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Physiology and anesthesia

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https://www.readbyqxmd.com/read/28810347/-history-of-world-neurosurgery
#1
X Wang
In 5000 BC, South American tribes digged the bones in the living head to seek ways to communicate with the gods, which was primitive trephination and may be the first neurosurgical behavior. In 2600 BC, Imhotep in ancient Egypt took the brain out of the head from the nose, for a better preserve of the mummy, which was a prototype of modern transsphenoidal surgery. And the development of anatomy in ancient Greek laid a solid foundation for neurosurgery. From 500 to 1500 AD, the rise of religion and the occurrence of war, prompted a large number of craniocerebral trauma, which contributed greatly to the early development of neurosurgery as a distinct specialty...
May 28, 2017: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28808585/spinal-cord-injury-during-the-second-trimester-of-pregnancy
#2
Ahmad Zaheer Qureshi, Sami Ullah, Anas Jehad AlSaleh, Rubina' Ullah
INTRODUCTION: Pregnancies in women with spinal cord injury (SCI) are at greater risk of morbidity and mortality. Although pregnancy after SCI is well elaborated in the literature, SCI occurring during pregnancy is rarely reported. Abrupt changes in the body physiology because of SCI and the resulting disability add a risk to maternal and fetal well-being. Not only is the burden of care increased but there is also a higher risk of developing pressure ulcers, urinary tract infections, autonomic instability, intrauterine growth retardation and venous thromboembolism...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28781205/psoas-compartment-and-sacral-plexus-block-via-electrostimulation-for-pelvic-limb-amputation-in-dogs
#3
Jonathon M Congdon, Pedro Boscan, Clara S S Goh, Marlis Rezende
OBJECTIVE: To assess the efficacy of psoas compartment and sacral plexus block for pelvic limb amputation in dogs. STUDY DESIGN: Prospective clinical study. ANIMALS: A total of 16 dogs aged 8±3 years and weighing 35±14 kg (mean±standard deviation). METHODS: Dogs were administered morphine (0.5 mg kg(-1)) and atropine (0.02 mg kg(-1)); anesthesia was induced with propofol and maintained with isoflurane. Regional blocks were performed before surgery in eight dogs with bupivacaine (2...
March 22, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28781041/advancements-in-evidence-based-anesthesia-of-exotic-animals
#4
REVIEW
Julie A Balko, Sathya K Chinnadurai
Anesthesia and sedation of pet nondomestic species are often necessary for both invasive and noninvasive procedures. Even minimally invasive procedures can be stressful for small prey species that are not domesticated or acclimated to human contact and restraint. Recent advancements in evidence-based practice will continue to improve the field based on scientifically sound best practices and rely less on anecdotal recommendations. This article focuses on new scientific literature that has been published in the past 5 years...
September 2017: Veterinary Clinics of North America. Exotic Animal Practice
https://www.readbyqxmd.com/read/28776233/after-hour-versus-daytime-shifts-in-non-operating-room-anesthesia-environments-national-distribution-of-case-volume-patient-characteristics-and-procedures
#5
Rodney A Gabriel, Brittany N Burton, Mitchell H Tsai, Jesse M Ehrenfeld, Richard P Dutton, Richard D Urman
The objective of this study was to characterize workload during all hours of the day in the non-operating room anesthesia (NORA) environment and identify what type of patients and procedures were more likely to occur during after-hours. By investigating data from the National Anesthesia Clinical Outcomes Registry, we characterized the total number of ongoing NORA cases per hour of the day (0 - 23 h). Results were presented as the mean hour and standard error (SE). Multivariable logistic regression was applied to assess the association of various patient, procedural, and facility characteristics with time of day (after-hours = 17:01-06:59 local time versus day-time)...
September 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28769814/the-digestive-tract-of-cephalopods-a-neglected-topic-of-relevance-to-animal-welfare-in-the-laboratory-and-aquaculture
#6
REVIEW
António V Sykes, Eduardo Almansa, Gavan M Cooke, Giovanna Ponte, Paul L R Andrews
Maintenance of health and welfare of a cephalopod is essential whether it is in a research, aquaculture or public display. The inclusion of cephalopods in the European Union legislation (Directive 2010/63/EU) regulating the use of animals for scientific purposes has prompted detailed consideration and review of all aspects of the care and welfare of cephalopods in the laboratory but the information generated will be of utility in other settings. We overview a wide range of topics of relevance to cephalopod digestive tract physiology and their relationship to the health and welfare of these animals...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28765033/assessment-of-butorphanol-azaperone-medetomidine-combination-as-anesthesia-for-semen-collection-and-evaluation-of-semen-quality-in-white-tailed-deer-odocoileus-virginianus
#7
S M Kirschner, R Rodenkirch
The aim of this current study was to evaluate the level of anesthesia produced by a combination of butorphanol-azaperone-medetomidine (BAM) for semen collection by electroejaculation on captive white-tailed bucks (Odocoileus virginianus). Ten male white-tailed deer, weighing 68.2-115.9kg, ranging in age from one to four years were randomly selected from housing pens and anesthetized with the BAM drug combination at a dose volume of 2.0mL each. Semen was collected from each animal using a standard cervid electroejaculation protocol while under BAM anesthesia...
