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Intraoperative mapping

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https://www.readbyqxmd.com/read/29775147/intraoperative-cochlear-nerve-mapping-with-the-mobile-cochlear-nerve-compound-action-potential-tracer-in-vestibular-schwannoma-surgery
#1
Nobuyuki Watanabe, Takuya Ishii, Kazuhiko Fujitsu, Shogo Kaku, Teruo Ichikawa, Kosuke Miyahara, Tomu Okada, Shin Tanino, Yasuhiro Uriu, Yuichi Murayama
OBJECTIVE The authors describe the usefulness and limitations of the cochlear nerve compound action potential (CNAP) mobile tracer (MCT) that they developed to aid in cochlear nerve mapping during vestibular schwannoma surgery (VSS) for hearing preservation. METHODS This MCT device requires no more than 2 seconds for stable placement on the nerve to obtain the CNAP and thus is able to trace the cochlear nerve instantaneously. Simultaneous bipolar and monopolar recording is possible. The authors present the outcomes of 18 consecutive patients who underwent preoperative useful hearing (defined as class I or II of the Gardner-Robertson classification system) and underwent hearing-preservation VSS with the use of the MCT...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29766779/technetium-99m-based-radiopharmaceuticals-in-sentinel-lymph-node-biopsy-gynecologic-oncology-perspective
#2
Kamil Zalewski, Malgorzata Benke, Bartlomiej Mirocha, Jakub Radziszewski, Magdalena Chechlinska, Magdalena Kowalewska
Technetium (99mTc)-radiolabeled colloids are popular tracers used to map lymphatic vessels and regional lymph nodes (LNs). The regional LN status is a significant determinant of cancer stage and patient prognosis, and strongly influences treatment. Regional LN dissection has become part of surgical treatment. However, not all patients with LN involvement benefit from extensive lymphadenectomy in terms of prolonged survival. Moreover, overtreatment of patients with localized disease carries unnecessary risk of complications...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29761994/-study-on-precise-localization-of-intraoperative-matrix-electrode
#3
Tao Jiang, Huan Hu, Qionglin Fu, Hongmin Bai
In order to accurately localize the image coordinates and serial numbers of intraoperative subdural matrix electrodes, a matrix electrode localization algorithm for image processing is proposed in this paper. Firstly, by using point-by-point extended electrode location algorithm, the electrode is expanded point-by-point vertically and horizontally, and the initial coordinates and serial numbers of each electrode are determined. Secondly, the single electrode coordinate region extraction algorithm is used to determine the best coordinates of each electrode, so that the image coordinates and serial numbers of all electrodes are determined point-by-point...
December 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29759510/predicting-morbidity-after-robotic-partial-nephrectomy-the-effect-of-tumor-environment-and-patient-related-factors
#4
Zine-Eddine Khene, Benoit Peyronnet, Neil J Kocher, Haley Robyak, Corentin Robert, Benjamin Pradere, Emmanuel Oger, Solène-Florence Kammerer-Jacquet, Grégory Verhoest, Nathalie Rioux-Leclercq, Romain Mathieu, Jay D Raman, Karim Bensalah
PURPOSE: To investigate the effect of tumor and nontumor related parameters on perioperative outcomes of robotic partial nephrectomy (RPN). PATIENTS AND METHODS: Patients who underwent RPN for a localized renal tumor at 2 institutions between June 2010 and November 2016 were reviewed. RENAL and Mayo adhesive probability (MAP) scores were calculated and information on comorbid conditions including ASA score, performance status, Charlson's comorbidity index (CCI), and history of cardiovascular disease was collected...
May 11, 2018: Urologic Oncology
https://www.readbyqxmd.com/read/29756691/cerebrovascular-autoregulation-impairments-during-cardiac-surgery-with-cardiopulmonary-bypass-are-related-to-postoperative-cognitive-deterioration-prospective-observational-study
#5
Birute Kumpaitiene, Milda Svagzdiene, Edmundas Sirvinskas, Virginija Adomaitiene, Vytautas Petkus, Rolandas Zakelis, Solventa Krakauskaite, Romanas Chomskis, Arminas Ragauskas, Teodoro F Dagi, Rimantas Benetis
BACKGROUND: Post-operative cognitive dysfunction (POCD) occurs in approximately 33-83% of patients after cardiac surgery with cardiopulmonary bypass (CPB). Recent clinical data suggest that real-time, intraoperative monitoring of patient- specific cerebrovascular autoregulation (CA) may help to prevent POCD by detecting individual critical limits for mean arterial pressure (MAP) outside which CA is impaired. Objectives of the study were to detect the episodes of impaired CA during cardiac surgery with CPB, and to investigate the association between CA impairment and POCD...
