Abstract:
UNLABELLED:The Meyer-Overton hypothesis predicts that the potency of conventional inhaled anesthetics correlates inversely with lipophilicity: minimum alveolar anesthetic concentration (MAC) x the olive oil/gas partition coefficient equals a constant of approximately 1.82 +/- 0.56 atm (mean +/- SD), whereas MAC x the octanol/gas partition coefficient equals a constant of approximately 2.55 +/- 0.65 atm. MAC is the minimum alveolar concentration of anesthetic required to eliminate movement in response to a noxious stimulus in 50% of subjects. Although MAC x the olive oil/gas partition coefficient also equals a constant for normal alkanols from methanol through octanol, the constant (0.156 +/- 0.072 atm) is one-tenth that found for conventional anesthetics, whereas the product for MAC x the octanol/gas partition coefficient (1.72 +/- 1.19) is similar to that for conventional anesthetics. These normal alkanols also have much greater affinities for water (saline/gas partition coefficients equaling 708 [octanol] to 3780 [methanol]) than do conventional anesthetics. In the present study, we examined whether fluorination lowers alkanol saline/gas partition coefficients (i.e., decreases polarity) while sustaining or increasing lipid/gas partition coefficients, and whether alkanols with lower saline/gas partition coefficients had products of MAC x olive oil or octanol/gas partition coefficients that approached or exceeded those of conventional anesthetics. Fluorination decreased saline/gas partition coefficients to as low as 0.60 +/- 0.08 (CF3[CF2]6CH2OH) and, as hypothesized, increased the product of MAC x the olive oil or octanol/gas partition coefficients to values equaling or exceeding those found for conventional anesthetics. We conclude that the greater potency of many alkanols (greater than would be predicted from conventional inhaled anesthetics and the Meyer-Overton hypothesis) is associated with their greater polarity. IMPLICATIONS:Inhaled anesthetic potency correlates with lipophilicity, but potency of common alkanols is greater than their lipophilicity indicates, in part because alkanols have a greater hydrophilicity--i.e., a greater polarity.
journal_name
Anesth Analgjournal_title
Anesthesia and analgesiaauthors
Eger EI 2nd,Ionescu P,Laster MJ,Gong D,Hudlicky T,Kendig JJ,Harris RA,Trudell JR,Pohorille Adoi
10.1097/00000539-199904000-00035subject
Has Abstractpub_date
1999-04-01 00:00:00pages
867-76issue
4eissn
0003-2999issn
1526-7598journal_volume
88pub_type
杂志文章abstract:BACKGROUND:Cannabinoid agonists induce norepinephrine release in central, spinal, and peripheral sites. Previous studies suggest an interaction between the cannabinoid and adrenergic systems on antinociception. In this study, we sought to verify whether the CB1 and CB2 cannabinoid receptor agonists anandamide and N-pal...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e3182707859
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:The wide need for analgesia, anesthesia, and sedation in children and the lack of pediatric labeling leads to widespread off-label use of medications for pain and sedation in children. Any attempt to address the lack of labeling will require national estimates of the numbers of children using each medication...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e31825b6fb2
更新日期:2012-11-01 00:00:00
abstract:UNLABELLED:One thousand questionnaires concerning the techniques and complications of intravenous regional anesthesia (IVRA) were sent to 900 American and 100 Canadian anesthesiologists. Of the 321 respondents, 86% perform IVRA regularly. A wide variation in device-related and clinical aspects was found, ranging from a...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199710000-00027
更新日期:1997-10-01 00:00:00
abstract:BACKGROUND:The efficiency of red blood cell collection during cell salvage is dictated by multiple variables, including suction pressure. In this study, we attempted to determine the influence of suction pressure on the efficiency of cell salvage and to identify methods for minimizing the impact of suction on salvaged ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000255208.96685.2e
更新日期:2007-03-01 00:00:00
abstract::We assessed the efficacy of patient-controlled analgesia (PCA) techniques for extended femoral nerve sheath block after total hip arthroplasty. Forty-five patients were divided into three groups of 15. Over 48 h, all patients received 0.125% bupivacaine with clonidine 1 microg/mL and sufentanil 0.1 microg/mL via a fem...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-200102000-00033
更新日期:2001-02-01 00:00:00
abstract:UNLABELLED:Intraoperative transesophageal echocardiography (TEE) is frequently used in children with congenital heart disease (CHD). Although transnasal TEE is being used in various settings in the adult population, there are no descriptions of its use intraoperatively in patients with CHD. This report describes the su...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000086729.89284.45
更新日期:2003-12-01 00:00:00
abstract::The onset and intensity of blockade of the lumbosacral dermatomes after epidural anesthesia with alkalinized lidocaine were investigated in a randomized, double-blind study in 26 patients. Control subjects (n = 13) received 20 mL of 1.37% lidocaine (1.5% lidocaine plus 1 mL saline per 10 mL lidocaine) with added 1:200...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1993-02-01 00:00:00
abstract:BACKGROUND:In this pilot study, we hypothesized that velocity parameters obtained from changes in clot amplitude (A) and clot elasticity (E) measured with thromboelastometry (ROTEM, Tem International GmbH, Munich, Germany) could improve detection of fibrinolysis in whole blood obtained from children undergoing surgery ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000000795
更新日期:2015-08-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200204000-00050
更新日期:2002-04-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199208000-00014
更新日期:1992-08-01 00:00:00
abstract:BACKGROUND:Previous modeling of the kinetics of uptake and elimination of anesthetic drugs from the site of action has used measures derived from the electroencephalogram. Such measures lag the current brain activity because of the time needed to acquire a signal sample and derive the measure. With a direct measure of ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e3182549490
更新日期:2012-09-01 00:00:00
