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peripheral ultrasound

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https://www.readbyqxmd.com/read/28722597/occult-amoebic-liver-abscess-as-cause-of-extensive-inferior-vena-cava-and-hepatic-vein-thrombosis
#1
Leslie Martin, Nishigandha Burute, Ehsan Haider, Pablo E Serrano, Timothy O'Shea, Deborah Siegal
The most common extraintestinal complication of Entamoeba histolytica is amoebic liver abscess (ALA). Hepatic vein and inferior vena cava (IVC) thrombosis are rare but well-documented complications of ALA, typically attributed to mechanical compression and inflammation associated with a large abscess. We present a case of a previously healthy 43-year-old Canadian man presenting with constitutional symptoms and right upper quadrant abdominal pain. He was found to have thrombophlebitis of the IVC, accessory right hepatic vein, and bilateral iliac veins...
July 3, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28716433/unmyelinated-peripheral-nerves-can-be-stimulated-in%C3%A2-vitro-using-pulsed-ultrasound
#2
Christopher J Wright, Seyyed R Haqshenas, John Rothwell, Nader Saffari
Appreciation for the medical and research potential of ultrasound neuromodulation is growing rapidly, with potential applications in non-invasive treatment of neurodegenerative disease and functional brain mapping spurring recent progress. However, little progress has been made in our understanding of the ultrasound-tissue interaction. The current study tackles this issue by measuring compound action potentials (CAPs) from an ex vivo crab walking leg nerve bundle and analysing the acoustic nature of successful stimuli using a passive cavitation detector (PCD)...
July 14, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28714206/efficacy-of-ultrasound-and-nerve-stimulation-guidance-in-peripheral-nerve-block-a-systematic-review-and-meta-analysis
#3
Zhi-Xue Wang, De-Li Zhang, Xin-Wei Liu, Yan Li, Xiao-Xia Zhang, Ru-Hong Li
Evidence was controversial about whether nerve stimulation (NS) can optimize ultrasound guidance (US)-guided nerve blockade for peripheral nerve block. This review aims to explore the effects of the two combined techniques. We searched EMBASE (from 1974 to March 2015), PubMed (from 1966 to Mar 2015), Medline (from 1966 to Mar 2015), the Cochrane Central Register of Controlled Trials and clinicaltrials.gov. Finally, 15 randomized trials were included into analysis involving 1,019 lower limb and 696 upper limb surgery cases...
July 16, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28713555/case-report-using-ultrasound-to-prevent-a-broken-catheter-from-migrating-to-the-heart
#4
Pieter J Schraverus, Suzanne van Rijswijk, Pieter Roel Tuinman
Peripheral intravenous (IV) catheters can break off while still in the patient, with possible detrimental effects such as upstream migration to the heart. These catheters have probably been damaged by the needle during a difficult insertion. A peripheral IV catheter was removed in a 90 year old patient and only half of the catheter was retrieved. By using ultrasound examination the remaining part of the IV catheter was identified, and retrieved surgically, before it could migrate towards the heart. This case report suggests that ultrasound should not only be used for difficult placement of a peripheral IV catheter, but can also be used when removal is complicated...
2017: F1000Research
https://www.readbyqxmd.com/read/28712884/the-supraorbital-region-revisited-an-anatomic-exploration-of-the-neuro-vascular-bundle-with-regard-to-frontal-migraine-headache
#5
Valeria Berchtold, Hannes Stofferin, Bernhard Moriggl, Erich Brenner, Reinhard Pauzenberger, Marko Konschake
BACKGROUND: Recent findings on the pathogenesis of frontal migraine headache support, besides a central vasogenic cause, an alternative peripheral mechanism involving compressed craniofacial nerves. This is further supported by the efficiency of botulinum toxin injections as a new treatment option in frontal migraine headache patients. METHODS: The supraorbital regions of 22 alcohol-glycerine-embalmed facial halves of both sexes were dissected. Both the supratrochlear and supraorbital nerves (STN and SON, respectively) were identified, and their relationship with the corrugator supercilii muscle (CSM) was investigated by dissection and ultrasound...
June 27, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28712103/randomised-controlled-trial-of-analgesic-effectiveness-of-three-different-techniques-of-single-shot-interscalene-brachial-plexus-block-using-20-ml-of-0-5-ropivacaine-for-shoulder-arthroscopy
#6
Michał Jan Stasiowski, Michał Kolny, Marek Zuber, Radosław Marciniak, Ewa Chabierska, Przemysław Jałowiecki, Aleksandra Pluta, Bartłomiej Możdżyński
Background Shoulder arthroscopic procedures impose a challenge to anaesthesiologists in terms of postoperative analgesia. Proper pain management after arthroscopic procedures improves patient satisfaction and facilitates early rehabilitation. METHODS: We performed a randomized, prospective clinical study to assess the influence of anthropometric parameters and IBPB technique on the quality of postoperative analgesia. A total of 106 randomly selected patients of ASA I-III status scheduled for elective shoulder arthroscopy ...
