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Physiology and anesthesia

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https://www.readbyqxmd.com/read/29215365/physiologic-evaluation-of-ventilation-perfusion-mismatch-and-respiratory-mechanics-at-different-positive-end-expiratory-pressure-in-patients-undergoing-protective-one-lung-ventilation
#1
Savino Spadaro, Salvatore Grasso, Dan Stieper Karbing, Alberto Fogagnolo, Marco Contoli, Giacomo Bollini, Riccardo Ragazzi, Gilda Cinnella, Marco Verri, Narciso Giorgio Cavallesco, Stephen Edward Rees, Carlo Alberto Volta
BACKGROUND: Arterial oxygenation is often impaired during one-lung ventilation, due to both pulmonary shunt and atelectasis. The use of low tidal volume (VT) (5 ml/kg predicted body weight) in the context of a lung-protective approach exacerbates atelectasis. This study sought to determine the combined physiologic effects of positive end-expiratory pressure and low VT during one-lung ventilation. METHODS: Data from 41 patients studied during general anesthesia for thoracic surgery were collected and analyzed...
December 6, 2017: Anesthesiology
https://www.readbyqxmd.com/read/29211350/the-angiotensin-ii-receptors-type-1-blockage-affects-the-urinary-bladder-activity-in-hyperosmolar-induced-detrusor-overactivity-in-rats-preliminary-results
#2
Kajetan Juszczak, Piotr Maciukiewicz
BACKGROUND: Angiotensin II receptors play a role in the pathogenesis of urinary bladder dysfunction, especially in the case of bladder outlet obstruction. The function of these receptors in the detrusor overactivity (DO) still remains unclear. OBJECTIVES: The study aims to investigate some of the mechanisms through which hyperosmolarity induces urinary bladder overactivity. The effect of angiotensin II receptor type 1 - AT1 (telmisartan) on urinary bladder function in physiological state and in hyperosmolar-induced DO in rat model was explored...
October 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29210892/physiologically-triggered-digital-cognitive-aid-facilitates-crisis-management-in-a-simulated-operating-room-a-randomized-controlled-study
#3
Jonathan Lipps, Lori Meyers, Scott Winfield, Michael Durda, Vedat Yildiz, Michael Kushelev
INTRODUCTION: Although the benefits of using cognitive aids in anesthesia care have previously been demonstrated, several challenges remain. It must be presented in a timely manner, and providers must be amenable to using the tool once it is available. We hypothesized that anesthesia residents would perform superiorly when presented with a digital cognitive aid (DCogA) that is automatically triggered by a set vital sign aberration. METHODS: Thirty anesthesia residents were randomized to either control (with access to hard copy of the cognitive aid) or receive a DCogA projected on their anesthesia information management system with the onset of heart block and associated hypotension...
November 28, 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29206695/drug-induced-sleep-endoscopy-from-obscure-technique-to-diagnostic-tool-for-assessment-of-obstructive-sleep-apnea-for-surgical-interventions
#4
Joshua H Atkins, Jeff E Mandel
PURPOSE OF REVIEW: Provide a practical update on drug-induced sleep endoscopy (DISE) for anesthesia providers, which can also serve as a reference for those preparing to establish a DISE program. RECENT FINDINGS: New developments in surgical approaches to OSA and the growing global incidence of the condition have stimulated increased interest and demand for drug-induced sleep endoscopy. New techniques include transoral robotic surgery and hypoglossal nerve stimulation...
December 4, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29199541/impact-of-temperature-on-the-narcotrend-index-during-hypothermic-cardiopulmonary-bypass-in-children-with-sevoflurane-anesthesia
#5
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/29183519/abdominal-trauma-revisited
#6
REVIEW
David V Feliciano
Although abdominal trauma has been described since antiquity, formal laparotomies for trauma were not performed until the 1800s. Even with the introduction of general anesthesia in the United States during the years 1842 to 1846, laparotomies for abdominal trauma were not performed during the Civil War. The first laparotomy for an abdominal gunshot wound in the United States was finally performed in New York City in 1884. An aggressive operative approach to all forms of abdominal trauma till the establishment of formal trauma centers (where data were analyzed) resulted in extraordinarily high rates of nontherapeutic laparotomies from the 1880s to the 1960s...
November 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/29176377/pulmonary-effects-of-aging
#7
Daniel Tran, Kapil Rajwani, David A Berlin
PURPOSE OF REVIEW: As the population ages, the increase in chronic illnesses among patients with decreasing lung function will pose a major public health challenge. Determining which elderly patients are fit for surgery is an increasingly important skill. Anesthetic care of elderly patients requires an understanding of the effects that chronic diseases have on normal age-related changes in physiology and function. Postoperative respiratory complications are significantly increased in patients over 65 years of age, especially those with preexisting diseases...
