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https://www.readbyqxmd.com/read/29678419/finite-element-analysis-for-transverse-carpal-ligament-tensile-strain-and-carpal-arch-area
#1
Yifei Yao, Ahmet Erdemir, Zong-Ming Li
Mechanics of carpal tunnel soft tissue, such as fat, muscle and transverse carpal ligament (TCL), around the median nerve may render the median nerve vulnerable to compression neuropathy. The purpose of this study was to understand the roles of carpal tunnel soft tissue mechanical properties and intratunnel pressure on the TCL tensile strain and carpal arch area (CAA) using finite element analysis (FEA). Manual segmentation of the thenar muscles, skin, fat, TCL, hamate bone, and trapezium bone in the transverse plane at distal carpal tunnel were obtained from B-mode ultrasound images of one cadaveric hand...
April 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29678392/skeletal-status-in-women-with-carpal-tunnel-syndrome-a-1-yr-prospective-study
#2
Aleksander Kisała, Wojciech Pluskiewicz, Piotr Adamczyk
Functional deterioration due to carpal tunnel syndrome (CTS) may influence the bone status of the forearm and hand. The aim of this prospective study was to establish whether CTS has an impact on bone status at distal parts of the upper limb and to monitor the longitudinal changes of that status during a 1-yr follow-up after surgical treatment. Fifteen women with CTS at mean age of 55.13 ± 9.3 yr, mean weight of 79.18 ± 20.37 kg, and mean height of 157.8 ± 6.17 cm were enrolled into the study...
March 27, 2018: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29677030/a-cadaveric-study-of-ultrasound-guided-maxillary-nerve-block-via-the-pterygopalatine-fossa-a-novel-technique-using-the-lateral-pterygoid-plate-approach
#3
Wirinaree Kampitak, Tanvaa Tansatit, Yasuyuki Shibata
BACKGROUND AND OBJECTIVES: This study aimed to describe and assess the accuracy and feasibility of a novel technique for ultrasound-guided maxillary nerve block using the lateral pterygoid plate (LPP) approach via the pterygopalatine fossa (PPF) in a soft cadaveric model. METHODS: Ten soft cadavers were studied. The curved array ultrasound transducer probe was applied over 1 side of the face of the cadavers in the open-mouth posture. It was placed transversely below the zygomatic arch for identifying the border of the maxillary tuberosity and the LPP...
April 19, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29675966/unilateral-cervical-plexus-block-for-prosthetic-laryngoplasty-in-the-standing-horse
#4
L Campoy, T Morris, N Ducharme, R Gleed, M Martin-Flores
BACKGROUND: Locoregional anaesthetic techniques can facilitate certain surgeries being performed under standing procedural sedation. The second and third spinal cervical nerves (C2, C3) are part of the cervical plexus and provide sensory innervation to the peri-laryngeal structures in people; block of these nerves might permit laryngeal lateralisation surgery in horses. OBJECTIVES: To describe the anatomical basis for an ultrasound-guided cervical plexus block in horses...
April 20, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29674264/ultrasonic-modulation-of-neural-circuit-activity
#5
REVIEW
William J Tyler, Shane W Lani, Grace M Hwang
Ultrasound (US) is recognized for its use in medical imaging as a diagnostic tool. As an acoustic energy source, US has become increasingly appreciated over the past decade for its ability to non-invasively modulate cellular activity including neuronal activity. Data obtained from a host of experimental models has shown that low-intensity US can reversibly modulate the physiological activity of neurons in peripheral nerves, spinal cord, and intact brain circuits. Experimental evidence indicates that acoustic pressures exerted by US act, in part, on mechanosensitive ion channels to modulate activity...
April 16, 2018: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29674004/an-unusual-finding-of-schwannoma-in-the-columellar-area-a-case-report
#6
Sarah Bouayyad, Jen H Ong, Matthew Peter Ellis, Philip Sloan
INTRODUCTION: Schwannomas are benign tumours of the nerve sheath that originate from Schwann cells. Less than 4% of these tumours arise in the sinonasal tract. Columellar involvement is extremely rare - three other cases involving the columella have been reported since 1967. PRESENTATION OF CASE: A 25-year-old woman presented with a swelling of the nasal columella from eight months into pregnancy. She presented with right nasal obstruction and discomfort over the nasal bridge...
