Abstract:
UNLABELLED:Repetitive transient ischemic depolarizations (IDs) during focal cerebral ischemia are thought to contribute to ischemic damage. Isoflurane and pentobarbital reduce injury (versus the nonanesthetized state) after focal cerebral ischemia. The mechanism by which these drugs reduce injury is not known. This protective effect might be mediated by a reduction in the number of IDs. We measured the frequency of IDs during focal cerebral ischemia in animals anesthetized with isoflurane or pentobarbital and compared it with that in N2O/fentanyl anesthetized animals and in animals in which the N-methyl-D-aspartate receptor antagonist MK801 (dizocilpine) was given. Focal cerebral ischemia was induced by the occlusion of the middle cerebral artery for a period of 2 h. Cortical infarct volumes were determined after 3 h of reperfusion by image analysis of 2,3,5-triphenyl tetrazolium-stained coronal brain sections. The infarct volume was significantly greater in the N2O/fentanyl group than in the other three groups. Infarct volumes in the isoflurane, pentobarbital, and MK801 groups were similar. The frequency of IDs was significantly greater in the N2O/fentanyl group than in the other three groups, and was the least in the MK801 group. There was a direct correlation between the number of IDs and the volume of tissue injury. The data indicate that the protective effect of isoflurane and pentobarbital might, in part, be determined by their ability to reduce IDs during focal ischemia. However, the observation that the infarct volume was similar in the MK801, isoflurane, and pentobarbital groups, despite a greater frequency of IDs in the latter two groups, suggests that mechanisms other than a simple reduction in the number of IDs probably also play a role in anesthetic-mediated cerebral protection. IMPLICATIONS:Transient ischemic depolarizations during focal ischemia contribute to brain injury. Both isoflurane and pentobarbital reduced the frequency of these depolarizations. Isoflurane- and pentobarbital-mediated reduction in the frequency of depolarizations might, in part, mediate the previously documented neuroprotective effect of these drugs.
journal_name
Anesth Analgjournal_title
Anesthesia and analgesiaauthors
Patel PM,Drummond JC,Cole DJ,Kelly PJ,Watson Mdoi
10.1097/00000539-199804000-00018subject
Has Abstractpub_date
1998-04-01 00:00:00pages
773-80issue
4eissn
0003-2999issn
1526-7598journal_volume
86pub_type
杂志文章abstract::We compared in a prospective, randomized, double-blinded study the analgesic efficacy of three drugs in 120 ASA I and II patients scheduled to undergo ambulatory hand surgery with IV regional anesthesia. At discharge, oral analgesic tablets were prescribed as follows: tramadol 100 mg every 6 h, metamizol 1 g every 6 h...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-200102000-00013
更新日期:2001-02-01 00:00:00
abstract:UNLABELLED:We investigated halothane's effects on the function of L-type Ca2+ channels in a human neuronal cell line, SH-SY5Y, by using the cell-attached patch voltage clamp configuration and Ba2+ as the charge carrier. In multiple-channel patches, halothane decreased the peak and persistent Ba2+ currents, accelerated ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199804000-00038
更新日期:1998-04-01 00:00:00
abstract::Clonidine in spinal and epidural blocks prolongs anesthesia, but can cause hypotension and bradycardia. The aim of our study was to compare hemodynamic and analgesic effects of spinal versus epidural clonidine alone and after repetitive dosing. In a prospective, randomized, double-blind study, we evaluated 40 patients...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-199502000-00020
更新日期:1995-02-01 00:00:00
abstract::In a randomized, double-blind, placebo-controlled trial, we evaluated the use of preoperative local anesthesia with regard to postoperative pain. Before surgery in 66 patients scheduled for cholecystectomy, the abdominal wall along the proposed line of incision was infiltrated with 70 mL of 0.25% ropivacaine, 70 mL of...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1213/00000539-199402000-00003
更新日期:1994-02-01 00:00:00
abstract:BACKGROUND:The etiology of postoperative cognitive decline (POCD) remains to be determined. Anesthetic isoflurane, but not desflurane, may induce neurotoxicity. However, the functional consequences of these effects have not been assessed. We therefore performed a pilot study to determine the effects of isoflurane and d...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1213/ANE.0b013e31823b2602
更新日期:2012-02-01 00:00:00
abstract:UNLABELLED:Because inhibition of voltage-dependent Ca(2+) channels can be a mechanism underlying general anesthesia, we examined sensitivities to propofol and halothane in mice lacking the R-type (Ca(v)2.3) channel widely expressed in neurons. Sleep time after propofol injection (26 mg/kg IV) and halothane MAC(RR) and ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000065548.83253.5c
更新日期:2003-07-01 00:00:00