May 11, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29750694/impact-of-2-distinct-levels-of-mean-arterial-pressure-on-near-infrared-spectroscopy-during-cardiac-surgery-secondary-outcome-from-a-randomized-clinical-trial
#6
Frederik Holmgaard, Anne G Vedel, Theis Lange, Jens C Nilsson, Hanne B Ravn
BACKGROUND: Near-infrared spectroscopy (NIRS) is used worldwide to monitor regional cerebral oxygenation (rScO2) during cardiopulmonary bypass (CPB). Intervention protocols meant to mitigate cerebral desaturation advocate to increase mean arterial pressure (MAP) when cerebral desaturation occurs. However, the isolated effect of MAP on rScO2 is uncertain. The aim of the present study was in a randomized, blinded design to elucidate the effect of 2 distinct levels of MAP on rScO2 values during CPB...
May 9, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29742889/intraoperative-neurophysiological-monitoring-a-review-of-techniques-used-for-brain-tumor-surgery-in-children
#7
REVIEW
Keewon Kim, Charles Cho, Moon-Suk Bang, Hyung-Ik Shin, Ji-Hoon Phi, Seung-Ki Kim
Intraoperative monitoring (IOM) utilizes electrophysiological techniques as a surrogate test and evaluation of nervous function while a patient is under general anesthesia. They are increasingly used for procedures, both surgical and endovascular, to avoid injury during an operation, examine neurological tissue to guide the surgery, or to test electrophysiological function to allow for more complete resection or corrections. The application of IOM during pediatric brain tumor resections encompasses a unique set of technical issues...
May 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29733992/neuronavigation-guided-corticospinal-tract-mapping-in-brainstem-tumor-surgery-better-preservation-of-motor-function
#8
Zhibao Li, Mingran Wang, Liwei Zhang, Xing Fan, Xiaorong Tao, Lei Qi, Miao Ling, Xiong Xiao, Yuliang Wu, Dongze Guo, Hui Qiao
BACKGROUND: A new method in brainstem surgery, neuronavigation (NN)-guided corticospinal tract (CST) mapping, was used in a retrospective study of patients undergoing brainstem tumor surgery. METHODS: We studied 40 patients with a brainstem tumor who were enrolled in this study. Patients whose worst preoperative muscle strength of the four limbs was greater than three levels from normal on the Lovett scale were divided into two groups: a treatment group of 21 patients that included NN-guided CST mapping and routine intraoperative neurophysiology monitoring (IONM), and a control group of 19 patients that included routine NN and routine IONM...
May 4, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29730348/epicardial-intraoperative-3-d-mapping-of-wolff-parkinson-white-in-a-child-with-ebstein-s-anomaly
#9
James C Perry, Andras Bratincsak, Suzanne Shepard, Matthew R Williams, Joseph Loslo, Raghav Murthy, John J Lamberti
Catheter ablation of arrhythmias in small patients has inherent significant risk due to patient, catheter, and lesion size. Heart block, perforation and coronary damage may occur. This report shows adaptation of a 3-D electroanatomic mapping system for intraoperative use in a small patient with Ebstein's anomaly undergoing Cone procedure and bidirectional Glenn. Use of this technique gave clear identification of the epicardial insertion points of two accessory pathways causing Wolff-Parkinson-White and resistant episodes of supraventricular tachycardia...