February 10, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29673104/omega-3-polyunsaturated-fatty-acid-supplementation-reduces-blood-pressure-but-not-renal-vasoconstrictor-response-to-orthostatic-stress-in-healthy-older-adults
#7
Christine M Clark, Kevin D Monahan, Rachel C Drew
Older adults exhibit augmented renal vasoconstriction during orthostatic stress compared to young adults. Consumption of omega-3 polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) found in fish oil (FO), modulates autonomic nerve activity. However, the effect of omega-3 polyunsaturated fatty acid consumption on the renal vasoconstrictor response to orthostatic stress in young and older adults is unknown. Therefore, 10 young (25 ± 1 years; mean ± SEM) and 10 older (66 ± 2 years) healthy adults ingested 4 g FO daily for 12 weeks, and underwent graded lower body negative pressure (LBNP; -15 and -30 mmHg) pre- and post-FO supplementation...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29672368/pectoral-i-block-does-not-improve-postoperative-analgesia-after-breast-cancer-surgery-a-randomized-double-blind-dual-centered-controlled-trial
#8
Jérôme Cros, Patrick Sengès, Suzan Kaprelian, Julie Desroches, Caroline Gagnon, Anaïs Labrunie, Benoît Marin, Sabrina Crépin, Nathalie Nathan, Pierre Beaulieu
BACKGROUND AND OBJECTIVES: General anesthesia for breast surgery may be supplemented by using a regional anesthetic technique. We evaluated the efficacy of the first pectoral nerve block (Pecs I) in treating postoperative pain after breast cancer surgery. METHODS: A randomized, double-blind, dual-centered, placebo-controlled trial was performed. One hundred twenty-eight patients scheduled for unilateral breast cancer surgery were recruited. A multimodal analgesic regimen and surgeon-administered local anesthetic infiltration were used for all patients...
April 18, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29670817/dejerine-sottas-disease-in-childhood-genetic-and-sonographic-heterogeneity
#9
Sanne M R Hobbelink, Cain R Brockley, Rachel A Kennedy, Kate Carroll, Katy de Valle, Padma Rao, Mark R Davis, Nigel G Laing, Nicol C Voermans, Monique M Ryan, Eppie M Yiu
Introduction: The nerve sonographic features of Dejerine-Sottas disease (DSD) have not previously been described. Methods: This exploratory cross-sectional, matched, case-control study investigated differences in nerve cross-sectional area (CSA) in children with DSD compared to healthy controls and children with Charcot-Marie-Tooth disease type 1A (CMT1A). CSA of the median, ulnar, tibial, and sural nerves was measured by peripheral nerve ultrasound. The mean difference in CSA between children with DSD, controls, and CMT1A was determined individually and within each group...
April 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29668467/the-effect-of-rectus-sheath-block-as-a-supplement-of-general-anesthesia-on-postoperative-analgesia-in-adult-patient-undergoing-umbilical-hernia-repair
#10
Andrijan Kartalov, Nikola Jankulovski, Biljana Kuzmanovska, Milka Zdravkovska, Mirjana Shosholcheva, Marija Tolevska, Filip Naumovski, Marija Srceva, Aleksandra Panovska Petrusheva, Rexhep Selmani, Atanas Sivevski
BACKGROUND: Ultrasound guided rectus sheath block can block the ventral rami of the 7th to 12th thoracolumbar nerves by injection of local anesthetic into the space between the rectus muscle and posterior rectus sheath. The aim of this randomized double-blind study was to evaluate the analgesic effect of the bilateral ultrasound guided rectus sheath block as supplement of general anesthesia on patents undergoing elective umbilical hernia repair. METHODS: After the hospital ethics committee approval, 60 (ASA I-II) adult patients scheduled for umbilical hernia repair were included in this study...
