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hypothermia, anesthesia

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https://www.readbyqxmd.com/read/29445064/the-validity-of-anesthetic-protocols-for-the-surgical-procedure-of-castration-in-rats
#1
Atsushi Tsukamoto, Natsuko Niino, Mizuho Sakamoto, Risa Ohtani, Tomo Inomata
To achieve surgical anesthesia in animal experimentation, it is necessary to select the appropriate anesthetic protocol by considering its pharmacological properties and the surgical procedure to be performed. However, few studies have investigated the validity of anesthetic protocols under surgical conditions in small rodents. The present study aimed to clarify the pharmacological properties of 4 anesthetic protocols during the surgical procedure of castration in rats. Eight-week-old male Wistar rats were anesthetized with anesthetics, including the combination of ketamine and xylazine (K/X), the combination of medetomidine, midazolam, and butorphanol (M/M/B), and isoflurane, and sevoflurane...
February 14, 2018: Experimental Animals
https://www.readbyqxmd.com/read/29362044/intrathecal-morphine-related-perioperative-hypothermia-in-women-undergoing-cesarean-delivery-a-retrospective-case-control-study
#2
Judy Munday, Sonya Osborne, Patsy Yates
PURPOSE: Rates of inadvertent perioperative hypothermia among women undergoing spinal anesthesia for cesarean delivery are reported to be high. Intrathecal morphine has been noted to have a potentially potent effect on thermoregulation. This retrospective case-control study sought to investigate the incidence of perioperative hypothermia in women undergoing cesarean delivery with and without intrathecal morphine and to describe any clinical factors associated with the condition, the identification of which would provide direction for nursing priorities in the care of the condition...
February 2018: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/29341023/anesthesia-and-monitoring-of-animals-during-mri-studies
#3
Jordi L Tremoleda, Sven Macholl, Jane K Sosabowski
The use of imaging represents a major impact on the refinement and the reduction of in vivo studies in animal models, in particular for allowing longitudinal monitoring of the onset and the progression of disease within the same animal, and studying the biological effects of drug candidate and their therapeutic effectiveness. But the use of imaging procedures can affect animal physiology, and the need to anesthetize the animals for imaging entails potential health risks. During anesthesia, there is an inevitable autonomic nervous system depression which induces cardiovascular depression, respiratory depression, and hypothermia...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29225745/heated-wire-humidification-circuit-attenuates-the-decrease-of-core-temperature-during-general-anesthesia-in-patients-undergoing-arthroscopic-hip-surgery
#4
Sooyong Park, Seok-Hwa Yoon, Ann Misun Youn, Seung Hyun Song, Ja Gyung Hwang
Background: Intraoperative hypothermia is common in patients undergoing general anesthesia during arthroscopic hip surgery. In the present study, we assessed the effect of heating and humidifying the airway with a heated wire humidification circuit (HHC) to attenuate the decrease of core temperature and prevent hypothermia in patients undergoing arthroscopic hip surgery under general anesthesia. Methods: Fifty-six patients scheduled for arthroscopic hip surgery were randomly assigned to either a control group using a breathing circuit connected with a heat and moisture exchanger (HME) (n = 28) or an HHC group using a heated wire humidification circuit (n = 28)...
December 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29204888/initial-robotic-assistance-in-the-surgical-management-of-renal-cell-carcinoma-with-level-4-cavoatrial-thrombus
#5
Isaac Palma-Zamora, Deepansh Dalela, Ravi Barod, Linda Hsu, Mani Menon, Craig G Rogers
We report a case of left-sided renal cell carcinoma (RCC) with level 4 cavoatrial tumor thrombus where robotic assistance was used to achieve hemostasis around the kidney in order to minimize coagulopathic hemorrhage from the nephrectomy bed during subsequent open completion nephrectomy and cavoatrial thrombectomy under extracorporeal circulation and hypothermic circulatory arrest. Robotic assistance allowed for meticulous dissection and ligation of parasitic and arterial vessels to the kidney, release of renal attachments, and exposure of the inferior vena cava...
