Estimating anesthesia and surgical procedure times from medicare anesthesia claims.

abstract：BACKGROUND:Dynorphin A in the spinal cord is considered to contribute to nociceptive stimuli. However, it has not yet been determined whether activation of the spinal dynorphinergic system under nociceptive stimuli plays a role in direct acceleration of the ascending nociceptive pathway. In this study, the authors inve...

journal_title：Anesthesiology

authors： Taketa Y,Niikura K,Kobayashi Y,Furuya M,Shimizu T,Narita M,Imai S,Kuzumaki N,Maitani Y,Yamazaki M,Inada E,Iseki M,Suzuki T,Narita M

更新日期：2010-02-01 00:00:00

abstract：:Reversal of the usual relationship between aortic and radial artery pressure can occur in patients following cardiopulmonary bypass. Radial systolic (and often radial mean) pressures were lower, relative to aortic pressure, after cardiopulmonary bypass than before bypass in all 18 patients studied. The systolic pressu...

journal_title：Anesthesiology

authors： Stern DH,Gerson JI,Allen FB,Parker FB

更新日期：1985-05-01 00:00:00

abstract：BACKGROUND:Isoflurane administration is known to increase extracellular dopamine (DA) concentration. Because the dopamine transporter (DAT) is a key regulator of DA, it is likely affected by isoflurane. This study investigates the hypothesis that isoflurane inhibits DA reuptake by causing DAT to be trafficked into the ...

journal_title：Anesthesiology

authors： Votaw J,Byas-Smith M,Hua J,Voll R,Martarello L,Levey AI,Bowman FD,Goodman M

更新日期：2003-02-01 00:00:00

abstract：BACKGROUND:Ca2+ plays an important role in signal transduction and anesthetic mechanisms. To date, no one has observed a direct effect of volatile anesthetics on a Ca(2+)-binding protein. We therefore examined the effects of halothane and isoflurane on the Ca(2+)-binding properties of bovine brain calmodulin. METHODS:...

journal_title：Anesthesiology

authors： Levin A,Blanck TJ

更新日期：1995-07-01 00:00:00

abstract：:To determine whether disuse atrophy of skeletal muscle results in resistance to pancuronium, the dose response to pancuronium was determined simultaneously in both gastrocnemius muscles of six dogs that had one hind limb immobilized in a plaster cast for one month. Muscle responses were evoked during pentobarbital-nit...

journal_title：Anesthesiology

authors： Gronert GA

更新日期：1981-11-01 00:00:00

abstract：:Intrathecally administered alpha 2-adrenergic agonists produce analgesia in humans but may also produce hypotension and bradycardia. To further characterize hemodynamic depression produced by intrathecally administered alpha 2-adrenergic agonists, clonidine (100-1,500 micrograms) was injected into the cervical, thorac...

journal_title：Anesthesiology

authors： Eisenach JC,Tong CY

更新日期：1991-04-01 00:00:00

abstract：BACKGROUND:Anesthetics are believed to alter functional connectivity across brain regions. However, network-level analyses of anesthesia, particularly in humans, are sparse. The authors hypothesized that propofol-induced loss of consciousness results in functional disconnection of human sensorimotor cortices underlying...

journal_title：Anesthesiology

authors： Malekmohammadi M,AuYong N,Price CM,Tsolaki E,Hudson AE,Pouratian N

更新日期：2018-02-01 00:00:00

abstract：BACKGROUND:The surface membrane Ca(2+)-adenosine triphosphatase and Na(+)-Ca(2+) exchanger transport Ca(2+) out of the ventricular myocyte, competing for cytosolic Ca(2+) with the Ca(2+)-adenosine triphosphatase located in the sarcoplasmic reticulum. In this study the authors examined the effects of halothane, isoflura...

journal_title：Anesthesiology

authors： Hannon JD,Cody MJ

更新日期：2002-06-01 00:00:00

abstract：:To determine whether administration of nitrous oxide, 50% and 70%, could provide analgesia and anxiolysis during venous cannulation in pediatric patients, 165 ASA Physical Status 1 patients scheduled for elective surgery were studied. Children, 3 weeks to 18 yr of age, were randomly assigned either to receive nitrous ...

journal_title：Anesthesiology

authors： Henderson JM,Spence DG,Komocar LM,Bonn GE,Stenstrom RJ

更新日期：1990-02-01 00:00:00

abstract：BACKGROUND:Inhalational anesthetics inhibit the nitric oxide-guanylyl cyclase signaling pathway, but the site of this inhibition is not yet clear. This study was designed to test the hypothesis that receptor activation or downstream signaling events leading to nitric oxide synthase activation are important sites for th...