May 3, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29726775/parietal-association-deficits-in-patients-harboring-parietal-lobe-gliomas-a-prospective-study
#10
Evangelia Liouta, George Stranjalis, Aristotelis V Kalyvas, Christos Koutsarnakis, Stavroula Pantinaki, Faidon Liakos, Spyros Komaitis, Lampis C Stavrinou
OBJECTIVE Although the parietal lobe is a common site for glioma formation, current literature is scarce, consists of retrospective studies, and lacks consistency with regard to the incidence, nature, and severity of parietal association deficits (PADs). The aim of this study was to assess the characteristics and incidence of PADs in patients suffering from parietal lobe gliomas through a prospective study and a battery of comprehensive neuropsychological tests. METHODS Between 2012 and 2016 the authors recruited 38 patients with glioma confined in the parietal lobe...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29705740/clinical-use-of-organic-near-infrared-fluorescent-contrast-agents-in-image-guided-oncologic-procedures-and-its-potential-in-veterinary-oncology
#11
REVIEW
Sophie Favril, Eline Abma, Francesco Blasi, Emmelie Stock, Nausikaa Devriendt, Katrien Vanderperren, Hilde de Rooster
One of the major challenges in surgical oncology is the intraoperative discrimination of tumoural versus healthy tissue. Until today, surgeons rely on visual inspection and palpation to define the tumoural margins during surgery and, unfortunately, for various cancer types, the local recurrence rate thus remains unacceptably high. Near-infrared (NIR) fluorescence imaging is an optical imaging technique that can provide real-time preoperative and intraoperative information after administration of a fluorescent probe that emits NIR light once exposed to a NIR light source...
April 28, 2018: Veterinary Record
https://www.readbyqxmd.com/read/29704687/clinical-experience-of-autologous-blood-transfusion-in-neurosurgery-prospective-study-in-central-india
#12
Harshad Patil, Deepa Navakar, Laxmikant Banabokade, Nitin Garg
OBJECTIVE: The purpose of this study was to evaluate the benefits of intraoperative autologous blood transfusion in intracranial procedures and to conserve precious homologous blood due to shortage of donor and associated complications. METHODS: This was a prospective study performed at Bansal hospital, Bhopal. Predetermined autologous blood was collected in a well labelled bag containing citrate phosphate dextrose adenine (CPDA) solution after induction of general anaesthesia...
April 25, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29701760/optical-techniques-for-perfusion-monitoring-of-the-gastric-tube-after-esophagectomy-a-review-of-technologies-and-thresholds
#13
S M Jansen, D M de Bruin, M I van Berge Henegouwen, S D Strackee, D P Veelo, T G van Leeuwen, S S Gisbertz
Anastomotic leakage is one of the most severe complications after esophageal resection with gastric tube reconstruction. Impaired perfusion of the gastric fundus is seen as the main contributing factor for this complication. Optical modalities show potential in recognizing compromised perfusion in real time, when ischemia is still reversible. This review provides an overview of optical techniques with the aim to evaluate the (1) quantitative measurement of change in perfusion in gastric tube reconstruction and (2) to test which parameters are the most predictive for anastomotic leakage...
April 26, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29701424/perioperative-family-centered-care-nursing-interventions-that-support-child-and-family-s-emotional-management
#14
Dario Antunes, Paula Diogo
INTRODUCTION: Hospitalization is a negative tonality experience for both child and family, being fear and anxiety their emotional mirror. Concerning the surgical experience, the environment, invasiveness, fear of pain, of not waking up from anaesthesia and parental separation are both causes and enhancers of child and family perioperative distress. A study concerning parent's emotional experience of child's submitted to cardiac surgery, refer guilt for their son's cardiopathy, a roller coaster of emotions, impotence and being seated on pins and needles while waiting during the surgery...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29701042/-effects-of-transcutaneous-electrical-acupoint-stimulation-on-quality-of-recovery-during-early-period-after-laparoscopic-cholecystectomy
#15
Zhihua Mi, Ju Gao, Xiaoping Chen, Yali Ge, Kaixin Lu
OBJECTIVE: To evaluate the effect of transcutaneous electrical acupoint stimulation (TEAS) on the quality of recovery during the early period after laparoscopic cholecystectomy and the dosage of anesthetic and analgesic. METHODS: One hundred patients who received laparoscopic cholecystectomy with gradeⅠand Ⅱ of American Society of Anesthesiologists (ASA) criteria were randomly assigned into an observation group and a control group according to random number table, 50 cases in each group...
