Comparative study on application effect of artificial nose and heating humidification combination device in high altitude area / 中国实用护理杂志

ABSTRACT

Objective To investigate the application and effect evaluation of combined warming and humidification device in patients with artificial airway in high altitude area. Methods The convenient sampling method was used to select 225 hospitalized patients in the Department of Critical Care Medicine of the People′s Hospital of Tibet Autonomous Region from January to June 2018. According to the order of admission time, they were divided into two groups observation group (125 cases) and control group (100 cases). The observation group was humidified by artificial nose, while the control group was humidified by heating and humidifying device. The phlegm properties and scab formation were observed in the two groups. The ambient temperature, humidity and airway temperature were measured at 300, 900, 1500 and 2100 every day. The average values of four measurements were taken. The levels of CO2 partial pressure and oxygen partial pressure were recorded by blood gas analysis. χ2was used to compare the differences between the 2 groups. Results There was no difference in sputum properties between the two groups before humidification. The incidence of grade II and grade III mucous phlegm in the observation group was 46, 48 and 65 on the first, second and third day after humidification, while that in the control group was 13, 9 and 10 respectively. The difference between the two groups was statistically significant (χ2=16.266, 25.387, 44.100, P<0.01). On the 2nd and 3rd day, the oxygen partial pressure levels of the observation group were (92.62 ± 5.73), (91.34 ± 4.82) mmHg, and those of the control group were (96.17 ± 3.60), (95.53 ± 2.96) mmHg, respectively. The difference between the two groups was statistically significant (t=5.697, 8.045, P<0.01). The sputum scab formation and airway temperature in the observation group were 41 cases and(29.89±1.95)℃ respectively after 3 days of humidification, 7 cases and(34.79±1.82)℃respectively in the control group. The difference between the two groups was statistically significant (χ2= 22.035, t =- 26.031, P < 0.01). Conclusion The combination of heating and humidifying device can effectively improve the sputum properties, reduce the formation of sputum scab, effectively improve the level of carbon dioxide, without increasing the workload.