Abstract:
UNLABELLED:The dose-response curve for the effect of volatile anesthetics on the somatosensory evoked potential (SEP) is well described, but for propofol, the large dose segment of the curve is undefined. We describe the effect of increasing plasma concentrations of propofol on cortical SEPs in 18 rats. After surgical preparation under ketamine anesthesia, a remifentanil infusion was begun at 2.5, 5, or 10 microg x kg(-1) x min(-1). After 20 min, the propofol infusion was initiated at 20 mg x kg(-1) x h(-1) and was increased to 40, 60, and 80 mg x kg(-1) x h(-1) at 20-min intervals. SEP was recorded before remifentanil infusion, before propofol infusion rate changes, and 30 min after discontinuing propofol infusion. In six additional rats, the plasma concentrations of propofol after each 20-min infusion were measured using gas chromatography. Remifentanil did not have a significant effect, but propofol significantly depressed the SEP amplitude and prolonged the latency at infusion rates of 40 mg x kg(-1) x h(-1) and more. Propofol's effect was dose-dependent, but even at 80 mg x kg(-1) x h(-1) with an estimated plasma concentration of 31.6 +/- 3.4 microg/mL (10.8 50% effective concentration), a measurable response was present in 44.5% of rats. These results suggest that even at large doses, propofol and remifentanil provide adequate conditions for SEP monitoring. IMPLICATIONS:Rats demonstrate dose-dependent somatosensory evoked potential (SEP) suppression with propofol but not with remifentanil. However, SEP suppression by 50% occurred only at large (1.5 EC(50)) concentrations of propofol, and a measurable SEP was present in 8 of 18 rats, even at 10.8 EC(50).
journal_name
Anesth Analgjournal_title
Anesthesia and analgesiaauthors
Logginidou HG,Li BH,Li DP,Lohmann JS,Schuler HG,DiVittore NA,Kreiser S,Cronin AJdoi
10.1213/01.ane.0000090318.16879.a8subject
Has Abstractpub_date
2003-12-01 00:00:00pages
1784-8issue
6eissn
0003-2999issn
1526-7598journal_volume
97pub_type
杂志文章abstract::One approach to elucidating the general anesthetic target has used genetic selection procedures, wherein animals are bred for sensitivity or resistance to general anesthetics and correlations are sought with a specific neuronal structural or functional defect. For example, murine strains have been developed that are e...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199376060-00022
更新日期:1993-06-01 00:00:00
abstract::Although a rare complication of general anesthesia, unanticipated malignant hyperpyrexia requires a rapid, organized treatment plan. With the aid of a treatment protocol sheet and a compact drug and cooling package, treatment can be implemented quickly in each operating room. ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-197609000-00022
更新日期:1976-09-01 00:00:00
abstract::Monitoring with pulse oximetry might improve patient outcome by enabling an early diagnosis and, consequently, correction of perioperative events that might otherwise cause postoperative complications or even death. The aim of the study was to clarify the effect of perioperative monitoring with pulse oximetry and to i...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,meta分析
doi:10.1097/00000539-200302000-00024
更新日期:2003-02-01 00:00:00
abstract:BACKGROUND:Previously, our group successfully established one of the nation's first Perioperative Surgical Homes (PSHs) aimed at coordinating services to patients undergoing primary total hip arthroplasty (THA) and primary total knee arthroplasty (TKA). As we now focus on extending the PSH to other service lines within...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000001308
更新日期:2016-07-01 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:BACKGROUND:Functional blockade of peripheral nerves is the primary objective of local anesthesia, and it is often desirable to have a persistent blockade, sustained throughout and beyond a surgical procedure. Current local anesthetics give effective analgesia for <8-12 h after a single bolus injection. We report on an ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ane.0b013e318193596a
更新日期:2009-03-01 00:00:00
abstract::Fentanyl pharmacokinetics was compared in two groups of adult patients, one group (n = 5) aged less than 50 years, and one group (n = 4) aged greater than 60 years. Despite equivalent doses of fentanyl (10 microgram/kg IV), serum drug concentrations were significantly higher in the older patient group. This was reflec...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1982-12-01 00:00:00
abstract:UNLABELLED:There has been growing interest in determining the possible immune consequences of opioid administration for the management of postoperative pain. We studied the effects of morphine and tramadol on pain and immune function during the postoperative period in 30 patients undergoing abdominal surgery for uterin...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1097/00000539-200006000-00028
更新日期:2000-06-01 00:00:00
abstract::Spine surgery is associated with a wide range of surgical and anesthetic complications. Excessive cerebrospinal fluid leak can be a cause of cerebellar hemorrhage postoperatively. We report a 43-yr-old patient who had lumbar spine reexploration surgery complicated by a cerebrospinal fluid leak which led to cerebellar ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ANE.0000143340.51813.6A
更新日期:2005-02-01 00:00:00
abstract:UNLABELLED:We evaluated the blood-sparing effects of intraoperative moderate acute normovolemic hemodilution (ANH) combined with intraoperative tranexamic acid treatment and shed blood reinfusion in patients undergoing off-pump coronary artery bypass (OPCAB). One-hundred consecutive OPCAB patients (baseline hematocrit ...
