| Alleviation of the peripheral hemodynamic effects of dexmedetomidine by the calcium channel blocker isradipine. | |
| | |
MedLine Citation:
|
PMID: 9113181 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: Alpha 2-adrenergic agonists have peripheral vasoconstrictive effects and central sympatholytic and sedative effects. Whereas the latter are the basis of their use in anesthesia, the former could limit their clinical application. METHODS: To study whether a vasodilator could alleviate the systemic and coronary vasoconstrictor effects of dexmedetomidine without influencing the central sympatholytic effects, the calcium channel blocker isradipine was infused after a high dose of dexmedetomidine in anesthetized dogs. RESULTS: Dexmedetomidine 10 micrograms.kg-1 decreased plasma concentrations of norepinephrine and epinephrine by more than 90%, heart rate by 39%, cardiac output by 64%, dp/dtmax by 29% and increased mean arterial pressure by 55% and the left ventricular end-diastolic pressure (LVEDP) 4-fold as compared to baseline. In addition, coronary blood flow decreased by 52% and coronary venous oxygen saturation by 51%. Isradipine could completely antagonize all the coronary and systemic hemodynamic changes induced by dexmedetomidine, but only partially he increase in LVEDP. Isradipine caused no changes in plasma catecholamine levels. CONCLUSION: Isradipine could alleviate the peripheral hemodynamic actions of dexmedetomidine while having no effect on its central sympatholytic properties. |
| | |
Authors:
|
P M Roekaerts; C J Lawrence; F W Prinzen; S de Lange |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Acta anaesthesiologica Scandinavica Volume: 41 ISSN: 0001-5172 ISO Abbreviation: Acta Anaesthesiol Scand Publication Date: 1997 Mar |
Date Detail:
|
Created Date: 1997-06-27 Completed Date: 1997-06-27 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 0370270 Medline TA: Acta Anaesthesiol Scand Country: DENMARK |
Other Details:
|
Languages: eng Pagination: 364-70 Citation Subset: IM |
Affiliation:
|
Department of Anesthesiology, University Hospital of Maarstricht, The Nederlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adrenergic alpha-Agonists
/
pharmacology* Analgesics, Non-Narcotic / pharmacology* Anesthesia Anesthetics, Inhalation Animals Blood Pressure / drug effects Calcium Channel Blockers / pharmacology* Cardiac Output / drug effects Catecholamines / blood Coronary Circulation / drug effects Dogs Halothane Heart Rate / drug effects Hemodynamics / drug effects* Imidazoles / pharmacology* Isradipine / pharmacology* Medetomidine Vasodilator Agents / pharmacology |
| Chemical | |
Reg. No./Substance:
|
0/Adrenergic alpha-Agonists; 0/Analgesics, Non-Narcotic; 0/Anesthetics, Inhalation; 0/Calcium Channel Blockers; 0/Catecholamines; 0/Imidazoles; 0/Vasodilator Agents; 151-67-7/Halothane; 75695-93-1/Isradipine; 86347-14-0/Medetomidine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Recovery and outcome after propofol and isoflurane anesthesia in patients undergoing laparoscopic hy...
Next Document: Effect of esmolol on the heart rate, arterial pressure and electrocardiographic changes during laryn...