Effects of nitrous oxide on human regional cerebral blood flow and isolated pial arteries.

abstract：BACKGROUND:Spontaneous ventilation, mechanical controlled ventilation, apneic intermittent ventilation, and jet ventilation are commonly used during interventional suspension microlaryngoscopy. The aim of this study was to investigate specific complications of each technique, with special emphasis on transtracheal and ...

journal_title：Anesthesiology

authors： Jaquet Y,Monnier P,Van Melle G,Ravussin P,Spahn DR,Chollet-Rivier M

更新日期：2006-01-01 00:00:00

abstract：BACKGROUND:The current study was designed to investigate the influence of pretreatment with the oxygen radical scavengers polyethylene glycol superoxide dismutase and catalase (SODCAT) on altered opioid-induced pial artery dilation after fluid percussion brain injury (FPI) in the newborn pig. It has been observed previ...

journal_title：Anesthesiology

authors： Thorogood MC,Armstead WM

更新日期：1996-03-01 00:00:00

abstract：BACKGROUND:Optimal management of anesthesia-induced respiratory depression requires identification of the neural pathways that are most effective in maintaining breathing during anesthesia. Lesion studies point to the brainstem retrotrapezoid nucleus. We therefore examined the respiratory effects of common anesthetic/a...

journal_title：Anesthesiology

authors： Bourgeois T,Ringot M,Ramanantsoa N,Matrot B,Dauger S,Delclaux C,Gallego J

更新日期：2019-06-01 00:00:00

abstract：:Despite evidence from animal experiments to the contrary, nitrous oxide (N2O) reportedly does not induce myocardial ischemia when used as an adjunct to fentanyl anesthesia in patients with coronary artery disease who have well-preserved left ventricular (LV) function. However, the incidence of ischemia with N2O admini...

journal_title：Anesthesiology

authors： Mitchell MM,Prakash O,Rulf EN,van Daele ME,Cahalan MK,Roelandt JR

更新日期：1989-10-01 00:00:00

abstract：:Anesthetized, prone dogs were intubated with a double-lumen endobronchial tube, and the lungs were ventilated independently. Three methods of recording differential blood flow were compared during unilateral lung hypoxia: electromagnetic flow measurement, flow probes being fitted onto each main pulmonary artery after ...

journal_title：Anesthesiology

authors： Carlsson AJ,Hedenstierna G,Blomqvist H,Strandberg A

更新日期：1987-08-01 00:00:00

abstract：BACKGROUND:Prone ventilation redistributes lung inflation along the gravitational axis; however, localized, nongravitational effects of body position are less well characterized. The authors hypothesize that positional inflation improvements follow both gravitational and nongravitational distributions. This study is a ...

journal_title：Anesthesiology

authors： Xin Y,Cereda M,Hamedani H,Martin KT,Tustison NJ,Pourfathi M,Kadlecek S,Siddiqui S,Amzajerdian F,Connell M,Abate N,Kajanaku A,Duncan I,Gee JC,Rizi RR

更新日期：2020-11-01 00:00:00

abstract：BACKGROUND:Inhaled nitric oxide (NO), a selective vasodilator, improves oxygenation in many patients with adult respiratory distress syndrome (ARDS). Vasoconstrictors may also improve oxygenation, possibly by enhancing hypoxic pulmonary vasoconstriction. This study compared the effects of phenylephrine, NO, and their c...

journal_title：Anesthesiology

authors： Doering EB,Hanson CW 3rd,Reily DJ,Marshall C,Marshall BE

更新日期：1997-07-01 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：BACKGROUND:Buprenorphine, a partial μ-opioid receptor agonist and κ-opioid receptor antagonist, is an effective analgesic. The effects of buprenorphine on sleep have not been well characterized. This study tested the hypothesis that an antinociceptive dose of buprenorphine decreases sleep and decreases adenosine concen...

journal_title：Anesthesiology

authors： Gauthier EA,Guzick SE,Brummett CM,Baghdoyan HA,Lydic R

更新日期：2011-10-01 00:00:00

abstract：:The authors studied the influence of locally administered isoflurane anesthesia on the pulmonary vascular response to regional alveolar hypoxia (hypoxic pulmonary vasoconstriction [HPV]) over a range of cardiac outputs (COs) in seven mechanically ventilated, closed-chest dogs. The right lung was ventilated with 100% O...

