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Clinical Investigations

Changes in the lung functions of an individual during his normal sleeping body and arm position compared to supine position

Authors:

MVG Pinto ,

University of Peradeniya, LK
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A Kariyawasam,

University of Peradeniya, LK
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TDP Nandadeva,

University of Peradeniya, LK
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IUK Marasinghe,

University of Peradeniya, LK
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U Amarasinghe,

University of Peradeniya, LK
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NS Jayakody,

University of Peradeniya, LK
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WNL Weerasinghe

University of Peradeniya, LK
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Abstract

In normal people there are considerable inequalities of the ventilation and perfusion in the lung which can be further changed by position. Thus different V/Q mismatches will ultimately have an impact on arterial oxygenation. This study was designed to detect whether the lung functions are changed by adopting the patient’s normal sleeping posture and the arm position during sleep.

The study was carried out as a prospective randomized study. The subjects suffering from asthma, COPD, acute lung infections or any chest deformity were excluded. Spontaneous Tidal Volume (STV), Forced Vital capacity (FVC), Inspiratory and Expiratory reserve volumes were measured in supine position and after adopting their normal sleeping posture with head and arm position.

Mean age, Height and Weight of the sample did not show a significant difference. Paired t test was used to analyze the lung functions in all three positions. With regard to STV and FVC there is a significant difference of p<0.05 between supine position and after adopting the most comfortable sleeping position.

With the evidence of this study, lung functions are improved by adopting an individual’s most comfortable sleeping position with arm position. This may be useful in clinical practice to improve oxygenation while ventilating patients.  

DOI: 10.4038/slja.v18i2.2441

Sri Lankan Journal of Anaesthesiology 18(2): 72-74 (2010)

DOI: http://doi.org/10.4038/slja.v18i2.2441
How to Cite: Pinto, M. et al., (2010). Changes in the lung functions of an individual during his normal sleeping body and arm position compared to supine position. Sri Lankan Journal of Anaesthesiology. 18(2), pp.72–74. DOI: http://doi.org/10.4038/slja.v18i2.2441
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Published on 29 Nov 2010.
Peer Reviewed

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