December 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/29664414/enhanced-total-neurite-outgrowth-and-secondary-branching-in-dorsal-root-ganglion-neurons-elicited-by-low-intensity-pulsed-ultrasound
#11
Daniel Michael Ventre, Marissa Puzan, Emily Ashbolt, Abigail Koppes
OBJECTIVE: Despite the prevalence of peripheral nerve injuries (PNI), challenges remain in restoring full functionality to those afflicted. For recovery to occur, axons must extend across the injury site to connect with distal targets, where injury gap size is a critical factor in the probability of restoration of function. Current clinical therapies often achieve limited neural regeneration, motivating the development of new therapeutic interventions such as biophysical stimulation. APPROACH: To investigate the potential for low intensity, pulsed ultrasonic simulation (LIPUS) to impact peripheral nerve regeneration, primary neonatal rat dorsal root ganglion neurons were examined in vitro in response to ultrasound (US)...
April 17, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29664158/spread-of-injectate-around-hip-articular-sensory-branches-of-the-femoral-nerve-in-cadavers
#12
N D Nielsen, M Greher, B Moriggl, R Hoermann, T D Nielsen, J Børglum, T F Bendtsen
BACKGROUND: Anatomical knowledge dictates that regional anaesthesia after total hip arthroplasty requires blockade of the hip articular branches of the femoral and obturator nerves. A direct femoral nerve block increases the risk of fall and impedes mobilisation. We propose a selective nerve block of the hip articular branches of the femoral nerve by an ultrasound-guided injection in the plane between the iliopsoas muscle and the iliofemoral ligament (the iliopsoas plane). The aim of this study was to assess whether dye injected in the iliopsoas plane spreads to all hip articular branches of the femoral nerve...
April 17, 2018: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29664051/predictive-value-of-cranial-ultrasound-for-neurodevelopmental-outcomes-of-very-preterm-infants-with-brain-injury
#13
Xue-Hua Zhang, Shi-Jun Qiu, Wen-Juan Chen, Xi-Rong Gao, Ya Li, Jing Cao, Jing-Jing Zhang
Background: Compared with full-term infants, very preterm infants are more vulnerable to injury and long-term disability and are at high risk of death. The predictive value of ultrasound and imaging on the neurodevelopment is one of the hot topics. This study aimed to investigate the relationship between cranial ultrasound (cUS) variables and neurodevelopmental outcomes of very preterm infants. Methods: Totally 129 very preterm infants (gestational age ≤28 weeks) in neonatal intensive care unit of Hunan Children's Hospital between January 2012 and November 2014 were included in this retrospective study...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29663478/superb-microvascular-imaging-of-the-median-nerve-in-carpal-tunnel-syndrome-an-electrodiagnostic-and-ultrasonographic-study
#14
Ali Yavuz Karahan, Serdar Arslan, Banu Ordahan, Suleyman Bakdik, Timur Ekiz
OBJECTIVE: To evaluate intraneural blood flow of the median nerve using superb microvascular imaging (SMI) and power Doppler ultrasonography (PDUS), and to examine their correlation with electroneuromyography in patients with carpal tunnel syndrome (CTS). METHODS: A cross-sectional survey was used, and the study was conducted in the research unit of a training and research hospital. Patients diagnosed with CTS according to electroneuromyography studies were included in the study...
April 16, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29659438/selective-suprascapular-and-axillary-nerve-block-versus-interscalene-plexus-block-for-pain-control-after-arthroscopic-shoulder-surgery-a-noninferiority-randomized-parallel-controlled-clinical-trial
#15
Anneleen Neuts, Björn Stessel, Patrick F Wouters, Carl Dierickx, Wilfried Cools, Jean-Paul Ory, Jasperina Dubois, Luc Jamaer, Ingrid Arijs, Dirk Schoorens
BACKGROUND AND OBJECTIVES: This randomized trial aimed to assess if a combined suprascapular-axillary nerve block (SSB) is noninferior (margin = 1.3 on a 0- to 10-point scale) to interscalene block (ISB) in treating pain after arthroscopic shoulder surgery. Secondary end points included opioid consumption, dyspnea, discomfort associated with muscle weakness, and patient satisfaction. METHODS: One hundred patients undergoing arthroscopic shoulder surgery were randomized to receive ultrasound-guided ISB (n = 50) or SSB (n = 50)...
