Why the study?
Does the sampling site affect the measured plasma concentration of catecholamines in patients with cirrhosis compared to controls?
Population
57 individuals, comprising 40 patients with cirrhosis and 17 controls.
Comparison
Blood sampling from artery, cubital vein, and… vs Healthy controls and different sampling sites.
Design
Case-control
Authors
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Venous sampling may underestimate arterial noradrenaline in cirrhosis; leaves open whether arterial measures improve prognostic assessment.
Does the sampling site affect the measured plasma concentration of catecholamines in patients with cirrhosis compared to controls?
Arterial sampling is crucial for accurately assessing circulating catecholamines, as peripheral venous samples may reflect local factors such as enhanced regional sympathetic nervous activity.
Henriksen et al. (1986) studied this question.
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