oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 8 )

2018 ( 46 )

2017 ( 58 )

2016 ( 40 )

Custom range...

Search Results: 1 - 10 of 2407 matches for " Sciatic nerve "
All listed articles are free for downloading (OA Articles)
Page 1 /2407
Display every page Item
Reducing the Dose of Local Anesthetic Reduces the Duration of Analgesia—Myth or Reality: A Double-Blind Randomized Study  [PDF]
Piacherski Valery, Marachkou Aliaksei
Open Journal of Anesthesiology (OJAnes) , 2015, DOI: 10.4236/ojanes.2015.51002
Abstract: Background: The aim of the study is to determine the effect of a reduction in dose of local anesthetic blockade on the development of the sciatic nerve. Methods: Forty blocks of sciatic nerve were used in a double-blind randomized research, under ultrasonic guidance, using an electric stimulator with the peripheral nerves. Forty patients were divided into 2 equal groups. In the first group, a sciatic nerve block was performed with 5 ml of 0.75% ropivacaine solution (37.5 mg); in the second group, 10 ml of 0.75% ropivacaine solution (75 mg) was used. The assessment of the time required for developing sensory and motor blocks was carried out from the beginning of local anesthetic solution injection in the fascial sheath of the sciatic nerve. Results: Demographic data of patients were identical in the two sample groups. The time required for achieving a complete sensory block in groups treated with 5 and 10 ml ropivacaine was 45 (40; 48) and 30 (28; 30) min, respectively, (р < 0.01). There was no difference in analgesic duration in the postoperative period among groups at p > 0.05. Conclusions: Complete blockade of the sciatic nerve is developed using 5 ml of 0.75% ropivacaine. Reducing the dose of ropivacaine prolongs the latent period of the LA during the blockade of the sciatic nerve. Time of postoperative analgesia was not significantly changed.
Low-Grade Fibromyxoid Sarcoma in the Left Gluteal Region Presenting as Sciatic Nerve Pain  [PDF]
Kazuhiko Hashimoto, Kensuke Toriumi, Yukiko Hara, Shunki Iemura, Shunji Nishimura, Masao Akagi
Open Journal of Orthopedics (OJO) , 2018, DOI: 10.4236/ojo.2018.84019
Abstract: Low-grade fibromyxoid sarcoma is a slowly growing soft tissue neoplasm, mostly affecting young individuals. It usually arises in a deep soft tissue of the lower limbs and trunk, but few cases of low-grade fibromyxoid sarcoma that presents sciatic nerve pain have been reported. We report a 34-year-old woman with a low-grade fibromyxoid sarcoma originating in the left gluteal region that initially presented as sciatic nerve pain; she had experienced this type of pain for 5 years before visiting our hospital. Magnetic resonance imaging revealed a tumor in the left gluteal region. After needle biopsy revealed it to be a low-grade fibromyxoid sarcoma, we performed the wide resection. Intra-operative findings revealed no tumor invasion into the sciatic nerve. No recurrence or metastasis has been detected 6 months post-surgery. Oncologists who encounter patients with sciatic nerve pain should consider the possibility of less common causes such as the low-grade fibromyxoid sarcoma found in our patient.
Uma nova pin?a regulável para a produ??o de les?es por esmagamento do nervo ciático do rato
Monte-Raso, Vanessa Vilela;Moro, Carlos Alberto;Mazzer, Nilton;Fonseca, Marisa de Cássia Registro;Fazan, Valéria de Paula Sassoli;Barbieri, Giuliano;Barbieri, Cláudio Henrique;
Acta Ortopédica Brasileira , 2009, DOI: 10.1590/S1413-78522009000400009
Abstract: objective: a new adjustable pinch has been developed for producing a crush injury, with a previously known load of 5 kg, on a 5 mm-long segment of the nerve. methods: stainless steel was the material selected for building the pinch due its durability and possibility of sterilization with anti-septic substances, which are often corrosive. the crushing load of the pinch is adjustable by increasing or decreasing the tension of the spring by means of a screw used for calibration, which is performed by a load cell. result: this pinch has been used in a few experimental investigations and was shown to be as efficient as both the universal testing machine and the dead weight machine, previously used. conclusion: the developed pinch has the advantages of being portable and user-friendly. in addition, the pinch is cheap and allows for the standardization of the applied load.
Topographical anatomy features of branching of nerves of lower extremities of rat
Tsarev A.A.
Морфолог?я , 2008,
Abstract: 12 white rats of the reproductive period were the material for research. The topography of sciatic and femoral nerves of lower extremities of rats were studied by the method of level-by-level preparation. Femoral and sciatic nerves, their branches are ventral branches lumbar and sacral plexuses. Sciatic nerve was characterized by dispersed type of ramifying (78 % of cases), for the femoral nerve – the main type of branching (86%). The femoral nerve is projected on a medial surface of a hip and in the region of knee joint lies superficially that has a practical value. The rest portion of femoral nerve is located in hard-to-reach areas in the view of preparation and experimental approach. The sciatic nerve is projected on the skin of dorsal surfaces of pelvic areas where it leaves sciatic notch. For more reliable results of experimental research we propose to took into account age, sex, and topographical features.
