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Document Type

Thesis - University Access Only

Award Date


Degree Name

Master of Science (MS)


Graduate Nursing

First Advisor

Lori Hendrickx


abodmen surgery patients, chest surgery patients, respiration, respirators


Predicting successful weaning from mechanical ventilator support (MVS) has been a quest of critical care researchers for over a decade. Prolonged duration of MVS is costly and associated with poor outcomes. Early weaning from MVS is associated with decreased mortality and morbidity as well as cost and length of stay.
Along with discomfort and increased risks to the patients, MVS comes at a very high cost. Estimated yearly cost in the Unites States of patients being on prolonged MVS totals approximately 25 billion dollars per year. Long-term MVS is associated with an increase in complications and costs.
Research of surgical patients has been limited in the area of RSBI. Rapid Shallow Breathing Index has been predominately researched in medical patients. Abdominal and thoracic surgical patients are at higher risk for pulmonary complications because ofpain related to the surgical incision as it impedes the patient from ventilating in normal volumes.



Number of Pages



South Dakota State University


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