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Peripheral Nerve Ultrasonography

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https://www.readbyqxmd.com/read/28532415/hemodynamic-changes-caused-by-acupuncture-in-healthy-volunteers-a-prospective-single-arm-exploratory-clinical-study
#1
Tae-Hun Kim, Boncho Ku, Jang-Han Bae, Jae-Young Shin, Min-Ho Jun, Jung Won Kang, Junghwan Kim, Jun-Hwan Lee, Jaeuk U Kim
BACKGROUND: Radial pressure pulse wave (RPPW) examination has been a key diagnostic component of traditional Chinese medicine. The objective of this study was to investigate the changes in RPPW along with various hemodynamic variables after acupuncture stimulation and to examine the validity of pulse diagnosis as a modern diagnostic tool. METHODS: We conducted acupuncture stimulation at both ST36 acupuncture points in 25 healthy volunteers. We simultaneously assessed the RPPW by pulse tonometry; heart rate variability (HRV) by electrocardiogram; photoplethysmogram (PPG) signals, respiration rate, peripheral blood flow velocity and arterial depth by ultrasonography; and cardiac output by impedance cardiography, before, during and after a session of acupuncture stimulation...
May 22, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28522988/multiple-sites-ultrasonography-of-peripheral-nerves-in-differentiating-charcot-marie-tooth-type-1a-from-chronic-inflammatory-demyelinating-polyradiculoneuropathy
#2
Jingwen Niu, Liying Cui, Mingsheng Liu
INTRODUCTION: Multiple sites measurement of cross-sectional areas (CSA) by ultrasound was performed to differentiate Charcot-Marie-Tooth type 1A (CMT1A) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). METHODS: Nine patients with CMT1A, 28 patients with CIDP, and 14 healthy controls (HC) were recruited prospectively. Consecutive ultrasonography scanning was performed from wrist to axilla on median and ulnar nerves. CSAs were measured at 10 predetermined sites of each nerve...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28457533/schwannoma-of-the-breast-a-case-report
#3
P Solano Díaz, M T Hidalgo Martín, M F Sánchez Cordero, M C Soto Aguilar
Schwannomas are benign tumors of peripheral nerve sheaths. Schwannomas of the breast are very uncommon: only 28 cases have been reported. We present the case of a 63-year-old woman studied for a high family risk of breast cancer in whose left breast we detected a lesion with benign characteristics on magnetic resonance imaging (MRI) and later it was identified by ultrasonography and mammography. Histological study after core needle biopsy confirmed the benign nature of the lesion. The mammographic findings correlated with those reported in the literature...
April 27, 2017: Radiología
https://www.readbyqxmd.com/read/28408350/neuroactive-steroid-levels-and-psychiatric-and-andrological-features-in-post-finasteride-patients
#4
Roberto Cosimo Melcangi, Daniele Santi, Roberto Spezzano, Maria Grimoldi, Tommaso Tabacchi, Maria Letizia Fusco, Silvia Diviccaro, Silvia Giatti, Giuseppe Carrà, Donatella Caruso, Manuela Simoni, Guido Cavaletti
Recent reports show that, in patients treated with finasteride for male pattern hair loss, persistent side effects including sexual side effects, depression, anxiety and cognitive complaints may occur. We here explored the psychiatric and andrological features of patients affected by post-finasteride syndrome (PFS) and verified whether the cerebrospinal fluid (CSF) and plasma levels of neuroactive steroids (i.e., important regulators of nervous function) are modified. We found that eight out of sixteen PFS male patients considered suffered from a DSM-IV major depressive disorder (MDD)...
April 10, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28391751/isolated-aa-amyloidosis-of-the-radial-nerve
#5
Teresa Pérez-de la Fuente, Javier Fernández-Jara, Pilar Rodríguez-Urcelay, Jose Jiménez-Heffernan, Ángel Juárez
BACKGROUND: Amyloidosis affecting peripheral nerve is usually seen in primary amyloidosis. METHODS: We are reporting on the case of a 74-year-old man with a 16-month history of progressive left radial nerve paralysis. Perioperative imaging detected an enlarged radial nerve in the middle-distal part of the arm. The patient had an antecedent of amyloid deposits in the lung. RESULTS: A radial nerve amyloidosis was suspected and confirmed with a biopsy assisted by ultrasonography, resulting in a secondary amyloidosis form...
