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Microsurgery

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https://www.readbyqxmd.com/read/28098509/-compassionate-use-protocol-for-auditory-brainstem-implantation-in-neurofibromatosis-type-2-early-house-ear-institute-experience
#1
Daniel S Roberts, William H Slattery, Brian S Chen, Steve R Otto, Marc S Schwartz, Gregory P Lekovic
OBJECTIVE: To report the preliminary outcomes of auditory brainstem implantation (ABI) under a compassionate use protocol for two ABI devices that are not approved by the US Food and Drug Administration. METHODS: A retrospective review was performed of neurofibromatosis type 2 (NF2) patients who underwent microsurgery for vestibular schwannoma (VS) and placement of either the Cochlear ABI541 or Med-El Synchrony ABIs. Peri-operative and device- related complications were reviewed...
January 18, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28089863/prevention-of-thrombosis-in-hypercoagulable-patients-undergoing-microsurgery-a-novel-anticoagulation-protocol
#2
Jonas A Nelson, Cyndi U Chung, Andrew R Bauder, Liza C Wu
BACKGROUND: Hypercoagulable conditions are often considered relative contraindications to free flap reconstruction. This paper presents and critically examines a novel anticoagulation regimen developed to address this disease state. METHODS: Hypercoagulable patients who underwent free tissue transfer between 2007 and 2015 were identified. From 2011, all such patients were subjected to a novel anticoagulation protocol involving an intravenous bolus of 2000 U of unfractionated heparin prior to microvascular pedicle anastomosis, followed by a heparin infusion at 500 U/h, which was postoperatively increased to therapeutic levels...
December 18, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28081463/analysis-of-the-results-of-recurrent-intracranial-meningiomas-treated-with-re-radiosurgery
#3
Moinay Kim, Do Hee Lee, Hyun Jung Kim Rn, Young Hyun Cho, Jeong Hoon Kim, Do Hoon Kwon
OBJECTS: Meningioma is the most common intracranial neoplasm, comprising approximately 30% of all primary intracranial tumors (Claus et al., 2005) [1]. Treatment options include observation, microsurgical resection, stereotactic radiosurgery (SRS), and whole brain radiation therapy (WBRT). Gamma knife radiosurgery (GKRS) is a very effective treatment for intracranial meningiomas; previous studies showed the tumor control rate at 5-10 years of follow-up as 84.3%-100% in all cases (Feigl et al...
December 29, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28068754/intraventricular-cavernous-malformation-review-of-the-literature-and-report-of-three-cases-with-neuroendoscopic-resection
#4
Masoud Shirvani, Alireza Hajimirzabeigi
Intraventricular cavernomas (IVCs) are extremely infrequent and only occur in 2.8 to 10% of patients with cerebral cavernomas. We describe three IVC cases and briefly review previously documented IVC cases in PubMed. Among 136 IVC cases, the mean age of the patients was 36.5 years; the male-to-female ratio was 0.8. The most frequent location was the lateral ventricle (52.6%), and most of the clinical symptoms (74%) were related to mass effects on adjacent brain tissues. Intraventricular hemorrhage occurred in 22...
January 9, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28068303/delayed-vestibular-schwannoma-regrowth-following-shrinkage-after-stereotactic-radiosurgery-implication-for-life-long-surveillance
#5
Emma Stapleton, John A Crowther, Richard Locke, Georgios Kontorinis
OBJECTIVE: To enhance understanding of the behavior of vestibular schwannomas (VS) after stereotactic radiosurgery (SRS), including the potential for late tumor regrowth, and the need for lifelong radiological and clinical surveillance. PATIENTS: From a total of 540 patients with VS and out of 95 patients receiving SRS for their growing VS, the cases of two women patients aged 58 and 59 years with medium sized, growing VS are presented. INTERVENTION: Both patients were treated with SRS...
February 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28060338/a-submerged-filter-paper-sandwich-for-long-term-ex-ovo-time-lapse-imaging-of-early-chick-embryos
#6
Manuel Schmitz, Ben K A Nelemans, Theodoor H Smit
Due to its availability, low cost, flat geometry, and transparency, the ex ovo chick embryo has become a major vertebrate animal model for the study of morphogenetic events, such as gastrulation(2), neurulation(3)(-)(5), somitogenesis(6), heart bending(7,8), and brain formation(9)(-)(13), during early embryogenesis. Key to understanding morphogenetic processes is to follow them dynamically by time-lapse imaging. The acquisition of time-lapse movies of chick embryogenesis ex ovo has been limited either to short time windows or to the need for an incubator to control temperature and humidity around the embryo(14)...
December 28, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059911/transanal-endoscopic-microsurgery-for-early-rectal-cancer-a-single-center-experience
#7
Conor H O'Neill, Joseph Platz, Jesse S Moore, Peter W Callas, Peter A Cataldo
BACKGROUND: There is debate regarding the appropriate use of transanal endoscopic microsurgery for rectal cancer. OBJECTIVE: This study analyzed our single-center experience with transanal endoscopic microsurgery for early rectal cancer. DESIGN: Medical charts of patients who underwent transanal endoscopic microsurgery were reviewed to determine lesion characteristics, as well as operative and treatment characteristics. Complications and recurrences were recorded...