November 15, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29160002/a-randomized-double-blind-trial-of-needle-free-injected-lidocaine-versus-topical-anesthesia-for-infant-lumbar-puncture
#8
Ryan Caltagirone, Vidya R Raghavan, Kathleen Adelgais, Genie E Roosevelt
OBJECTIVES: Lumbar punctures (LPs) are commonly performed in febrile infants to evaluate for meningitis, and local anesthesia increases the likelihood of LP success. Traditional methods of local anesthesia require injection which may be painful or topical application which is not effective immediately. Recent advances in needle-free jet injection may offer a rapid alternative to these modalities. We compared a needle-free jet-injection system (J-Tip(™) ) with 1% buffered lidocaine to topical anesthetic (TA) cream for local anesthesia in infant LPs...
November 20, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29156481/-why-and-how-should-i-assess-frailty-a-guide-for-the-preoperative-anesthesia-clinic
#9
Oliver Birkelbach, Rudolf Mörgeli, Felix Balzer, Maria Olbert, Sascha Treskatsch, Rainer Kiefmann, Ursula Müller-Werdan, Anett Reisshauer, Christine Schwedtke, Bruno Neuner, Claudia Spies
Introduction: Frailty is a condition of decreased physiological reserves seen in approx. one third of elderly anesthesiological patients, and affecting many aspects of treatment as well as outcome. Although there are over 60 measurement instruments, frailty assessment is still poorly implemented. Understanding why and how to assess frailty is key to its implementation in preoperative anesthesia clinics. Method: After presenting the impact of perioperative frailty and the benefits of an early diagnosis on health related quality of life, we present an overview of the most important tools that can be used in the preoperative frailty assessment...
November 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/29155786/isolation-and-cultivation-of-adult-rat-cardiomyocytes
#10
Franziska Nippert, Rolf Schreckenberg, Klaus-Dieter Schlüter
In an intact heart, adjacent cells influence adult cardiomyocytes. With the method of isolation and cultivation of adult cardiomyocytes, a precise investigation of the behavior of these cells under specific treatments and environments is possible. This manuscript presents a protocol for successful isolation and cultivation of adult rat ventricular cardiomyocytes (ARVC). The rat is sacrificed by cervical dislocation under deep anesthesia. Then, the heart is extracted and the aorta is uncovered. Subsequently, perfusion on the Langendorff perfusion system with calcium depletion and collagenase treatment is performed...
October 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29149477/pathfinders-in-oncology-from-the-beginning-of-the-19th-century-to-the-inauguration-of-the-first-cancer-hospital-in-the-united-states
#11
Steven I Hajdu
The fields of medicine and oncology made substantial progress between 1800 and 1885. The first half of this period was dominated by the spectacular progress in physiology, cytology, histology, histopathology, and diagnostic microscopy. In the second half of the period, advancements in surgical techniques, anesthesia, asepsis, and laboratory medicine, including bacteriology, chemistry, and biochemistry, led to the development of medical specialties, including surgical pathology and surgical oncology. Although wars, revolutions, and socioeconomic upheavals interrupted the daily life of the populace, distinguished artists, scientists, and physicians continued, against all odds, to advance their field of interest...
November 17, 2017: Cancer
https://www.readbyqxmd.com/read/29146268/surgical-apgar-score-predicts-30-day-morbidity-in-elderly-patients-who-undergo-non-laparoscopic-gynecologic-surgery-a-retrospective-analysis
#12
Kazumi Kurata, Yoko Chino, Akiko Shinagawa, Tetsuji Kurokawa, Yoshio Yoshida
INTRODUCTION: The aim of this study was to determine whether a preoperative health status index and intraoperative data could predict perioperative morbidity and mortality in women over the age of 65 years undergoing surgery for gynecologic disorders. METHODS: The medical records of 68 female patients who were ≥65 years of age and who underwent surgery under general anesthesia in our institute from January 2014 to December 2015 were retrospectively reviewed. Preoperative data were extracted from a database and included comorbidities, American Society of Anesthesiologists physiological status classification, the Charlson Comorbidity Index, the Subjective Global Assessment 2011 revision, the subjects' risk of falling, body mass index, and age...
November 13, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/29133765/geriatric-anesthesia-related-morbidity-and-mortality-in-china-current-status-and-trend
#13
REVIEW
Yang Liu, Wei Xiao, Ling-Zhong Meng, Tian-Long Wang
OBJECTIVE: The population of elderly patients and the amount of geriatric anesthesia have been growing rapidly in China. Thus, understanding the morbidity and mortality associated with geriatric anesthesia in China is critical to the improvement of anesthesia quality and outcome. The aim of the review was to discuss the geriatric anesthesia-related morbidity and mortality in China, as well as to point out the future trend. DATA SOURCES: Articles in this review were all searched from Wanfang, China National Knowledge Infrastructure (CNKI), VIP, PubMed, and Web of Science databases, based on the reports originated in China from January 2011 to December 2016...
November 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29113646/effects-of-recombinant-canine-interferon-%C3%AE-injected-before-general-anesthesia-with-propofol-and-isoflurane-on-natural-killer-cytotoxic-activity-during-anesthesia-in-dogs
#14
Hirotaka Matsumoto, Takuma Miyata, Tomoko Ohkusa, Takahiro Teshima, Hidekazu Koyama
We aimed to determine whether subcutaneous injection of recombinant canine interferon-γ (rCaIFN-γ) 1h before general anesthesia with a combination of propofol and isoflurane (P-I) changes the cytotoxic activity of natural killer (NK) cells during anesthesia in dogs. Nine clinically healthy beagles were assigned to one of two groups: rCaIFN-γ-treated group (n=5) and control group (no treatment, n=4). One hour before P-I anesthesia, rCaIFN-γ was subcutaneously injected at a dose of 1×10(4)U/kg body weight for the test group and physiologic saline was subcutaneously injected for the control group...
