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https://www.readbyqxmd.com/read/28529059/a-review-of-human-neuroimaging-investigations-involved-with-central-autonomic-regulation-of-baroreflex-mediated-cardiovascular-control
#1
Derek S Kimmerly
Effective regulation of central blood volume and arterial pressure is critical for optimal cardiovascular homeostasis. Inadequate regulation of mean arterial pressure has important pathophysiological implications including syncope, end organ damage, and stroke. Such regulation requires appropriate central integration of barosensory afferents and reflex autonomic control of the heart and blood vessels. The neural pathways involved with the baroreflex include brainstem nuclei that receive modulatory input from higher brain centres...
May 15, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28526144/pulmonary-vasodilators-and-anesthesia-considerations
#2
REVIEW
Jeremy B Green, Brendon Hart, Elyse M Cornett, Alan D Kaye, Ali Salehi, Charles J Fox
Pulmonary hypertension (PH) is a complex disease process of the pulmonary vasculature system characterized by elevated pulmonary arterial pressures. Patients with PH are at increased risk for morbidity and mortality, including intraoperatively and postoperatively. Appreciation by the clinical anesthesiologist of the pathophysiology of PH is warranted. Careful and meticulous strategy using appropriate anesthetic medications, pulmonary vasodilator and inotropic agents, and careful fluid management all increase the likelihood of the best possible outcome in this challenging patient population...
June 2017: Anesthesiology Clinics
https://www.readbyqxmd.com/read/28509777/ultrasound-guided-percutaneous-cryoneurolysis-for-acute-pain-management-a-case-report
#3
Rodney A Gabriel, John J Finneran, Deepa Asokan, Andrea M Trescot, NavParkash S Sandhu, Brian M Ilfeld
We report 3 different cases in which ultrasound-guided percutaneous cryoneurolysis was performed to treat acute pain: 1 patient with refractory incisional pain after percutaneous nephrolithotomy; 1 patient with burns to the foot; and 1 patient with pain from iliac crest grafting. Acute pain associated with surgery or injury is a challenge to treat with local anesthetic-based regional anesthesia techniques when the anticipated pain duration exceeds a few days. Cryoneurolysis is an alternative analgesic method that utilizes extremely cold temperatures to reversibly ablate peripheral nerves and is potentially a novel method for acute pain management...
May 12, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28506256/aav-vector-distribution-in-the-mouse-respiratory-tract-following-four-different-methods-of-administration
#4
Lisa A Santry, Joelle C Ingrao, Darrick L Yu, Jondavid G de Jong, Laura P van Lieshout, Geoffrey A Wood, Sarah K Wootton
BACKGROUND: Targeted delivery of gene therapy vectors to the mouse respiratory tract is often performed via intranasal or intratracheal administration; however, there can be a great deal of variability between these methods, which could potentially influence experimental results. Improving the accuracy and precision of lung delivery will not only reduce the number of animals required to detect statistically significant differences, but may reduce the variability of studies from different laboratories...
May 15, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28484490/intraluminal-administration-of-resiniferatoxin-protects-against-clostridium-difficile-toxin-a-induced-colitis
#5
Steven R Vigna
Clostridium difficile toxin A is a colonic inflammatory agent that acts partially by activation of TRPV1 (transient receptor potential vanilloid type 1). Resiniferatoxin (RTX) is an excitotoxin that activates TRPV1 at low concentrations and defunctionalizes TRPV1 at high concentrations. RTX at various doses was injected intraluminally into isolated ileal segments in anesthetized rats. After 3 hours, the treated segments were removed and inflammation was assessed. This acute treatment with RTX resulted in biphasic responses: (1) an increase in inflammation similar to that caused by toxin A and capsaicin at low doses of up to 100 ng RTX and (2) no inflammatory effect of RTX at higher doses (1-100 μg), consistent with a defunctionalizing or neurotoxic effect of RTX at high doses...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28477261/barriers-to-collaborative-anesthetic-care-between-anesthesiologists-and-nurses-on-the-labour-and-delivery-unit-a-study-using-a-modified-delphi-technique
#6
Lillia Y Fung, Kristi Downey, Nancy Watts, Jose C A Carvalho
INTRODUCTION: The practice of obstetrical anesthesia relies on collaborative effort between anesthesiologists and nurses, but teamwork remains a challenge. We sought to identify a consensus on the perceived barriers to collaborative care between anesthesiologists and perinatal nurses in a Canadian tertiary labour and delivery (L&D) unit. METHODS: A cross-sectional consensus-building study was conducted using a modified Delphi technique. We aimed to reach consensus on the barriers to collaborative care as well as to identify the reasons behind the issues and possible interventions...
