Key result
Interruption of the sympathetic pathway blocked reflex venoconstriction in isolated forearm veins, indicating that neurogenic venomotor reactions may be significant in circulatory adjustments.
Why the study?
Can reflex venoconstriction in isolated forearm veins be blocked by interruption of the sympathetic pathway in humans?
Population
Humans
Comparison
Temporary isolation of a forearm vein segment… vs Interruption of the sympathetic pathway to the…
Design
Other
Authors
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No immediate practice change; hypothesis-generating for sympathetic venomotor control in circulatory research.
Can reflex venoconstriction in isolated forearm veins be blocked by interruption of the sympathetic pathway in humans?
This physiological study demonstrates that neurogenic venomotor reactions are mediated by sympathetic pathways and may play a significant role in circulatory adjustments.
Duggan et al. (1953) studied this question. Sympathetic pathway interruption was evaluated on Reflex venoconstriction (change in venous tone). Interruption of the sympathetic pathway blocked reflex venoconstriction in isolated forearm veins, indicating that neurogenic venomotor reactions may be significant in circulatory adjustments.
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