December 4, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/29199541/impact-of-temperature-on-the-narcotrend-index-during-hypothermic-cardiopulmonary-bypass-in-children-with-sevoflurane-anesthesia
#6
Nils Dennhardt, Christiane Beck, Dietmar Boethig, Sebastian Heiderich, Alexander Horke, Sebastian Tiedge, Martin Boehne, Robert Sümpelmann
BACKGROUND: During cardiopulmonary bypass (CPB) in children, anesthesia maintained by sevoflurane administered via the oxygenator is increasingly common. Anesthetic uptake and requirement may be influenced by the non-physiological conditions during hypothermic CPB. Narcotrend-processed EEG monitoring may, therefore, be useful to guide the administration of sevoflurane during this phase. OBJECTIVE: The objective of this prospective, clinical, observational study was to assess the correlation between body temperature, Narcotrend Index (NI) and administered sevoflurane in children during CPB...
December 1, 2017: Perfusion
https://www.readbyqxmd.com/read/29195854/hypothermia-in-total-joint-arthroplasty-a-wake-up-call
#7
Jordan B Simpson, Vijai S Thomas, Sabir K Ismaily, Pavel I Muradov, Philip C Noble, Stephen J Incavo
BACKGROUND: Total joint patients are particularly vulnerable to perioperative hypothermia (PH) (combined effects of anesthesia, radiation, and convective heat loss from exposed skin surfaces and cool temperatures in the operating room). There are limited studies on PH in these patients. METHODS: In a retrospective review of 204 patients undergoing primary hip and 179 undergoing primary knee replacement surgeries, time and temperature parameters were collected from the electronic health records from preoperative and postoperative recovery room nursing assessments, intraoperative anesthesia records, and floor nursing notes...
November 8, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29159490/-prewarming-according-to-the-awmf-s3-guidelines-on-preventing-inadvertant-perioperative-hypothermia-2014-retrospective-analysis-of-7786-patients
#8
R Grote, A J Wetz, A Bräuer, M Menzel
BACKGROUND: Inadvertent perioperative hypothermia, which is defined as a core body temperature of less than 36.0 °C, can have serious consequences in surgery patients. These include cardiac complications, increased blood loss, wound infections and postoperative shivering; therefore, the scientific evidence that inadvertent perioperative hypothermia should be avoided is undisputed and several national guidelines have been published summarizing the scientific evidence and recommending specific procedures...
November 20, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/29109627/temperature-management-under-general-anesthesia-compulsion-or-option
#9
REVIEW
Barkha Bindu, Ashish Bindra, Girija Rath
Administration of general anesthesia requires continuous monitoring of vital parameters of the body including body temperature. However, temperature continues to be one of the least seriously monitored parameters perioperatively. Inadvertent perioperative hypothermia is a relatively common occurrence with both general and regional anesthesia and can have significant adverse impact on patients' outcome. While guidelines for perioperative temperature management have been proposed, there are no specific guidelines regarding the best site or best modality of temperature monitoring and management intraoperatively...
July 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29066717/establishment-and-validation-of-a-prediction-equation-to-estimate-risk-of-intraoperative-hypothermia-in-patients-receiving-general-anesthesia
#10
Jie Yi, Lujing Zhan, Yongjing Lei, Shiyuan Xu, Yongyu Si, Shiyang Li, Zhongyuan Xia, Yisa Shi, Xiaoping Gu, Jianshe Yu, Guohai Xu, Erwei Gu, Yonghao Yu, Yanqing Chen, Hequn Jia, Yinglin Wang, Xiuli Wang, Xiaoqing Chai, Xiaoju Jin, Junping Chen, Meiying Xu, Junyu Xiong, Guonian Wang, Kaizhi Lu, Wenli Yu, Weifu Lei, Zaisheng Qin, Jingguo Xiang, Longyun Li, Min Yao, Yuguang Huang
Inadvertent intraoperative hypothermia (core temperature <36 °C) is a frequent but preventable complication of general anesthesia. Accurate risk assessment of individual patients may help physicians identify patients at risk for hypothermia and apply preventive approaches, which include active intraoperative warming. This study aimed to develop and validate a risk-prediction model for intraoperative hypothermia. Two independent observational studies in China, the Beijing Regional Survey and the China National Survey, were conducted in 2013 and 2014, respectively, to determine the incidence of hypothermia and its underlying risk factors...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29017742/preoperative-anterior-thigh-temperature-does-not-correlate-with-perioperative-temporal-hypothermia-during-cesarean-delivery-with-spinal-anesthesia-secondary-analysis-of-a-randomized-control-trial
#11
B Cobb, G Abir, B Carvalho
BACKGROUND: Core-to-peripheral redistribution of heat, secondary to sympathetic-mediated vasodilation, is the major mechanism leading to early perioperative hypothermia after neuraxial anesthesia. The study aim was to determine if preoperative anterior thigh (peripheral lower extremity) temperature predicted perioperative temporal (core) temperature decrease during cesarean delivery with spinal anesthesia. METHODS: Secondary analysis of data derived from a prospective, randomized study of 46 healthy women undergoing scheduled cesarean delivery with spinal anesthesia was performed...
