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ketamine blood pressure

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https://www.readbyqxmd.com/read/28070653/impact-of-acute-changes-in-perfusion-index-and-blood-pressure-on-the-accuracy-of-non-invasive-continuous-hemoglobin-concentration-measurements-during-induction-of-anesthesia
#1
Junichi Saito, Masato Kitayama, Erika Amanai, Kentaro Toyooka, Kazuyoshi Hirota
PURPOSE: Several factors affect the accuracy of non-invasive continuous hemoglobin concentration (SpHb) measurements. We had previously shown an increase in the perfusion index (PI) following induction of anesthesia which was associated with an increase in the difference between SpHb and total hemoglobin (tHb) (SpHb-tHb). We hypothesized that blunting the increase in PI by maintaining blood pressure during induction of anesthesia would improve the agreement between SpHb and tHb measurements...
January 9, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28006946/a-novel-experimental-model-of-acute-respiratory-distress-syndrome-in-pig
#2
M Otáhal, M Mlček, I Vítková, O Kittnar
Acute respiratory distress syndrome (ARDS) is severe medical condition occurring in critically ill patients and with mortality of 33-52 % is one of the leading causes of death in critically ill patients. To better understand pathophysiology of ARDS and to verify novel therapeutical approaches a reliable animal model is needed. Therefore we have developed modified lavage model of ARDS in the pig. After premedication (ketamine and midazolam) 35 healthy pigs were anesthetized (propofol, midazolam, morphin, pipecuronium) and orotracheally intubated and ventilated...
December 22, 2016: Physiological Research
https://www.readbyqxmd.com/read/27999410/effects-of-quercetin-in-a-rat-model-of-hemorrhagic-traumatic-shock-and-reperfusion
#3
Virginia Chamorro, Rachele Pandolfi, Laura Moreno, Bianca Barreira, Andrea Martínez-Ramas, Daniel Morales-Cano, Jesús Ruiz-Cabello, José Angel Lorente, Juan Duarte, Ángel Cogolludo, José Luis Alvarez-Sala, Francisco Perez-Vizcaino
BACKGROUND: We hypothesized that treatment with quercetin could result in improved hemodynamics, lung inflammatory parameters and mortality in a rat model of hemorrhagic shock. METHODS: Rats were anesthetized (80 mg/kg ketamine plus 8 mg/kg xylazine i.p.). The protocol included laparotomy for 15 min (trauma), hemorrhagic shock (blood withdrawal to reduce the mean arterial pressure to 35 mmHg) for 75 min and resuscitation by re-infusion of all the shed blood plus lactate Ringer for 90 min...
December 20, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27966330/therapeutic-effects-of-intralipid-and-medialipid-emulsionsin-a-rat-model-of-verapamil-toxicity
#4
Fatma Akgün Şahin, Sıdıka Hülya Çelebi, İrfan Güngör, Demet Coşkun, Elif Ergüven Kaya
BACKGROUND/AIM: Lipid emulsions are promising as a potential new therapy for severe verapamil overdose. Our purpose is to draw attention to the choice of solution by investigating the efficacy of intralipid 20% or medialipid 20% in verapamil overdose. MATERIALS AND METHODS: Eighteen adult Sprague Dawley rats were randomly divided into three groups: control (saline; Group C), intralipid 20% (Group I), and medialipid 20% (Group M). Rats were anesthetized with ketamine...
November 17, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/27939800/changes-in-blood-pressure-and-heart-rate-during-sedation-with-ketamine-in-the-pediatric-ed
#5
Adam C Patterson, Shernaz A Wadia, Douglas J Lorenz, Michelle D Stevenson
BACKGROUND: Ketamine is commonly used in the emergency department for short, painful procedures. We describe changes in blood pressure (BP) and heart rate (HR) during procedural sedation with ketamine, as these changes have not been well described in children. METHODS: We performed a secondary analysis of a prospective, observational study involving children aged 8 to 18 years who received procedural sedation with ketamine in a pediatric emergency department. Serial vital signs and sedation scores were recorded from baseline until recovery from ketamine procedural sedation...