April 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28374060/possible-utility-of-contrast-enhanced-ultrasonography-for-detecting-spread-of-local-anesthetic-in-nerve-block
#6
Hideaki Sasaki, Masanori Yamauchi, Takafumi Ninomiya, Haruyuki Tatsumi, Michiaki Yamakage
PURPOSE: This study demonstrated the effects of perfluorobutane (Sonazoid(®)) with contrast-enhanced ultrasonography (CEUS) to identify the spread of local anesthetics in ultrasound-guided nerve block. METHODS: This study consists of simulation, cadaveric, and animal studies. In a simulation study, 1% lidocaine with 10- to 1000-fold diluted Sonazoid(®), a US-specific contrast agent to diagnose hepatic and breast cancers (0.5 mL), was injected into a resin-based phantom to determine the optimal concentration for ultrasound-guided peripheral nerve block...
April 3, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28341644/nerve-ultrasound-a-useful-screening-tool-for-peripheral-nerve-sheath-tumors-in-nf1
#7
Johan A Telleman, Menno D Stellingwerff, Geert J Brekelmans, Leo H Visser
OBJECTIVE: To determine ultrasonographic peripheral nerve involvement in patients with asymptomatic neurofibromatosis type 1 (NF1). METHODS: Thirteen asymptomatic and 4 minimally symptomatic patients with NF1 were included in this cross-sectional pilot study to detect asymptomatic abnormalities of the brachial plexus and upper and lower extremity nerves. Patients underwent clinical examination, nerve conduction studies (NCS), and high-resolution ultrasonography (HRUS)...
April 25, 2017: Neurology
https://www.readbyqxmd.com/read/28318780/surface-electromyogram-and-muscle-ultrasonography-for-detection-of-muscle-fasciculations-in-pediatric-peripheral-neuropathy
#8
Masayoshi Oguri, Yoshiaki Saito, Tetsuya Okazaki, Wataru Matsumura, Koyo Ohno, Masami Togawa, Chisako Fukuda, Yuko Saito, Ichizo Nishino, Yoshihiro Maegaki
A 12-year-old girl presented with talipes equinus of both legs, attenuation of upper and lower limb tendon reflexes, thermal hyperalgesia, and reduction of vibratory sensation. On clinical examination, muscle twitches of fingers of both hands, as well as the abductor halluces and the dorsal interossei muscles of the right foot were observed. Nerve conduction velocity was significantly declined in the upper and lower extremities. Needle electromyography (EMG) was not performed; however, ultrasonography revealed repetitive, semi-regular muscle twitches lasting 0...
March 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28303912/new-technologies-for-the-assessment-of-neuropathies
#9
REVIEW
Roberto Gasparotti, Luca Padua, Chiara Briani, Giuseppe Lauria
Technical advances are rapidly changing the clinical and instrumental approach to peripheral nerve diseases. Magnetic resonance neurography, diffusion tensor imaging and nerve ultrasonography are increasingly entering the diagnostic workup of peripheral neuropathies as tools that complement neurophysiology and enable investigation of proximal structures, such as plexuses and roots. Progress in the design of magnetic resonance scanners and sequences, and the development of high-frequency ultrasound probes mean that high-resolution peripheral nerve imaging is possible, enabling detailed examination of nerve size, morphology and internal fascicular structure that can integrate nerve conduction studies into clinical practice...
