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Anaesthesia Cardiovascular

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https://www.readbyqxmd.com/read/28734021/effect-of-fixed-value-positive-end-expiratory-pressure-valves-on-canine-thoracic-volume-and-atelectasis
#1
A Allison, X Huizing, C Jolliffe, I Schaafsma
OBJECTIVES: The objective of this study was to investigate whether a fixed 10 cm H2 O positive end-expiratory pressure valve would increase the aeration of, and reduce atelectasis formation in, the lungs after induction of anaesthesia in dogs undergoing thoracic CT. MATERIALS AND METHODS: 28 dogs were paired based on breed, bodyweight and body condition score and then randomly allocated to either Group Z (0 cm H2 O) or Group P (10 cm H2 O positive end-expiratory pressure valve) immediately after the induction of anaesthesia...
July 22, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28731926/history-of-anaesthesia-the-ketamine-story-past-present-and-future
#2
Georges Mion
: Ketamine's history begins in the 1950s in Detroit, Michigan, at Parke-Davis Laboratories. On 26 March 1956, Harold V. Maddox synthesised phencyclidine or PCP. Domino studied PCP effects in animals and in 1958, Greifenstein made the first trials of PCP in humans under the name of Sernyl. Sernyl did not cause depression of cardiovascular and respiratory functions, but elicited severe excitation with a very prolonged postoperative recovery. Because of its psychedelic effects, it became a street drug under the name of 'angel dust' and was placed on schedule II of Federal Controlled Substance Act (CSA) in 1978...
July 20, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28716685/the-use-of-alfaxalone-for-premedication-induction-and-maintenance-of-anaesthesia-in-pigs-a-pilot-study
#3
Sarah E Bigby, Jennifer E Carter, Sébastien Bauquier, Thierry Beths
OBJECTIVE: The evaluation of alfaxalone as a premedication agent and intravenous anaesthetic in pigs. STUDY DESIGN: Prospective, clinical trial. ANIMALS: Nine healthy, 6-8-week-old female Landrace pigs weighing 22.2 ± 1.0 kg, undergoing epidural catheter placement. METHODS: All pigs were premedicated with 4 mg kg(-1) alfaxalone, 40 μg kg(-1) medetomidine and 0.4 mg kg(-1) butorphanol administered in the cervical musculature...
March 21, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28710899/effects-of-dobutamine-dopamine-phenylephrine-and-noradrenaline-on-systemic-haemodynamics-and-intestinal-perfusion-in-isoflurane-anaesthetised-horses
#4
C Dancker, K Hopster, K Rohn, S B Kästner
BACKGROUND: In the horse, effects of cardiovascular-active drugs on local perfusion of the gastrointestinal tract are poorly understood. OBJECTIVES: To determine the effect of drugs commonly used to support blood pressure, on local intestinal blood flow and tissue oxygenation under isoflurane anaesthesia. STUDY DESIGN: In vivo randomised crossover experiment METHODS: Ten horses were anaesthetised with isoflurane. After 90 minutes of equilibration three doses (μg/kg bwt/min) of dobutamine (DOB 0...
July 15, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28707209/anaesthetic-preparation-of-obese-patients-current-status-on-optimal-work-up
#5
REVIEW
Asta Lukosiute, Anil Karmali, Jonathan Mark Cousins
PURPOSE OF REVIEW: With the prevalence of obesity rapidly growing, bariatric anaesthesia becomes everyday anaesthesia rather than a subspecialty. In this review, we are aiming to draw attention to this complex group of patients and their comorbidities, relevant to everyday practice for contemporary anaesthetists. RECENT FINDINGS: We wanted to focus greatly on sleep-related breathing disorders, because preoperative screening, diagnosis and treatment of the aforementioned make a huge impact in the improvement of preoperative morbidity and mortality, including positive effects on the cardiovascular system...
July 13, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/28683723/case-report-anaesthetic-management-of-radical-gastrectomy-for-gastric-cancer-associated-with-anti-n-methyl-d-aspartate-receptor-encephalitis
#6
Lei Ding, Hongyu Tan, Ziyu Li, Jiafu Ji, Xuejun Song
BACKGROUND: Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a rare neurological disorder that is caused by the production of antibodies against NMDARs. As many anaesthetic drugs interact with NMDARs and may worsen the disease and because the disease poses risks, such as cardiovascular events, hyperthermia and respiratory insufficiency, while under anaesthesia, administering anaesthesia to patients with this disorder is clinically challenging. CASE PRESENTATION: A 55-year-old man with gastric cancer associated with anti-NMDAR encephalitis who was diagnosed 8 months prior was admitted to Peking University Cancer Hospital for tumour resection...