April 14, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29659436/a-novel-technique-of-ultrasound-guided-selective-mandibular-nerve-block-with-a-lateral-pterygoid-plate-approach-a-cadaveric-study
#16
Wirinaree Kampitak, Tanvaa Tansatit, Yasuyuki Shibata
BACKGROUND AND OBJECTIVES: We aimed to describe a novel technique of ultrasound-guided selective mandibular nerve block with a lateral pterygoid plate (LPP) approach and to assess its feasibility and accuracy in a soft cadaver model. METHODS: Ten soft cadavers were studied. A curved array ultrasound transducer was applied over 1 side of the face of the cadaver, in an open-mouth position. The transducer was placed transversely below the zygomatic arch and tilted in the caudal-to-cranial direction to identify the boundary of the LPP...
April 14, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29655645/proton-beam-irradiation-a-safe-procedure-in-post-equatorial-extraocular-extension-from-uveal-melanoma
#17
Ira Seibel, Aline I Riechardt, Katharina Erb-Eigner, Alexander Böker, Dino Cordini, Jens Heufelder, Antonia M Joussen
PURPOSE: This study was performed to show long-term outcomes concerning metastasis rates and local recurrence rates after primary proton beam therapy in uveal melanoma with posterior extraocular extension (EOE) with the main focus on optic nerve invasion. DESIGN: Retrospective case series METHODS: All patients treated with primary proton beam therapy for choroidal or ciliary body melanoma with posterior EOE between July 1998 and August 2010 were included. EOE was either detected upon sonography at primary examination or during the surgical application of tantalum clips onto the sclera...
April 12, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29652687/ultrasound-guided-transversalis-fascia-plane-block-an-alternative-approach-for-anesthesia-in-inguinal-herniorrhaphy-a-case-report
#18
Paolo Scimia, Erika Basso Ricci, Emiliano Petrucci, Astrid Ursula Behr, Franco Marinangeli, Pierfrancesco Fusco
Ultrasound (US)-guided transversalis fascia plane block (TFPB) was first described by Hebbard as a technique for blockade of T12-L1 nerves. Although this technique appears similar to the quadratus lumborum 1 block, the point of injection is more caudal and anterior, specifically targeting ilioinguinal and iliohypogastric nerves. There are only few published data on US-guided TFPB demonstrating effective postoperative analgesia in iliac crest bone graft harvesting. We report the use of US-guided TFPB in a patient undergoing inguinal herniorrhaphy...
April 15, 2018: A&A practice
https://www.readbyqxmd.com/read/29643786/association-of-optic-nerve-head-drusen-with-best-vitelliform-macular-dystrophy-a-case-series
#19
Robert J White, Daniel J Watson, Dara D Koozekanani, Sandra R Montezuma
Purpose: To report the association of optic nerve head (ONH) drusen with Best vitelliform macular dystrophy (BVMD). Methods: Chart review. Patients: Five patients from 3 families. Results: Multimodal imaging and ophthalmic examination demonstrated findings consistent with ONH drusen, in association with BVMD, in 5 patients. Conclusion: We report the association of BVMD with ONH drusen in 5 patients...
January 2018: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/29643620/opioid-free-anesthesia-for-breast-cancer-surgery-an-observational-study
#20
Swagata Tripathy, Satyajit Rath, Suresh Agrawal, P Bhaskar Rao, A Panda, T S Mishra, Sukdev Nayak
Background and Aims: Opioids are associated with postoperative nausea, vomiting, drowsiness, and increased analgesic requirement. A nonopioid anesthesia technique may reduce morbidity, enable day care surgery, and possibly decrease tumor recurrence. We compared opioid-free, nerve block-based anesthesia with opioid-based general anesthesia for breast cancer surgery in a prospective cohort study. Material and Methods: Twenty four adult American Society of Anesthesiologists grade I-III patients posted for modified radical mastectomy (MRM) with axillary dissection were induced with propofol and maintained on isoflurane (0...
January 2018: Journal of Anaesthesiology, Clinical Pharmacology
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