The Experts below are selected from a list of 189 Experts worldwide ranked by ideXlab platform
Hannes Gruber - One of the best experts on this subject based on the ideXlab platform.
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focused high resolution sonography of the suprascapular nerve a simple surrogate marker for neuralgic amyotrophy
Clinical Neurophysiology, 2017Co-Authors: Leonhard Gruber, Alexander Loizides, Wolfgang Loscher, Bernhard Glodny, Hannes GruberAbstract:Abstract Objectives To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). Methods The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the Omohyoid Muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated. Results Patients with NA had significantly higher CSA2-values than controls (6.36 ± 2.75 vs. 2.79 ± 0.83 mm2, p Beyond a CSA2 cut-off value of 4.2 mm2, the ROC-AUC was 0.939 [0.861–1.00] when compared against healthy volunteers and 0.971 [0.901–1.00] when compared to patients with degenerative shoulder pain. Sensitivity was 85.7% [57.2–98.2%], specificity 96.7% [82.8–99.9%], PPV 92.3% [64.0–99.8%], NPV 93.5% [78.6–99.2%], OR 174.0 [14.4–2106.0] and LR 25.7 (95% confidence intervals in brackets). Conclusion SSN swelling in the lateral cervical region could be a supportive finding to identify NA patients. Significance This method allows for the rapid sonographic identification of NA.
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focused high resolution sonography of the suprascapular nerve a simple surrogate marker for neuralgic amyotrophy
Clinical Neurophysiology, 2017Co-Authors: Leonhard Gruber, Alexander Loizides, Wolfgang Loscher, Bernhard Glodny, Hannes GruberAbstract:Abstract Objectives To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). Methods The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the Omohyoid Muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated. Results Patients with NA had significantly higher CSA2-values than controls (6.36±2.75vs. 2.79±0.83mm 2 , p p p =0.008) and CSA1-values were also significantly higher (4.70±2.00vs. 2.90±0.90mm 2 , p =0.0028) than in controls. Beyond a CSA2 cut-off value of 4.2mm 2 , the ROC-AUC was 0.939 [0.861–1.00] when compared against healthy volunteers and 0.971 [0.901–1.00] when compared to patients with degenerative shoulder pain. Sensitivity was 85.7% [57.2–98.2%], specificity 96.7% [82.8–99.9%], PPV 92.3% [64.0–99.8%], NPV 93.5% [78.6–99.2%], OR 174.0 [14.4–2106.0] and LR 25.7 (95% confidence intervals in brackets). Conclusion SSN swelling in the lateral cervical region could be a supportive finding to identify NA patients. Significance This method allows for the rapid sonographic identification of NA.
Leonhard Gruber - One of the best experts on this subject based on the ideXlab platform.
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focused high resolution sonography of the suprascapular nerve a simple surrogate marker for neuralgic amyotrophy
Clinical Neurophysiology, 2017Co-Authors: Leonhard Gruber, Alexander Loizides, Wolfgang Loscher, Bernhard Glodny, Hannes GruberAbstract:Abstract Objectives To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). Methods The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the Omohyoid Muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated. Results Patients with NA had significantly higher CSA2-values than controls (6.36 ± 2.75 vs. 2.79 ± 0.83 mm2, p Beyond a CSA2 cut-off value of 4.2 mm2, the ROC-AUC was 0.939 [0.861–1.00] when compared against healthy volunteers and 0.971 [0.901–1.00] when compared to patients with degenerative shoulder pain. Sensitivity was 85.7% [57.2–98.2%], specificity 96.7% [82.8–99.9%], PPV 92.3% [64.0–99.8%], NPV 93.5% [78.6–99.2%], OR 174.0 [14.4–2106.0] and LR 25.7 (95% confidence intervals in brackets). Conclusion SSN swelling in the lateral cervical region could be a supportive finding to identify NA patients. Significance This method allows for the rapid sonographic identification of NA.
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focused high resolution sonography of the suprascapular nerve a simple surrogate marker for neuralgic amyotrophy
Clinical Neurophysiology, 2017Co-Authors: Leonhard Gruber, Alexander Loizides, Wolfgang Loscher, Bernhard Glodny, Hannes GruberAbstract:Abstract Objectives To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). Methods The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the Omohyoid Muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated. Results Patients with NA had significantly higher CSA2-values than controls (6.36±2.75vs. 2.79±0.83mm 2 , p p p =0.008) and CSA1-values were also significantly higher (4.70±2.00vs. 2.90±0.90mm 2 , p =0.0028) than in controls. Beyond a CSA2 cut-off value of 4.2mm 2 , the ROC-AUC was 0.939 [0.861–1.00] when compared against healthy volunteers and 0.971 [0.901–1.00] when compared to patients with degenerative shoulder pain. Sensitivity was 85.7% [57.2–98.2%], specificity 96.7% [82.8–99.9%], PPV 92.3% [64.0–99.8%], NPV 93.5% [78.6–99.2%], OR 174.0 [14.4–2106.0] and LR 25.7 (95% confidence intervals in brackets). Conclusion SSN swelling in the lateral cervical region could be a supportive finding to identify NA patients. Significance This method allows for the rapid sonographic identification of NA.
Kai Henrik Wiborg Lange - One of the best experts on this subject based on the ideXlab platform.