journal_title：Anesthesiology

authors： Domino KB,Borowec L,Alexander CM,Williams JJ,Chen L,Marshall C,Marshall BE

更新日期：1986-04-01 00:00:00

abstract：BACKGROUND:Alveolar overdistension and repetitive derecruitment-recruitment contribute to ventilator-induced lung injury (VILI). The authors investigated (1) whether inflammatory cell activation due to VILI was assessable by positron emission tomography and (2) whether cell activation due to dynamic overdistension alon...

journal_title：Anesthesiology

authors： Musch G,Venegas JG,Bellani G,Winkler T,Schroeder T,Petersen B,Harris RS,Melo MF

更新日期：2007-04-01 00:00:00

abstract：BACKGROUND:Dexmedetomidine is a sedative with modest analgesic efficacy, whereas remifentanil is an opioid analgesic with modest sedative potency. Synergy is often observed when sedative-hypnotics are combined with opioid analgesics in anesthetic practice. A three-phase crossover trial was conducted to study the pharma...

journal_title：Anesthesiology

authors： Weerink MAS,Barends CRM,Muskiet ERR,Reyntjens KMEM,Knotnerus FH,Oostra M,van Bocxlaer JFP,Struys MMRF,Colin PJ

更新日期：2019-11-01 00:00:00

abstract：:The neonatal neurobehavioral effects of bupivacaine, mepivacaine, and 2-chloroprocaine used in random sequence for pudendal block anesthesia were studied. The neurobehavioral status of 54 infants was studied 4 and 24 hours after delivery. Except for a significant difference in the responses to pinprick, there was no s...

journal_title：Anesthesiology

authors： Merkow AJ,McGuinness GA,Erenberg A,Kennedy RL

更新日期：1980-04-01 00:00:00

abstract：:The hepatic effects of repeated anesthesia of phenobarbital-induced Fischer 344 rats with 1% halothane/14% oxygen were investigated, after anesthetics were administered at either 1-day or 5-day intervals. Urinary excretion of fluoride, a product of reductive halothane metabolism, was increased in the 24-h period follo...

journal_title：Anesthesiology

authors： Plummer JL,Hall PD,Jenner MA,Cousins MJ

更新日期：1987-09-01 00:00:00

abstract：:Making good decisions in the era of Big Data requires a sophisticated approach to causality. We are acutely aware that association ≠ causation, yet untangling the two remains one of our greatest challenges. This realization has stimulated a Causal Revolution in epidemiology, and the lessons learned are highly relevant...

journal_title：Anesthesiology

authors： Gaskell AL,Sleigh JW

更新日期：2020-05-01 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：BACKGROUND:The permutation entropy, the approximate entropy, and the index of consciousness are some of the most recently studied electroencephalogram-derived indexes. In this work, a thorough comparison of these indexes was performed using propofol anesthesia in a rabbit model. METHODS:Six rabbits were anesthetized w...

journal_title：Anesthesiology

authors： Silva A,Campos S,Monteiro J,Venâncio C,Costa B,Guedes de Pinho P,Antunes L

更新日期：2011-08-01 00:00:00

abstract：BACKGROUND:Patients with initial mild acute respiratory distress syndrome are often underrecognized and mistakenly considered to have low disease severity and favorable outcomes. They represent a relatively poorly characterized population that was only classified as having acute respiratory distress syndrome in the mos...

journal_title：Anesthesiology

authors： Pham T,Serpa Neto A,Pelosi P,Laffey JG,De Haro C,Lorente JA,Bellani G,Fan E,Brochard LJ,Pesenti A,Schultz MJ,Artigas A,LUNG SAFE Investigators* and the European Society of Intensive Care Medicine Trials Group.