February 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28052695/management-of-early-colonic-neoplasia-where-are-we-now-and-where-are-we-heading
#8
Gaius Longcroft-Wheaton, Pradeep Bhandari
There have been considerable advances in the endoscopic treatment of colorectal neoplasia. The development of endoscopic submucosal dissection and full thickness resection techniques is changing the way benign disease and early cancers are managed. This article reviews the evidence behind these new techniques and discusses where this field is likely to move in the future. Areas covered: A PubMed literature review of resection techniques for colonic neoplasia was performed. The clinical and cost effectiveness of endoscopic mucosal resection (EMR) is examined...
January 4, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28033624/-plastic-surgery-in-palliative-care-report-on-the-consensus-workshop-of-the-37th-annual-meeting-of-the-german-language-group-for-microsurgery-of-the-peripheral-nerves-and-vessels-dam-2016-in-bochum
#9
A Daigeler, M Lehnhardt, S Bauer, S Goldhammer, P M Vogt
Introduction: At the consensus meeting on "Plastic Surgery in the Palliative Situation" at the 37th Annual Meeting of the DAM 2015 in Bochum, treatment options were discussed with oncologists and palliative care anesthesiologists and recommendations were given. Methods: The literature was reviewed and the results of the expert-meeting options and limits of therapy were illustrated. The role of plastic surgery for palliative care patients was pointed out and recommendations given for successful cooperative treatment...
December 2016: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28028607/transoral-laser-microsurgery-for-t1b-glottic-cancer-review-of-51-cases
#10
Bernhard G Weiss, Friedrich Ihler, Yiannis Pilavakis, Hendrik A Wolff, Martin Canis, Christian Welz, Wolfgang Steiner
For the treatment of T1b glottic carcinoma, different treatment options, such as transoral laser microsurgery, open surgical techniques, and primary radiotherapy, are under discussion. In this context, the aim of the present study was to describe oncologic results and complication rates of transoral laser microsurgery in treatment of T1b glottic carcinoma. This is a retrospective unicenter chart review of patients treated at an academic tertiary referral center between 1986 and 2006. Fifty-one previously untreated T1b cases were exclusively treated by transoral laser microsurgery and included into this study, 47 were male, and 4 were female...
December 27, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28025603/evidence-and-evidence-gaps-of-laryngeal-cancer-surgery
#11
REVIEW
Susanne Wiegand
Surgical treatment of laryngeal cancer has been established for decades. In addition to total laryngectomy, which was first performed in 1873, a large number or organ preservation surgical techniques, like open partial laryngectomy, transoral laser microsurgery, and transoral robotic surgery have been developed. Studies on laryngeal cancer surgery are mainly retrospective case series and cohort studies. The evolution of chemoradiation protocols and their analysis in prospective randomized trials have led to an increasing acceptance of non-surgical treatment procedures...
2016: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/28019023/academic-productivity-of-faculty-associated-with-microsurgery-fellowships
#12
Qing Zhao Ruan, Joseph A Ricci, Jason Silvestre, Olivia A Ho, Bernard T Lee
BACKGROUND: The Hirsch index (h-index) is widely recognized as a reliable measure of academic productivity. While previous studies have applied the h-index to surgical disciplines, none have analyzed microsurgery faculty. This manuscript aims to examine the h-index of microsurgery fellowship faculty to categorize its applicability to microsurgeons as a determinant of academic output. METHODS: Faculty demographics and institution characteristics were obtained from the American Society of Reconstructive Microsurgery (ASRM) and official program websites...
December 26, 2016: Microsurgery
https://www.readbyqxmd.com/read/28017757/is-fractionated-gamma-knife-radiosurgery-a-safe-and-effective-treatment-approach-for-large-volume-10-cm-3-intracranial-meningiomas
#13
Moon-Soo Han, Woo-Youl Jang, Kyung-Sub Moon, Sa-Hoe Lim, In-Young Kim, Tae-Young Jung, Shin Jung
BACKGROUND: Even with great advances in surgery and improved clinical outcome, morbidity and mortality are still high for large volume intracranial meningiomas (MNGs). Recently, gamma knife radiosurgery (GKS) has proven to be a safe and effective treatment for many patients with intracranial MNGs. However, single session GKS may increase the risk of radiation-induced toxicity for large MNGs. Recently, fractionated gamma knife radiosurgery (FGKS) has been performed for an increasing number of patients with surgically high-risk and large intracranial tumors...
December 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28012127/fluorescein-sodium-guided-resection-of-cerebral-metastases-an-update
#14
Julius Höhne, Christoph Hohenberger, Martin Proescholdt, Markus J Riemenschneider, Christina Wendl, Alexander Brawanski, Karl-Michael Schebesch
BACKGROUND: Cerebral metastasis (CM) is the most common malignancy affecting the brain. In patients eligible for surgery, complete tumor removal is the most important predictor of overall survival and neurological outcome. The emergence of surgical microscopes fitted with a fluorescein-specific filter have facilitated fluorescein-guided microsurgery and identification of tumor tissue. In 2012, we started evaluating fluorescein (FL) with the dedicated microscope filter in cerebral metastases (CM)...