abstract:UNLABELLED:A synergistic effect of nonselective cyclooxygenase (COX) inhibitors on morphine-induced decrease of isoflurane minimum alveolar concentration (MAC(ISO)) has been observed in the rat. We studied the influence of specific COX-2 inhibitors on this decrease of MAC. Sixty-four female rats were anesthetized with ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000097849.18820.c4
更新日期:2004-02-01 00:00:00
abstract:BACKGROUND:Anesthesiologists may contribute to postoperative infections by means of the transmission of blood and pathogens to the patient and the environment in the operating room (OR). Our primary aims were to determine whether contamination of the IV hub, the anesthesia work area, and the patient could be reduced af...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0000000000000854
更新日期:2015-11-01 00:00:00
abstract::The purpose of this study was to measure and compare the relationship of cardiovascular depression and dose during equal potent levels of halothane and isoflurane anesthesia in neonates (n = 19) (16.7 +/- 6.9 days) and infants (n = 54) (6.1 +/- 3.1 mo). Seventy-three children had heart rate, arterial blood pressure, a...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1213/00000539-199203000-00003
更新日期:1992-03-01 00:00:00
abstract::Adverse reactions to volatile anesthetics and depolarizing muscle relaxants can occur in patients with Duchenne muscular dystrophy (DMD) resulting in acute rhabdomyolysis and hyperkalemia. We report a case of hyperkalemic cardiac arrest after cardiac surgery using cardiopulmonary bypass in a child with unsuspected DMD...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ANE.0000146533.21771.2F
更新日期:2005-03-01 00:00:00
abstract:UNLABELLED:Intrathecal (IT) sufentanil provides effective analgesia for extracorporeal shock wave lithotripsy. However, the optimal dose of sufentanil has not been established. We designed a prospective, randomized, double-blinded study to determine the optimal dose of IT sufentanil. Sixty men were randomized to receiv...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-199910000-00013
更新日期:1999-10-01 00:00:00
abstract:PURPOSE:Some severe complications during percutaneous dilatational tracheostomy (PDT) may be related to poor visualization of tracheal structures. Subjectively, the bronchoscopical view obtained via a laryngeal mask airway (LMA) seems to be better than that obtained with an endotracheal tube (ETT). In this prospective,...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0b013e3181d27fb4
更新日期:2010-04-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
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更新日期:2019-07-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章,多中心研究
doi:10.1213/ANE.0000000000002642
更新日期:2018-02-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1989-03-01 00:00:00
abstract::Multiple logistic regression studies frequently are performed with duration (e.g., operative time) included as an independent variable. We use narrative review of the statistical literature to highlight that when the association between duration and outcome is presumptively significant, the procedure itself (e.g., vid...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,评审
doi:10.1213/ANE.0b013e318229d450
更新日期:2011-11-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章,评审
doi:10.1213/01.ane.0000267260.00384.d9
更新日期:2007-08-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000004206
更新日期:2020-08-01 00:00:00
abstract:UNLABELLED:Numerous clinical studies suggest that methylprednisolone may facilitate early tracheal extubation after cardiac surgery, yet no investigation has rigorously examined the use of the drug in this setting. In this prospective, randomized, double-blind, placebo-controlled study, we examined the pulmonary effect...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-199807000-00007
更新日期:1998-07-01 00:00:00
abstract:UNLABELLED:Forty-eight healthy parturients scheduled for elective cesarean delivery were randomly allocated to receive intrathecally either 12 mg of hyperbaric bupivacaine plus 12.5 microg of fentanyl (n = 23) or bupivacaine alone (n = 25). In the latter group, IV 12.5 microg of fentanyl was administered immediately af...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-200207000-00037
更新日期:2002-07-01 00:00:00
abstract::The purpose of this study was to characterize the pharmacodynamics and pharmacokinetics of three concentrations of the new long-acting amide local anesthetic, ropivacaine, given epidurally in 15 physical status ASA I or II patients for elective lower-extremity orthopedic procedures using a nonrandomized open-label des...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199001000-00004
更新日期:1990-01-01 00:00:00
abstract:UNLABELLED:In adult patients, the creation of pneumoperitoneum (PP) by means of carbon dioxide (CO(2)) insufflation leads to an increase in cerebral blood flow velocity (CBFV), which is thought to be caused by hypercapnia. We evaluated whether PP leads to an increase of CBFV in children, and whether this increase is di...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200202000-00005
更新日期:2002-02-01 00:00:00
abstract::Tissue Doppler Imaging (TDI) provides information on systolic function through its systolic mitral annulus velocity wave (Sm), reflecting the peak velocity of shortening of the myocardial fibers oriented in the longitudinal direction. In this study, we evaluated the effect of load changes on Sm. Forty-two cardiac surg...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1213/01.ANE.0000131972.99804.28
更新日期:2004-08-01 00:00:00
abstract:BACKGROUND:Postoperative sore throat (POST) is not uncommon after general anesthesia with a supraglottic airway (SGA) device. Although it was reported that some pharmacological and nonpharmacological measures can reduce POST, because of limitations and variable success rates, we need to find a simpler and more effectiv...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/ANE.0000000000004664
更新日期:2020-12-01 00:00:00
abstract:BACKGROUND:Dexmedetomidine is a highly selective alpha(2)-agonist with hypnotic, analgesic, and anxiolytic properties. In adults, it provides sedation while preserving respiratory function facilitating extubation. Only limited pharmacokinetic data are available for pediatric patients. The primary aim of this study was ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0b013e3181d783c8
更新日期:2010-05-01 00:00:00