Flammability of endotracheal tubes during Nd-YAG laser application in the airway.


:The effects of the neodymium-yttrium aluminum garnet (Nd-YAG) laser on several commonly used endotracheal tubes were examined. Six different types of tubes were tested for flammability. Three tubes were clear, transparent polyvinylchloride with black lettering on the surface. One was yellow-green silicone rubber with green lettering on the surface. One, which was opaque gray with no printing or marks on it, was designed specifically for use with the carbon dioxide (CO2) laser, and one was opaque red rubber with black letters printed on the surface. The latter was tested with and without a wrapping of reflective aluminum tape. On each tube a clear, unmarked area and an area with printing were tested. In each area the tube was impacted by the laser at three to five points. Pulsed and continuous patterns of laser impact were used. Power ranged from 20 to 50 W. The clear polyvinylchloride tubes were not damaged by a pulsed pattern of exposure in unmarked areas. Segments with black printing or marks were consistently damaged. Continuous laser exposure consistently damaged clear portions of the tube. In clear unmarked areas, silicone rubber tubes were damaged with the pulsed pattern when exposure reached 50 W for 1 s. Areas with green lettering were damaged at the lowest level of exposure. Continuous laser exposure at 30 W damaged clear portions of these tubes after 7 s. Opaque red rubber and opaque gray tubes were damaged at the lowest levels of exposure in both clear and marked areas with pulsed and continuous laser emission. A wrapping of reflective aluminum tape offered no protection.(ABSTRACT TRUNCATED AT 250 WORDS)






Geffin B,Shapshay SM,Bellack GS,Hobin K,Setzer SE




Has Abstract


1986-11-01 00:00:00












  • Vomiting and recovery after outpatient tonsillectomy and adenoidectomy in children. Comparison of four anesthetic techniques using nitrous oxide with halothane or propofol.

    abstract:BACKGROUND:The authors' purpose in this study was to compare prospectively four different anesthetic induction and maintenance techniques using nitrous oxide with halothane and/or propofol for vomiting and recovery after outpatient tonsillectomy and adenoidectomy procedures in children. METHODS:Eighty unpremedicated c...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Ved SA,Walden TL,Montana J,Lea DE,Tefft MC,Kataria BK,Pudimat MA,Nicodemus HF,Milmoe GJ

    更新日期:1996-07-01 00:00:00

  • Platelet function and adrenoceptors during and after induced hypotension using nitroprusside.

    abstract:BACKGROUND:Hypotension induced by sodium nitroprusside can minimize intraoperative blood loss. The release of endogenous catecholamines can influence adrenoceptors of platelets and thus might change the ability of platelets to aggregate. METHODS:Forty patients undergoing nasal septum, tympanoplastic, or sphenoid sinus...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Dietrich GV,Heesen M,Boldt J,Hempelmann G

    更新日期:1996-12-01 00:00:00

  • Differences between aortic and radial artery pressure associated with cardiopulmonary bypass.

    abstract::Previous investigators have identified an aortic-to-radial artery pressure gradient thought to develop during rewarming and discontinuation of cardiopulmonary bypass. The authors measured mean aortic and radial artery pressures before, during, and after cardiopulmonary bypass in 30 patients, to determine when the pres...


    pub_type: 杂志文章


    authors: Rich GF,Lubanski RE Jr,McLoughlin TM

    更新日期:1992-07-01 00:00:00

  • Effect of edrophonium and neostigmine on the pharmacokinetics and neuromuscular effects of mivacurium.

    abstract:BACKGROUND:Previous studies demonstrated that both edrophonium and neostigmine affect mivacurium's pharmacokinetics, thereby potentially affecting its recovery profile. However, those studies were not clinically relevant because mivacurium was still infused after the antagonists were given. In the present study, the au...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Szenohradszky J,Fogarty D,Kirkegaard-Nielsen H,Brown R,Sharma ML,Fisher DM

    更新日期:2000-03-01 00:00:00

  • Halothane, enflurane, and isoflurane decrease calcium sensitivity and maximal force in detergent-treated rat cardiac fibers.

    abstract::This study was designed to test the hypothesis that the volatile anesthetics directly affect cardiac contractile proteins. For this purpose, the effects of various anesthetic doses of halothane, enflurane, and isoflurane on myocardial calcium sensitivity and maximal calcium-activated force were examined in rat cardiac...


