xia HAO
;
Haibo SU
;
Xiaolan XU
;
Wenya JIA
;
Xixin YAN
- Publication Type:Journal Article
- Keywords:
Invasive mechanical ventilation;
High-frequency chest well oscillation expectoration;
Ventilator-associatedpneumonia;
ICU
- From:
The Journal of Practical Medicine
2015;(19):3205-3208
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of high-frequency chest well oscillation expectoration system on ventilator-associated pneumonia (VAP) and time for withdrawing mechanical ventilation (MV) system in ICU patients with invasive mechanical ventilation (IMV). Methods 100 ICU patients with IMV were divided into observationgroup (n = 50) and control group (n = 50). The high-frequency chest well oscillation expectoration was used in the former group and the mechanical vibration expectoration was used in the latter. The two groups were compared in terms of amount of sputum, vital signs (heart rate, breathing, systolic blood pressure and blood oxygen saturation), time for withdrawing MV system and VAP rate. Results On days 1, 2, 3, 4 and 5, the amount of sputum in the observationgroup was (33.5 ± 4.2)mL/d, (41.1 ± 3.0)mL/d, (38.2± 3 .5) mL/d, (34.8 ± 2.5) mL/d and (31.1 ± 2.1) mL/d, and those of the control group respectively was (27.4 ± 3.1) mL/d, (30.3 ± 3.6) mL/d, (28.1 ± 2.2) mL/d, (25.7±1.8)mL/d and (20.8 ± 1.7)mL/d. The differences between the two groups were statistically significant (P < 0.05). After sputum expectoration, the blood oxygen saturation of the observationgroup was significantly higher than the control group [(97.5 ± 0.9) vs. (95.2 ± 1.0)] (P <0.05), but there were no statistical differences in heart rate, breathing and systolic blood pressure (P > 0.05). The time for withdrawing MV system in the observationgroup and the control group respectively was (5.8 ± 2.2)d and (9.5 ± 1.8)d, (P < 0.05). The rates of VAP in the observationgroup and the control group respectively was 30.0% (15/50) and 52.0% (26/50), with significant difference between them (P < 0.05). Conclusion The high-frequency chest well oscillation expectoration for ICU patients with invasive mechanical ventilation can promote sputum expectoration , improve blood oxygen saturation , shorten the time for withdrawing the ventilator, and prevent the incidence of VAP.
