PURPOSE
This retrospective study was designed to examine the frequency of unplanned extubation, and to identify the related factors of unplanned extubation in medical intensive care unit patients.
METHODS
Data were collected from medical records of patients who received intubation in a medical intensive care unit. One hundred eighteen patient charts were selected for the study. The Patient Severity Classification Scale and unplanned extubation risk factors were examined. Data were analyzed with descriptive statistics, chi2-test, Fisher's exact test and Mann-Whitney U test.
RESULTS
The incidence of unplanned extubation was 11 (9.32%) out of 118 patients who had undergone intubation. There were statistically significant differences between the unplanned extubation and work shift (chi2=61.52, p=.001), ventilation mode (p=.001), number of days of ventilator application (U=366.00, p=.038) and administration of sedatives (p=.025).
CONCLUSION
Unplanned extubation is affected by the following variables: a) whether a nurse is in night shift, b) whether ventilation is mandatory, c) duration of ventilation use and d) administration of sedatives.

PURPOSE
This study was designed to identify the factors that influenced the decision to have a colonoscopy.
METHODS
The sample was one hundred ninety four subjects who completed a self administrated survey. The survey posed questions of self-efficacy scale, fatalism scale and an intention scale. Data were analyzed with descriptive and inferential statistics including t-test, ANOVA, Pearson's correlation and multiple regression analysis.
RESULTS
There were statistically significant differences among the intention of having a colonoscopy and age, educational background, occupation and income. There was a statistically significant positive correlation between self-efficacy and intention of having a colonoscopy. In contrast, there was a negative correlation between fatalism and decision to have a colonoscopy. Self-efficacy, income and age were significant predictors of the decision to have a colonoscopy; accounting for 44.3% of the total variance.
CONCLUSION
Self-efficacy and fatalism were influence the decision to have a colonoscopy. As a result of these, it may be useful to develop strategies to foster decision making to have a colonoscopy utilizing the findings from this study.

PURPOSE
This correlation study was designed to examine the relationships among reported violence experience, hardiness, and job satisfaction of nurses in an emergency department and to identify the factors that predict their job satisfaction.
METHODS
The study was conducted using a convenience sample of one hundred and fifteen nurses from nine hospitals. Data were collected using structured questionnaires including Assault Response Questionnaire (Jung, 2008), Dispositional Resilience Scale-15 (Bartone, 1995) and job satisfaction Questionnaire (Yun, 2004). Data were analyzed by using descriptive statistics, Pearson correlation coefficients, and multiple regression.
RESULTS
Hardiness and job satisfaction were statistically significant positive correlation (r=.44, p<.001). Further, there was a negative correlation between response to violence experiences and job satisfaction (r=-.33, p<.001) and between hardiness and response to violence experiences (r=-.41, p<.001). Emotional response and physiological responses of violence experience and hardiness were significant predictors of job satisfaction, and explained 29.6% of the total variance.
CONCLUSION
Previous experiences with violence were an important factor which contribute to lower job satisfaction as reported by emergency department nurses. However it was also noted that hardiness was an important factor that could be used to improve job satisfaction of emergency department nurses.

PURPOSE
This cross-sectional survey research was undertaken to identify the factors influencing time from onset to hospital arrival of stroke patients and to provide basic information for the development of intervention programs for stroke patients.
METHODS
The data were collected using a convenient sampling method from three hospitals in Inchon. The subjects were 78 patients who were diagnosed as stroke by doctor and they voluntarily participated in the study.
RESULTS
On the average, subjects arrived at the hospitals by 16.72 hours after the onset of stroke events with the range from 0.17 hours to 72 hours. Thirty-four(43.6%) subjects arrived within 3 hours which can maximize treatment effects. There was significant difference in hospital presentation time according to the level of knowledge(chi-square=18.629, p=.0003). A negative correlation was found between the hospital presentation time and self-efficacy (r= -.320, p=.004). Stepwise multiple regression analysis revealed that the most powerful predictor was self-efficacy. Self-efficacy, the level of knowledge and physical symptoms were significant factors and accounted for 21.7% of the variance of hospital presentation time in stroke patients.
CONCLUSION
According to the results, self-efficacy is a useful concept for reducing the hospital presentation time from onset of attack in stroke patients. Therefore, nurses should consider educational programs which include not only a knowledge of stroke and recurrence prevention but also the concept of self-efficacy.

PURPOSE
The purpose of this study was to investigate differences between a pulmonary aspiration group and a non-pulmonary aspiration group in glucose concentration of tracheal secretions by measuring time and feeding methods.
METHOD
The subjects were 36 ICU patients who were receiving formula via nasogastric tubes and had endotracheal tubes or tracheostomy tubes. Tracheal secretions were collected by connecting suction traps to a suction catheter in three different times(within 1 hour after feeding, between 1 to 2 hours after feeding, and between 2 to 3 hours after feeding) for 2 days, overall six times. Glucose concentration of tracheal secretions was measured with the glucometer(Accucheck II).
RESULTS
Glucose concentration of tracheal secretions increased in progression after feeding. The mean of specimens collected last(between two to three hours after feeding) was shown to be the highest value(M= 61.61 mg/dl) in the pulmonary aspiration group. Significantly(p=.000) more subjects(94.44%) in the pulmonary aspiration group received formula via a 50cc syringe than those in the non-pulmonary aspiration group(22.22%).
CONCLUSION
Critically ill patients may need more time for head-elevation after tube feeding to prevent pulmonary aspiration. In practice, enteral formula should not be given the patients via a 50cc syringe anymore, instead a feeding bag or infusion pump should be used to prevent pulmonary aspiration.

PURPOSE
The purpose of this study was to investigate differences in smoking related characteristics and psychological features of coronary artery patients by the stages of change in smoking cessation behaviors. METHOD: Subjects for this survey were 97 patients who were smoking when doctors diagnosed them to have coronary artery diseases. RESULT: Subjects were distributed 21.6% in precontemplation stage, 24.7% in contemplation stage, 17.5% in preparation stage, 19.6% in action stage, and 16.5% in maintenance stage respectively. The numbers of previous attempts to quit smoking of subjects in precontemplation stage(mean=3.00, SD=3.71) and contemplation stage(mean=2.63, SD=2.32) were significantly lower than that of subjects in preparation stage(mean=5.82, SD= 6.20). Benefit scores of subjects in maintenance stage were significantly greater than those of subjects in precontemplation stage. Self-efficacy, barriers, seriousness, and nicotine dependency were not significantly different by the stages of change. Number of signs and symptoms related to smoking which subjects were experiencing were not significant by the stages of change too. CONCLUSION: Future intervention programs for smoking cessation should be focused on the strategies to enhance the realization of health benefits that patients might acquire from smoking cessation.

PURPOSE
The purpose of this correlational study was to identify relationships among job stress, health beliefs and health behaviors of aircrews and contributing factors to aircrew's health promoting behaviors.
METHOD
Two-hundred twenty-four aircrew members completed questionnaires. The questionnaires were composed of a demographic form, health behavior scale, self-efficacy scale, perceived benefit scale, perceived barrier scale, job demand scale, and latitude scale.
RESULT
The subject's health behavior has shown significant correlations with self-efficacy, benefit, and barrier. Significant negative correlations were found between job stress and self-efficacy. Relationships between job stress and barriers were also statistically significant. In demographic features, statistically significant difference were found between subject's rank and job stress score. Also, there was a significant difference between health behavior and the subject's age.
CONCLUSION
Future efforts should focus on the development of a program to consider aircrew's perceived benefits, perceived barriers and self-efficacy to the compliance of health promoting behaviors.