Correla??o entre diferentes métodos de avalia??o funcional da marcha de ratos com les?o por esmagamento do nervo isquiático
Gasparini, Andréa Licre Pessina;Barbieri, Cláudio Henrique;Mazzer, Nilton;
Acta Ortopédica Brasileira , 2007, DOI: 10.1590/S1413-78522007000500011
Abstract: a study of the correlation between different methods of functional evaluation of the sciatic nerve of rats after a crushing injury was carried out. twenty five wistar rats weighing 250 g in average were submitted to a controlled crushing injury of the nerve and evaluated by two conventional methods for obtaining the sciatic functional index (sfi), based on manual and computer-based measurement of parameters on animals' footprints, and by a new method developed by the authors, based on walking track movie recording and the measurement of the same parameters, on the 1st, 7th, 14th and 21st postoperative days, a comparison being established with the values obtained preoperatively and between the different methods in all periods. the results showed that the method of recording the walking track allows for a better visualization of the injured paw and that this method positively correlates with the conventional methods, as early as the first postoperative week on, provided that the same sfi formula is used.
The Effects of Root Aquatic Extract of Salvia staminea on Neuronal Density of Alpha Motoneurons in Spinal Cord Anterior Horn after Sciatic Nerve Compression in Rats
M. Tehranipour,T. Ghadamyari
Journal of Biological Sciences , 2010,
Abstract: The aim of this study is carried out to examine the neuroprotective effects of root aquatic extract of Salvia staminea on neuronal density of motoneuron in spinal cord anterior horn in rats. Forty adult male Wistar rats were used and divided to five groups (control, compression, three experimental groups). In compression and experimental groups right sciatic nerve were highly compressed for 60 sec, assigned to experimental groups (Compression + aquatic extract of Salvia root injections (25, 50, 75 mg kg-1, i.p., 4 time) (N = 8). After 4 weeks post-operative the lumbar segments of spinal cord were sampled, processed, sectioned serially and stained with toluidine blue (pH 4.65). By using stereological quantitative technique, the number of alpha motoneurons in the right horn of spinal cord were counted and compared with each other. Statistical analysis showed remarkable increase in the number of alpha motoneurons in the groups with dosage (50, 75 mg kg-1) in compared to compression. Result shows that root aquatic extract could increase neuronal density motoneuron in anterior horn of spinal cord after sciatic nerve injury in rat.
Ultrasound Imaging of the Sciatic Nerve Division in the Popliteal Fossa: A Volunteer Study  [PDF]
Eric P. Chiang,Paul Dangerfield,Daniel Asay,Anita Cucchiaro
Open Journal of Anesthesiology (OJAnes) , 2013, DOI: 10.4236/ojanes.2013.35063
Abstract: The Background and Objectives: A sciatic nerve block at the level of the popliteal fossa is frequently administered for post-operative analgesia for surgery below the knee. While ultrasound continues to gain popularity as the technique of choice for guiding needle positioning during peripheral nerve blocks, practitioners can begin to utilize ultrasound to look for patterns of anatomical significance. Recognizing anatomical variations among different demographic populations can help practitioners improve in performing nerve blocks. We aim to determine if predictable variability exists in sciatic nerve bifurcation location and depth at the level of the popliteal fossa. Methods: After IRB approval, eligible subjects were screened for ASA I or II status and demographic data was collected. Fifty subjects were enrolled. The SonoSite MicroMaxx with 38-mm broadband linear array, 13-6 MHz probe with color Doppler and image capturing capabilities was used for ultrasound measurements. With subject lying prone, the location of the sciatic nerve in relation to the popliteal crease and skin-to-nerve distance were assessed via ultrasound. Two independent investigators confirmed nerve location for measurements. Analyses were performed with SAS version 9.1 using Pearson Correlation Coefficients and regression analysis. Results: Gender stratification revealed that, while males were both taller and heavier, skin-nerve measurements for depth were consistently deeper in females (p-value 0.02). Independent of the right or left leg, male gender and increased height decreases the skin-nerve distance, while increased weight increases the distance. There was no correlation between patient characteristics and crease-nerve distance. In some subjects, variability of crease-nerve distance even existed between their right and left leg. Conclusion: We show that significant variability exists for actual sciatic nerve bifurcation location, or target injection site, with consistently deeper skin depth values for female patients when compared to male patients, accounting for height and weight. These findings suggest visualization techniques such as ultrasound may lead to better localization of ideal injection sites.