abstract:BACKGROUND:Although invasive monitoring is the standard method for intracranial pressure (ICP) measurement, it is not without potential for serious complications. Noninvasive methods have been proposed as alternatives to invasive ICP monitoring. The study aimed to investigate the diagnostic accuracy of the currently av...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000005189
更新日期:2020-09-24 00:00:00
abstract::Alfentanil, a short-acting lipophilic opioid, is used for labor analgesia and cesarean section and may cause neonatal depression. However, direct placental alfentanil transfer has not been studied. We measured placental alfentanil transfer and uptake during in vitro perfusion. Placenta lobules from healthy parturients...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199412000-00011
更新日期:1994-12-01 00:00:00
abstract:UNLABELLED:We investigated the effect of IV droperidol on the bispectral index (BIS) in conscious and propofol-sedated patients during spinal anesthesia. Thirty minutes after the induction of spinal anesthesia, 20 patients were given 2 mg of droperidol IV without administration of other sedatives (conscious group). Ano...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1213/01.ane.0000048517.98692.53
更新日期:2003-03-01 00:00:00
abstract:UNLABELLED:The aim of this study was to examine the antiallodynic and antinociceptive effects of subcutaneously administered physostigmine (50, 100, 200 micrograms/kg), compared with morphine (2.5, 5, 10 mg/kg) and NaCl after spinal nerve ligation in rats. The following stimuli were used: acetone (cold allodynia), von ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199908000-00033
更新日期:1999-08-01 00:00:00
abstract::Animal studies suggest that increased circulating estrogen and progesterone, and activation of the endorphin system cause prenancy-induced antinociceptive effects. Human studies have provided inconsistent results and have often lacked a nonpregnant control group. In this study, we compared sensitivity to experimental ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000239224.48719.28
更新日期:2006-11-01 00:00:00
abstract::The purpose of this study was to compare the psychological effects of ketamine and thiopental anesthesia. In a double-blind comparison, 20 normal female volunteers were given 2.5 mg/kg ketamine intravenously and 20 were given 5.0 mg/kg thiopental intravenously. Subjects were assessed with a variety of objective and su...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:
更新日期:1984-12-01 00:00:00
abstract:BACKGROUND:Intraoperative hypoglycemia can result in devastating neurologic injury if not promptly diagnosed and treated. Few studies have defined risk factors for intraoperative hypoglycemia. The authors sought to characterize children with intraoperative hypoglycemia and determine independent risk factors in a multic...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000004979
更新日期:2020-06-25 00:00:00
abstract::Spontaneous ventilation may offer advantages over controlled mechanical ventilation (CMV), but increase in work of breathing may diminish its usefulness. During general anesthesia, respiratory depression and increased work of breathing often preclude spontaneous ventilation, and patients then receive CMV. We compared ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199208000-00003
更新日期:1992-08-01 00:00:00
abstract:BACKGROUND:Xenon has many characteristics that make it very attractive as an anesthetic and therapeutic drug. Unfortunately, the supply of xenon is fixed, and therefore reclamation and recovery from even the most efficient breathing circuits is desirable. We built and evaluated a cryogenic device to recover xenon from ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000278148.56305.72
更新日期:2007-11-01 00:00:00
abstract:BACKGROUND:Propofol can be measured in exhaled gas. Exhaled and plasma propofol concentrations correlate well, but the relationship with tissue concentrations remains unknown. We thus evaluated the relationship between exhaled, plasma, and various tissue propofol concentrations. Because the drug acts in the brain, we f...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000004701
更新日期:2021-01-01 00:00:00
abstract:BACKGROUND:IV lipid emulsion has demonstrated to be effective therapy for bupivacaine-induced cardiotoxicity. However, the role of epinephrine when coadministered with lipid emulsion in toxin-induced cardiac arrest is unclear. We postulated superior resuscitation outcome in the absence of epinephrine in a rabbit model ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e3181e66050
更新日期:2010-09-01 00:00:00
abstract::Combinations of nonsteroidal antiinflammatory drugs (NSAIDs) and opioids are widespread in the management of pain, allowing better analgesia with reduced side effects. Cannabinoids are promising analgesic drugs that have pharmacological properties similar to those of opioids. However, the beneficial effects of cannabi...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000194587.94260.1d
更新日期:2006-02-01 00:00:00
