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https://www.readbyqxmd.com/read/29277883/effects-of-different-anesthetic-agents-on-surgical-site-hemorrhage-during-circumcision
#1
Derya Karasu, Canan Yilmaz, Seyda Efsun Ozgunay, Isra Karaduman, Demet Ozer, Mete Kaya
PURPOSE: To investigate the effects of ketamine+midazolam and propofol+sevoflurane anesthesia on surgical site hemorrhage during circumcision procedures. MATERIALS AND METHODS: The boys undergoing circumcision surgery were included in the study. The patients were divided into two groups. In Group 1 (n = 50), 0.01 mg/kg midazolam and 2 mg/kg IV ketamine were administered. In Group 2 (n = 50), 1 ?g/kg fentanyl, 1 mg/kg lidocaine 2%, and 2-3 mg/kg IV propofol were administered, and patency of airway was ensured with a laryngeal mask airway...
December 26, 2017: Urology Journal
https://www.readbyqxmd.com/read/29209787/-different-levels-of-experience-with-anesthetic-agents-of-german-emergency-physicians-results-of-an-online-survey
#2
A Luckscheiter, M Fischer, W Zink
BACKGROUND AND OBJECTIVE: In 2015 practice management guidelines on prehospital emergency anesthesia in adults were published in Germany. The aim of the present study was to evaluate whether emergency physicians follow these guidelines in daily practice and to assess their level of experience with the use of anesthetic agents. MATERIAL AND METHODS: In an online survey the way of induction of preclinical anesthesia (including preoxygenation time and applied monitoring techniques) was assessed with the help of virtual scenarios based on the guidelines...
December 5, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/29192545/cardiovascular-respiratory-and-sedative-effects-of-intramuscular-alfaxalone-butorphanol-and-dexmedetomidine-compared-with-ketamine-butorphanol-and-dexmedetomidine-in-healthy-cats
#3
Jeannette Cremer, Carolina H Riccó
Objectives The aim of the study was to evaluate the cardiorespiratory effects, quality of sedation and recovery of intramuscular alfaxalone-dexmedetomidine-butorphanol (ADB) and ketamine-dexmedetomidine-butorphanol (KDB), in cats. Methods Nine adult, healthy cats (6.63 ± 1.42 kg) were enrolled in a blinded, randomized, crossover experimental design. Cats were sedated twice intramuscularly, once with ADB (alfaxalone 1 mg/kg, dexmedetomidine 0.005 mg/kg, butorphanol 0.2 mg/kg), and once with KDB (ketamine 5 mg/kg, dexmedetomidine 0...
November 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29186909/ketamine-a-clinically-used-anesthetic-inhibits-vascular-smooth-muscle-cell-proliferation-via-pp2a-activated-pi3k-akt-erk-inhibition
#4
Yi Chang, Jiun-Yi Li, Thanasekaran Jayakumar, Shou-Huang Hung, Wei-Cheng Lee, Manjunath Manubolu, Joen-Rong Sheu, Ming-Jen Hsu
Abnormal proliferation of vascular smooth muscle cells (VSMCs) gives rise to major pathological processes involved in the development of cardiovascular diseases. The use of anti-proliferative agents for VSMCs offers potential for the treatment of vascular disorders. Intravenous anesthetics are firmly established to have direct effects on VSMCs, resulting in modulation of blood pressure. Ketamine has been used for many years in the intensive care unit (ICU) for sedation, and has recently been considered for adjunctive therapy...
November 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29184740/can-friedberg-s-triad-solve-persistent-anesthesia-problems-over-medication-pain-management-postoperative-nausea-and-vomiting
#5
Barry L Friedberg
Friedberg's Triad is (1) measure the brain; (2) preempt the pain; (3) emetic drugs abstain. Persistent anesthesia problems include over- and under-medication, postoperative pain management, and postoperative nausea and vomiting. Inspired by Vinnik's diazepam-ketamine paradigm, Friedberg's propofol ketamine paradigm was first published in 1993. The 1997 addition of the bispectral (BIS) index brain monitor made the propofol ketamine paradigm numerically reproducible. The 1998 addition of the frontalis electromyogram (EMG) as a secondary trend to the BIS transformed the time-delayed BIS monitor into a real-time, extremely useful device...