May 5, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28476589/in-vivo-stimulus-presentation-to-the-mouse-vomeronasal-system-surgery-experiment-setup-and-software
#7
Michal Yoles-Frenkel, Oksana Cohen, Rohini Bansal, Noa Horesh, Yoram Ben-Shaul
BACKGROUND: Achieving controlled stimulus delivery is a major challenge in the physiological analysis of the vomeronasal system (VNS). NEW METHOD: We provide a comprehensive description of a setup allowing controlled stimulus delivery into the vomeronasal organ (VNO) of anesthetized mice. VNO suction is achieved via electrical stimulation of the sympathetic nerve trunk (SNT) using cuff electrodes, followed by flushing of the nasal cavity. Successful application of this methodology depends on several aspects including the surgical preparation, fabrication of cuff electrodes, experimental setup modifications, and the stimulus delivery and flushing...
May 3, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28474988/premedication-with-fentanyl-midazolam-improves-sevoflurane-anesthesia-for-surgical-intervention-in-laboratory-mice
#8
Miriam Lipiski, Margarete Arras, Paulin Jirkof, Nikola Cesarovic
Balanced anesthesia allows for a reduced dosage of each component, while inducing general anesthesia of sufficient depth with potentially fewer side effects. Here, we compare two anesthetic protocols combining sevoflurane anesthesia with pre-medication (ketamine [K] or fentanyl-midazolam [FM]) to a sevoflurane monoanesthesia (S) concerning their ability to provide reliable anesthesia suitable for moderate surgery in laboratory mice. Twenty-one female C57BL/6J mice assigned randomly to one of three protocols underwent a 50-min anesthesia and a sham embryo transfer...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28466755/perioperative-management-of-cardiac-transplant-recipients-undergoing-noncardiac-surgery-unique-challenges-created-by-advancements-in-care
#9
Paul T Jurgens, Christina L Aquilante, Robert L Page, Amrut V Ambardekar
Advancements in postcardiac transplant care have resulted in significant reductions in morbidity and increased life expectancy for cardiac transplant recipients. Consequently, many cardiac transplant recipients are living long enough to require subsequent noncardiac surgery. The perioperative care of heart transplant recipients presents a unique challenge as many of the common preoperative risk assessments do not apply to a transplanted heart, immunosuppressive medications have side effects and potential for drug-drug interactions, and the denervated heart results in an altered autonomic physiology and response to medications...
May 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28465076/dexmedetomidine-as-an-adjuvant-for-perioperative-pain-management-in-adolescents-undergoing-bariatric-surgery-an-observational-cohort-study
#10
Janelle D Vaughns, Celeste Martin, Jonathon Nelson, Evan Nadler, Zenaide M Quezado
BACKGROUND: The anesthetic management of adolescents undergoing bariatric surgery presents a number of challenges, including increased risk of postoperative opioid-related respiratory depression. These patients could benefit from adjunctive analgesics with opioid-sparring effects to optimize perioperative pain control. Dexmedetomidine, a selective α2-adrenoreceptor agonist, has sedative and analgesic properties with no respiratory depressant effects. OBJECTIVE: To determine the effect of intraoperative dexmedetomidine on opioid requirement and perioperative pain management in obese adolescents undergoing bariatric surgery...
April 19, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28459724/anesthetic-challenges-for-posterior-spine-surgery-in-patient-with-left-ventricular-assist-device-a-case-report
#11
J Pablo Kollmar, Douglas A Colquhoun, Julie L Huffmyer
With the growing rate of left ventricular assist device (LVAD) implantation, patients with end-stage heart failure and LVAD support are presenting for a variety of noncardiac surgeries. We describe a case of urgent posterior lumbar decompression for spinal stenosis in a 73-year-old man with HeartMateII LVAD, which presented significant anesthetic challenges in terms of positioning, blood loss, and coagulopathy.
April 28, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28459720/intravenous-caffeine-rescue-for-postoperative-hypoventilation-in-a-16-year-old-with-trisomy-10-a-case-report
#12
Michael Evans, Humphrey Lam, Thomas Austin
Trisomy 10 is a rare disorder, with only 35 cases reported in the literature. Anesthetic management may be challenging in this patient population because of craniofacial, cardiac, and renal abnormalities commonly seen in the disorder. We describe a 16-year-old male with an anesthetic history notable for prolonged emergence, postoperative hypoxia, postoperative reintubation, and unexpected hospital admission presenting for dental extraction of impacted teeth. We utilized intravenous caffeine, a respiratory stimulant used in preterm infants, to facilitate recovery from anesthesia...
April 28, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28459718/anesthetic-management-of-a-patient-with-epidermolysis-bullosa-requiring-major-orthopedic-surgery-a-case-report
#13
Kim M Strupp, Jennifer A Zieg, Brian Johnson, Judit M Szolnoki
Epidermolysis bullosa (EB) encompasses a wide spectrum of rare genetic disorders in which an abnormality in collagen leads to loss or absence of normal intracellular bridges. Friction or shear forces on the skin and mucosa result in blister, bullae, and scar formation. We present our experience in the management of a patient with EB who required multiple procedures for squamous cell carcinoma of the left arm, including forequarter amputation. We describe the anesthetic challenges in caring for a patient with EB undergoing major orthopedic surgery...
