Paper Information

Journal:   AVICENNA JOURNAL OF CLINICAL MEDICINE (SCIENTIFIC JOURNAL OF HAMADAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES)   Spring 2002 , Volume 9 , Number 1 (SN 23); Page(s) 39 To 45.
 
Paper: 

STUDY OF SEMI-FOWLER*S POSITION AND ITS DURATION EFFECT ON THE ARTERIAL BLOOD GASES RESULTS IN PATIENTS UNDER MECHANICAL VENTILATION HOSPITALIZED IN GENERAL ICU

 
 
Author(s):  SAFARI M.*, ANSARI M., AMINI MOHSEN
 
* Department of Nursing, School of Nursing & Midwifery, Hamadan University of Medical Sciences & Health Services, Hamadan, Iran
 
Abstract: 

Position changing with blood distribution to different portions of lung can produce V/Q mismatch, and finally extend to oxygenation disruption. Thus, if position changing is done' neglecting the patients' pulmonary problem types, not only does it fail to cause oxygenation improvement, but it also induces gas exchange impairment, and with provocation of hypoxemia and respiratory acidosis, serious problems result. The goals of this research are to determine the semi-fowler's position and its duration effect on the arterial blood gases (ABGs) results in patients under mechanical ventilation hospitalized in general ICU.
In this study, 30 ICU patients (22 males and 8 females) under mechanical ventilation were chosen. Then using questionnaires, the patients' demographic data were collected. A sample of arterial blood from these patients lying in supine position, was taken. Again the patients immediately were placed in semi-fowler's position and after 15, 30, 45, and 60 minutes lying in this position, samples of arterial blood were taken and sent to laboratory. The findings showed that semi-fowler's position did not have any positive effects on oxygenation and gas exchange. Also, the findings indicated that the effect of lying duration (15, 30, 45, 60 minutes) in semi-fowler's position on oxygenation and gas exchange wasn't significant.
It was concluded that without considering the lung pathology, semi fowler's position should not be used, because not only is this position unable to induce oxygenation-improvement, but actually it may causes gas exchange impairment.

 
Keyword(s): BLOOD GAS ANALYSIS, MECHANICAL VENTILATION, POSTURE
 
References: 
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