February 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28011978/what-is-the-best-tool-for-transanal-endoscopic-microsurgery-tem-a-case-matched-study-in-74-patients-comparing-a-standard-platform-and-a-disposable-material
#15
Diane Mege, Valérie Bridoux, Léon Maggiori, Jean-Jacques Tuech, Yves Panis
PURPOSE: Transanal endoscopic microsurgery (TEM) is the gold standard for local excision of rectal lesions, but no study exists concerning the best material. The objective was to compare TEM using a disposable material vs a standard platform through a case-matched study. METHODS: Patients who underwent TEM for rectal neoplasms were identified from prospective databases in two tertiary referral centers and matched according to four criteria (sex, tumor location, size, distance from the anal verge): TEM using a disposable material (GelPoint Applied®; group A) and TEM using a standard TEO® platform (Karl Storz, Tuttlingen, Germany; group B)...
December 24, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28009228/microsurgery-for-spetzler-ponce-class-a-and-b-arteriovenous-malformations-utilizing-an-outcome-score-adopted-from-gamma-knife-radiosurgery-a-prospective-cohort-study
#16
Michael K Morgan, Markus K Hermann Wiedmann, Marcus A Stoodley, Gillian Z Heller
OBJECTIVE The purpose of this study was to adapt and apply the extended definition of favorable outcome established for Gamma Knife radiosurgery (GKRS) to surgery for brain arteriovenous malformations (bAVMs). The aim was to derive both an error around the point estimate and a model incorporating angioarchitectural features in order to facilitate comparison among different treatments. METHODS A prospective microsurgical cohort was analyzed. This cohort included patients undergoing embolization who did not proceed to microsurgery and patients denied surgery because of perceived risk of treatment...
December 23, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28005877/dual-optical-coherence-tomography-sensor-guided-two-motor-horizontal-smart-micro-scissors
#17
Chaebeom Yeo, Hyun-Cheol Park, Seonjin Jang, Peter L Gehlbach, Cheol Song
In microsurgery, the physiological hand tremor of the surgeon remains an important factor affecting procedure efficiency, risk of complications, and ultimately, the efficacy of treatment. The micro-scissors are routinely employed to perform precise sharp dissection of delicate tissues. Here, we present a dual optical coherence tomography (OCT) distance sensor guided, two-motor, horizontal smart micromanipulation aided robotic-surgery tool (SMART) micro-scissors. It is intended to improve surgeon performance by retaining all of the attributes of the horizontal scissors while implementing proof-of-concept use of two functional motors to provide tremor cancellation...
October 15, 2016: Optics Letters
https://www.readbyqxmd.com/read/28005846/non-invasive-image-guided-laser-microsurgery-by-a-dual-wavelength-fiber-laser-and-an-integrated-fiber-optic-multi-modal-system
#18
Meng-Tsan Tsai, Dean-Ru Li, Ming-Che Chan
A new approach to non-invasive image-guided laser micro-treatment is demonstrated by a dual-wavelength fiber laser source and an integrated fiber-based multi-modal system. The fiber-based source, operated in 1.55 and 1.2 μm simultaneously, was directly connected to an integrated fiber-based multi-modal system for imaging and laser micro-treatment at the same time. The 1.2 μm radiations, within the 1.2-1.35 μm bio-penetration window of skin, were utilized for spectral domain optical coherence tomography imaging...
October 15, 2016: Optics Letters
https://www.readbyqxmd.com/read/28005818/multimodal-neuronavigation-in-microsurgery-resection-of-brainstem-tumors
#19
Fang Zhang, WenMing Hong, Yan Guo, QianYing Guo, XiaoPeng Hu
BACKGROUND: Microsurgery is a common treatment of brainstem tumors. However, misdirection, vascular damage, nerves injuries, paralysis, even death are all well-known complications, and the risk of adverse events is more likely in less experienced operators. This study was aimed to validate the accuracy of multimodal neuronavigation during microsurgery resection of brainstem tumors. METHODS: Ten patients with brainstem tumors underwent preoperative MRI, diffusion tensor imaging, computed tomography, three-dimensional print, and images loaded into the neuronavigation platform were used for its segmentation and preoperative planning...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005816/microsurgical-replantation-of-two-consecutive-traumatic-total-scalp-avulsions
#20
Murat Livaoğlu, Muhammet Uraloglu, Yasemin Imamoğlu, Ersin M Ömür Altun, Naci Karaçal
Total scalp avulsion is a rare but severe injury frequently ending in hair loss, and one that can even be life-threatening. It frequently occurs in women and in men with long hair and as a result of injuries by industrial or agricultural equipment or of animal attacks. The first option in treatment is replantation of hairy skin with microsurgery.The authors report 2 consecutive patients with total scalp avulsion presenting to our clinic. Similar injury mechanisms and total scalp avulsions were present in both patients...
November 2016: Journal of Craniofacial Surgery
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