Ultrasound Imaging of the Sciatic Nerve Division in the Popliteal Fossa: A Volunteer Study  [PDF]
Eric P. Chiang, Paul Dangerfield, Daniel Asay, Anita Cucchiaro, Jeffrey S. Berger
Open Journal of Anesthesiology (OJAnes) , 2013, DOI: 10.4236/ojanes.2013.35063
Abstract: The Background and Objectives: A sciatic nerve block at the level of the popliteal fossa is frequently administered for post-operative analgesia for surgery below the knee. While ultrasound continues to gain popularity as the technique of choice for guiding needle positioning during peripheral nerve blocks, practitioners can begin to utilize ultrasound to look for patterns of anatomical significance. Recognizing anatomical variations among different demographic populations can help practitioners improve in performing nerve blocks. We aim to determine if predictable variability exists in sciatic nerve bifurcation location and depth at the level of the popliteal fossa. Methods: After IRB approval, eligible subjects were screened for ASA I or II status and demographic data was collected. Fifty subjects were enrolled. The SonoSite MicroMaxx? with 38-mm broadband linear array, 13-6 MHz probe with color Doppler and image capturing capabilities was used for ultrasound measurements. With subject lying prone, the location of the sciatic nerve in relation to the popliteal crease and skin-to-nerve distance were assessed via ultrasound. Two independent investigators confirmed nerve location for measurements. Analyses were performed with SAS version 9.1 using Pearson Correlation Coefficients and regression analysis. Results: Gender stratification revealed that, while males were both taller and heavier, skin-nerve measurements for depth were consistently deeper in females (p-value 0.02). Independent of the right or left leg, male gender and increased height decreases the skin-nerve distance, while increased weight increases the distance. There was no correlation between patient characteristics and crease-nerve distance. In some subjects, variability of crease-nerve distance even existed between their right and left leg. Conclusion: We show that significant variability exists for actual sciatic nerve bifurcation location, or target injection site, with consistently deeper skin depth values for female patients when compared to male patients, accounting for height and weight. These findings suggest visualization techniques such as ultrasound may lead to better localization of ideal injection sites.
Combined Sciatic, Femoral, and Obturator Nerve Blocks for Ankle Surgery in a Patient with Severe Pulmonary Hypertension—A Case Report  [PDF]
Ju Hyun Lee, Hyun Su Shin, Ki Yoon Kim, Ji Seon Jeong, Justin Sangwook Ko
Open Journal of Anesthesiology (OJAnes) , 2017, DOI: 10.4236/ojanes.2017.78022
Abstract: We report a patient with severe pulmonary arterial hypertension (PAH) undergoing tibio-talo-calcaneal fusion due to Charcot joint. Despite the advancement in the management of PAH, the risks of anesthesia, surgery, and postoperative morbidity and mortality still remain high. A 46-year-old female was presented with severe PAH and end stage renal disease requiring hemodialysis three times a week. Ultrasound-guided sciatic, femoral, and obturator nerve blocks were performed with 0.5% levobupivacaine 15 ml, 10 ml, and 5 ml, respectively. All the blocks were successful, and the patient underwent uneventful anesthesia and surgery. In addition, the postoperative pain control lasted for 15 h and the patient was discharged on POD 5 without any complications. Therefore, ultrasound-guided sciatic, femoral, and obturator nerve blocks are valuable alternative to the general or neuraxial anesthesia in patients with severe pulmonary hypertension.
Sciatic Nerve Block with Ropivacaine and Prilocaine in a Patient with Chronic Progressive External Ophthalmoplegia (CPEO)  [PDF]
Heiko Baumann, Eduard Schlegel, Fabian Wagner, Jürgen Biscoping
Open Journal of Anesthesiology (OJAnes) , 2012, DOI: 10.4236/ojanes.2012.24027
Abstract: The anesthetic implications of caring for patients with mitochondrial myopathies (MM) are not well defined, and the few case reports that have been published are contradictory. Local anesthetics particularly have the potential to worsen neuromuscular manifestations via direct effects on mitochondrial bioenergetics. Here we describe the anesthetic management of a patient with chronic progressive external ophthalmoplegia (CPEO) in which a sciatic nerve block with ropivacaine and prilocaine was performed and review the available related literature.
Page 1 /2407
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.