Allen V, Ryan D W, Murray A
Regional Medical Physics Department, Freeman Hospital, Newcastle upon Tyne.
Br J Clin Pract. 1994 May-Jun;48(3):125-9.
Four specialised air mattresses had interface pressure measured under six body sites prone to pressure sores in 10 subjects, supine and sitting. The mattresses were the Clinirest (SSI) and FirstStep (KCI) continuous airflow mattress overlays, and Airwave (Pegasus) and Nimbus (Huntleigh) alternating pressure air mattresses. On the mattress overlays, average supine interface pressures were 2.33 kPa (scapula), 4.15 kPa (elbow), 1.94 kPa (sacrum) and 2.79 kPa (buttock), although they were higher at the occiput (7.97 kPa) and heel (11.7 kPa). The alternating pressure air mattresses had an average minimum interface pressure close to zero for three sites, rising to 4.28 kPa under the heel. Average maximum interface pressures were 8.61 kPa (occiput), 5.21 kPa (scapula), 4.90 (elbow), 4.85 kPa (sacrum), 4.61 kPa (buttock) and 13.2 kPa (heel). No accepted scientific method exists for comparing the two types of mattress. Our data suggest a clinical benefit at the occiput and heel (supine) in using an alternating pressure air mattress and a benefit in using a continuous airflow mattress overlay at other sites.
在10名受试者仰卧和坐姿状态下，对四种专门的气垫床在六个易发生压疮的身体部位进行了界面压力测量。这些气垫床分别是Clinirest（SSI）和FirstStep（KCI）连续气流床垫罩，以及Airwave（Pegasus）和Nimbus（Huntleigh）交替压力气垫床。在床垫罩上，仰卧时的平均界面压力在肩胛处为2.33千帕，肘部为4.15千帕，骶骨处为1.94千帕，臀部为2.79千帕，不过在枕部（7.97千帕）和足跟部（11.7千帕）压力更高。交替压力气垫床在三个部位的平均最小界面压力接近零，足跟部的压力升至4.28千帕。平均最大界面压力在枕部为8.61千帕，肩胛处为5.21千帕，肘部为4.90千帕，骶骨处为4.85千帕，臀部为4.61千帕，足跟部为13.2千帕。目前不存在公认的科学方法来比较这两种类型的床垫。我们的数据表明，仰卧时在枕部和足跟部使用交替压力气垫床有临床益处，而在其他部位使用连续气流床垫罩有益处。