    pub_type: 杂志文章


    authors: Murat I,Ventura-Clapier R,Vassort G

    更新日期:1988-12-01 00:00:00

  • Neuropathic Allodynia Involves Spinal Neurexin-1β-dependent Neuroligin-1/Postsynaptic Density-95/NR2B Cascade in Rats.

    abstract:BACKGROUND:Neuroligin-1 (NL1) forms a complex with the presynaptic neurexin-1β (Nrx1b), regulating clustering of N-methyl-D-aspartate receptors with postsynaptic density-95 (PSD-95) to underlie learning-/memory-associated plasticity. Pain-related spinal neuroplasticity shares several common features with learning-/memo...


    pub_type: 杂志文章


    authors: Lin TB,Lai CY,Hsieh MC,Jiang JL,Cheng JK,Chau YP,Ruan T,Chen GD,Peng HY

    更新日期:2015-10-01 00:00:00

  • Safety assessment and pharmacokinetics of intrathecal methylprednisolone acetate in dogs.

    abstract:BACKGROUND:Intrathecal methylprednisolone acetate (MPA) has been used in patients with chronic pain syndromes. Its safety has been debated after reports of adverse events. No systematic preclinical evaluation of MPA has been reported. In the current study, the acute and long-term effects of intrathecal MPA on dog spina...


    pub_type: 杂志文章


    authors: Rijsdijk M,van Wijck AJ,Kalkman CJ,Meulenhoff PC,Grafe MR,Steinauer J,Yaksh TL

    更新日期:2012-01-01 00:00:00

  • Influence of administration rate on propofol plasma-effect site equilibration.

    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...


    pub_type: 杂志文章,随机对照试验


    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

  • Effect of spinal morphine after long-term potentiation of wide dynamic range neurones in the rat.

    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...


    pub_type: 杂志文章


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

    更新日期:2000-01-01 00:00:00

  • The cerebral and systemic hemodynamic and metabolic effects of desflurane-induced hypotension in dogs.

    abstract::The cerebral and systemic hemodynamic and metabolic effects of hypotension induced with desflurane were examined in 11 dogs. During a steady-state baseline period under 1 MAC desflurane (7.2%), the following were measured or derived: arterial, pulmonary artery, and pulmonary artery occlusion pressures; arterial, mixed...


    pub_type: 杂志文章


    authors: Milde LN,Milde JH

    更新日期:1991-03-01 00:00:00

  • Minute ventilation and oxygen consumption during labor with epidural analgesia.

    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...


    pub_type: 杂志文章


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

    更新日期:1983-11-01 00:00:00

  • Monitoring hepatic venous hemoglobin oxygen saturation in patients undergoing liver surgery.

    abstract::Hepatic venous oxygen saturation (ShvO2) was continuously monitored in 33 consecutive patients undergoing hepatic lobectomy. Fiberoptic pulmonary artery catheters were inserted into the hepatic vein (HV) and in the pulmonary artery through the right internal jugular vein before anesthetic induction. The success rate a...


    pub_type: 杂志文章


    authors: Kainuma M,Fujiwara Y,Kimura N,Shitaokoshi A,Nakashima K,Shimada Y

    更新日期:1991-01-01 00:00:00

  • Bupivacaine-induced cardiac arrhythmias in sheep.

    abstract::Controversy persists about the cardiac toxicity of bupivacaine if accidentally administered intravenously during regional anesthesia. Using awake, unanesthetized sheep, we evaluated the cardiac effects of low and high equivalent doses of lidocaine and bupivacaine given intravenously over 10 s. All animals convulsed wi...


    pub_type: 杂志文章


    authors: Kotelko DM,Shnider SM,Dailey PA,Brizgys RV,Levinson G,Shapiro WA,Koike M,Rosen MA

    更新日期:1984-01-01 00:00:00

  • Separate lung blood flow in anesthetized dogs: a comparative study between electromagnetometry and SF6 and CO2 elimination.