October 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29183321/effects-of-controlled-hypoxemia-or-hypovolemia-on-global-and-intestinal-oxygenation-and-perfusion-in-isoflurane-anesthetized-horses-receiving-an-alpha-2-agonist-infusion
#6
Klaus Hopster, Liza Wittenberg-Voges, Florian Geburek, Charlotte Hopster-Iversen, Sabine B R Kästner
BACKGROUND: Aim of this prospective experimental study was to assess effects of systemic hypoxemia and hypovolemia on global and gastrointestinal oxygenation and perfusion in anesthetized horses. Therefore, we anesthetized twelve systemically healthy warmblood horses using either xylazine or dexmedetomidine for premedication and midazolam and ketamine for induction. Anesthesia was maintained using isoflurane in oxygen with either xylazine or dexmedetomidine and horses were ventilated to normocapnia...
November 28, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29167072/induction-of-anaesthesia-with-remifentanil-after-bolus-midazolam-administration-in-landrace-large-white-swine
#7
Argyro Zacharioudaki, Pavlos Lelovas, Theodoros N Sergentanis, George Karlis, Axel K Hansen, Apostolos Papalois, Theodoros Xanthos
OBJECTIVE: To investigate an alternative combination for anaesthesia induction in swine. STUDY DESIGN: Randomized, 'blinded' experimental study. ANIMALS: Forty-five Landrace/Large White swine weighing 20.0±1.5 kg. METHODS: Pulse oximetry, heart rate (HR) and blood pressure were measured after premedication with ketamine, midazolam and atropine as well as after intubation following induction with a fixed dose of 0.2 mg kg-1 midazolam combined with 1, 2, 3, 4 or 5 μg kg-1 remifentanil (groups R1, R2, R3, R4 and R5, respectively)...
April 17, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29134982/electrocardiographic-and-blood-pressure-measurements-in-captive-african-lions-panthera-leo-immobilized-with-xylazine-ketamine-combination
#8
T O Omóbòwálé, P I Otuh, O A Adejumobi, J O Abiola, T Adebiyi, B N Ogunro, A O Adeogun
Electrocardiographic and blood pressure measurements are extremely valuable diagnostic tools in the evaluationof the cardiovascular system of living animals. In this study, 6-lead electrocardiograms were recorded from five male captiveAfrican lions (Panthera leo). Also, blood pressure measurements were recorded and compared from three different sites;fore limb, hind limb and the tail, were recorded. Immobilization was done with a combination of Ketamine Hydrochloride(10mg/kg) and Xylazine (3mg/kg). Measurements were recorded as mean ± standard deviation...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29099972/factors-influencing-the-cardiovascular-response-to-subanesthetic-ketamine-a-randomized-placebo-controlled-trial
#9
Thomas Liebe, Shijia Li, Anton Lord, Lejla Colic, Anna Linda Krause, Anil Batra, Moritz A Kretzschmar, Catherine M Sweeney-Reed, Gusalija Behnisch, Björn H Schott, Martin Walter
Background: The increasing use of ketamine as a potential rapid-onset antidepressant necessitates a better understanding of its effects on blood pressure and heart rate, well-known side effects at higher doses. For the subanesthetic dose used for depression, potential predictors of these cardiovascular effects are important factors influencing clinical decisions. Since ketamine influences the sympathetic nervous system, we investigated the impact of autonomic nervous system-related factors on the cardiovascular response: a genetic polymorphism in the norepinephrine transporter and gender effects...
November 1, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29081581/xylazine-infusion-in-isoflurane-anesthetized-and-ventilated-healthy-horses-effects-on-cardiovascular-parameters-and-intestinal-perfusion
#10
Klaus Hopster, Liza Wittenberg-Voges, Sabine B R Kästner
To investigate the effects of a xylazine infusion during isoflurane anesthesia on global perfusion parameters and gastrointestinal oxygenation and microperfusion, 8 adult warmblood horses were sedated with xylazine and anesthesia induced with midazolam and ketamine. Horses were mechanically ventilated during anesthesia. After 3 h of stable isoflurane anesthesia (FEIso 1.3 Vol %), a xylazine infusion with 1 mg/kg body weight (BW) per hour was started for 1 h and then stopped. Before, during, and after xylazine infusion, heart rate (HR), arterial blood pressure (MAP), cardiac output (CO), central venous pressure (CVP), and pulmonary artery pressure (PAP) were measured and systemic vascular resistance (SVR) was calculated...