October 11, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27931320/constant-rate-infusion-of-dexmedetomidine-to-manage-thiopental-anesthesia-during-intracranial-surgery-in-cynomolgus-macaques-macaca-fascicularis
#6
Noemi Romagnoli, Alessandra Buonacucina, Carlotta Lambertini, Domenico Ventrella, Angelo Peli
Macaques (Macaca spp.) are often used as animal models in biomedical research involving a neurosurgical approach. The development of new anesthetic techniques is pivotal for these studies. Studies in human anesthesia for intracranial surgery have shown that dexmedetomidine infusion reduces the incidence of cardiocirculatory complications in the perioperative period, reduces the need for supplemental analgesia, and provides an analgesic effect analogous to that of remifentanil. Data regarding the anesthetic effects of dexmedetomidine infusion in NHP including Macaca spp...
November 2016: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/27901396/effects-of-dobutamine-hydrochloride-on-cardiovascular-function-in-horses-anesthetized-with-isoflurane-with-or-without-acepromazine-maleate-premedication
#7
RANDOMIZED CONTROLLED TRIAL
Mara F Schier, Anthea L Raisis, Cristy J Secombe, Giselle Hosgood, Gabrielle C Musk, Guy D Lester
OBJECTIVE To determine the effects of acepromazine maleate premedication on cardiovascular function before and after infusion of dobutamine hydrochloride for 30 minutes in isoflurane-anesthetized horses. ANIMALS 6 healthy adult horses. PROCEDURES Each horse was anesthetized once following premedication with acepromazine (0.02 mg/kg, IV) administered 30 minutes prior to anesthetic induction (ACP+ treatment) and once without premedication (ACP- treatment). Anesthesia was induced with IV administration of xylazine hydrochloride (0...
December 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27888525/breaking-sad-unleashing-the-breakthrough-potential-of-ketamine-s-rapid-antidepressant-effects
#8
David Feifel
Preclinical Research The surprising results of a small clinical trial on the effects of low dose ketamine, a 65-year old anesthetic drug that is also used off-label for chronic pain and recreationally as a club drug, in eight depressed subjects unleashed the most significant advance in antidepressant drug development in decades. That study and subsequent ones have demonstrated that low dose, infused ketamine is able to induce a remission of depression in patients who have failed conventional medications, within 24 h...
December 2016: Drug Development Research
https://www.readbyqxmd.com/read/27853681/sedative-and-analgesic-effects-of-propofol-fentanyl-versus-propofol-ketamine-during-endoscopic-retrograde-cholangiopancreatography-a-double-blind-randomized-clinical-trial
#9
Fakhroddin Bahrami Gorji, Parviz Amri, Javad Shokri, Hakimeh Alereza, Ali Bijani
BACKGROUND: Endoscopic retrograde cholangiopancreatography (ERCP) is a painful procedure that requires analgesia and sedation. OBJECTIVES: In this study, we compared the analgesic and sedative effects of propofol-ketamine versus propofol-fentanyl in patients undergoing ERCP. METHODS: In this clinical trial, 72 patients, aged 30 - 70 years old, who were candidates for ERCP were randomly divided into two groups. Before the start of ERCP, both groups received midazolam 0...
October 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27754129/os-25-04-the-changes-of-arterial-stiffness-monitored-with-cardio-ankle-vascular-index-cavi-during-raised-intracranial-pressure-in-the-rabbit
#10
Chikao Miyazaki, Mao Takahashi, Kazuhiro Shimizu, Tatsuo Chiba, Takenori Morisita, Tomoyuki Yamamoto, Nobuo Sugo, Akira Takahara, Kohji Shirai
OBJECTIVE: Cardio ankle vascular index (CAVI) is reflecting stiffness of the arterial tree from the origin of aorta to the ankles. We observed elevated CAVI in patients who suffered from apoplexy attack. To clarify the role and the mechanism by which arterial stiffness elevated just after apoplexy attack, the effect of enhanced intracranial pressure (ICP) by injecting saline into the cisterna magna of the rabbit on blood pressure, CAVI and cervical blood flow, were studied. Furthermore the role of sympathetic nerve was studied...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27694213/effects-of-various-types-of-anesthesia-on-hemodynamics-cardiac-function-and-glucose-and-lipid-metabolism-in-rats
#11
Yusuke Sano, Shogo Ito, Mamoru Yoneda, Kai Nagasawa, Natsumi Matsuura, Yuichiro Yamada, Ayako Uchinaka, Yasuko K Bando, Toyoaki Murohara, Kohzo Nagata
Anesthesia can affect respiratory, circulatory, and endocrine systems but is necessary for certain experimental procedures such as echocardiography and blood sampling in small animals. We have now investigated the effects of four types of anesthesia [pentobarbital sodium (PENT), ketamine-xylazine (K/X), and low- or high-dose isoflurane (ISO)] on hemodynamics, cardiac function, and glucose and lipid metabolism in Sprague-Dawley rats. Aortic pressure, heart rate, and echocardiographic parameters were measured at various time points up to 45 min after the induction of anesthesia, and blood was then collected for measurement of parameters of glucose and lipid metabolism...