更新日期：2019-02-01 00:00:00

abstract：:The slow positive (P2) wave of the evoked electrospinogram was recorded from the dorsal epidural space in man. The waveform characteristics of the P2 wave were similar to those of the dorsal cord positive wave (P wave), which is believed to be caused by the primary afferent depolarization (PAD) and to be related to pr...

journal_title：Anesthesiology

authors： Shimoji K,Ito Y,Oama K,Sawa T,Ikezono E

更新日期：1975-10-01 00:00:00

abstract：BACKGROUND:Xenon has been shown to be neuroprotective in several models of in vitro and in vivo neuronal injury. However, its putative neuroprotective properties have not been evaluated in focal cerebral ischemia. The purpose of this study was to determine if xenon offers neuroprotection in a mouse model of middle cere...

journal_title：Anesthesiology

authors： Homi HM,Yokoo N,Ma D,Warner DS,Franks NP,Maze M,Grocott HP

更新日期：2003-10-01 00:00:00

abstract：BACKGROUND:Despite decreasing cardiac events, perioperative beta-blockade also increases perioperative stroke and mortality. Major bleeding and/or hypotension are independently associated with these outcomes. To investigate the hypothesis that beta-blockade limits the cardiac reserve to compensate for acute surgical an...

journal_title：Anesthesiology

authors： Beattie WS,Wijeysundera DN,Karkouti K,McCluskey S,Tait G,Mitsakakis N,Hare GM

更新日期：2010-01-01 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:Mice lacking calsequestrin-1 (CASQ1-null), a Ca-binding protein that modulates the activity of Ca release in the skeletal muscle, exhibit lethal hypermetabolic episodes that resemble malignant hyperthermia in humans when exposed to halothane or heat stress. METHODS:Because oxidative species may play a criti...

journal_title：Anesthesiology

authors： Michelucci A,Paolini C,Canato M,Wei-Lapierre L,Pietrangelo L,De Marco A,Reggiani C,Dirksen RT,Protasi F

更新日期：2015-09-01 00:00:00

abstract：BACKGROUND:Anesthetics inhibit airway smooth muscle contraction in part by a direct effect on the smooth muscle cell. This study tested the hypothesis that the anesthetics halothane and hexanol, which both relax airway smooth muscle in vitro, inhibit acetylcholine-promoted nucleotide exchange at the alpha subunit of th...

journal_title：Anesthesiology

authors： Sakihara C,Perkins WJ,Warner DO,Jones KA

更新日期：2004-07-01 00:00:00

abstract：BACKGROUND:Endothelium-derived hyperpolarizing factor is thought to be a cytochrome P450-derived arachidonic acid metabolite that hyperpolarizes vascular smooth muscle cells by opening Ca(2+)-activated K+ channels (K+Ca channels). In the rabbit carotid artery both volatile and intravenous anesthetics inhibit the acetyl...

journal_title：Anesthesiology

authors： Kessler P,Lischke V,Hecker M

更新日期：1996-06-01 00:00:00

abstract：BACKGROUND:Differentiating drug-related changes and state-related changes on the electroencephalogram during anesthetic-induced unconsciousness has remained a challenge. To distinguish these, we designed a rigorous experimental protocol with two drugs known to have distinct molecular mechanisms of action. We hypothesiz...

journal_title：Anesthesiology

authors： Scheinin A,Kallionpää RE,Li D,Kallioinen M,Kaisti K,Långsjö J,Maksimow A,Vahlberg T,Valli K,Mashour GA,Revonsuo A,Scheinin H

更新日期：2018-07-01 00:00:00

abstract：BACKGROUND:An initial pilot study of 300 sub-Tenon local anesthetic blocks (STBs) for intraocular surgery established the effectiveness and patient acceptability of the technique. Following this, a decision was made in 1995 to change from sharp needle techniques to STB for all eye surgeries performed during local anest...

journal_title：Anesthesiology

authors： Guise PA

更新日期：2003-04-01 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：:Using the technique of ventriculocisternal perfusion, resistance to reabsorption of cerebrospinal fluid (Ra) was calculated from determinations of the rate of reabsorption of cerebrospinal fluid (Va) at differing cerebrospinal fluid pressures in dogs. Ra was examined during prolonged anesthesia (5.0-6.0 h) with enflur...

journal_title：Anesthesiology

authors： Artru AA

更新日期：1984-11-01 00:00:00

abstract：BACKGROUND:Hypotension is a common side effect of general anesthesia induction, and when severe, it is related to adverse outcomes. Ultrasonography of inferior vena cava (IVC) is a reliable indicator of intravascular volume status. This study investigated whether preoperative ultrasound IVC measurements could predict h...

journal_title：Anesthesiology

authors： Zhang J,Critchley LA

更新日期：2016-03-01 00:00:00