journal_title：Anesthesiology

authors： Zuo Z,Tichotsky A,Johns RA

更新日期：1996-05-01 00:00:00

abstract：BACKGROUND:Although inhalation anesthetic agents are thought to impair cerebral autoregulation more than intravenous agents, there are few controlled studies in humans. METHODS:In the first group (n = 24), dynamic autoregulation was assessed from the response of middle cerebral artery blood flow velocity (Vmca) to a t...

journal_title：Anesthesiology

authors： Strebel S,Lam AM,Matta B,Mayberg TS,Aaslid R,Newell DW

更新日期：1995-07-01 00:00:00

abstract：:The authors have previously attributed the mechanism for the 50-67% decrease in the required dose of thiopental for induction of anesthesia in aged human patients to a decrease in the initial distribution volume for thiopental. Using a larger group of patients and volunteers studied in the laboratory, the authors have...

journal_title：Anesthesiology

authors： Stanski DR,Maitre PO

更新日期：1990-03-01 00:00:00

abstract：BACKGROUND:Intravenously administered anesthetics directly inhibit airway smooth muscle contraction. Because many anesthetic agents affect membrane ion channel function and sustained contraction of airway smooth muscle requires the influx of Ca2+ through voltage-dependent Ca2+ channels, it was hypothesized that intrave...

journal_title：Anesthesiology

authors： Yamakage M,Hirshman CA,Croxton TL

更新日期：1995-12-01 00:00:00

abstract：:To determine the effects of cardiopulmonary bypass (CPB) and hypothermia on the neuromuscular blockade produced by pancuronium, this relaxant was infused intravenously into 10 anesthetized patients to produce and maintain 90% depression of the twitch tension of the adductor pollicis muscle following supramaximal ulnar...

journal_title：Anesthesiology

authors： d'Hollander AA,Duvaldestin P,Henzel D,Nevelsteen M,Bomblet JP

更新日期：1983-06-01 00:00:00

abstract：BACKGROUND:Propofol is an alternative to thiopental as an intravenous induction agent for cesarean section. Because it has relaxant effects on vascular and other smooth muscles, the authors set out to determine whether propofol has any effect on pregnant human uterine smooth muscle in an isolated preparation. METHODS:...

journal_title：Anesthesiology

authors： Shin YK,Kim YD,Collea JV

更新日期：1998-07-01 00:00:00

abstract：BACKGROUND:The authors recently established that the analgesic actions of the inhalation anesthetic nitrous oxide were mediated by noradrenergic bulbospinal neurons and spinal alpha2B adrenoceptors. They now determined whether noradrenergic brainstem nuclei and descending spinal pathways are responsible for the antinoc...

journal_title：Anesthesiology

authors： Kingery WS,Agashe GS,Guo TZ,Sawamura S,Davies MF,Clark JD,Kobilka BK,Maze M

更新日期：2002-02-01 00:00:00

abstract：:The anesthetic requirements for sevoflurane, isoflurane, and halothane were determined in mongrel dogs. The MACs (minimum alveolar concentration) of sevoflurane, isoflurane, and halothane were 2.36 +/- 0.46% (n = 18), 1.39 +/- 0.25% (n = 10), and 0.89 +/- 0.20% (n = 12), respectively (mean +/- SD). In agreement with s...

journal_title：Anesthesiology

authors： Kazama T,Ikeda K

更新日期：1988-03-01 00:00:00

abstract：BACKGROUND:The most sensitive diagnostic criterion of myasthenia gravis is a decrement in the muscular response to repetitive stimulation. The authors hypothesized that myasthenia gravis patients who show a train-of-four ratio (T4/T1) < 0.9 in the preanesthetic period will have increased sensitivity to nondepolarizing ...

journal_title：Anesthesiology

authors： Mann R,Blobner M,Jelen-Esselborn S,Busley R,Werner C

更新日期：2000-08-01 00:00:00

abstract：BACKGROUND:Studies on receptor knockout mice have so far shown that of the three alpha2-adrenoceptor subtypes, the alpha(2A) adrenoceptor has a major role in mediating the powerful central analgesia induced by synthetic alpha2-adrenoceptor agonists. However, because a knockout of the gene for the alpha(2A) adrenoceptor...

journal_title：Anesthesiology

authors： Mansikka H,Lähdesmäki J,Scheinin M,Pertovaara A

更新日期：2004-07-01 00:00:00

abstract：BACKGROUND:The decision to extubate brain-injured patients with residual impaired consciousness holds a high degree of uncertainty of success. The authors developed a pragmatic clinical score predictive of extubation failure in brain-injured patients. METHODS:One hundred and forty brain-injured patients were prospecti...

