Hyperaemic changes in forearm skin perfusion and RBC concentration after increasing occlusion times
2010 (English)In: MICROVASCULAR RESEARCH, ISSN 0026-2862, Vol. 80, no 3, 412-416 p.Article in journal (Refereed) Published
Tissue occlusion and the hyperaemic response upon reperfusion can be used as a tool to assess microvascular function in various vascular diseases. Currently, laser Doppler flowmetry (LDF) is applied most often to measure hyperaemic responses. In this study, we have applied tissue viability imaging (TiVi) and LDF to measure the change in red blood cell concentration and perfusion in the skin after occlusions of the forearm with increasing duration. We have found that there is a strong correlation between the changes in perfusion and red blood cell (RBC) concentration during post-occlusive hyperaemia (perfusion: r = 0.80; RBC concentration: r = 0.94). This correlation increases with longer occlusion durations (1, 5 and 10 min). Furthermore, for both perfusion and RBC concentration, the maximum responses (perfusion: r(2) = 0.59; RBC concentration: r(2) = 0.78) and the recovery times (perfusion: r(2) = 0.62; RBC concentration: r(2) = 0.91) increase linearly with the duration of the occlusion. Maximum responses and recovery times were more reproducible for RBC concentration (as measured with TiVi) than for perfusion (as measured with LDF). These results show that perfusion and RBC concentration are related during post-occlusive hyperaemia and that TiVi can be used as a tool in the assessment of hyperaemic responses that has advantages in terms of reproducibility, sensitivity and ease of use.
Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam , 2010. Vol. 80, no 3, 412-416 p.
Occlusion, Hyperaemia, Laser Doppler, Tissue viability imaging, Perfusion, Red blood cell concentration, Polarisation light spectroscopy, Ischemia, Reperfusion
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-63383DOI: 10.1016/j.mvr.2010.07.008ISI: 000284678300016OAI: oai:DiVA.org:liu-63383DiVA: diva2:379173
Simon Farnebo, Johan Thorfinn, Joakim Henricson and Erik Tesselaar, Hyperaemic changes in forearm skin perfusion and RBC concentration after increasing occlusion times, 2010, MICROVASCULAR RESEARCH, (80), 3, 412-416.
Copyright: Elsevier Science B.V., Amsterdam