December 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27687921/effects-of-preoperative-carprofen-on-cardio-respiratory-hormonal-and-metabolic-stress-response-in-calves-during-umbilical-surgery-under-isoflurane-inhalation-anaesthesia
#12
I Schulze, E M Poos, H Meyer, A K List, S B R Kaestner, J Rehage
The aim of this study was to examine the effects of preoperative carprofen on the cardiorespiratory, hormonal and metabolic stress response during umbilical surgery under isoflurane anaesthesia combined with local anaesthesia, in calves. A randomised, blinded experimental study was conducted in 24 calves. Carprofen (n = 12; 1.4 mg/kg) or physiological saline solution (controls; n = 12) was administered 1 h prior to surgery. Anaesthesia was induced with xylazine (0.1 mg/kg, IM) and, after the onset of sedation (i...
October 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27687359/a-comparison-of-prophylactic-use-of-meperidine-meperidine-plus-dexamethasone-and-ketamine-plus-midazolam-for-preventing-of-shivering-during-spinal-anesthesia-a-randomized-double-blind-placebo-controlled-study
#13
Ali Solhpour, Alireza Jafari, Masoud Hashemi, Behnam Hosseini, Sajad Razavi, Gholamreza Mohseni, Maryam Vosoughian, Faranak Behnaz, Reza Amin Nejad, Mohamad Amin Pourhoseingholi, Fereshteh Soltani
STUDY OBJECTIVES: The aim of this study is to compare the efficacy of combination of meperidine and dexamethasone with that of placebo, meperidine alone, and the combination of ketamine and midazolam in preventing shivering during spinal anesthesia. DESIGN: This is a prospective, placebo-controlled study. SETTING: The setting is at an operating room of a university-based teaching hospital. PATIENTS: Two hundred American Society of Anesthesiologists I and II patients undergoing orthopedic and urologic surgery under spinal anesthesia were included...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27643056/os-25-04-the-changes-of-arterial-stiffness-monitored-with-cardio-ankle-vascular-index-cavi-during-raised-intracranial-pressure-in-the-rabbit
#14
Chikao Miyazaki, Mao Takahashi, Kazuhiro Shimizu, Tatsuo Chiba, Takenori Morisita, Tomoyuki Yamamoto, Nobuo Sugo, Akira Takahara, Kohji Shirai
OBJECTIVE: Cardio ankle vascular index (CAVI) is reflecting stiffness of the arterial tree from the origin of aorta to the ankles. We observed elevated CAVI in patients who suffered from apoplexy attack. To clarify the role and the mechanism by which arterial stiffness elevated just after apoplexy attack, the effect of enhanced intracranial pressure (ICP) by injecting saline into the cisterna magna of the rabbit on blood pressure, CAVI and cervical blood flow, were studied. Furthermore the role of sympathetic nerve was studied...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27597770/ketamine-modulates-fetal-hemodynamic-and-endocrine-responses-to-umbilical-cord-occlusion
#15
Miguel A Zarate, Eileen I Chang, Andrew Antolic, Charles E Wood
Umbilical cord occlusion (UCO) is a hypoxic insult that has been used to model birth asphyxia and umbilical cord compression in utero. UCO triggers vigorous neural and endocrine responses that include increased plasma ACTH and cortisol concentrations, increased blood pressure (BP), and decreased heart rate (HR). We have previously reported that ketamine, a noncompetitive N-methyl-D-aspartate receptor antagonist, can modify the fetal hemodynamic and ACTH responses to ventilatory hypoxia and cerebral ischemia-reperfusion...
