Pressure Relief System for Preventing Pressure Ulcers

用于预防压疮的泄压系统

• 批准号: 7005936
• 负责人: MOHSEN MAKHSOUS
• 金额: $ 4.9万
• 依托单位: REHABILITATION INSTITUTE OF CHICAGO D/B/A SHIRLEY RYAN ABILITYLAB
• 依托单位国家: 美国
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-12-01 至 2006-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7005936
• 关键词: Pressure; Relief; System; Preventing; Ulcers

DESCRIPTION (provided by applicant): Prolonged sitting without proper repositioning in a wheelchair results in excessive pressure over the ischial tuberosities and coccyx significantly increasing the risk of pressure ulcers (PU), which impose a tremendous burden in terms of cost and the quality of life and the functional activities of the long-term wheelchair-bound population. Unrelieved pressure has been identified as the major etiological factor of developing PU for long-term care residents. We propose to evaluate a new seat design for wheelchair, in which the back part of the seat can be dynamically tilted downward with respect to the front part of the seat to be able to release the sitting interface pressure over the ischium. The mechanism introduces a novel concept in controlled sitting and has been demonstrated the capability to largely release the sitting interface pressure under the ischium and promote tissue viability. Therefore, we plan to evaluate this sitting mechanism in reducing the PU risk and accelerating PU healing rate in wheelchair-bound spinal cord injury (SCI) patients. In the long run, we expect it to help increase the quality of the life and promote functional status for long time wheelchair users. Specific aim 1: To evaluate sitting interface pressure distributions between the buttock-thighs and seat, between the back and backrest, and the load shift on the seat and back, during sitting in the proposed wheelchair and compare with those of usual wheelchair sitting. Specific aim 2: To evaluate tissue viability by way of measuring tissue perfusion and skin temperature changes during sitting with wheelchair equipped with the proposed mechanism and compare with those of usual wheelchair sitting plus clinically recommended Push-up regimen. Research for specific aim 1 and 2 will be carried out on 2 groups of wheelchair users with SCI, chronic and acute. Specific aim 3: To evaluate PU healing rate when using wheelchair equipped with the proposed mechanism and compare with those of usual wheelchair sitting plus push-ups. A group of wheelchair users with SCI who have PU developed in sitting area will be included. A 4-week PU healing process evaluation will be carried out when using the proposed sitting mechanism and comparing that with a controlled group of similar patients using regular wheelchair. Specific aim 4." To evaluate the preferences in sitting posture when sitting with wheelchair equipped with the proposed mechanism versus sitting in the usual posture plus clinically recommended Push-up regimen. All patients included in the above studies will be asked to complete a questionnaire for subjective evaluation about the comfort and tolerance related sitting in the proposed mechanism and compare it with the usual wheelchair

描述（由申请人提供）：长时间坐在轮椅上而没有适当的重新定位会导致坐骨结节和尾骨承受过大的压力，显著增加压疮（PU）的风险，这对长期坐轮椅的人群在成本、生活质量和功能活动方面造成了巨大的负担。未缓解的压力已被确定为长期护理居民发生PU的主要病因。我们建议评估一种新的轮椅座椅设计，在这种设计中，座椅的后部可以相对于座椅的前部动态向下倾斜，从而能够释放坐骨上的坐界面压力。该机制在控制坐姿中引入了一个新概念，并已被证明能够在很大程度上释放坐骨下的坐姿界面压力并促进组织活力。因此，我们计划评估这种坐位机制在降低轮椅脊髓损伤（SCI）患者PU风险和加速PU愈合方面的作用。从长远来看，我们希望它能帮助提高长期轮椅使用者的生活质量，改善他们的功能状况。