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PubMed · 9329997

Arterial cannulation: how to do it.

J S Anderson
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Abstract

The use of arterial lines is now common in the care of critically ill patients. Intra-arterial cannulation with continuous blood pressure transduction and display remains the accepted standard for comprehensive arterial blood pressure monitoring. This article will illustrate a technique for percutaneous radial artery cannulation as well as outlining the indications, contraindications and possible complications of arterial cannulation.

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Anesthetics, IntravenousCatheterization, PeripheralContraindicationsCritical CareHumansRadial ArteryRisk FactorsJournal Article

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J S Anderson. Arterial cannulation: how to do it.. https://pubmed.ncbi.nlm.nih.gov/9329997/

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PubMed2006

Thin-fiber mechanoreceptors reflexly increase renal sympathetic nerve activity during static contraction.

The renal vasoconstriction induced by the sympathetic outflow during exercise serves to direct blood flow from the kidney toward the exercising muscles. The renal circulation seems to be particularly important in this regard, because it receives a substantial part of the cardiac output, which in resting humans has been estimated to be 20%. The role of group III mechanoreceptors in causing the reflex renal sympathetic response to static contraction remains an open question. To shed some light on this question, we recorded the renal sympathetic nerve responses to static contraction before and after injection of gadolinium into the arterial supply of the statically contracting triceps surae muscles of decerebrate unanesthetized and chloralose-anesthetized cats. Gadolinium has been shown to be a selective blocker of mechanogated channels in thin-fiber muscle afferents, which comprise the afferent arm of the exercise pressor reflex arc. In decerebrate (n = 15) and chloralose-anesthetized (n = 12) cats, we found that gadolinium (10 mM; 1 ml) significantly attenuated the renal sympathetic nerve and pressor responses to static contraction (60 s) after a latent period of 60 min; both responses recovered after a latent period of 120 min. We conclude that thin-fiber mechanoreceptors supplying contracting muscle are involved in some of the renal vasoconstriction evoked by the exercise pressor reflex.

Anesthetics, Intravenous↗