July 6, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28658798/anti-atherosclerotic-potential-of-aqueous-extract-of-cinnamomum-zeylanicum-bark-against-glucocorticoid-induced-atherosclerosis-in-wistar-rats
#7
Im Nagendra Nayak, Rajasekhar Chinta, Raghu Jetti
INTRODUCTION: Atherosclerosis is one of the major causes of disability of blood vessels which can result in development of many cardiovascular disorders. There is a strong association between atherosclerosis and insulin resistance and dyslipidemia. AIM: To study the anti-atherosclerotic potential of C. zeylanicum bark extract in insulin resistance associated atherosclerosis and worsened Atherogenic Index (AI) associated with dyslipidemia, which are the predominant complications of steroid diabetes in Wistar rats...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28638060/epidural-dexmedetomidine-reduces-the-requirement-of-propofol-during-total-intravenous-anaesthesia-and-improves-analgesia-after-surgery-in-patients-undergoing-open-thoracic-surgery
#8
Xianzhang Zeng, Jingjing Jiang, Lingling Yang, Wengang Ding
The aim of this study was to assess the systemic and analgesic effects of epidural dexmedetomidine in thoracic epidural anaesthesia (TEA) combined with total intravenous anaesthesia during thoracic surgery. Seventy-one patients undergoing open thoracotomy were included in this study and randomly divided into three groups: Control group (Group C): patients received TEA with levobupivacaine alone and were intravenously infused with saline; Epidural group (Group E): patients received TEA with levobupivacaine and dexmedetomidine, and were intravenously infused with saline; Intravenous group (group V): patients received TEA with levobupivacaine alone and were intravenously infused with dexmedetomidine...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28617680/pulse-photoplethysmographic-amplitude-and-heart-rate-variability-during-laparoscopic-cholecystectomy-a-prospective-observational-study
#9
Riccardo Colombo, Ferdinando Raimondi, Alberto Corona, Andrea Marchi, Beatrice Borghi, Simone Pellegrin, Paola Bergomi, Tommaso Fossali, Stefano Guzzetti, Alberto Porta
BACKGROUND: Surgical stress affects the autonomic nervous system by increasing sympathetic outflow. One method of monitoring sympathetic activity is pulse photoplethysmographic analysis. From this two indices can be derived - autonomic nervous system state (ANSS) and ANSS index (ANSSi). It has recently been claimed that these indices can be used to measure sympathetic activity in anaesthetised patients, but their validity has not yet been demonstrated. OBJECTIVE: To measure changes in pulse photoplethysmographic indices and determine any agreement with autonomic nervous system modulation of the cardiovascular system in healthy study participants during surgery under general anaesthesia...
August 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28590308/perioperative-factors-related-to-the-severity-of-vocal-cord-paralysis-after-thoracic-cardiovascular-surgery-a-retrospective-review
#10
Hiroki Taenaka, Sho Carl Shibata, Kenta Okitsu, Takeshi Iritakenishi, Tatsuyuki Imada, Akinori Uchiyama, Yuji Fujino
BACKGROUND: Vocal cord paralysis (VCP) is a rare complication of thoracic cardiovascular surgery. In severe cases, life-threatening airway obstruction may occur. OBJECTIVE: To evaluate the incidence and severity of VCP among patients who underwent thoracic cardiovascular surgery and to identify possible risk factors. DESIGN: Single-centre retrospective review of adult patients. SETTING: Osaka University Hospital, Suita, Japan, from January 2013 to August 2015...