July 16, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28709889/dynamic-contrast-enhanced-mri-improves-classification-of-prostate-lesions-a-study-of-pathologic-outcomes-on-targeted-prostate-biopsy
#7
Sasha C Druskin, Ryan Ward, Andrei S Purysko, Allen Young, Jeffrey J Tosoian, Kamyar Ghabili, Darian Andreas, Eric Klein, Ashley E Ross, Katarzyna J Macura
PURPOSE: PIRADSv2 stipulates that dynamic-contrast-enhanced-imaging (DCE) be used to classify diffusion-weighted-imaging (DWI) score 3 (DWI3) peripheral-zone (PZ) lesions as PIRADS score 3 (PIRADS3; DCE-) or PIRADS4 (DCE+). However, it is unknown if DCE separates lesions into clinically-meaningful pathologic groups. We examined whether use of DCE improves detection of clinically-significant cancer. MATERIALS & METHODS: We identified patients without a prior diagnosis of prostate cancer undergoing multiparametric-MRI-transrectal-ultrasound fusion targeted-biopsy of PZ DWI3 or DWI4 lesions...
July 11, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28705064/validation-of-prostate-imaging-reporting-and-data-system-version-2-using-an-mri-ultrasound-fusion-biopsy-in-prostate-cancer-diagnosis
#8
See Hyung Kim, Mi Sun Choi, Mi Jung Kim, Young Hwan Kim, Seung Hyun Cho
OBJECTIVE: The purpose of our study was to prospectively assess Prostate Imaging Reporting and Data System (PI-RADS) version 2 using an MRI-ultrasound fusion biopsy. SUBJECTS AND METHODS: This study included 295 consecutive patients with 478 lesions who underwent multiparametric MRI and subsequent MRI-ultrasound fusion biopsy between December 2014 and September 2016. Lesions were assessed by using an overall score of PI-RADS version 2. One radiologist assessed the presence or absence of clinically significant prostate cancer in the whole gland and in subgroups of the peripheral zone and transition zone by using cutoff values of ≥ 4 and ≥ 3...
July 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28702337/linear-ebus-guided-fiducial-marker-placement-to-guide-radiotherapy-for-endobronchial-radiographically-occult-synchronous-primary-squamous-cell-carcinoma-of-the-lung
#9
David Maurice Chambers, Gregory John Pfister, Umair Ahmad Gauhar
Radiation therapy has emerged as a useful alternative therapy for patients with early-stage, non-resectable lung cancer. In patients whose malignancies are difficult to localize on computed tomography imaging, such therapy becomes difficult. Fiducial markers are frequently placed in peripheral pulmonary lesions to assist radiation therapy. Although placement of markers under linear endobronchial ultrasonography within mediastinal and hilar lymph nodes has been reported, no strategy has been described to assist radiotherapy of purely endobronchial tumors...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28699679/one-session-of-remote-ischemic-preconditioning-does-not-improve-vascular-function-in-acute-normobaric-and-chronic-hypobaric-hypoxia
#10
Mathew G Rieger, Ryan L Hoiland, Joshua C Tremblay, Mike Stembridge, Anthony R Bain, Daniela Flück, Prajan Subedi, James D Anholm, Philip N Ainslie
Application of repeated short duration bouts of ischemia to the limbs, termed remote ischemic preconditioning (RIPC), is a novel technique that may have protective effects on vascular function during hypoxic exposures. In separate parallel-design studies, at sea-level (SL; n = 16), and after 8-12 days at high-altitude (HA; n = 12; White Mountain, 3800 m), participants underwent either a sham protocol or one session of 4 × 5 minutes of dual-thigh cuff occlusion with 5 minutes recovery. Brachial artery flow-mediated dilation (FMD; ultrasound), pulmonary artery systolic pressure (PASP; echocardiography), and internal carotid artery flow (ICA; ultrasound) were measured at SL in normoxia and isocapnic hypoxia [end-tidal PO₂ (PETO₂) maintained to 50 mmHg], and during normal breathing at HA...
