Mathematical model building of airbag pressure decay used in artificial airway patients
10.3760/j.issn.1674-2907.2014.34.045
- VernacularTitle:人工气道气囊压力衰减数学模型的建立及应用
- Author:
Lijie MAO
1
;
Yeqin YANG
;
Danwen ZHUANG
;
Xiuyun ZHENG
;
Wei LI
;
Shuzhen CHEN
Author Information
1. 325000 温州医科大学附属第一医院呼吸内科
- Keywords:
Artificial airway;
Airbag pressure;
Mathematical model of airbag pressure decay
- From:
Chinese Journal of Modern Nursing
2014;20(34):4392-4394
- CountryChina
- Language:Chinese
-
Abstract:
Objective To monitor the airbag pressure of artificial airway in mechanical ventilation patients, and to establish a mathematical model of airbag pressure decay, so as to explore the best interval of time for airbag pressure monitoring and provide a scientific basis to standardize the management of those patients.Methods Totals of 158 patients in respiratory intensive care unit ( RICU) with artificial airway were selected according to the upper limit of value, recommended by the guideline, the pressure of airbag was revised to 30 cmH2 O.The PORTEX pressure monitoring table was used and recorded every hour.Based on the recorded value, the mathematical model of airbag pressure decay was established using the curve fitting method, and then obtained the suitable interval of time for airbag pressure monitoring.Results Based on the recorded value and establishment of the mathematical model of airbag pressure decay, the optimum interval of time was 4.24 hours. If based on the lower limit of airbag pressure checked each hour, the optimum interval of time was 3.06 hours. Conclusions For the patients who have set up an artificial airway, the time for monitoring and correcting airbag pressure should be at least 4.24 hours.If based on a more safety point of view to prevent air leakage and the occurrence of complications, it should be at least 3.06 hours.