October 26, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29109627/temperature-management-under-general-anesthesia-compulsion-or-option
#15
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/29101165/myocardial-contrast-echocardiography-in-mice-technical-and-physiological-aspects
#16
Melissa Verkaik, Erik van Poelgeest, Rick F J Kwekkeboom, Piet M Ter Wee, Charissa E van den Brom, Marc G Vervloet, Etto C Eringa
Myocardial contrast echocardiography (MCE) offers the opportunity to study myocardial perfusion defects in mice in detail. The value of MCE compared to SPECT, PET and CT consists of high spatial resolution, the possibility of quantification of blood volume and relatively low costs. Nevertheless, a number of technical and physiological aspects should be considered to ensure reproducibility among research groups. The aim of this overview is to describe technical aspects of MCE and the physiological parameters that influence myocardial perfusion data obtained with this technique...
November 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29078680/nonintubated-uniportal-vats-pulmonary-anatomical-resections
#17
REVIEW
Carlos Galvez, Jose Navarro-Martinez, Sergio Bolufer, Francisco Lirio, Julio Sesma, Juan Manuel Corcoles
Nonintubated procedures have widely developed during the last years, thus nowadays major anatomical resections are performed in spontaneously breathing patients in some centers. In an attempt for combining less invasive surgical approaches with less aggressive anesthesia, nonintubated uniportal video-assisted thoracic surgery (VATS) lobectomies and segmentectomies have been proved feasible and safe, but there are no comparative trials and the evidence is still poor. A program in nonintubated uniportal major surgery should be started in highly experienced units, overcoming first a learning period performing minor procedures and a training program for the management of potential crisis situations when operating on these patients...
2017: Journal of visualized surgery
https://www.readbyqxmd.com/read/29072862/lymph-drainage-from-the-chylocyst-induced-hemodilution-in-an-in-vivo-rabbit-study
#18
Kumiko Ajima, Yoshiko Kawai, Daisuke Maejima, Shigeru Suzuki, Sachiho Yano, Moyuru Hayashi, Atsushi Katsumata, Maki Kaidoh, Yumiko Yokoyama, Toshio Ohhashi
To confirm our previous study that abdominal respiration has induced hemodilution in human subjects, we performed in-vivo experiments involving anesthetized rabbits. Fifteen 6- to 7-month-old male Japanese white rabbits were used in the animal experiments. Anesthesia was maintained with 2.5%-3.0% isoflurane under N2O + 100% O2 inhalation. Ventilation was maintained at 40 mL/breath for 20 breaths/min. Physiological saline solution was administered at rated 18 mL/h during the experiments. First, we attempted to evaluate lymph flow through the thoracic duct using Sonazoid-based contrast-enhanced ultrasound (CEUS)-guided method and then investigated the effects of manual lymph drainage of the chylocyst on the numbers of red blood cells (RBC), hematocrit (Ht) levels, and the blood concentrations of total protein (TP) and hemoglobin (Hb)...
October 26, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/29070855/cooling-combined-with-hyperoxic-co2-anesthesia-is-effective-in-improving-the-air-exposure-duration-of-tilapia
#19
Wei-Liang Guan, Mou-Ming Zhao, Tian-Tian Liu, Xing Fan, De-Wei Chen
Tilapia were subjected to cooling (CO, a stepwise reduction in temperature from 30 °C to 15 °C), anesthesia (AN, anesthetized by hyperoxic carbon dioxide), air exposure (AE, exposed to air) and cold tolerance (CT, in 15 °C water) treatments, and the physiological responses were determined after the treatments. CO followed by AN treatment for tilapia could meet the criteria of an ideal anesthetic. Fish were deeply sedated within 69 s, completely anesthetized within 276 s and recovered within 308 s without any mortality...
October 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29061269/comparison-of-percutaneous-versus-open-femoral-cutdown-access-for-endovascular-repair-of-ruptured-abdominal-aortic-aneurysms
#20
COMPARATIVE STUDY
Samuel L Chen, Nii-Kabu Kabutey, Matthew D Whealon, Isabella J Kuo, Roy M Fujitani
OBJECTIVE: Ruptured endovascular aortic aneurysm repair (REVAR) is being increasingly used to treat ruptured abdominal aortic aneurysms (rAAAs). However, the comparison between totally percutaneous (pREVAR) vs femoral cutdown (cREVAR) access for REVAR has not been studied. We used a national surgical database to evaluate the 30-day outcomes in patients undergoing pREVAR vs cREVAR. METHODS: Patients who underwent EVAR for rAAA between 2011 and 2014, inclusively, were studied in the American College of Surgeons (ACS) National Surgical Quality Improvement Program (NSQIP) targeted vascular database...
November 2017: Journal of Vascular Surgery
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