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ultrasound guided block of the suprascapular nerve a volunteer study of a new proximal approach
Acta Anaesthesiologica Scandinavica, 2014Co-Authors: Christian Rothe, C Steenhansen, Jorgen Lund, M Jenstrup, Kai Henrik Wiborg LangeAbstract:Background The standard approach for the suprascapular nerve block is deep in the supraspinous fossa. However, with this approach, the suprascapular nerve is difficult to visualize by ultrasound. The aim of this study was to describe a new method to visualize and selectively block the suprascapular nerve in a more superficial and proximal location. Methods Twelve healthy volunteers were included. We located the brachial plexus in transverse section with ultrasound, and by longitudinal slide, we identified the departure of the suprascapular nerve from the superior trunk. The suprascapular nerve was followed under ultrasound visualization into the subclavian triangle under the inferior belly of the Omohyoid Muscle. We performed in-plane ultrasound-guided selective suprascapular nerve block by injecting 1 ml of lidocaine, 20 mg/ml close to the nerve. Nerve identification was aided by nerve stimulation. We assessed sensory and motor block of the suprascapular, axillary, radial, median, and ulnar nerves before, 15 and 30 min after performing the block. Results Eight volunteers demonstrated a selective suprascapular nerve block. Three had block failure and one volunteer did not receive the intervention. Conclusions We describe a new ultrasound-guided low-volume local anaesthetic technique to selectively block the suprascapular nerve. The potential clinical role of this new approach remains to be determined.
Urs Eichenberger - One of the best experts on this subject based on the ideXlab platform.
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ultrasound guided suprascapular nerve block description of a novel supraclavicular approach
Regional Anesthesia and Pain Medicine, 2012Co-Authors: Andreas Siegenthaler, Bernhard Moriggl, Sabine Mlekusch, Juerg Schliessbach, Matthias Haug, Michele Curatolo, Urs EichenbergerAbstract:Background and Objectives The suprascapular nerve (SSN) block is frequently performed for different shoulder pain conditions and for perioperative and postoperative pain control after shoulder surgery. Blind and image-guided techniques have been described, all of which target the nerve within the supraspinous fossa or at the suprascapular notch. This classic target point is not always ideal when ultrasound (US) is used because it is located deep under the Muscles, and hence the nerve is not always visible. Blocking the nerve in the supraclavicular region, where it passes underneath the Omohyoid Muscle, could be an attractive alternative. Methods In the first step, 60 volunteers were scanned with US, both in the supraclavicular and the classic target area. The visibility of the SSN in both regions was compared. In the second step, 20 needles were placed into or immediately next to the SSN in the supraclavicular region of 10 cadavers. The accuracy of needle placement was determined by injection of dye and following dissection. Results In the supraclavicular region of volunteers, the nerve was identified in 81% of examinations (95% confidence interval [CI], 74%–88%) and located at a median depth of 8 mm (interquartile range, 6–9 mm). Near the suprascapular notch (supraspinous fossa), the nerve was unambiguously identified in 36% of examinations (95% CI, 28%–44%) (P Conclusions Visualization of the SSN with US is better in the supraclavicular region as compared with the supraspinous fossa. The anatomic dissections confirmed that our novel supraclavicular SSN block technique is accurate.
Alexander Loizides - One of the best experts on this subject based on the ideXlab platform.
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focused high resolution sonography of the suprascapular nerve a simple surrogate marker for neuralgic amyotrophy
Clinical Neurophysiology, 2017Co-Authors: Leonhard Gruber, Alexander Loizides, Wolfgang Loscher, Bernhard Glodny, Hannes GruberAbstract:Abstract Objectives To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). Methods The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the Omohyoid Muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated. Results Patients with NA had significantly higher CSA2-values than controls (6.36 ± 2.75 vs. 2.79 ± 0.83 mm2, p Beyond a CSA2 cut-off value of 4.2 mm2, the ROC-AUC was 0.939 [0.861–1.00] when compared against healthy volunteers and 0.971 [0.901–1.00] when compared to patients with degenerative shoulder pain. Sensitivity was 85.7% [57.2–98.2%], specificity 96.7% [82.8–99.9%], PPV 92.3% [64.0–99.8%], NPV 93.5% [78.6–99.2%], OR 174.0 [14.4–2106.0] and LR 25.7 (95% confidence intervals in brackets). Conclusion SSN swelling in the lateral cervical region could be a supportive finding to identify NA patients. Significance This method allows for the rapid sonographic identification of NA.
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focused high resolution sonography of the suprascapular nerve a simple surrogate marker for neuralgic amyotrophy
Clinical Neurophysiology, 2017Co-Authors: Leonhard Gruber, Alexander Loizides, Wolfgang Loscher, Bernhard Glodny, Hannes GruberAbstract:Abstract Objectives To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). Methods The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the Omohyoid Muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated. Results Patients with NA had significantly higher CSA2-values than controls (6.36±2.75vs. 2.79±0.83mm 2 , p p p =0.008) and CSA1-values were also significantly higher (4.70±2.00vs. 2.90±0.90mm 2 , p =0.0028) than in controls. Beyond a CSA2 cut-off value of 4.2mm 2 , the ROC-AUC was 0.939 [0.861–1.00] when compared against healthy volunteers and 0.971 [0.901–1.00] when compared to patients with degenerative shoulder pain. Sensitivity was 85.7% [57.2–98.2%], specificity 96.7% [82.8–99.9%], PPV 92.3% [64.0–99.8%], NPV 93.5% [78.6–99.2%], OR 174.0 [14.4–2106.0] and LR 25.7 (95% confidence intervals in brackets). Conclusion SSN swelling in the lateral cervical region could be a supportive finding to identify NA patients. Significance This method allows for the rapid sonographic identification of NA.