journal_title：Anesthesiology

authors： Godet T,Chabanne R,Marin J,Kauffmann S,Futier E,Pereira B,Constantin JM

更新日期：2017-01-01 00:00:00

abstract：BACKGROUND:Factor VII is the most affected clotting factor during the early phase of warfarin therapy. An international normalized ratio (INR) of more than 1.4 is considered unsafe for epidural catheter placement or removal, according to the American Society of Regional Anesthesia and Pain Medicine. The authors tested ...

journal_title：Anesthesiology

authors： Benzon HT,Avram MJ,Benzon HA,Kirby-Nolan M,Nader A

更新日期：2010-02-01 00:00:00

abstract：BACKGROUND:Sevoflurane administered to neonatal rats induces neurobehavioral abnormalities and epigenetic reprogramming of their germ cells; the latter can pass adverse effects of sevoflurane to future offspring. As germ cells are susceptible to reprogramming by environmental factors across the lifespan, the authors hy...

journal_title：Anesthesiology

authors： Ju LS,Yang JJ,Xu N,Li J,Morey TE,Gravenstein N,Seubert CN,Setlow B,Martynyuk AE

更新日期：2019-11-01 00:00:00

abstract：BACKGROUND:Studies have shown that long-term increase in the excitability of single wide dynamic range neurones in the spinal dorsal horn of rats may be induced after tetanic stimulation to the sciatic nerve. This sensory event is possibly an in vivo counterpart of long-term potentiation, described in the brain. This s...

journal_title：Anesthesiology

authors： Rygh LJ,Green M,Athauda N,Tjølsen A,Dickenson AH

更新日期：2000-01-01 00:00:00

abstract：:Complications after major surgery are a leading cause of morbidity and mortality. The etiology of postoperative complications is complex, but poor cardiorespiratory reserve appears to be a key factor. There is increasing interest in the use of central and mixed venous oxygen saturation to guide therapeutic interventio...

journal_title：Anesthesiology

authors： Shepherd SJ,Pearse RM

更新日期：2009-09-01 00:00:00

abstract：BACKGROUND:To characterize the impact of lung volume changes in the lung function impairment after the surgical repair of congenital heart diseases, combined measurements of functional residual capacity, lung clearance index, and respiratory mechanics were performed in children with hypoperfused lungs (tetralogy of Fal...

journal_title：Anesthesiology

authors： von Ungern-Sternberg BS,Petak F,Hantos Z,Habre W

更新日期：2009-06-01 00:00:00

abstract：BACKGROUND:Cortical acetylcholine originates in the basal forebrain and is essential for maintaining normal cognition and arousal. Morphine impairs these cholinergically mediated cortical functions. The current study tested the hypothesis that morphine decreases prefrontal cortical acetylcholine release by acting at th...

journal_title：Anesthesiology

authors： Osman NI,Baghdoyan HA,Lydic R

更新日期：2005-10-01 00:00:00

abstract：:The effect of pertussis toxin on opioid antinociception was studied in rats. Intrathecal injection of a single dose of pertussis toxin reduced the antinociceptive effect of PL017, a highly selective mu-opioid agonist, in a dose- and time-dependent manner. The maximal effective dose of pertussis toxin was 1 microgram, ...

journal_title：Anesthesiology

authors： Wong CS,Su YF,Chang KJ,Watkins WD

更新日期：1992-10-01 00:00:00

abstract：:Oxygen consumption (VO2) and minute ventilation (VE) were measured between and during uterine contractions in the first stage of labor before and after lumbar epidural analgesia (LEA) in 11 women who served as their own controls. VO2 and VE between contractions were essentially unchanged by LEA to a T10 or higher sens...

journal_title：Anesthesiology

authors： Hägerdal M,Morgan CW,Sumner AE,Gutsche BB

更新日期：1983-11-01 00:00:00

abstract：:Data regarding left ventricular function suggest that the extent of shortening may differ between regions. This study was undertaken to determine the effects of negative inotropic drugs used during anesthesia on different areas of the left ventricle. Forty mongrel dogs were anesthetized and instrumented for measuremen...

journal_title：Anesthesiology

authors： Diedericks J,Leone BJ,Foëx P

更新日期：1989-01-01 00:00:00

abstract：BACKGROUND:Transcranial motor-evoked potentials (TcMEPs) monitor spinal cord motor tract integrity. Using a swine model, the authors studied the effects of vasodilatory hypotension, hemorrhage, and various resuscitation efforts on TcMEP responses. METHODS:Twelve pigs were anesthetized with constant infusions of propof...

journal_title：Anesthesiology

authors： Lieberman JA,Feiner J,Lyon R,Rollins MD

更新日期：2013-11-01 00:00:00