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Pulmonary function and posture in traumatic quadriplegia

J Ali1, W Qi

  • 1University of Toronto, Department of Surgery, Ontario, Canada.

The Journal of Trauma
|August 1, 1995
PubMed
Summary
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Optimal posture for traumatic quadriplegia improves pulmonary function. The 60- to 90-degree head-up positions maximize oxygenation and lung patency, while the horizontal or 35-degree head-up positions are best for physiotherapy.

Area of Science:

  • Pulmonary Medicine
  • Rehabilitation Medicine
  • Physiology

Background:

  • Traumatic quadriplegia significantly impacts respiratory function.
  • Understanding optimal positioning is crucial for managing pulmonary complications.

Purpose of the Study:

  • To identify the best body posture for improving pulmonary function in individuals with traumatic quadriplegia.
  • To compare lung function in quadriplegic patients versus healthy individuals across various positions.

Main Methods:

  • Compared lung function (Functional Residual Capacity - FRC, Forced Vital Capacity - FVC, arterial blood gases) in 8 traumatic quadriplegic patients and 8 healthy volunteers.
  • Measurements were taken in random positions: 20° head down, horizontal, 35°, 60°, and 90° head up.
  • All participants maintained each position for 15 minutes.

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Main Results:

  • Quadriplegic patients had lower FRC in all positions, but directional changes with posture were similar to controls.
  • FRC increased most in quadriplegics between 35° and 60° head up.
  • Quadriplegics showed decreased FVC from 35° to 60° head up, unlike controls.
  • Oxygenation (PO2) improved in quadriplegics from head down to horizontal and 60° head up positions.

Conclusions:

  • The 60° to 90° head-up positions optimize oxygenation and alveolar patency (FRC) in traumatic quadriplegia.
  • Horizontal or 35° head-up positions are optimal for physiotherapy, enhancing lung volumes (FVC) for deep breathing and coughing.
  • Posture-dependent changes in lung function are significant for optimizing respiratory care in quadriplegic patients.