Document Detail


Chair-Sitting Is Ineffective for Improving Respiratory Muscle Function in Mechanically Ventilated Surgically Ill Patients.
MedLine Citation:
PMID:  21513602     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Chair-sitting may allow for more readily activated scalene, sternocleidomastoid and parasternal intercostals muscles, and may raise and enlarge the upper thoracic cage, thereby enabling the thoracic cage to become more easily compressed. The purpose of this study was to evaluate the effect of chair-sitting training on respiratory muscle function of mechanically ventilated surgically ill patients. METHODS: Thirty-four patients were randomly assigned to either the control (n = 16) or chair-sitting training group (n = 18). Patients in the chair-sitting group were transferred by two intensive care unit (ICU) nurses from bed to armchair and rested for at least 30 minutes based on the individual patient's tolerance. Heart rate, blood pressure, pulse oxygen saturation (SpO₂) and respiratory rate were monitored. Respiratory muscle function parameters including frequency-to-tidal volume (Vt) ratio (f/Vt), SpO₂, maximal inspiratory pressure (P[Imax]) and maximal expiratory pressure (P[Emax]) were measured before transferring patients from bed to armchair and 30 minutes after the completion of chair-sitting in the treatment group. Measurements were also taken when control patients were lying in semirecumbent position at pre- and post-treatment times similar to those of the treatment group for at least 6 days or until the patient was discharged from the ICU or expired. RESULTS: The two groups did not differ with regard to age, gender and clinical outcomes. The values of respiratory rate, Vt, f/Vt, SpO₂, P(Imax) and P(Emax) only slightly, but not significantly, improved in response to 6 days of chair-sitting training in the treatment group. Study period had a significant positive effect on respiratory rate, Vt, P(Imax) and P(Emax) (p < 0.001) and a significant negative effecton f/Vt. CONCLUSIONS: Six days of chair-sitting training is ineffective for improving respiratory muscle function in mechanically ventilated surgically ill patients.
Authors:
Mei-Yu Chang; Li-Yin Chang; Yi-Chia Huang; Kuei-Man Lin; Chien-Hsiang Chen
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-19
Journal Detail:
Title:  Respiratory care     Volume:  -     ISSN:  0020-1324     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7510357     Medline TA:  Respir Care     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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