    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 ...


    pub_type: 杂志文章


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

    更新日期:1987-08-01 00:00:00

  • Patient selection for day case-eligible surgery: identifying those at high risk for major complications.

    abstract:BACKGROUND:Due to economic pressures and improvements in perioperative care, outpatient surgical procedures have become commonplace. However, risk factors for outpatient surgical morbidity and mortality remain unclear. There are no multicenter clinical data guiding patient selection for outpatient surgery. The authors ...


    pub_type: 杂志文章


    authors: Mathis MR,Naughton NN,Shanks AM,Freundlich RE,Pannucci CJ,Chu Y,Haus J,Morris M,Kheterpal S

    更新日期:2013-12-01 00:00:00

  • Selective metabolic activation of the hippocampus during lidocaine-induced pre-seizure activity.

    abstract::Neurophysiologic studies indicate that local anesthetic-induced seizures are generated in subcortical brain structures. The authors utilized a quantitative autoradiographic technique to measure cerebral metabolism during lidocaine-induced seizure activity in rats anesthetized with nitrous oxide. Local cerebral metabol...


    pub_type: 杂志文章


    authors: Ingvar M,Shapiro HM

    更新日期:1981-01-01 00:00:00

  • Combination of a δ-opioid Receptor Agonist and Loperamide Produces Peripherally-mediated Analgesic Synergy in Mice.

    abstract:BACKGROUND:The long-term use of opioids for analgesia carries significant risk for tolerance, addiction, and diversion. These adverse effects are largely mediated by μ-opioid receptors in the central nervous system. Based on the authors' previous observation that morphine and δ-opioid receptor agonists synergize in spi...


    pub_type: 杂志文章


    authors: Bruce DJ,Peterson CD,Kitto KF,Akgün E,Lazzaroni S,Portoghese PS,Fairbanks CA,Wilcox GL

    更新日期:2019-09-01 00:00:00

  • Clinical characteristics and biotransformation of sevoflurane in healthy human volunteers.

    abstract::Sevoflurane was submitted to phase-1 studies in man following extensive testing in animal species during maintenance, was administered with oxygen to produce one hour of anesthesia in six healthy adult male volunteers. Respiratory and cardiovascular functions, the electroencephalogram, arterial blood gases, blood sevo...


    pub_type: 杂志文章


    authors: Holaday DA,Smith FR

    更新日期:1981-02-01 00:00:00

  • Site of origin of halothane--epinephrine arrhythmia determined by direct and echocardiographic recordings.

    abstract::A constantly coupled bigeminal arrhythmia was induced in dogs anesthetized with thiopental-halothane by infusion of epinephrine (1 microgram.kg-1.min-1). The site of origin of the abnormal beat was localized to the interventricular septum by bipolar recordings from the left and right ventricular epicardium and two sit...


    pub_type: 杂志文章


    authors: Smith ER,Dresel PE

    更新日期:1982-08-01 00:00:00

  • Epidural catheter reconnection. Safe and unsafe practice.

    abstract:BACKGROUND:An in vitro model of epidural catheter contamination was used to determine if disconnected catheters can be safely reconnected. METHODS:Epidural catheters were filled with brain-heart infusion (BHI) broth or preservative-free saline containing 5 micrograms/ml fentanyl. Escherichia coli, Pseudomonas aerugino...


    pub_type: 杂志文章


    authors: Langevin PB,Gravenstein N,Langevin SO,Gulig PA

    更新日期:1996-10-01 00:00:00

  • Cardioprotective trafficking of caveolin to mitochondria is Gi-protein dependent.

    abstract:BACKGROUND:Caveolae are a nexus for protective signaling. Trafficking of caveolin to mitochondria is essential for adaptation to cellular stress though the trafficking mechanisms remain unknown. The authors hypothesized that G protein-coupled receptor/inhibitory G protein (Gi) activation leads to caveolin trafficking t...


    pub_type: 杂志文章


    authors: Wang J,Schilling JM,Niesman IR,Headrick JP,Finley JC,Kwan E,Patel PM,Head BP,Roth DM,Yue Y,Patel HH

    更新日期:2014-09-01 00:00:00

  • Enhanced cerebral blood flow autoregulation in the newborn piglet by d-tubocurarine and pancuronium but not by vecuronium.

    abstract::Neuromuscular blockers may affect cerebral blood flow (CBF) regulation in the newborn. We studied the effects of d-tubocurarine (0.1 mg.kg-1, n = 8), pancuronium (0.1 and 0.4 mg.kg-1, n = 6 and 7), and vecuronium (0.1 and 0.4 mg.kg-1, n = 6 and 7) on CBF measured over the same range of mean systemic blood pressure ([B...


