Author/Authors :
Leilnahari، Karim نويسنده Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran , , Ghasemi Bahraseman، Hamidreza نويسنده Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran , , Sadeghy، Mostafa نويسنده Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran ,
Abstract :
The aim of this study was to assess arm positioning pillow to prevent waking paresthesia symptoms related to side sleepers arms. This problem resulted from pressure of head weight on arm. This pressure obstructs the blood flow to nerve fibers in some part of anatomy. The ergonomic arm positioning pillow includes an upper portion having a top part for supporting the head of a sleeper and a bottom part having a space to protect the arm from head weight pressure. Blood’s volumetric flow of brachial artery was measured by echo-Doppler imaging while the subjects slept on their arms (stage 1) and next stage was with applying arm-positioning pillow (stage 2) for 16 healthy subjects. When head pressure was considered (stage 1), the measured blood volumetric flow of brachial artery was lower on average by 77.25% than the case in which the subjects applied an arm positioning pillow (stage 2). Despite the use of a simplified model of an arm positioning pillow, releasing from head weight pressure and subsequent paresthesia symptoms was achieved for side sleepers arms considering of the elimination of arm’s blood flow reduction.