July 25, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28764714/testis-specific-histone-2b-is-associated-with-sperm-chromatin-dynamics-and-bull-fertility-a-pilot-study
#8
Naseer A Kutchy, Ana Velho, Erika S B Menezes, Marie Jacobsen, Giselle Thibaudeau, Robert W Wills, Arlindo Moura, Abdullah Kaya, Andy Perkins, Erdogan Memili
BACKGROUND: Bull fertility is the degree of sperm's ability to fertilize and activate the egg and support embryo development, and this is critical for herd reproductive performance. We used the bull as a unique model organism for the study of male fertility because cattle genetics and physiology is similar to those of other mammals including humans. Moreover, reliable fertility data along with well-established in vitro systems are available for bovine. The objective of this original study was to ascertain evolutionary diversification and expression dynamics of Testis Specific Histone 2B (TH2B) in sperm from Holstein bulls with different fertility scores...
August 1, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28759487/aortocaval-compression-syndrome-time-to-revisit-certain-dogmas
#9
Allison J Lee, Ruth Landau
More than 70 years ago, the phenomenon of "postural shock" in the supine position was described in healthy women in late pregnancy. Since then, avoidance of the supine position has become a key component of clinical practice. Indeed, performing pelvic tilt in mothers at term to avoid aortocaval compression is a universally adopted measure, particularly during cesarean delivery. The studies on which this practice is based are largely nonrandomized, utilized a mix of anesthetic techniques, and were conducted decades ago in the setting of avoidance of vasopressors...
July 27, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28749308/evaluation-of-the-effects-of-sternal-versus-lateral-recumbency-on-trends-of-selected-physiologic-parameters-during-isoflurane-anesthesia-in-zoo-housed-black-tailed-prairie-dogs-cynomys-ludovicianus
#10
David Eshar, Diane Mason, Nili Avni-Magen, Elizabeth Kaufman, Avital Paz, Hugues Beaufrère
Isoflurane gas anesthesia is often used for immobilization of prairie dogs in field studies, laboratory research, and veterinary clinical purposes. The goals of this prospective study were to evaluate the effects of sternal versus right lateral recumbency on trends of selected physiologic parameters during isoflurane anesthesia in black-tailed prairie dogs ( Cynomys ludovicianus ). Fourteen adult, zoo-housed black-tailed prairie dogs were tested during the study. Animals were anesthetized using isoflurane and randomly placed in either sternal or right lateral recumbency to evaluate changes in trends of physiologic parameters, measured selectively every 30 min throughout a 60-min anesthesia period...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28733237/a-critical-test-of-drosophila-anaesthetics-isoflurane-and-sevoflurane-are-benign-alternatives-to-cold-and-co2
#11
Heath A MacMillan, Mikkel Nørgård, Heidi J MacLean, Johannes Overgaard, Catherine J A Williams
Anaesthesia is often a necessary step when studying insects like the model organism Drosophila melanogaster. Most studies of Drosophila and other insects that require anaesthesia use either cold exposure or carbon dioxide exposure to induce a narcotic state. These anaesthetic methods are known to disrupt physiology and behavior with increasing exposure, and thus ample recovery time is required prior to experimentation. Here, we examine whether two halogenated ethers commonly used in vertebrate anaesthesia, isoflurane and sevoflurane, may serve as alternative means of insect anaesthesia...
July 18, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28725247/novel-anesthetic-technique-for-combined-intracavitary-and-interstitial-brachytherapy-for-cervix-cancer-in-an-outpatient-setting
#12
Yiat Horng Leong, Kenneth Hock Soon Tan, Bok Ai Choo, Vicky Yaling Koh, Johann I-Hsiung Tang
PURPOSE: To determine the feasibility and safety of outpatient combined intracavitary and interstitial brachytherapy for cervix cancer with sedation and local anesthesia. MATERIAL AND METHODS: We included patients diagnosed with non-metastatic cervix cancer and have completed brachytherapy between December 2015 and December 2016. Moderate to deep sedation was achieved using intravenous midazolam, propofol, fentanyl, and oxycodone. Local anesthesia was achieved with 2% lignocaine gel and a paracervical block containing a mixture of 1% ropivacaine, 2% lignocaine, and 1 : 1,000 adrenaline...
June 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28724486/behavioral-characteristics-of-adult-zebrafish-danio-rerio-after-ms222-anesthesia-for-fin-excision
#13
Mélissa Cm De Lombaert, Elizabeth L Rick, Lisa A Krugner-Higby, Marc A Wolman
The health of laboratory animals is an ethical responsibility of researchers and a critical determinant of experimental outcome. Therefore, all husbandry procedures should be evaluated for their effects on mortality, behavior, and physiology to maximize animal welfare and minimize experimental variability. For adult zebrafish, the excision of a small portion of the caudal fin (that is, 'fin clipping') under MS222 anesthesia is a common procedure to obtain tissue for genotyping. The potential effect of this procedure on behavioral and physiologic assays of feeding, anxiety, and stress has not previously been assessed...
