| Summary: | 碩士 === 國立臺灣大學 === 護理學研究所 === 88 === Abstract
The purpose of this study was to investigate the clinical significance of enforced expiratory breathing in promoting ventilation and oxygenation. A time series research design was applied to compare the effectiveness in ventilation and oxygenation when the subjects were conducting normal breathing, deep breathing and enforced expiratory breathing. Patients receiving thoracic operation for the first time in a medical center in Taipei city during October 1999 to May 2000 were recruited by purposive sampling method. 31 subjects were enrolled. The measures included: HR, RR, SBP, DBP, SpO2, EtCO2, finger temperature and perceived pain level. Subjects received measurement on the eve of surgery and on each day of the 1st week after surgery. The major statistical procedures applied to process the data were: descriptive statistics, paired-t test, and Pearson correlation coefficient.
The results revealed that enforced expiratory breathing achieved higher SpO2 and lower EtCO2 readings than those in deep breathing and normal breathing. Besides, enforced expiratory breathing achieved lower diastolic pressure, systolic pressure and higher finger temperature readings. It was concluded that enforced expiratory breathing is better than deep breathing in promoting ventilation and oxygenation, especially for thoracic surgery patient.
It is suggested that nurse include enforced expiratory breathing in the preoperative teaching for patients receiving thoracic surgery. The effect of enforced expiratory breathing may also benefit to other surgical patients, however, the effect requires further studies in the future.
Key words：enforced expiratory breathing, thoracic surgery, physiological measure, perceived pain level.
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