The ability of hypoosmotic solution, prostaglandin E1 (PGE1) and clonidine to influence intraocular pressure (IOP) by a central mechanism was studied using the technique of ventriculocisternal perfusion in conscious rabbits. IOP remained unchanged during the perfusion of 150 mOsm artificial cerebrospinal fluid. IOP rapidly increased by 15 mmHg during the perfusion of PGE1 at the dose of 1 or 3 ...

BACKGROUND AND OBJECTIVES Clonidine is added to intrathecal local anesthetics to improve intraoperative analgesia and to increase the duration of sensory and motor block. The aim of this systematic review is to quantify beneficial and harmful effects of clonidine when used as an adjuvant to intrathecal local anesthetics for surgery. METHODS We included data from 22 randomized trials (1,445 pa...

BACKGROUND AND OBJECTIVES Clonidine and dexmedetomidine are alpha2-adrenergic agonists with analgesic proprieties which potentiate local anesthetic effects when epidurally administered. The goal of this study was to evaluate the analgesia and sedation promoted by clonidine or dexmedetomidine associated to epidural ropivacaine, in the postoperative period of subcostal cholecystectomy. METHODS ...

BACKGROUND Through their action on the locus coeruleus, alpha2-adrenoceptor agonists induce rapidly reversible sedation while partially preserving cognitive brain functions. Our goal in this observational study was to map brain regions whose activity is modified by clonidine infusion so as to better understand its loci of action, especially in relation to sedation. METHODS Six ASA I-II right-...

UNLABELLED This work provides results of therapeutic efficacy testing and clonidine toleration in moderating of perioperative tachicardia and hypertension, as well as reducing the needs for anaestathic drugs, thus providing better patients' cardiovascular stability. MATERIAL AND METHODS The study involved 60 patients, that were subdued to elective non-cardiosurgical operations in general anae...

Clonidine is a centrally acting, -2 adrenergic agonist used for the treatment of hypertension during pregnancy. The metabolic pathways of clonidine are poorly understood, and the quantitative contribution of specific human cytochrome P450 (P450) isoforms has not been systematically assessed. In this study, 17 cDNA-expressed P450 enzymes, in addition to pooled human liver microsomes, were evalua...

OBJECTIVE Clonidine, which inhibits locus coeruleus discharge, would seem for theoretical reasons to be a good antipanic drug. Panic disorder (PD) presents a heterogeneous cluster of symptoms and a classification based on subtypes has been suggested and the respiratory symptoms group appears as a distinct subtype. METHOD We report three cases of respiratory PD patients who were successfully t...

Most clinicians believe that clonidine has minimal abuse potential. Originally introduced as an antihypertensive agent in 1974, clonidine is inexpensive and has well-known and tolerable side effects. In recent years it has been used in a wide variety of clinical situations, including the treatment of opiate dependence and numerous psychiatric disorders in both adults and children. 1 Despite its...

background intentional lowering of blood pressure helps to produce a desirably clean surgical field. many drugs can be used to induce a hypotensive state, but due to their high potency and rapid effect, drugs that more easily and safely control the induction of hypotension are desirable. objectives to investigate the effects of premedication with oral clonidine on intraoperative bleeding and he...

We have examined the effects of intrathecal (i.t.) injection of the muscarinic acetylcholine receptor antagonist atropine on the clonidine-induced nociceptive effect in formalin-induced nociception in rats. The injection of 5% formalin into the hind paw caused biphasic nociceptive responses, and i.t. injection of clonidine inhibited both phases of the nociceptive response in a dose-dependent ma...