Cardiovascular changes in preterm neonates receiving isoflurane, halothane, fentanyl, and ketamine.

abstract：BACKGROUND:Sweating, vasoconstriction, and shivering have been observed during general anesthesia. Among these, vasoconstriction is especially important because-once triggered-it minimizes further hypothermia. Surprisingly, the core-temperature plateau associated with vasoconstriction appears to preserve core temperatu...

journal_title：Anesthesiology

authors： Plattner O,Semsroth M,Sessler DI,Papousek A,Klasen C,Wagner O

更新日期：1997-04-01 00:00:00

abstract：BACKGROUND:General anesthetics modify airway responsiveness by several mechanisms, including direct effects on airway smooth muscle and reductions in neural reflex activity. Halothane has been shown to reduce responsiveness through both of these mechanisms. The airway effects of barbiturates are controversial, and the ...

journal_title：Anesthesiology

authors： Mehr EH,Lindeman KS

更新日期：1993-08-01 00:00:00

abstract：:The cardiovascular effects of halothane-nitrous oxide anesthesia, and beta-receptor blockade with either propranolol or practolol, were studied in 15 dogs in which severe myocardial infarction had been induced ten days earlier. The hemodynamic responses to blood loss amounting to 25 per cent of estimated blood volume,...

journal_title：Anesthesiology

authors： Prys-Roberts C,Roberts JG,Foëx P,Clarke TN,Bennett MJ,Ryder WA

更新日期：1976-09-01 00:00:00

abstract：BACKGROUND:Recent studies suggest that volatile anesthetics cause not only vasodilation but also vasoconstriction, depending on the experimental conditions. However, the mechanism of the constrictive effect of volatile anesthetics has not been clarified. The aim of this study was to evaluate the vasoconstrictor effects...

journal_title：Anesthesiology

authors： Kakuyama M,Hatano Y,Nakamura K,Toda H,Terasako K,Nishiwada M,Mori K

更新日期：1994-05-01 00:00:00

abstract：:The pharmacokinetics, biodisposition, and neuromuscular blocking properties of 3-desacetylvecuronium were studied in 17 adult cats. Animals were divided into three groups: five cats with kidney failure induced by bilateral ligation of the renal pedicles, six cats with galactosamine-induced fulminant hepatitis, and six...

journal_title：Anesthesiology

authors： Segredo V,Shin YS,Sharma ML,Gruenke LD,Caldwell JE,Khuenl-Brady KS,Agoston S,Miller RD

更新日期：1991-06-01 00:00:00

abstract：BACKGROUND:Voltage-gated Na channels modulate membrane excitability in excitable tissues. Inhibition of Na channels has been implicated in the effects of volatile anesthetics on both nervous and peripheral excitable tissues. The authors investigated isoform-selective effects of isoflurane on the major Na channel isofor...

journal_title：Anesthesiology

authors： OuYang W,Hemmings HC Jr

更新日期：2007-07-01 00:00:00

abstract：BACKGROUND:Medical errors exact an inordinate toll on healthcare costs. One of the most publicized and analyzed type of medical error is wrong-site surgery. Yet, despite the burgeoning number of procedures performed, no literature exists on wrong-site pain management injections. The purpose of this study was to estimat...

journal_title：Anesthesiology

authors： Cohen SP,Hayek SM,Datta S,Bajwa ZH,Larkin TM,Griffith S,Hobelmann G,Christo PJ,White R

更新日期：2010-03-01 00:00:00

abstract：BACKGROUND:Volatile anesthetics depress left ventricular contractile function by altering voltage-dependent slow calcium (Ca2+) channel activity in the sarcolemmal membrane. This investigation examined the left ventricular systolic and diastolic mechanical effects of the dihydropyridine Ca2+ channel antagonist nifedipi...

journal_title：Anesthesiology

authors： Pagel PS,Hettrick DA,Warltier DC

更新日期：1994-07-01 00:00:00

abstract：:To determine whether neuronal firing is affected by anesthetics, the behavior of neurons in the mesencephalic reticular formation in response to repetitive somatosensory stimulation at 2/sec was studied during wakefulness and during nitrous oxide, halothane, and thiopental anesthesia in the cat. With clinical doses of...

journal_title：Anesthesiology

authors： Shimoji K,Matsuki M,Shimizu H,Maruyama Y,Aida S

更新日期：1977-10-01 00:00:00

abstract：:The effects of morphine, halothane, and their various combinations on the purposeful movement (PM) response and the heart rate (HR) increase caused by noxious stimulation were studied in 250 rat experiments. Doses that block the PM and HR responses for the single agent and for combinations were determined with a probi...