August 24, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28982970/cold-block-of-in-vitro-eyeblink-reflexes-evidence-supporting-the-use-of-hypothermia-as-an-anesthetic-in-pond-turtles
#12
Joyce Keifer, Zhaoqing Zheng
Use of hypothermia as a means of anesthesia for amphibians and reptiles is prohibited by agencies that establish veterinary guidelines. This has recently been called into question by members of the scientific community based on reviews of published literature. Using pond turtles (Trachemys scripta elegans), hypothermia as a method for anesthesia to precede euthanasia by decapitation was assessed. Turtles were subjected to hypothermia using a cooling followed by freezing protocol. Body temperature measurements ranged between -1 to -2°C while core body temperature was -1°C...
October 5, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28938977/efficacy-of-prewarming-with-a-self-warming-blanket-for-the-prevention-of-unintended-perioperative-hypothermia-in-patients-undergoing-hip-or-knee-arthroplasty
#13
Charlotte Rosenkilde, Marianne Vamosi, Jørgen T Lauridsen, Dorthe Hasfeldt
PURPOSE: Unintended perioperative hypothermia (UPH) is a common and serious complication for patients undergoing anesthesia. The purpose of this study was to identify the incidence of UPH and evaluate the efficacy of a self-warming blanket on the drop in core temperature and risk of UPH in patients undergoing hip or knee arthroplasty. DESIGN: A case-control study was used. METHODS: Sixty patients were included. Thirty patients received prewarming with a self-warming blanket and forced-air warming intraoperatively; thirty patients received only forced-air warming intraoperatively...
October 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28938523/hypothermia-induced-by-anesthesia-regulates-various-signals-expressions-in-the-hippocampus-of-animals
#14
Huimei Hao, Shanshan Wang
Though important for a variety of medical procedures, general anesthesia is not a problem free. Some anesthetics have been suggested to affect a number of signals, which are associated with memory consolidation and cognition. In the present study, we attempted to investigate the molecular mechanism of anesthesia-regulated processes. We found that under hypothermic condition, anesthetic of isoflurane enhances various signals expression in hippocampus, including Hspd1, Actb, Mgst1, THBS4, Syp, C1QC, Serpine, Plat, and Ngf, which were related to cellular stress, neural plasticity responses, and hippocampal injury...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28922233/endoscopic-versus-open-repair-for-craniosynostosis-in-infants-using-propensity-score-matching-to-compare-outcomes-a-multicenter-study-from-the-pediatric-craniofacial-collaborative-group
#15
Douglas R Thompson, David Zurakowski, Charles M Haberkern, Paul A Stricker, Petra M Meier
BACKGROUND: The North American Pediatric Craniofacial Collaborative Group (PCCG) established the Pediatric Craniofacial Surgery Perioperative Registry to evaluate outcomes in infants and children undergoing craniosynostosis repair. The goal of this multicenter study was to utilize this registry to assess differences in blood utilization, intensive care unit (ICU) utilization, duration of hospitalization, and perioperative complications between endoscopic-assisted (ESC) and open repair in infants with craniosynostosis...