July 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28713258/relationship-of-topology-multiscale-phase-synchronization-and-state-transitions-in-human-brain-networks
#14
Minkyung Kim, Seunghwan Kim, George A Mashour, UnCheol Lee
How the brain reconstitutes consciousness and cognition after a major perturbation like general anesthesia is an important question with significant neuroscientific and clinical implications. Recent empirical studies in animals and humans suggest that the recovery of consciousness after anesthesia is not random but ordered. Emergence patterns have been classified as progressive and abrupt transitions from anesthesia to consciousness, with associated differences in duration and electroencephalogram (EEG) properties...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28698070/surgical-preparation-of-rats-and-mice-for-intravital-microscopic-imaging-of-abdominal-organs
#15
George J Rhodes
Intravital microscopy is a powerful research tool that can provide insight into cellular and subcellular events that take place in organs in the body. However, meaningful results can only be obtained from animals whose physiology is preserved during the process of microscopy. Here I discuss the importance of preserving the overall state of health of the animal, methods of anesthesia, surgical techniques for intravital microscopy of various abdominal organs, methods to maintain and monitor the physiology of the animal during microscopy and associated peri- and post-operative recovery considerations...
July 8, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28688993/fat-demented-and-stupid-an-unrecognized-legacy-of-pediatric-urology
#16
REVIEW
Christopher S Cooper
The human body is an unfathomably intricate structure consisting of many connected and intertwined systems. This makes it impossible for therapeutic interventions to selectively target only one physiologic system without some impact or side effects on all the other systems. The resiliency of the human body modifies and disguises side effects, some of which may be undetectable for years and not apparent without scientific investigation. Pediatric urologists employ relatively few medications for the common conditions they treat and in general these consist of antibiotics, anticholinergics, and anesthetics...
June 17, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28663642/capnographic-analysis-of-minimum-mandatory-flow-rate-for-hudson-face-mask-a-randomized-double-blind-study
#17
Pranjali Kurhekar, T Krishna Prasad, Buddhan Rajarathinam, M S Raghuraman
BACKGROUND: Oxygen supplementation through Hudson type face mask is frequently used in perioperative settings. Hudson mask is a variable rate performance device with the risk of rebreathing. Studies using capnography to find out an actual fraction of rebreathing in spontaneously breathing patients are not available. AIMS: In this study, we analyzed the effects of different flow rates through Hudson mask with capnography on fractional inspired carbon dioxide (FiCO2)...
April 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28661101/-sex-differences-in-physiological-responses-to-pain-throughout-surgical-procedures
#18
Ariel Ronen, Tzippy Shochat, Leonid Eidelman
BACKGROUND: Recent research has shown that women and men respond differently to pain, and that biological mechanisms partially moderate sex-related differences in pain sensitivity. Previous pain studies regarding the relationship between pain and physiological aspects, such as brain function and hormone levels, have demonstrated gender differences. In this study we examined whether male and female autonomic reactivity patterns to pain, defined as increases in heart rate and blood pressure, differ throughout anesthetized abdominal surgical procedures...
June 2017: Harefuah
https://www.readbyqxmd.com/read/28654034/use-of-a-piglet-model-for-the-study-of-anesthetic-induced-developmental-neurotoxicity-aidn-a-translational-neuroscience-approach
#19
Emmett E Whitaker, Christopher Z Zheng, Bruno Bissonnette, Andrew D Miller, Tanner L Koppert, Joseph D Tobias, Christopher R Pierson, Fedias L Christofi
Anesthesia cannot be avoided in many cases when surgery is required, particularly in children. Recent investigations in animals have raised concerns that anesthesia exposure may lead to neuronal apoptosis, known as anesthesia-induced developmental neurotoxicity (AIDN). Furthermore, some clinical studies in children have suggested that anesthesia exposure may lead to neurodevelopmental deficits later in life. Nonetheless, an ideal animal model for preclinical study has yet to be developed. The neonatal piglet represents a valuable model for preclinical study, as they share a striking number of developmental similarities with humans...
June 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28648752/physiological-and-self-assessed-psychological-stress-induced-by-a-high-fidelity-simulation-course-among-third-year-anaesthesia-and-critical-care-residents-an-observational-study
#20
Pr Thomas Geeraerts
INTRODUCTION: The use of high-fidelity simulators in Medicine can improve knowledge, behavior and practice but may be associated with significant stress. Our objective was to measure physiological and psychological self-assessed intensity of stress before and after a planned simulation training session among third year anesthesia and critical care residents. METHODS: A convenience sample of 27 residents participating in a simulation training course was studied. Stress was evaluated by self-assessment using a numerical scale and by salivary amylase concentration before and after the session...
June 22, 2017: Anaesthesia, Critical Care & Pain Medicine
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