    pub_type: 杂志文章


    authors: Chemtob S,Barna T,Beharry K,Aranda JV,Varma DR

    更新日期:1992-02-01 00:00:00

  • Neutrophil adhesion molecule expression is comparable in perinatal rabbits and humans.

    abstract:BACKGROUND:Human newborns, particularly those born before full term, are more susceptible to bacterial infections as a result of impaired host defense mechanisms. Compared with adults, circulating leukocytes from human newborns (preterm and full-term gestations) and newborn rabbits (full-term gestation) have low restin...


    pub_type: 杂志文章


    authors: Ramamoorthy C,Kovarik WD,Winn RK,Harlan JM,Sharar SR

    更新日期:1997-02-01 00:00:00

  • Thiopental pharmacodynamics. I. Defining the pseudo-steady-state serum concentration-EEG effect relationship.

    abstract::To assess depth of anesthesia for intravenous anesthetics using clinical stimuli and observed responses, it is necessary to achieve constant serum concentrations of drug that result in constant biophase or central nervous system concentrations. The goal of this investigation was to use a computer-controlled infusion p...


    pub_type: 杂志文章


    authors: Bührer M,Maitre PO,Hung OR,Ebling WF,Shafer SL,Stanski DR

    更新日期:1992-08-01 00:00:00

  • Predicting patient nonappearance for surgery as a scheduling strategy to optimize operating room utilization in a veterans' administration hospital.

    abstract:BACKGROUND:Previous attempts at improving operating room utilization have generally emphasized more accurate scheduling, starting the first case on time, and reducing turnover time. Surgical case cancellations have largely been ignored except for recommendations for preoperative screening and good physician-patient com...


    pub_type: 杂志文章


    authors: Basson MD,Butler TW,Verma H

    更新日期:2006-04-01 00:00:00

  • Neostigmine/glycopyrrolate administered after recovery from neuromuscular block increases upper airway collapsibility by decreasing genioglossus muscle activity in response to negative pharyngeal pressure.

    abstract:BACKGROUND:Reversal of residual neuromuscular blockade by acetylcholinesterase inhibitors (e.g., neostigmine) improves respiratory function. However, neostigmine may also impair muscle strength. We hypothesized that neostigmine administered after recovery of the train-of-four (TOF) ratio impairs upper airway integrity ...


    pub_type: 杂志文章


    authors: Herbstreit F,Zigrahn D,Ochterbeck C,Peters J,Eikermann M

    更新日期:2010-12-01 00:00:00

  • Physiologic and antinociceptive effects of intrathecal resiniferatoxin in a canine bone cancer model.

    abstract:BACKGROUND:Resiniferatoxin is a potent capsaicin analog. Intrathecal administration leads to selective, prolonged opening of the transient receptor potential V1 ion channel, which is localized mainly to C-fiber primary afferent nociceptive sensory neurons. Following work in laboratory animals, the authors explored the ...


    pub_type: 杂志文章


    authors: Brown DC,Iadarola MJ,Perkowski SZ,Erin H,Shofer F,Laszlo KJ,Olah Z,Mannes AJ

    更新日期:2005-11-01 00:00:00

  • Disuse atrophy with resistance to pancuronium.

    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...


    pub_type: 杂志文章


    authors: Gronert GA

    更新日期:1981-11-01 00:00:00

  • The sheath of the brachial plexus: fact or fiction?

    abstract:BACKGROUND:The concept of the axillary "sheath" has been a central tenet of brachial plexus regional anesthesia for many years. Recent investigations have cast doubt on its nature and existence. This study further examines the issue. METHODS:Computerized axial tomographic dye studies were performed using continuous ca...


    pub_type: 杂志文章


    authors: Cornish PB,Leaper C

    更新日期:2006-09-01 00:00:00

  • Continuous cardiac output in septic shock by simulating a model of the aortic input impedance: a comparison with bolus injection thermodilution.

    abstract:BACKGROUND:To compare continuous cardiac output obtained by simulation of an aortic input impedance model to bolus injection thermodilution (TDCO) in critically ill patients with septic shock. METHODS:In an open study, mechanically ventilated patients with septic shock were monitored for 1 (32 patients), 2 (15 patient...


    pub_type: 杂志文章


    authors: Jellema WT,Wesseling KH,Groeneveld AB,Stoutenbeek CP,Thijs LG,van Lieshout JJ

    更新日期:1999-05-01 00:00:00