abstract:UNLABELLED:We studied 160 ASA I or II patients undergoing elective otolaryngologic surgery in order to compare the anxiolytic effects of a novel 5-hydroxytryptamine-1A agonist, tandospirone, with diazepam. To monitor preoperative anxiety, the following variables were used: systolic and diastolic arterial pressure, hear...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-200111000-00034
更新日期:2001-11-01 00:00:00
abstract:BACKGROUND:Both femoral and obturator nerve blocks have been suggested to be useful in relieving pain after total knee arthroplasty (TKA). We sought to compare their efficacy. METHODS:Sixty patients undergoing elective unilateral TKA under spinal anesthesia received in a randomized, double-blind manner a femoral, obtu...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/01.ane.0000278158.36843.f7
更新日期:2007-09-01 00:00:00
abstract:BACKGROUND:Atelectasis occurs regularly after induction of general anesthesia, persists postoperatively, and may contribute to significant postoperative morbidity and additional health care costs. Laparoscopic surgery has been reported to be associated with an increased incidence of postoperative atelectasis. It has be...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0b013e3181ba7945
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND:Anesthesia induction in children is frequently achieved by inhalation of nitrous oxide and sevoflurane. Pediatric anesthesiologists commonly use distraction techniques such as humor or nonprocedural talk to reduce anxiety and facilitate a smooth transition at this critical phase. There is a large body of suc...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0b013e31824d5224
更新日期:2012-11-01 00:00:00
abstract::Catecholamine and serotonin concentrations in the cord, medulla, and hypothalamus were measured in rats after saline, after sufentanil sufficient to reduce the minimum alveolar concentration (MAC) of halothane by 30% or less, or after sufentanil sufficient to reduce the MAC of halothane by 80% or more. In the cord, hi...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract::The extent of sensory and motor blockades was examined in 195 patients 5 and 20 min after four different techniques of brachial plexus block using 50 ml of 0.5% bupivacaine. The interscalene technique of Winnie (N = 50) resulted in a preferential blockade of the caudad portions of the cervical plexus and the cephalad ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1983-01-01 00:00:00
abstract::Continuous peripheral nerve blockade is often used for the management of postoperative pain, even in ambulatory patients. The reported incidence of infectious complications after continuous nerve blockade is low. We report a case of Staphylococcus aureus sepsis after total shoulder arthroplasty in a patient who presen...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e3181cf03b4
更新日期:2010-04-01 00:00:00
abstract:BACKGROUND:In this randomized study, we compared intrathecal (i.t.) morphine with or without clonidine and i.v. postoperative patient-controlled analgesia (PCA) morphine for analgesia after radical retropubic prostatectomy. METHODS:Fifty patients were randomly divided into three groups. They were allocated to receive ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ane.0b013e3181a30182
更新日期:2009-06-01 00:00:00
abstract::The role of succinylcholine in the precipitation of malignant hyperthermia (MH) necessitates the testing of new neuromuscular relaxants for their ability to trigger MH in MH-susceptible swine before general human use. We tested doxacurium and mivacurium, two new nondepolarizing bis-benzylisoquinolinium neuromuscular r...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199009000-00012
更新日期:1990-09-01 00:00:00
abstract::The low solubility of desflurane contributes to rapid emergence after outpatient anesthesia. Compared with isoflurane, recovery times to eye opening, response to verbal commands, and orientation to person, place, and time have been significantly shorter. Even when compared with the rapid, short-acting intravenous anes...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,评审
doi:
更新日期:1992-10-01 00:00:00
abstract:BACKGROUND:Surgical site infiltration with local anesthetic reduces analgesic requests in various types of surgeries. Because thyroid surgery may induce severe postoperative pain, we tested the hypothesis that ropivacaine surgical site infiltration would significantly decrease postoperative administration of morphine i...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0000000000001041
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:Conventional concept suggests that infused crystalloid fluid is first distributed in the plasma volume and then, since the capillary permeability for fluid is very high, almost instantly equilibrates with the extracellular fluid space. We challenge whether this view is consistent with findings based on volum...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1213/ane.0b013e31818c95e1
更新日期:2009-01-01 00:00:00