July 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28586614/frequency-indications-and-complications-of-pulmonary-artery-catheter-insertion-in-adult-open-heart-surgery-patients-of-a-tertiary-care-hospital
#11
Syed Shabbir Ahmed, Mohammad Irfan Akhtar, Rehana Kamal
BACKGROUND: Patients presenting for cardiac surgery have unstable cardiovascular disease and haemodynamics with multiple coexisting diseases. Optimal monitoring in the perioperative period is very important for best perioperative outcome. The introduction of the flow-directed pulmonary artery catheter (PAC) into clinical practice is one of the most important and popular advances in the field of cardiac anaesthesia. The objective of the study was to determine the frequency, indications and complications of pulmonary artery catheter insertion in adult open-heart surgery patients...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28576285/intraoperative-ketamine-for-prevention-of-postoperative-delirium-or-pain-after-major-surgery-in-older-adults-an-international-multicentre-double-blind-randomised-clinical-trial
#12
Michael S Avidan, Hannah R Maybrier, Arbi Ben Abdallah, Eric Jacobsohn, Phillip E Vlisides, Kane O Pryor, Robert A Veselis, Hilary P Grocott, Daniel A Emmert, Emma M Rogers, Robert J Downey, Heidi Yulico, Gyu-Jeong Noh, Yonghun H Lee, Christine M Waszynski, Virendra K Arya, Paul S Pagel, Judith A Hudetz, Maxwell R Muench, Bradley A Fritz, Witold Waberski, Sharon K Inouye, George A Mashour
BACKGROUND: Delirium is a common and serious postoperative complication. Subanaesthetic ketamine is often administered intraoperatively for postoperative analgesia, and some evidence suggests that ketamine prevents delirium. The primary purpose of this trial was to assess the effectiveness of ketamine for prevention of postoperative delirium in older adults. METHODS: The Prevention of Delirium and Complications Associated with Surgical Treatments [PODCAST] study is a multicentre, international randomised trial that enrolled adults older than 60 years undergoing major cardiac and non-cardiac surgery under general anaesthesia...
July 15, 2017: Lancet
https://www.readbyqxmd.com/read/28552594/plasma-concentration-and-cardiovascular-effects-of-intramuscular-medetomidine-combined-with-three-doses-of-the-peripheral-alpha2-antagonist-mk-467-in-dogs
#13
Flavia Restitutti, M Johanna Kaartinen, Marja R Raekallio, Otto Wejberg, Emmi Mikkola, Jerome R E Del Castillo, Mika Scheinin, Outi M Vainio
OBJECTIVE: We investigated the plasma concentrations and cardiovascular effects of intramuscularly (IM) administered medetomidine, administered alone or with three different doses of MK-467. STUDY DESIGN: Prospective, randomized, open, crossover trial. ANIMALS: Eight purpose-bred healthy Beagle dogs. METHODS: Each dog was administered four treatments: medetomidine 20 μg kg(-1) IM alone or mixed in the same syringe with MK-467 (200 μg kg(-1), 400 μg kg(-1) or 600 μg kg(-1))...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28538805/the-effect-of-epidurally-administered-dexamethasone-with-lignocaine-for-post-operative-analgesia-in-dogs-undergoing-ovariohysterectomy-a-dose-response-study
#14
Larissa Correa Hermeto, Rafael de Rossi, Natalia de Andrade Bicudo, Klebs Tavares Assis, Lucas Latta Escobar, Pedro Santana de Camargo
Purpose: To evaluate the postoperative analgesic and adverse effects of three doses of dexamethasone, administered epidurally in combination with lignocaine, in dogs undergoing ovariohysterectomy (OVH). Methods: Twenty-four female dogs undergoing ovariohysterectomy were pre-medicated with acepromazine and general anaesthesia was induced and maintained with propofol. Animals were randomly allocated into four groups of six. The control group was given lignocaine 2% (LI) and the treatment groups were given lignocaine with either 2 mg dexamethasone (LIDEX2), 4 mg dexamethasone (LIDEX4) or 8 mg dexamethasone (LIDEX8) administered at the lumbosacral epidural space...
April 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28521255/pharmacokinetics-of-ketamine-and-norketamine-enantiomers-after-racemic-or-s-ketamine-iv-bolus-administration-in-dogs-during-sevoflurane-anaesthesia
#15
Noemi Romagnoli, Rima N Bektas, Annette P Kutter, Andrea Barbarossa, Paola Roncada, Sonja Hartnack, Regula Bettschart-Wolfensberger
The aims of this study were to measure plasma levels of R- and S-ketamine and their major metabolites R- and S-norketamine following single intravenous bolus administration of racemic or S-ketamine in sevoflurane anaesthetised dogs and to calculate the relevant pharmacokinetic profiles. Six adult healthy beagle dogs were used in the study. An intravenous bolus of 4mg/kg racemic ketamine (RS-KET) or 2mg/kg S-ketamine (S-KET) was administered, with a three-weeks washout period between treatments. Venous blood samples were collected at fixed times until 900min and R- and S-ketamine as well as R- and S-norketamine plasma levels determined by liquid chromatography coupled with tandem mass spectrometry...