March 17, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28286771/effects-of-wrist-posture-and-fingertip-force-on-median-nerve-blood-flow-velocity
#10
Katherine E Wilson, Jimmy Tat, Peter J Keir
Purpose. The purpose of this study was to assess nerve hypervascularization using high resolution ultrasonography to determine the effects of wrist posture and fingertip force on median nerve blood flow at the wrist in healthy participants and those experiencing carpal tunnel syndrome (CTS) symptoms. Methods. The median nerves of nine healthy participants and nine participants experiencing symptoms of CTS were evaluated using optimized ultrasonography in five wrist postures with and without a middle digit fingertip press (0, 6 N)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28245667/novel-technique-for-trialing-peripheral-nerve-stimulation-ultrasonography-guided-stimucath-trial
#11
Chandan G Reddy, Oliver E Flouty, Marshall T Holland, Leigh A Rettenmaier, Mario Zanaty, Foad Elahi
OBJECTIVE Peripheral nerve stimulation (PNS) has been used for the treatment of neuropathic pain for many decades. Despite the specific indications for PNS, clinicians often have difficulty screening for candidates likely to have a good or fair outcome. Given the expense of a permanent implant, most insurance companies will not pay for the implant without a successful PNS trial. And since PNS has only recently been approved by the US Food and Drug Administration, many insurance companies will not pay for a conventional trial of PNS...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28235493/ultrasound-guided-transversus-abdominis-plane-block-for-postoperative-analgesia-in-living-liver-donors-a-prospective-randomized-double-blinded-clinical-trial
#12
Arzu Kıtlık, Mehmet Ali Erdogan, Ulku Ozgul, Mustafa Said Aydogan, Muharrem Ucar, Huseyin Ilksen Toprak, Cemil Colak, Mahmut Durmus
BACKGROUND: Transversus abdominis plane (TAP) block is a peripheral nerve block that reduces postoperative pain, nausea, vomiting and the need for postoperative opioids following various types of abdominal surgery. The primary aim of the present study was to evaluate the effects of TAP block on postoperative analgesia and opioid consumption in living liver donors in whom a right "J" abdominal incision was used. METHODS: This prospective, double-blinded, randomized controlled study was conducted with 50 living liver donors, aged 18-65years, who were scheduled to undergo right hepatectomy...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28226286/peripheral-nerve-ultrasonography-in-patients-with-transthyretin-amyloidosis
#13
Simon Podnar, Stayko Sarafov, Ivailo Tournev, Gregor Omejec, Janez Zidar
OBJECTIVE: To systematically study peripheral nerve morphology in patients with transthyretin (TTR) amyloidosis and TTR gene mutation carriers using high-resolution ultrasonography (US). METHODS: In this prospective cross-sectional study we took a structured history, performed neurological examination, and measured peripheral nerve cross-sectional areas (CSAs) bilaterally at 28 standard locations using US. Demographic and US findings were compared to controls. RESULTS: Peripheral nerve CSAs were significantly larger in 33 patients with familial amyloid polyneuropathy (FAP) compared to 50 controls, most dramatically at the common entrapment sites (median nerve at the wrist, ulnar nerve at the elbow), and in the proximal nerve segments (median nerve in the upper arm, sciatic nerve in the thigh)...
April 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28217060/ultrasonography-guided-pulsed-radiofrequency-of-sciatic-nerve-for-the-treatment-of-complex-regional-pain-syndrome-type-ii
#14
Yi Hwa Choi, Dong Jin Chang, Woon Suk Hwang, Jin Hwan Chung
Although the major mechanism of complex regional pain syndrome (CRPS) involves dysfunctional central or sympathetic nervous system activation, the peripheral nervous system also contributes significantly to its clinical manifestations. Pulsed radiofrequency (PRF) is a recently developed treatment option for neuropathic pain syndromes. Here, we report a case of CRPS Type II after a femur fracture and sciatic nerve injury, in which the pain was treated successfully with ultrasonography-guided selective sciatic nerve PRF application...
