A quantitative analysis of microcirculation in sore-prone pressure areas on conventional and pressure relief hospital mattresses using laser Doppler flowmetry and tissue spectrophotometry |
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| Institution: | 1. Department of Plastic, Reconstructive, Hand and Burn Surgery, BG-Trauma Center, Eberhard Karls University Tuebingen, Germany;2. Department of Plastic, Reconstructive and Hand Surgery, University Hospital, University of Berne, Inselspital, Switzerland;3. Department of Plastic, Hand, Reconstructive and Aesthetic Surgery, Helios Klinikum Wuppertal, University Witten/Herdecke, Germany;1. Department of Mechanical Engineering, Yazd University, Yazd, Iran;2. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran;1. National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo, Japan;2. Department of Otolaryngology-Head and Neck Surgery, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan;3. Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, Japan;4. Department of Otolaryngology, Ayabe City Hospital, 20-1 Ootsuka, Aono-cho, Ayabe, Kyoto, Japan;5. Wada Ear, Nose and Throat Clinic, 4-7-15 Komagawa, Higashisumiyosi-ku, Osaka, Japan |
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| Abstract: | BackgroundPressure ulcers are associated with severe impairment for the patients and high economic load. With this study we wanted to gain more insight to the skin perfusion dynamics due to external loading. Furthermore, we evaluated the effect of different types of pressure relief mattresses.MethodsA total of 25 healthy volunteers were enrolled in the study. Perfusion dynamics of the sacral and the heel area were assessed using the O2C-device, which combines a laser light, to determine blood flow, and white light to determine the relative amount of hemoglobin. Three mattresses were evaluated compared to a hard surface: a standard hospital foam mattress bed, a visco-elastic foam mattress, and an air-fluidized bed.ResultsIn the heel area, only the air-fluidized bed was able to maintain the blood circulation (mean blood flow of 13.6 ± 6 versus 3.9 ± 3 AU and mean relative amount of hemoglobin of 44.0 ± 14 versus 32.7 ± 12 AU.) In the sacral area, all used mattresses revealed an improvement of blood circulation compared to the hard surface.ConclusionThe results of this study form a more precise pattern of perfusion changes due to external loading on various pressure relief mattresses. This knowledge may reduce the incidence of pressure ulcers and may be an influencing factor in pressure relief mattress selection. |
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| Keywords: | Laser Doppler flowmetrie Pressure sore Tissue spectrophotometry Pressure relief mattress |
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