October 2017: Canadian Journal of Veterinary Research, Revue Canadienne de Recherche Vétérinaire
https://www.readbyqxmd.com/read/29076369/cardiovascular-effects-of-premedication-with-medetomidine-alone-and-in-combination-with-mk-467-or-glycopyrrolate-in-dogs-subsequently-anesthetized-with-isoflurane
#11
Kati M Salla, Cosmin I Tuns, Rachel C Bennett, Marja R Raekallio, Mika Scheinin, Erja Kuusela, Outi M Vainio
OBJECTIVE To compare cardiovascular effects of premedication with medetomidine alone and with each of 3 doses of MK-467 or after glycopyrrolate in dogs subsequently anesthetized with isoflurane. ANIMALS 8 healthy purpose-bred 5-year-old Beagles. PROCEDURES In a randomized crossover study, each dog received 5 premedication protocols (medetomidine [10 μg/kg, IV] alone [MED] and in combination with MK-467 at doses of 50 [MMK50], 100 [MMK100], and 150 [MMK150] μg/kg and 15 minutes after glycopyrrolate [10 μg/kg, SC; MGP]), with at least 14 days between treatments...
November 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29075764/the-effect-of-acutely-elevated-intraocular-pressure-on-the-functional-and-blood-flow-responses-of-the-rat-retina-to-flicker-stimulation
#12
Bingyao Tan, Benjamin MacLellan, Erik Mason, Kostadinka K Bizheva
Purpose: To evaluate the effect of acutely elevated intraocular pressure (IOP) on the functional and blood flow responses of the rat retina to flicker stimulation. Methods: Brown Norway (n = 15) rats were dark-adapted before ketamine/xylazine anesthesia. IOP was raised acutely in one eye to ∼45 mm Hg with a vascular loop. In 11 rats, white light flicker stimulus (10 Hz, 2 seconds duration, 0.80 log scotopic cd·s/m2) was applied before and during IOP elevation, and 10 minutes after loop removal...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29037800/clinical-comparison-of-dexmedetomidine-and-medetomidine-for-isoflurane-balanced-anaesthesia-in-horses
#13
Muriel Sacks, Simone K Ringer, Andrea S Bischofberger, Sabrina M Berchtold, Regula Bettschart-Wolfensberger
OBJECTIVE: To compare the effects of two balanced anaesthetic protocols (isoflurane-dexmedetomidine versus medetomidine) on sedation, cardiopulmonary function and recovery in horses. STUDY DESIGN: Prospective, blinded, randomized clinical study. ANIMALS: Sixty healthy adult warm blood horses undergoing elective surgery. METHODS: Thirty horses each were sedated with dexmedetomidine 3.5 μg kg(-1) (group DEX) or medetomidine 7 μg kg(-1) (group MED) intravenously...
April 26, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29026385/a-randomized-controlled-trial-to-assess-the-effect-of-a-ketamine-infusion-on-tourniquet-hypertension-during-general-anaesthesia-in-patients-undergoing-upper-and-lower-limb-surgery
#14
Joyce Ongaya, Vitalis Mung'ayi, Thikra Sharif, Jimmie Kabugi
BACKGROUND: Tourniquet hypertension arising from tourniquet inflation remains a primary concern to the anaesthetist. One drug commonly used to manage tourniquet hypertension is ketamine. No studies have examined the effect of ketamine on tourniquet hypertension for a period of more than one hour or an infusion of the same. OBJECTIVE: To compare the effect of an intravenous infusion of ketamine versus placebo on tourniquet induced hypertension in patients undergoing upper and lower limb surgery under general anaesthesia...
March 2017: African Health Sciences
https://www.readbyqxmd.com/read/29019444/evaluation-of-intraoperative-analgesia-provided-by-incisional-lidocaine-and-bupivacaine-in-cats-undergoing-ovariohysterectomy
#15
David Vicente, Annika Bergström
Objectives The objective of this study was to assess the intraoperative analgesic effect of preoperative infiltration of the incision site with lidocaine or a mixture of lidocaine with bupivacaine in cats undergoing ovariohysterectomy (OHE). Methods This was a prospective, randomised clinical study. Healthy female intact cats (n = 75) undergoing OHE under medetomidine-ketamine-buprenorphine anaesthesia were assigned randomly into three treatment groups (n = 25 per group) to receive one of two local anaesthesia protocols or placebo preoperatively in the midline incision: lidocaine 1...
