Effects of Changing Body Position upon Improved Ventilation-Perfusion Relationships

Clauss, Roy H.; Scalabrini, Bertrand Y.; Ray, Jefferson F.; Reed, George E.

doi:10.1161/01.cir.37.4s2.ii-214

Cited by 17 publications

(10 citation statements)

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“…Mean expiratory pressure and peak expiratory flow rate are influenced by lung volumes and muscle length-tension relationships, which in turn are influenced by body position9 ) . Vital capacity has been found to be lowest in the fetal position compared to other body positions10,11,12 ) . The effects of breathing maneuver and sitting posture on the muscle activities of the inspiratory accessory muscles of patients with chronic obstructive pulmonary disease have been reported13 ) .…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Positions on FVC and FEV<sub>1</sub> Measurements of Asthmatic Patients

et al. 2014

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[Purpose] The purpose of our study was to investigate the effect of different positions on pulmonary function test (PFT) values such as forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) of asthmatic patients .[Subjects and Methods] Thirty subjects with severe asthma aged between 20–39 years were enrolled after they had signed a written consent. Subjects were selected using the inclusion criteria, and PFT were randomly administered. Spirometer measurements (FVC, FEV1) were taken in the supine, side lying on right, side lying on left, sitting and standing positions. Each measurement was taken three times, and the average values were analyzed. [Results] One- way analysis of variance (ANOVA) and Tukey’s Test (post hoc) for pair- wise comparison indicated that there was a significant difference in the FEV1 values of the asthmatic patients however a significant difference was obtained between standing and supine positions. There was also a significant difference in the FVC values between the standing and supine lying position in the pair -wise comparison. [Conclusion] This study showed standing is the best position for measuring FEV1 and FVC of asthmatic subjects. The more upright the position, the higher the FEV1 and FVC will be.

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Section: Introductionmentioning

confidence: 99%

Effect of Different Positions on FVC and FEV<sub>1</sub> Measurements of Asthmatic Patients

et al. 2014

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“…The respiratory system is no exception, particularly the lungs. This is reflected in preferential perfusion of the lowermost portions of the lung, hence the altered ventilation-perfusion ratio 1) . So we pose the question: does the influence of gravitational force also affect ventilatory muscle performance?…”

Section: Introductionmentioning

confidence: 99%

Effect of Posture on Ventilatory Muscle Strength.

Ogiwara

Miyachi

2002

J Phys Ther Sci

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“…Immobilization can result in pulmonary, hematological, renal, and integumentary system complications. [1][2][3][4][5][6][7] Changes of body position for patients with SCI are necessary to prevent many of these comorbidities. Various techniques exist to prevent complications due to immobilization, but these techniques should not cause the injured spinal segments to move.…”

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confidence: 99%

Log-rolling technique producing unacceptable motion during body position changes in patients with traumatic spinal cord injury

Conrad

Horodyski

Wright

et al. 2007

SPI

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Object The purpose of the present study was to compare spinal motion generated during log-rolling and kinetic therapy with that generated when using a kinetic treatment table (KTT). The authors' hypothesis was that the KTT would produce less spinal motion while maintaining the benefits of body position changes. Methods Cervical and lumbar instability was created in three fresh, unembalmed cadavers. Electromagnetic sensors were fixed to the C5–6 and T12–L2 segments to measure cervical and lumbar spine segmental motion. Body position changes were performed using the traditional log-roll method and a KTT. Spinal motion was measured during each maneuver. Turning the cadaveric specimens on the KTT bed caused significantly less cervical motion than the log-roll technique as measured in flexion and axial rotation. The log-roll technique caused significantly greater cervical motion during body position changes than turning using the KTT. Conclusions Although the global instability will require surgical stabilization, consideration should be given to initial immobilization on a KTT to decrease the likelihood of secondary injury.

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Effects of Changing Body Position upon Improved Ventilation-Perfusion Relationships

Cited by 17 publications

References 0 publications

Effect of Different Positions on FVC and FEV<sub>1</sub> Measurements of Asthmatic Patients

Effect of Different Positions on FVC and FEV<sub>1</sub> Measurements of Asthmatic Patients

Effect of Posture on Ventilatory Muscle Strength.

Log-rolling technique producing unacceptable motion during body position changes in patients with traumatic spinal cord injury

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