March 12, 2018: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29683007/perioperative-noninvasive-cardiac-output-monitoring-in-parturients-undergoing-cesarean-delivery-with-spinal-anesthesia-and-prophylactic-phenylephrine-drip-a-prospective-observational-cohort-study
#16
Sharon Orbach-Zinger, Ilya Bizman, Shlomo Firman, Shaul Lev, Roi Gat, Eran Ashwal, Mordehay Vaturi, Eitan Razinski, Atara Davis, Anat Shmueli, Leonid A Eidelman
INTRODUCTION: Spinal anesthesia for cesarean delivery is associated with high incidence of hypotension and is most often prevented by a prophylactic phenylephrine infusion (PPI). In this study, we aimed to identify maternal hemodynamic changes both intraoperatively and postoperatively with the use of the NICaS noninvasive cardiac output monitor in healthy singleton parturients undergoing cesarean delivery (CD) with spinal anesthesia and PPI. METHODS: Healthy term women undergoing spinal anesthesia for singleton CD were enrolled...
April 22, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29682074/language-mapping-in-awake-surgery-report-of-two-cases-with-review-of-language-networks
#17
Liang Hooi Lim, Zamzuri Idris, Faruque Reza, Wan Mohd Nazaruddin Wan Hassan, Laila Abd Mukmin, Jafri Malin Abdullah
The role of language in communication plays a crucial role in human development and function. In patients who have a surgical lesion at the functional language areas, surgery should be intricately planned to avoid incurring further morbidity. This normally requires extensive functional and anatomical mappings of the brain to identify regions that are involved in language processing and production. In our case report, regions of the brain that are important for language functions were studied before surgery by employing (a) extraoperative methods such as functional magnetic resonance imaging, transmagnetic stimulation, and magnetoencephalography; (b) during the surgery by utilizing intraoperative awake surgical methods such as an intraoperative electrical stimulation; and (c) a two-stage surgery, in which electrical stimulation and first mapping are made thoroughly in the ward before second remapping during surgery...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29682064/awake-craniotomy-with-noninvasive-brain-mapping-by-3-tesla-functional-magnetic-resonance-imaging-for-excision-of-low-grade-glioma-a-case-of-a-young-patient-from-pakistan
#18
Atta Ul Aleem Bhatti, Nasir Khan Jakhrani, Maria Adnan Parekh
The past few years have seen increasing support for gross total resection in the management of low-grade gliomas (LGGs), with a greater extent of resection correlated with better overall survival, progression-free survival, and time to malignant transformation. There is consistent evidence in literature supporting extent of safe resection as a good prognostic indicator as well as positively affecting seizure control, symptomatic relief in pressure symptoms, and longer progression-free and total survival. The operative goal in most LGG cases is to maximize the extent of resection for these benefits while avoiding postoperative neurologic deficits...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29678619/effect-of-goal-directed-fluid-therapy-on-early-cognitive-function-in-elderly-patients-with-spinal-stenosis
#19
Na Zhang, Min Liang, Dan-Dan Zhang, Yi-Rong Xiao, Yan-Zhen Li, You-Guang Gao, Hong-da Cai, Xian-Zhong Lin, Cai-Zhu Lin, Kai Zeng, Xiao-Dan Wu
PURPOSE: To explore effect of goal-directed fluid therapy (GDFT) on early cognitive function in elderly patients with spinal stenosis. METHODS: 83 elderly patients with spinal stenosis were randomly classified into two groups: control group (n = 40) and GDFT group (n = 43). The Montreal Cognitive Assessment (MoCA) score, IL-6 and S100β levels, hemodynamic parameters, cerebral oxygen saturation (rSO2 ), arterial lactic acid values, output of surgery, operation time and cases of hypotension, intraoperative complications within 7 days were recorded for all patients...
April 17, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29668909/effect-of-ephedrine-on-gastric-conduit-perfusion-measured-by-laser-speckle-contrast-imaging-after-esophagectomy-a-prospective-in-vivo-cohort-study
#20
S M Jansen, D M de Bruin, M I van Berge Henegouwen, P R Bloemen, S D Strackee, D P Veelo, T G van Leeuwen, S S Gisbertz
Compromised perfusion due to ligation of arteries and veins in esophagectomy with gastric tube reconstruction often (5-20%) results in necrosis and anastomotic leakage, which relate to high morbidity and mortality (3-4%). Ephedrine is used widely in anesthesia to treat intraoperative hypotension and may improve perfusion by the increase of cardiac output and mean arterial pressure (MAP). This study tests the effect of ephedrine on perfusion of the future anastomotic site of the gastric conduit, measured by laser speckle contrast imaging (LSCI)...
April 13, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
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