October 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28955248/aicar-administration-attenuates-hemorrhagic-hyperglycemia-and-lowers-oxygen-debt-in-anesthetized-male-rabbits
#16
Yi Huang, Paul H Ratz, Amy S Miner, Victoria A Locke, Grace Chen, Yang Chen, Robert W Barbee
Background: Many strategies have been utilized to treat traumatic shock via improved oxygen delivery (DO2), while fewer have been used to in an attempt to reduce oxygen demand (VO2). The cellular energy sensor 5' adenosine monophosphate-activated protein kinase (AMPK) has the potential to modulate both whole-body DO2 and VO2. Therefore, we determined the effect of the AMPK activator AICAR (5-aminoimidazole-4-carboxamide 1-β-D-ribonucleoside) given acutely or chronically on key metabolites, hemodynamics, and oxygen consumption/delivery before and during hemorrhage in anesthetized male rabbits...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28928558/oral-clonidine-premedication-attenuates-hemodynamic-responses-of-ketamine-during-total-intravenous-anesthesia
#17
Pulak Tosh, Sunil Rajan, Nitu Puthenveettil, Lakshmi Kumar
BACKGROUND: The most commonly used drug for total intravenous anesthesia (TIVA) is ketamine which results in cardiovascular stimulation. AIMS: The primary aim of this study was to assess the effect of oral clonidine premedication on attenuating the hemodynamic responses following ketamine administration. SETTINGS AND DESIGNS: This was a prospective, observational, comparative study conducted in a tertiary care institution. SUBJECTS AND METHODS: A total of 40 female patients aged 18-55 years who were posted for elective short gynecological procedures under TIVA were recruited for this study...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28920777/heart-rate-and-indirect-blood-pressure-responses-to-four-different-field-anesthetic-protocols-in-wild-born-captive-chimpanzees-pan-troglodytes
#18
Rebeca Atencia, Eric J Stöhr, Aimee L Drane, Mike Stembridge, Glyn Howatson, Pablo Rodriguez Lopez Del Rio, Yedra Feltrer, Babila Tafon, Sharon Redrobe, Bruce Peck, Jaclyn Eng, Steve Unwin, Carlos R Sanchez, Rob E Shave
Limited data are available on hemodynamic responses to anesthetic protocols in wild-born chimpanzees (Pan troglodytes). Accordingly, this study characterized the heart rate (HR) and blood pressure responses to four anesthetic protocols in 176 clinically healthy, wild-born chimpanzees undergoing routine health assessments. Animals were anesthetized with medetomidine-ketamine (MK) (n = 101), tiletamine-zolazepam (TZ) (n = 30), tiletamine-zolazepam-medetomidine (TZM) (n = 24), or medetomidine-ketamine (maintained with isoflurane) (MKI) (n = 21)...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28889210/ketamine-and-midazolam-differently-impact-post-intubation-hemodynamic-profile-when-used-as-induction-agents-during-emergency-airway-management-in-hemodynamically-stable-patients-with-st-elevation-myocardial-infarction
#19
Marco Zuin, Gianluca Rigatelli, Fabio Dell'Avvocata, Giuseppe Faggian, Luca Conte, Sara Giatti, Flavio Michielan, Loris Roncon
We investigated the incidence of post-intubation hypotension (PIH) in hemodynamically stable patients with STEMI requiring rapid sequences intubation (RSI) and medicated with ketamine or midazolam as induction agent. STEMI patients admitted between 1st January 2009 and 1st January 2017 who did not receive any type of inotropic support before the endotracheal intubation (ETI) was reviewed. PIH was defined as a reduction greater than 20% or a drop of systolic blood pressure (SBP) below 90 mmHg within 10 min from the administration of the induction agent [ketamine (1 mg/kg) or midazolam (0...
September 9, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28856576/changes-in-transcranial-motor-evoked-potentials-during-hemorrhage-are-associated-with-increased-serum-propofol-concentrations
#20
Jeremy A Lieberman, John Feiner, Mark Rollins, Russ Lyon
Transcranial motor evoked potentials (TcMEPs) monitor the integrity of the spinal cord during spine surgery. Propofol-based anesthesia is favored in order to enhance TcMEP quality. During intraoperative hemorrhage, TcMEP amplitudes may be reduced. The serum concentration of propofol may increase during hemorrhage. No study has determined whether changes in TcMEPs due to hemorrhage are related to changes in propofol blood levels. We monitored TcMEPs, mean arterial pressure (MAP), and cardiac output (CO) and hemoglobin in pigs (n = 6) undergoing controlled progressive hemorrhage during a standardized anesthetic with infusions of propofol, ketamine, and fentanyl...
August 30, 2017: Journal of Clinical Monitoring and Computing
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