Effects of Early Changing Body Positions Influencing Tidal Volume Differences in Post Brain Surgery Patients, in Traumatic ICU, with Various BMIs
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Abstract
BACKGROUND: Difficulty weaning off a ventilator usually happens to post brain surgery patients who have respiratory complications. Collaboration with physical therapists by using the early changing body position technique improves patients who have respiratory complications to be weaned off the ventilator faster. However, the result is different depending on the body size of each patient.
OBJECTIVES: To study the effects of the early changing body position from lying to sitting to changes in the tidal volume in each group consisting of Normal BMI and Over BMI (obese) sample groups.
METHODS: By using quasi-experimental designs, the data were collected from the sample groups, which comprised 52 patients with traumatic brain injury and respiratory problems who had been using a ventilator. By using BMI, the researchers could classify the participants into two groups: BMI lower than 30 and BMI over 30. The experiment started by changing the position from lying to sitting. Moreover, the vital signs and tidal volume were observed and collected from the two sample groups every 5 min. and 10 min. The statistical techniques used in the data analysis were the mean, standard deviation, chi-square test, and two-way repeated-measures ANOVA.
RESULTS: There was a statistically significant difference of the tidal volume between lying and 5 mins of sitting, lying at 0 min. and 5 min. of sitting (p<0.05), but no difference between lying and 10 mins. of sitting. In contrast, the tidal volume in the obese group had a statistically significant difference between lying of 5 min. and 10 min. There was also a statistically significant difference between sitting at 0 min. and lying down after 5 min. of sitting. The comparison between the groups showed a statistically significant difference between sitting at 0 min. and 10 min. and lying down after 5 min., but no difference between lying and lying down at 0 min.
CONCLUSIONS: An early changing body position technique in post brain surgery patients with different BMI showed a different tidal volume.
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