Five ulcer free tetraplegic subjects who are unable to do lift-offs were studied on four separate days on two types of wheelchair cushions to measure the pressures underneath the ischial tuberosities. Small electrical pressure transducers and a tape-recorder were utilised.
The average pressures on the ROHO and foam cushions were 71.5 and 105.4 mmHg respectively. The average time between push-ups greater than 1 second and greater than 5 seconds was 72.1 and 96.2 minutes. The average pressures and the time between push-ups was greatly in excess of the usually suggested skin care regime. The data would suggest that the relative importance of pressure and pressure relief in the aetiology of decubitus ulcers should be re-examined.
Bennett, L, Kavner, D, Lee, B Y & Trainor, E S (1979). Shear vs pressure as causative factors in skin blood flow occlusion. Arch. Phys. Med. Rehabil., 60, 309–314.
Bennett, L, Kavner, D, Lee, B Y, Trainor, E S & Lewis, J M (1981). Skin blood flow in seated geriatric patients. Arch. Phys. Med. Rehabil., 62, 392–398.
Brand, P W, Sabin, T D & Burke, J F (1981). Sensory denervation, final report, SRS Report N. RC-40-M, U.D. Dept. of H.E.W., Washington, D.C.
Daniel, R K, Priest, D L, Wheatley, D L (1981). Etiologic factors in pressure sores: an experimental model. Arch. Phys. Med. Rehabil., 60, 492–498.
Dinsdale, S M (1974). Decubitus ulcers: Role of pressure and friction in causation. Arch. Phys. Med. Rehabil., 55, 147–152.
Griffith, B H (1963). Advances in the treatment of decubitus ulcers. Surg. Clinic North America, 43, 245–260.
Kosiak, M (1959). Etiology and pathology of ischemic ulcers. Arch. Phys. Med. Rehabil., 40, 62–69.
Mooney, V, Einbund, J J, Rogers, J E & Stauffer, E S (1971). Comparison of pressure qualities in seat cushions. Bul. Pros. Res. BPR, 10-15, 129–143.
Newson, T P, Pearcy, M J & Rolf, R (1981). Skin surface PO2 measurement and effect of externally applied pressure. Arch. Phys. Med. Rehabil., 62, 390—392.
Patterson, R P & Fisher, S V (1980). Pressure and temperature patterns under the ischial tuberosities. Bul. Pros. Res. BPR, 17, 10–34.
Patterson, R P & Fisher, S V (1979). The accuracy of electrical transducers for the measures of pressures applied to the skin. IEEE transactions on BioMed Eng. BME, 26, 450–456.
Souther, S G, Carr, S D & Vistnes, L (1974). Wheelchair cushions to reduce pressure under bony prominences. Arch. Phys. Med. Rehabil., 55, 460–464.
This study was supported in part by grant 16-P-56810 (5-19) from the Office of Human Development, Department of Health and Human Services, Washington, D.C.
Assistant Professor, Department of Physical Medicine and Rehabilitation, St Paul-Ramsey Medical Center, St Paul, Minnesota 55101
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Fisher, S., Patterson, P. Long term pressure recordings under the ischial tuberosities of tetraplegics. Spinal Cord 21, 99–106 (1983). https://doi.org/10.1038/sc.1983.14
- Spinal cord injury
- Decubitus ulcers
- Pressure recordings
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