Key result
Intranasal cocaine caused a sustained 2.4-fold increase in skin sympathetic nerve activity compared to lidocaine, demonstrating stimulation of central sympathetic outflow.
Why the study?
Does intranasal cocaine stimulate the cardiovascular system by increasing central sympathetic outflow or decreasing parasympathetic control in healthy humans?
Does intranasal cocaine stimulate the cardiovascular system by increasing central sympathetic outflow or decreasing parasympathetic control in healthy humans?
Effect estimate: 2.4-fold sustained increase
Intranasal cocaine stimulates the cardiovascular system via central sympathetic activation, leading to peripheral vasoconstriction and tachycardia.
No takes yet. Share an insight, caveat, or question.
Intranasal cocaine may drive cardiovascular effects via central sympathetic activation in healthy subjects; leaves open its contribution to toxicity and requires confirmation.
Vongpatanasin et al. (1999) studied Healthy cocaine-naive humans (n=25). Intranasal cocaine vs. Intranasal lidocaine was evaluated on skin sympathetic nerve activity (SNA) (2.4-fold sustained increase). Intranasal cocaine caused a sustained 2.4-fold increase in skin sympathetic nerve activity compared to lidocaine, demonstrating stimulation of central sympathetic outflow.
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