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.0000113238.35409.fe
更新日期:2004-05-01 00:00:00
abstract:UNLABELLED:Perturbation of respiratory mechanics produced by general anesthesia and surgery is more pronounced in morbidly obese (MO) patients. Because general anesthesia induces pulmonary atelectasis in nonobese patients, we hypothesized that atelectasis formation would be particularly significant in MO patients. We i...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200212000-00060
更新日期:2002-12-01 00:00:00
abstract::The anesthetic propofol (2,6 diisopropylphenol) mediates some of its effects by activating inhibitory chloride currents in the lower brainstem and spinal cord. The effects comprise direct activation of gamma-aminobutyric acid-A and glycine receptors in the absence of the natural agonist, as well as potentiation of the...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000120083.10269.54
更新日期:2004-07-01 00:00:00
abstract:UNLABELLED:We evaluated in a qualitative systematic review the effect of N-methyl-D-aspartate (NMDA) receptor antagonists on reducing postoperative pain and analgesic consumption beyond the clinical duration of action of the target drug (preventive analgesia). Randomized trials examining the use of an NMDA antagonist i...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,评审
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更新日期:2004-05-01 00:00:00
abstract::The development of a technique for studying spinal dorsal horn electrophysiology in intact, awake, drug-free cats enables the study of spinal sites and mechanisms of action of anesthetic and analgesic agents in a system that more closely reflects normal physiology. Using this technique, we reevaluated the effect of ke...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1986-11-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000004108
更新日期:2019-09-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000296459.51820.64
更新日期:2008-01-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ANE.0000140247.16106.75
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:This study investigated the clinical performance of a model-based, patient-individualized closed-loop (CL) control system for propofol administration using the bispectral index (BIS) as a controlled variable during the induction and maintenance of anesthesia with propofol and remifentanil and studied the inf...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ANE.0000000000004208
更新日期:2020-06-01 00:00:00
abstract:UNLABELLED:Dichloroacetate (DCA) stimulates pyruvate dehydrogenase (PDH), accelerating recovery of the postischemic heart. Because DCA also stimulates hepatic PDH, it may facilitate graft recovery during liver transplantation (OLT). Hepatic removal and replacement during OLT produce major changes in O2 consumption (VO2...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00000539-199710000-00007
更新日期:1997-10-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 社论
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更新日期:2006-12-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199712000-00024
更新日期:1997-12-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ane.0000204258.00676.98
更新日期:2006-05-01 00:00:00
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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:UNLABELLED:We determined the effects of fentanyl, sufentanil, morphine, and meperidine on the spontaneous contractility of isolated human pregnant uterine muscle strips. Uterine specimens were obtained from normal full-term parturients undergoing elective lower-segment cesarean delivery. Longitudinal muscle strips were...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200104000-00037
更新日期:2001-04-01 00:00:00
abstract:UNLABELLED:Thiamylal, a chiral thiobarbiturate, is marketed as a racemic product. We studied the serum protein binding and microsomal metabolism of thiamylal enantiomers in vitro. The unbound fraction of R(+)-thiamylal was greater than that of S(-)-thiamylal. The analysis of binding data revealed that both enantiomers ...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200009000-00045
更新日期:2000-09-01 00:00:00
abstract:BACKGROUND:Signal transduction cascade of anesthetic-induced preconditioning has been extensively studied, yet many aspects of it remain unsolved. Here, we investigated the roles of reactive oxygen species (ROS) and mitochondrial uncoupling in cardiomyocyte preconditioning by two modern volatile anesthetics: desflurane...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ane.0b013e3181a93ad9
更新日期:2009-08-01 00:00:00
abstract::We evaluated risk of heart block after cardiopulmonary by-pass (CPB) in patients with normal conduction undergoing coronary artery bypass grafting who chronically received calcium-entry blockers, beta-blockers, or combined therapy. Before CPB, calcium-entry blockers alone produced an increase in P-R intervals but no c...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1984-05-01 00:00:00
abstract::We studied 49 patients of ASA physical status I to determine cerebral anesthetic concentration on awakening calculated with end-tidal anesthetic concentration, when the end-tidal concentration decreased spontaneously. We also attempted to explain the difference in the average of the bracketing alveolar anesthetic conc...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1213/00000539-199311000-00024
更新日期:1993-11-01 00:00:00
abstract::Adenosine, a ubiquitous metabolic intermediate in the body, is involved in nearly every aspect of cell function, including neuromodulation and neurotransmission. Adenosine A(1) and A(2) receptors are widely distributed in the brain and spinal cord, and are a novel, non-opiate target for pain management. The potential ...
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
abstract::Tracheal injuries, independent of their origin, may be life-threatening. Surgical repair is regarded as the treatment of choice but has not been compared with other approaches. We hypothesized that defects bridgeable by an artificial airway may enable conservative treatment. We report on five patients with tracheal in...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/01.ANE.0000140780.14175.5A
更新日期:2005-01-01 00:00:00