Poster Presentation
Friday, July 13, 2007
9:30 AM - 10:15 AM
Friday, July 13, 2007
3:15 PM - 4:00 PM
Influencing Factors of weaning from long-term mechanical ventilation for critically ill patients
Chia-Chen Yang, RN, MS, Nursing Department, Tri-Service General Hospital, Taipei, Taiwan and Kwua-Yun Wang, RN, MS, School of Nursing, National Defense Medical Center, Taipei, Taiwan.
| Learning Objective #1: The learner will be able to understand the critical successful factors of weaning from long-term mechanical ventilation support in Taiwan. |
| Learning Objective #2: The learner will be able to establish the vatilatior weaning parameters for patients with long term mechanical ventilation support in respiratory care center. |
Purpose: The main purpose of this study is to find out the critical successful factors of weaning from long-term mechanical ventilation support in Taiwan.
Method: A prospective study design was conducted from June 2003 to February 2004, in which we collected the patients with mechanical ventilation in the respiratory care center of a medical center in Taipei city. A total of 90 cases that met the selection criteria (had been ventilator dependent for over 7 days) were recruited in the study. Those who were able to wean from mechanical ventilation (disconnected > 48hours) were coined “success group”, and those could not were in “failure group”. Data were collected by a standard structured questionnaire, and measured respiratory physiology parameters. Data were analyzed using percentage, mean, standard deviation, frequency, t-test, Chi-Square, and ROC curve evaluation.
Results: Fifty-four patients (60%) were liberated from ventilator successfully. The minute ventilation(VE), peak expiratory flow(PEF), tidal volume(VT), Hemoglobin were significantly higher in patients who successfully weaned (p<.05), and spontaneous respiratory rate, blood urea nitrogen(BUN), AST and rapid shallow of breath index (RSBI) were lower (p<.05). According to ROC curve evaluation, PEF, Hemoglobin and VE had more efficacy to predicted the prognosis.
Conclusions: This study revealed that PEF, Hemoglobin and VE were the most important factors related to successful weaning from ventilator for patients with long-term mechanical ventilation support in Taiwan.