May 6, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28509399/association-of-renin-angiotensin-antagonists-with-adverse-perioperative-events-in-patients-undergoing-elective-orthopaedic-surgery-a-case-control-study
#16
Amith Zainudheen, Ian A Scott, Xenia Caney
BACKGROUND: Renin angiotensin antagonists (RAAs) may block protective vasopressor responses during surgery. Evidence linking RAAs with intraoperative hypotension and perioperative adverse events is conflicting. METHODS: Retrospective case-control study of 258 consecutive patients who underwent elective total knee or hip replacement between January 1(st) 2013 and August 31(st) 2016, and who were chronically prescribed a single blood pressure lowering agent up to the time of surgery...
May 16, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28502090/successful-use-of-lipid-emulsion-to-resuscitate-a-foal-after-intravenous-lidocaine-induced-cardiovascular-collapse
#17
V Vieitez, I Á Gómez de Segura, M Martin-Cuervo, L Alfonso Gracia, L Javier Ezquerra
BACKGROUND: Lipid emulsion has been reported to be effective for the treatment of local anaesthetic overdoses in rats, dogs and humans. OBJECTIVES: To describe the successful treatment of cardiovascular lidocaine toxicity in a foal with intravenous lipid administration. STUDY DESIGN: Observational study: case report. METHODS: An 8-month-old Arabian cross foal was anaesthetised for removal of the right alar fold and nasal plate...
May 14, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28501489/hydroxyethyl-starch-130-0-4-compared-with-0-9-nacl-administered-to-greyhounds-with-haemorrhagic-shock
#18
Duana McBride, Anthea L Raisis, Giselle Hosgood, Lisa Smart
OBJECTIVE: To determine the cardiovascular and acid-base effects of 6% hydroxyethyl starch (HES) 130/0.4 and 0.9% sodium chloride (NaCl) administered to anaesthetized greyhounds with haemorrhagic shock. STUDY DESIGN: Prospective, experimental, complete randomized block design. ANIMALS: Twelve healthy adult greyhounds. METHODS: After 60 minutes of isoflurane anaesthesia, 48 mL kg(-1) of blood was removed to induce hypotension...
March 6, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28498927/efficacy-and-safety-of-carbetocin-given-as-an-intravenous-bolus-compared-with-short-infusion-for-caesarean-section-double-blind-double-dummy-randomized-controlled-non-inferiority-trial
#19
S Dell-Kuster, I Hoesli, O Lapaire, E Seeberger, L A Steiner, H C Bucher, T Girard
Background: Carbetocin is a synthetic oxytocin-analogue, which should be administered as bolus according to manufacturer's recommendations. A higher speed of oxytocin administration leads to increased cardiovascular side-effects. It is unclear whether carbetocin administration as short infusion has the same efficacy on uterine tone compared with bolus administration and whether haemodynamic parameters differ. Methods: In this randomized, double-blind, non-inferiority trial, women undergoing planned or unplanned Caesarean section (CS) under regional anaesthesia received a bolus and a short infusion, only one of which contained carbetocin 100 mcg (double dummy)...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28498903/efficacy-and-safety-of-inhaled-anaesthetic-for-postoperative-sedation-during-mechanical-ventilation-in-adult-cardiac-surgery-patients-a-systematic-review-and-meta-analysis
#20
J Spence, E Belley-Côté, H K Ma, S Donald, J Centofanti, S Hussain, S Gupta, P J Devereaux, R Whitlock
The aim was to evaluate the efficacy and safety of volatile anaesthetic for postoperative sedation in adult cardiac surgery patients through a systematic review and meta-analysis. We retrieved randomized controlled trials from MEDLINE, EMBASE, CENTRAL, Web of Science, clinical trials registries, conference proceedings, and reference lists of included articles. Independent reviewers extracted data, including patient characteristics, type of intraoperative anaesthesia, inhaled anaesthetic used, comparator sedation, and outcomes of interest, using pre-piloted forms...
May 1, 2017: British Journal of Anaesthesia
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