Relationships among perceived self efficacy for weaning, perceived severity of illness, anxiety and duration of spontaneous breathing trial in patients who failed the first weaning trial
Abstract:
The objective of this study was to explore the relationships among perceived self efficacy for weaning, perceived severity of illness, anxiety, and duration of spontaneous breathing trial in patients who failed the first weaning trial. The sample comprised 88 patients who had been admitted in intensive care units and general wards at two tertiary care hospitals, from February to July 2012. Data collection was performed by using a demographic data questionnaire, the visual analog perceived self efficacy for weaning scale, perceived severity of illness scale and anxiety scale, and termination of a spontaneous breathing trial for weaning record. The data were analyzed by using descriptive statistics and Pearsons Product Moment Correlation Coefficient. The results revealed that more than half of the sample were female (52.3 %), aged between 25 to 95 years. There were 38.6% of the sample perceived self efficacy for weaning that had confidence in weaning at a moderate level, 78.4% perceived severity of illness at a high level, and 88.7% had anxiety at a high to severe level. Perceived self efficacy for weaning was positively correlated with duration of spontaneous breathing trial (r = .697, p < .01) and perceived severity of illness was negatively correlated with duration of spontaneous breathing trial (r = - .234, p < .05); however, anxiety level was not statistically correlated with duration of spontaneous breathing trial (r = - .107, p > .05). Based on the study findings, it is recommended that nurses and the health care team should enhance perceived self efficacy for weaning and provide factual information related to severity of illness for this group of patients. This will help increase their confidence in spontaneous breathing trial leading to successful weaning from mechanical ventilation.