January 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28188346/-clinical-indications-for-high-resolution-mri-diagnostics-of-the-peripheral-nervous-system
#15
T Godel, M Weiler
CLINICAL/METHODICAL ISSUE: Peripheral neuropathies are common and diagnostically often challenging disorders. Difficulties particularly exist in lesion localization and recognition of complex spatial lesion patterns. STANDARD DIAGNOSTIC METHODS: Medical history taking, neurological examination, neurophysiological tests and nerve ultrasonography represent the gold standard in the diagnosis of peripheral nerve lesions but have known methodical limitations. METHODICAL INNOVATIONS: The use of 3 Tesla magnetic resonance neurography (MRN) is an additional diagnostic imaging tool recently developed for the high-resolution visualization of long segments of peripheral nerves...
February 10, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28188345/-diagnostic-nerve-ultrasonography
#16
T Bäumer, A Grimm, T Schelle
CLINICAL/METHODICAL ISSUE: For the diagnostics of nerve lesions an imaging method is necessary to visualize peripheral nerves and their surrounding structures for an etiological classification. STANDARD RADIOLOGICAL METHODS: Clinical neurological and electrophysiological investigations provide functional information about nerve lesions. The information provided by a standard magnetic resonance imaging (MRI) examination is inadequate for peripheral nerve diagnostics; however, MRI neurography is suitable but on the other hand a resource and time-consuming method...
February 10, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28175932/-nerve-injuries-and-traumatic-lesions-of-the-brachial-plexus-imaging-diagnostics-and-therapeutic-options
#17
D Schwarz, M T Pedro, C Brand, M Bendszus, G Antoniadis
CLINICAL/METHODICAL ISSUE: Traumatic lesions of peripheral nerves and the brachial plexus are feared complications because they frequently result in severe functional impairment. The prognosis is greatly dependent on the correct early diagnosis and the right choice of treatment regimen. It is important to distinguish between open and closed injuries. STANDARD RADIOLOGICAL METHODS: Initial imaging must critically evaluate or prove nerve continuity and is commonly achieved by high-resolution ultrasonography...
February 7, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28120090/radioguided-occult-lesion-localization-in-deep-schwannomas-of-the-peripheral-nerves-results-of-a-preliminary-case-series
#18
Giorgio Stevanato, Giovanni Monteleone, Donatella Sgubin, Michele Sicolo, Giulia Pastorello, Luca Vazzana, Franco Guida
BACKGROUND: The detection of small deep schwannomas of the peripheral nerves has been increasing since the the use of precise neuroimaging techniques has become more widespread; however, although nonpalpable lesions can be well defined by images, it is often difficult to identify them during the surgical procedure. The authors report seven cases of nonpalpable small deep schwannomas surgically treated after their identification using the radioguided occult lesion localization (ROLL) technique...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28119835/quantitative-muscle-ultrasonography-in-carpal-tunnel-syndrome
#19
Hyewon Lee, Sungju Jee, Soo Ho Park, Seung-Chan Ahn, Juneho Im, Min Kyun Sohn
OBJECTIVE: To assess the reliability of quantitative muscle ultrasonography (US) in healthy subjects and to evaluate the correlation between quantitative muscle US findings and electrodiagnostic study results in patients with carpal tunnel syndrome (CTS). The clinical significance of quantitative muscle US in CTS was also assessed. METHODS: Twenty patients with CTS and 20 age-matched healthy volunteers were recruited. All control and CTS subjects underwent a bilateral median and ulnar nerve conduction study (NCS) and quantitative muscle US...
December 2016: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28112008/measuring-disease-activity-and-clinical-response-during-maintenance-therapy-in-cidp-from-ice-trial-outcome-measures-to-future-clinical-biomarkers
#20
Hans D Katzberg, Norman Latov, Francis O Walker
Some patients with chronic inflammatory demyelinating polyradiculoneuropathy who respond to initial intravenous immunoglobulin require repeated courses over prolonged periods of time; however, evidence to guide dosage and interval of intravenous immunoglobulin during maintenance therapy is limited. Optimizing treatment requires assessment of underlying disease activity and clinical outcome. Electrophysiological measures of demyelination, and clinical measures using handgrip strength and walking velocity promise to be particularly informative...
January 23, 2017: Neurodegenerative Disease Management
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