journal_title：Anesthesiology

authors： Kissin I,Kerr CR,Smith LR

更新日期：1984-06-01 00:00:00

abstract：BACKGROUND:Awake tracheal intubation may evoke reflex bronchoconstriction in asthmatics. Whether this effect is altered by the choice of the local anesthetic used or by pretreatment with a beta2-adrenoceptor agonist is unknown. Therefore, we assessed the effect of awake fiberoptic intubation after lidocaine or dyclonin...

journal_title：Anesthesiology

authors： Groeben H,Schlicht M,Stieglitz S,Pavlakovic G,Peters J

更新日期：2002-12-01 00:00:00

abstract：BACKGROUND:The authors conducted a randomized controlled trial to determine whether parental presence during induction of anesthesia (PPIA) is associated with parental physiologic and behavioral manifestations of stress. METHODS:Children and their parents (N = 80) were randomly assigned to one of three groups: (1) PPI...

journal_title：Anesthesiology

authors： Kain ZN,Caldwell-Andrews AA,Mayes LC,Wang SM,Krivutza DM,LoDolce ME

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND:The authors report on the appearance of misleading square wave "phantom" capnograph tracings for approximately 3 min after disconnection from the Siemens Servo 900c ventilator. A series of experiments are described to examine the mechanism of this phenomenon. METHODS:Patients were ventilated using the Sieme...

journal_title：Anesthesiology

authors： Ginosar Y,Baranov D

更新日期：1997-03-01 00:00:00

abstract：BACKGROUND:Nitrous oxide limits intraoperative hypothermia because the vasoconstriction threshold with nitrous oxide is higher than with equi-minimum alveolar concentrations of sevoflurane or isoflurane, presumably because of its stimulating actions on the sympathetic nervous system. Xenon, in contrast, does not cause ...

journal_title：Anesthesiology

authors： Goto T,Matsukawa T,Sessler DI,Uezono S,Ishiguro Y,Ozaki M,Morita S

更新日期：1999-09-01 00:00:00

abstract：BACKGROUND:Etomidate is a sedative hypnotic that is often used in critically ill patients because it provides superior hemodynamic stability. However, it also binds with high affinity to 11beta-hydroxylase, potently suppressing the synthesis of steroids by the adrenal gland that are necessary for survival. The authors ...

journal_title：Anesthesiology

authors： Cotten JF,Forman SA,Laha JK,Cuny GD,Husain SS,Miller KW,Nguyen HH,Kelly EW,Stewart D,Liu A,Raines DE

更新日期：2010-03-01 00:00:00

abstract：BACKGROUND:The authors hypothesized a difference in plasma-effect site equilibration, depicted by a first-order constant k(e0), depending on the injection rate of propofol. METHODS:Sixty-one patients received 2.5 mg/kg propofol given as a bolus or as a 1-, 2-, or 3-min infusion. The Bispectral Index was used to monito...

journal_title：Anesthesiology

authors： Struys MM,Coppens MJ,De Neve N,Mortier EP,Doufas AG,Van Bocxlaer JF,Shafer SL

更新日期：2007-09-01 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：:In MH, skeletal muscle acutely and unexpectedly increases its oxygen consumption and lactate production, resulting in greater heat production, respiratory and metabolic acidosis, muscle ridigity, sympathetic stimulation, and increased cellular permeability. The best-accepted theory is that MH is due to an inability to...

journal_title：Anesthesiology

authors： Gronert GA

更新日期：1980-11-01 00:00:00

abstract：BACKGROUND:The value of exercise electrocardiography in the prediction of perioperative cardiac risk has yet to be defined. This study was performed to determine the predictive value of exercise electrocardiography as compared with clinical parameters and resting electrocardiography. METHODS:A total of 204 patients at...

journal_title：Anesthesiology

authors： Gauss A,Röhm HJ,Schäuffelen A,Vogel T,Mohl U,Straehle A,Meierhenrich R,Georgieff M,Steinbach G,Schütz W

更新日期：2001-01-01 00:00:00

abstract：BACKGROUND:The effects of anesthetics on ischemia-induced ventricular arrhythmias remain poorly studied. This study investigated the effects of propofol and sevoflurane on the survival rate and morbidity as a result of ventricular arrhythmias, and defined a possible mechanism for the arrhythmogenic properties of anesth...

journal_title：Anesthesiology

authors： Hirata N,Kanaya N,Kamada N,Kimura S,Namiki A

更新日期：2009-01-01 00:00:00

abstract：:The relationship of train-of-four (TOF) ratio to the depression of the first twitch (TD) was investigated in 16 patients given pancuronium in doses insufficient to eliminate the fourth response in the train. In ten patients the block was allowed to spontaneously recover (Group 1) and in six it was reversed with neosti...