September 14, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28903829/quantification-of-induced-hypothermia-from-aseptic-scrub-applications-during-rodent-surgery-preparation
#16
Anna M Skorupski, Jingyi Zhang, Danielle Ferguson, Frank Lawrence, F Claire Hankenson
Laboratory mice (Mus musculus) are prone to develop hypothermia during anesthesia for surgery, thus potentially impeding anesthetic recovery, wound healing, and future health. The core body temperatures of isoflurane-anesthetized mice are influenced by the choice of supplemental heat sources; however, the contribution of various surgical scrubs on the body temperatures of mice under gas anesthesia has not been assessed. We sought to quantify the effect of using alcohol (70% isopropyl alcohol [IPA]) compared with saline to rinse away surgical scrub on the progression of hypothermia in anesthetized mice (n = 47)...
September 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28895060/cerebral-tissue-oxidative-ischemia-reperfusion-injury-in-connection-with-experimental-cardiac-arrest-and-cardiopulmonary-resuscitation-effect-of-mild-hypothermia-and-methylene-blue
#17
Lars Wiklund, Ranjana Patnaik, Aruna Sharma, Adriana Miclescu, Hari S Sharma
The present investigation is an expansion of previous studies which all share a basic experimental protocol of a porcine-induced cardiac arrest (CA) of 12 min followed by 8 min of cardiopulmonary resuscitation (CPR), different experimental treatments (immediate as well as postponed induced mild hypothermia and administration of much or less cool intravenous fluids), and a follow-up period of 3 h after which the animals were sacrificed. Another group of animals was studied according to the same protocol after 12-min CA and "standard CPR...
September 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28887255/forced-air-warming-in-patients-undergoing-endovascular-procedures-comparison-between-two-thermal-blanket-models
#18
Frederico L J Monteiro, Helio Halpern, Fernando Bortoli, Lucia Kataoka, Cristina Marumo, Mariângela Ribeiro, Matheus Castellassi, Cynthia Mendes, Nelson Wolosker
STUDY OBJECTIVE: The purpose of this study was to compare the efficiency between two thermal blanket models: the upper blanket and the underbody blanket in patient heating and hypothermia prevention during endovascular surgery. DESIGN: Prospective randomized study SETTING: Operating room PATIENTS: 50 patients, ASA 2-4 physical status, receiving endovascular surgery repair of infrarenal abdominal aortic aneurysm or lower limb angioplasty by endovascular technique were studied...
September 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28836154/randomized-controlled-trial-of-moderate-hypothermia-versus-deep-hypothermia-anesthesia-on-brain-injury-during-stanford-a-aortic-dissection-surgery
#19
Xufang Sun, Hua Yang, Xinyu Li, Yue Wang, Chuncheng Zhang, Zhimin Song, Zhenxiang Pan
This study aimed to compare the effects of moderate versus deep hypothermia anesthesia for Stanford A aortic dissection surgery on brain injury. A total of 82 patients who would undergo Stanford A aortic dissection surgery were randomized into two groups: moderate hypothermia group (MH, n = 40, nasopharyngeal temperature 25 °C, and rectal temperature 28 °C) and deep hypothermia group (DH, n = 42, nasopharyngeal temperature 20 °C, and rectal temperature 25 °C). Different vascular replacement techniques including aortic root replacement, Bentall, and Wheat were used...
August 23, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28814371/dental-management-considerations-in-a-pediatric-patient-with-moyamoya-disease
#20
Htet Bo, David Avenetti, Evelina Kratunova
Moyamoya disease is a rare progressive cerebral arteriopathy associated with risk of ischemic and hemorrhagic brain complications. The dental care of affected individuals should be performed in a pain- and stress-free manner to decrease the chance of occurrence of episodes of hypocapnia, hypercapnia, hypotension, hypovolemia, and hypothermia. Dental treatment may be provided in an outpatient dental setting or in a hospital setting, but both venues require interdisciplinary collaboration to ensure safe delivery of patient care...
May 15, 2017: Journal of Dentistry for Children
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