The role of lumbar sympathectomy in the treatment of limb ischemia secondary to arteriosclerosis obliterans has been controversial. Increased temperature and rubor of the skin, which usually follow sympathectomy, have generally been interpreted as indicative of improved nutritive skin blood flow. However, the existence of a (nonnutritive) thermoregulatory level of skin microcirculation makes such an extrapolation questionable.
These results indicate that in case of lower limb ischemia, sympathectomy improves skin blood flow at the thermoregulatory but not the nutritive level of skin microcirculation. This may be related to the fact that the thermoregulatory vessels are mainly sympathetically controlled, whereas the nutritive capillaries are mainly controlled by local (nonneural) factors.
François M.H. van Dielen1, Harrie A.J.M. Kurvers1, Ruben Dammers1, Mirjam G.A. oude Egbrink2, Dick W. Slaaf3, Jan H.M. Tordoir1 and Peter J.E.H.M. Kitslaar1
(1) | Department of General Surgery, Cardiovascular Research Institute Maastricht and University Hospital Maastricht, PO Box 5800, 6202 AZ Maastricht, The Netherlands, NL |
(2) | Department of Physiology, Cardiovascular Research Institute Maastricht, PO Box 616, 6200 MD Maastricht, The Netherlands, NL |
(3) | Department of Biophysics, Cardiovascular Research Institute Maastricht, PO Box 616, 6200 MD Maastricht, The Netherlands, NL |