April 28, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28456484/hypersensitivity-reactions-in-patients-receiving-hemodialysis
#14
REVIEW
Lavjay Butani, Gianfranco Calogiuri
OBJECTIVE: To describe hypersensitivity reactions in patients receiving maintenance hemodialysis. DATA SOURCES: PubMed search of articles published during the past 30 years with an emphasis on publications in the past decade. STUDY SELECTIONS: Case reports and review articles describing hypersensitivity reactions in the context of hemodialysis. RESULTS: Pharmacologic agents are the most common identifiable cause of hypersensitivity reactions in patients receiving hemodialysis...
April 26, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28447624/wireless-power-transfer-to-millimeter-sized-gastrointestinal-electronics-validated-in-a-swine-model
#15
Abubakar Abid, Jonathan M O'Brien, Taylor Bensel, Cody Cleveland, Lucas Booth, Brian R Smith, Robert Langer, Giovanni Traverso
Electronic devices placed in the gastrointestinal (GI) tract for prolonged periods have the potential to transform clinical evaluation and treatment. One challenge to the deployment of such gastroresident electronics is the difficulty in powering millimeter-sized electronics devices without using batteries, which compromise biocompatibility and long-term residence. We examined the feasibility of leveraging mid-field wireless powering to transfer power from outside of the body to electronics at various locations along the GI tract...
April 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28422911/do-vented-chest-seals-differ-in-efficacy-an-experimental-evaluation-using-a-swine-hemopneumothorax-model
#16
Bijan S Kheirabadi, Irasema B Terrazas, Nahir Miranda, Spc Amber N Voelker, Francoise Arnaud, Harold G Klemcke, Frank F Butler, Michael A Dubick
OBJECTIVE: Hemopneumothorax (HPTX) is the second leading cause of potentially preventable death among combat casualties. We investigated the ability of five FDA-approved non-occlusive chest seals (CSs) to seal a bleeding chest wound and prevent tension HPTX in a swine model. METHODS: Following instrumentation, an open chest wound was created in the left thorax of spontaneously air-breathing anesthetized pigs (n=26, 43 Kg). Autologous fresh blood (226 mL) was then infused into the pleural cavity to produce HPTX...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28420006/increased-visfatin-expression-is-associated-with-nuclear-factor-kappa-%C3%AE-in-obese-ovalbumin-sensitized-male-wistar-rats-trachea
#17
Mohammad Reza Aslani, Rana Keyhanmanesh, Mohammad Reza Alipour
OBJECTIVE: To investigate the effects of diet-induced obesity on the expression of nuclear factor-kappa β and visfatin messenger RNA in male Wistar rats' tracheae after sensitization with ovalbumin (OVA). MATERIALS AND METHODS: Twenty (20) male Wistar rats were divided into four groups (n=5 for each group), that included a control fed normal diet (ND), and fed normal diet OVA-sensitized (S+ND), high-fat diet (HFD) only, (diet induced obesity) and high-fat diet OVA-sensitized (S+HFD)...
April 16, 2017: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/28413524/perioperative-complications-in-endovascular-neurosurgery-anesthesiologist-s-perspective
#18
Megha U Sharma, Pragati Ganjoo, Daljit Singh, Monica S Tandon, Jyotsna Agarwal, Durga P Sharma, Anita Jagetia
BACKGROUND: Endovascular neurosurgery is known to be associated with potentially serious perioperative complications that can impact the course and outcome of anesthesia. We present here our institutional experience in the anesthetic management of various endovascular neurosurgical procedures and their related complications over a 10-year period. METHODS: Data was obtained in 240 patients pertaining to their preoperative status, details of anesthesia and surgery, perioperative course and surgery-related complications...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28403120/detection-of-pulmonary-embolism-during-cardiac-arrest-ultrasonographic-findings-should-be-interpreted-with-caution
#19
Rasmus Aagaard, Philip Caap, Nicolaj C Hansson, Morten T Bøtker, Asger Granfeldt, Bo Løfgren
OBJECTIVES: The aim of this study was to test the hypothesis that the right ventricle is more dilated during resuscitation from cardiac arrest caused by pulmonary embolism, compared with hypoxia and primary arrhythmia. DESIGN: Twenty-four pigs were anesthetized and cardiac arrest was induced using three different methods. Pigs were resuscitated after 7 minutes of untreated cardiac arrest. Ultrasonographic images were obtained and the right ventricular diameter was measured...
April 11, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28379911/treatment-of-pregnant-patients-with-orthopaedic-trauma
#20
Nirmal Tejwani, Kevin Klifto, Christopher Looze, Christopher Scott Klifto
Fracture management in pregnant patients is challenging. Anatomic and physiologic changes in pregnancy increase the complexity of treatment. Maternal trauma increases the risk of fetal loss, preterm birth, placental abruption, cesarean delivery, and maternal death. Initial resuscitation and treatment in a facility equipped to handle the orthopaedic injury and preterm births are paramount. Pelvic and acetabular injuries are potentially life threatening. The benefits and risks of surgical treatment must be carefully considered...
May 2017: Journal of the American Academy of Orthopaedic Surgeons
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