journal_title：Anesthesiology

authors： Graham GG,Morris R,Pybus DA,Torda TA,Woodey R

更新日期：1986-12-01 00:00:00

abstract：BACKGROUND:Initial postoperative core temperature is a physician and hospital performance measure. However, the extent to which core temperature changes during emergence from anesthesia and transport from the operating room to the postanesthesia care unit (PACU) remains unknown. Similarly, the accuracy of many noninvas...

journal_title：Anesthesiology

authors： Langham GE,Maheshwari A,Contrera K,You J,Mascha E,Sessler DI

更新日期：2009-07-01 00:00:00

abstract：BACKGROUND:A high proportion of patients having cardiac bypass surgery receive erythrocyte transfusions. Decisions about when to transfuse patients having surgery for coronary artery disease may impact on erythrocyte utilization and patient morbidity and mortality. There are no published data about the factors that inf...

journal_title：Anesthesiology

authors： Shehata N,Wilson K,Mazer CD,Tomlinson G,Streiner D,Hebert P,Naglie G

更新日期：2006-07-01 00:00:00

abstract：BACKGROUND:Surgery causes changes in hemostasis, leading to a hypercoagulable state. This postoperative increase in hemostatic function is attenuated in patients receiving regional anesthesia compared with those receiving general anesthesia. Regional anesthesia also decreases the neuroendocrine response to surgery comp...

journal_title：Anesthesiology

authors： Rosenfeld BA,Faraday N,Campbell D,Dise K,Bell W,Goldschmidt P

更新日期：1994-11-01 00:00:00

abstract：:Opioid receptors have been targeted for the treatment of pain and related disorders for thousands of years and remain the most widely used analgesics in the clinic. Mu (μ), kappa (κ), and delta (δ) opioid receptors represent the originally classified receptor subtypes, with opioid receptor like-1 (ORL1) being the leas...

journal_title：Anesthesiology

authors： Al-Hasani R,Bruchas MR

更新日期：2011-12-01 00:00:00

abstract：:This study examined whether pain or stress can enhance the analgesic effects of spinally administered opiates. The experiments determined the effects of mechanically produced pain and of the stress of being restrained on the analgesic effects of 0.63 microgram of epidural sufentanil in rats using a tail-withdrawal pro...

journal_title：Anesthesiology

authors： Van den Hoogen RH,Bervoets K,Colpaert FC

更新日期：1988-07-01 00:00:00

abstract：BACKGROUND:Anesthesia personnel are at risk for occupational infection with bloodborne pathogens from contaminated percutaneous injuries (CPIs). Additional information is needed to formulate methods to reduce risk. METHODS:The authors analyzed CPIs collected during a 2-yr period at 11 hospitals, assessed CPI underrepo...

journal_title：Anesthesiology

authors： Greene ES,Berry AJ,Jagger J,Hanley E,Arnold WP 3rd,Bailey MK,Brown M,Gramling-Babb P,Passannante AN,Seltzer JL,Southorn P,Van Clief MA,Venezia RA

更新日期：1998-12-01 00:00:00

abstract：BACKGROUND:General anesthetics are thought to produce their hypnotic effects mainly by acting at ligand-gated ionic channels in the central nervous system (CNS). Although it is well established that volatile anesthetics significantly modify the activity of the acetylcholine nicotinic receptors of the neuromuscular junc...

journal_title：Anesthesiology

authors： Salord F,Keita H,Lecharny JB,Henzel D,Desmonts JM,Mantz J

更新日期：1997-03-01 00:00:00

abstract：BACKGROUND:Alpha-2B adrenoceptor is the vasoconstrictive subtype in the mouse. Human alpha2B-AR deletion (D) allele has been associated with loss of short-term agonist-promoted receptor desensitization, which may lead to increased vasoconstriction on alpha2 activation. The goal of this study was to test the hypothesis ...

journal_title：Anesthesiology

authors： Talke P,Stapelfeldt C,Lobo E,Brown R,Scheinin M,Snapir A

更新日期：2005-03-01 00:00:00

abstract：:Ten patients with parenchymal acute respiratory failure (ARF) underwent computed tomography (CT) scans while in the supine and prone positions. At equal levels of positive end-expiratory pressure, the authors measured the changes of CT density in dorsal and ventral basilar lung regions induced by the change of positio...

journal_title：Anesthesiology

authors： Gattinoni L,Pelosi P,Vitale G,Pesenti A,D'Andrea L,Mascheroni D

更新日期：1991-01-01 00:00:00