Microcirculation (New York, N.Y. : 1994) · 2017
Acute skin trauma induces hyperemia, but superficial papillary nutritive perfusion remains unchanged.
СтатьяНазвание и аннотация: Перевод в очереди
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Sundheim Liv Kristin, Sporastøyl Ane Halse, Wester Torjus, Salerud Göran, Kvernebo Knut
Аннотация
OBJECTIVES: Superficial skin papillary capillaries with blood supply from a superficial vascular plexus and regulated by local metabolic needs supply oxygen and nutrients for epithelial cell proliferation. A deep vascular plexus regulated by autonomous nerves serves body thermoregulation. In healthy volunteers, we assessed circulatory effects of a standardized skin trauma by CAVM, DRS, and LDPM to assess the measuring depth of the three techniques and to describe the acute trauma effects on nutritive and thermoregulatory perfusion.
METHODS: Volunteers (n=12) were examined at baseline and after induction of a 5.0 mm×1.0 mm incision on the forearm; 30 minutes after the trauma induction, data were collected at 0-1, 2-3 and 30 mm distances.
RESULTS: LDPM showed hyperemia at 2-3 mm distance (35.8±15.2 a.u.), but not at 30 mm distance (7.4±2.5 a.u.) compared to baseline (8.8±1.8 a.u.). The DRS saturation increased at 2-3 mm (71.2±4.8%), but not at 30 mm (49.8±7.9%) compared to baseline (45.8±7.4%). Capillary density and flow velocities were unaffected at all distances.
CONCLUSIONS: The results indicate that skin nutritive papillary capillary function can be assessed by CAVM and DRS, but not with LDPM because of its dependence of the deep plexus perfusion.
METHODS: Volunteers (n=12) were examined at baseline and after induction of a 5.0 mm×1.0 mm incision on the forearm; 30 minutes after the trauma induction, data were collected at 0-1, 2-3 and 30 mm distances.
RESULTS: LDPM showed hyperemia at 2-3 mm distance (35.8±15.2 a.u.), but not at 30 mm distance (7.4±2.5 a.u.) compared to baseline (8.8±1.8 a.u.). The DRS saturation increased at 2-3 mm (71.2±4.8%), but not at 30 mm (49.8±7.9%) compared to baseline (45.8±7.4%). Capillary density and flow velocities were unaffected at all distances.
CONCLUSIONS: The results indicate that skin nutritive papillary capillary function can be assessed by CAVM and DRS, but not with LDPM because of its dependence of the deep plexus perfusion.