September 2016: Physiological Reports
https://www.readbyqxmd.com/read/27481042/mesenchymal-stem-cells-protect-against-the-tissue-fibrosis-of-ketamine-induced-cystitis-in-rat-bladder
#16
Aram Kim, Hwan Yeul Yu, Jinbeom Heo, Miho Song, Jung-Hyun Shin, Jisun Lim, Soo-Jung Yoon, YongHwan Kim, Seungun Lee, Seong Who Kim, Wonil Oh, Soo Jin Choi, Dong-Myung Shin, Myung-Soo Choo
Abuse of the hallucinogenic drug ketamine promotes the development of lower urinary tract symptoms that resemble interstitial cystitis. The pathophysiology of ketamine-induced cystitis (KC) is largely unknown and effective therapies are lacking. Here, using a KC rat model, we show the therapeutic effects of human umbilical cord-blood (UCB)-derived mesenchymal stem cells (MSCs). Daily injection of ketamine to Sprague-Dawley rats for 2-weeks resulted in defective bladder function, indicated by irregular voiding frequency, increased maximum contraction pressure, and decreased intercontraction intervals and bladder capacity...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27471314/clonidine-and-ketamine-for-stable-hemodynamics-in-off-pump-coronary-artery-bypass
#17
Jigar Patel, Rajesh Thosani, Jignesh Kothari, Pankaj Garg, Himani Pandya
BACKGROUND: The current era of fast-track extubation and faster recovery after cardiac surgery requires agents that provide perioperative sedation, suppress sympathetic response, reduce opioid requirement, and maintain hemodynamic stability. METHODS: In a prospective randomized double-blind study, 75 off-pump coronary artery bypass patients were divided into 3 groups of 25 each: group A had clonidine 1 µg·kg(-1), group B had clonidine 1 µg·kg(-1) and ketamine 1 mg·kg(-1), and group C had a saline placebo...
September 2016: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/27401921/comparison-of-intramuscular-alfaxalone-and-ketamine-combined-with-dexmedetomidine-and-butorphanol-for-castration-in-cats
#18
Latifa Khenissi, Olga Nikolayenkova-Topie, Ségolène Broussaud, Gwenola Touzot-Jourde
OBJECTIVES: Cardiorespiratory parameters and anaesthesia quality in cats anaesthetised with either intramuscular (IM) alfaxalone or ketamine both combined with dexmedetomidine and butorphanol for castration were evaluated. METHODS: Thirty-two client-owned cats were randomly assigned to receive either alfaxalone (A; 3 mg/kg IM) or ketamine (K; 5 mg/kg IM), combined with dexmedetomidine (10 μg/kg) and butorphanol (0.2 mg/kg). Heart rate (HR), respiratory rate (RR) and rectal temperature (T°) were recorded prior to drug administration...
July 11, 2016: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/27374385/clinical-evaluation-of-intranasal-medetomidine-ketamine-and-medetomidine-s-ketamine-for-induction-of-anaesthesia-in-rabbits-in-two-centres-with-two-different-administration-techniques
#19
Linda C Weiland, Katharina Kluge, Annette Pn Kutter, Peter W Kronen
OBJECTIVE: The aim was to compare efficacy and side effects of induction with medetomidine-ketamine or medetomidine-S(+)-ketamine by intranasal (IN) instillation in rabbits and to evaluate both protocols during subsequent isoflurane anaesthesia. STUDY DESIGN: Prospective, blinded, randomized experimental study in two centres. ANIMALS: Eighty-three healthy New Zealand White rabbits undergoing tibial or ulnar osteotomy. METHODS: Medetomidine (0...
July 4, 2016: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/27366520/effect-of-ketamine-thiopental-and-ketamine-thiopental-combination-during-electroconvulsive-therapy-for-depression
#20
Özlem Özkan Kuşçu, Feride Karacaer, Ebru Biricik, Ersel Güleç, Lut Tamam, Yasemin Güneş
OBJECTIVE: We aimed to evaluate the effect of anaesthesia with thiopental (4 mg kg(-1)), ketamine (1 mg kg(-1)) and ketamine-thiopental (1 mg kg(-1) and 4 mg kg(-1), respectively) combination during electroconvulsive therapy (ECT) on the Hamilton Depression Rating Scale (HDRS) and Hamilton Anxiety Rating Scale (HAM-A) and haemodynamic variables in patients with resistant major depression. METHODS: Patients with HDRS scores above 17 were included. The patients were randomly divided into three groups according to the anaesthesia used...
October 2015: Turkish Journal of Anaesthesiology and Reanimation
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