July 12, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28696947/regional-blocks-carried-out-during-general-anesthesia-or-deep-sedation-myths-and-facts
#11
Peter Marhofer
PURPOSE OF REVIEW: More patients will accept regional blocks if these are performed during sedation or general anesthesia. This review discusses regional anesthesia in sedated or anesthetized patients. RECENT FINDINGS: As complications of regional blocks are rare, regional anesthesia can be considered aswell-tolerated. Awake patients will notice only a minority of needle-to-nerve contacts, that renders the notion of a 'live monitor' obsolete. Using high-resolution ultrasound, the needle can be advanced to an extraepineural position for injection, thus strictly avoiding needle-to-nerve contact or intraepineural injection of local anesthetic...
July 10, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28693244/improvement-of-diagnostic-efficiency-in-distinguishing-the-benign-and-malignant-thyroid-nodules-via-conventional-ultrasound-combined-with-ultrasound-contrast-and-elastography
#12
Mei-Juan Liu, Yan-Ming Men, Yong-Lin Zhang, Yu-Xi Zhang, Hao Liu
We aimed to evaluate the diagnostic values of conventional ultrasound (US), ultrasound contrast (UC) and ultrasound elastography (UE) in distinguishing the benign and malignant thyroid nodules. A total of 100 patients with thyroid nodules receiving operative treatment were selected; they underwent the conventional US, UE and UC examinations before operation, respectively. The nodules received pathological examination after operation to distinguish benign from malignant lesions. The sensitivity, specificity and diagnostic accordance rate of each diagnostic method was evaluated by receiver operating characteristic (ROC) curve, and the area under the curve (AUC) of ROC was calculated...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28692451/the-value-of-musculoskeletal-ultrasound-in-geriatric-care-and-rehabilitation
#13
Büşra Can, Murat Kara, Özgür Kara, Zekeriya Ülger, Walter Frontera, Levent Özçakar
The WHO reports that one of the major chronic conditions affecting the elderly worldwide is musculoskeletal disorders that are associated with long-term pain and disability. Considering the healthcare needs of the elderly (i.e. comprehensive, accessible, efficient) and the advantages of ultrasound (US) use (patient-friendly, convenient, cost-effective, and does not require exposure to radiation or magnetic fields), there seems to be a 'gap' in the actual clinical practice. In this paper, we aimed to highlight the potential value of US imaging in the management of the elderly with a wide spectrum of musculoskeletal conditions (degenerative/rheumatic joint diseases, falls/trauma, nursing care, peripheral nerve problems, sarcopenia, and interventions)...
July 7, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28691118/contrast-enhanced-ultrasound-reveals-exercise-induced-perfusion-deficits-in-claudicants
#14
Rishi Kundi, Steven J Prior, Odessa Addison, Michael Lu, Alice S Ryan, Brajesh K Lal
BACKGROUND: Contrast-Enhanced Ultrasonography (CEUS) is an imaging modality allowing perfusion quantification in targeted regions of interest of the lower extremity that has not been possible with color-flow imaging or with measurement of ankle brachial indices. We developed a protocol to quantify lower extremity muscle perfusion impairment in PAD patients in response to exercise. METHODS AND FINDINGS: Thirteen patients with Rutherford Class I-III Peripheral Arterial Disease (PAD) and no prior revascularization procedures were recruited from the Baltimore Veterans Affairs Medical Center and compared with eight control patients without PAD...
2017: J Vasc Endovasc Surg
https://www.readbyqxmd.com/read/28689300/apoptotic-and-genotoxic-effects-of-low-intensity-ultrasound-on-healthy-and-leukemic-human-peripheral-mononuclear-blood-cells
#15
Timur Saliev, Dinara Begimbetova, Dinara Baiskhanova, Danysh Abetov, Ulykbek Kairov, Charles P Gilman, Bakhyt Matkarimov, Katsuro Tachibana
PURPOSE: To scrutinize the apoptotic and genotoxic effects of low-intensity ultrasound and an ultrasound contrast agent (SonoVue; Bracco Diagnostics Inc., EU) on human peripheral mononuclear blood cells (PMBCs). METHODS: PMBCs were subjected to a low-intensity ultrasound field (1-MHz frequency; spatial peak temporal average intensity 0.18 W/cm2) followed by analysis for apoptosis and DNA damage (single-strand breaks + double-strand breaks). The comet assay was then repeated after 2 h to examine the ability of cells to repair DNA breaks...
July 8, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28688714/restenosis-predictors-after-carotid-angioplasty-and-stenting-and-its-influence-on-procedure-durability-single-center-experience
#16
Ossama Y Mansour, Abdelrahman Ibrahim, Mostafa Talaat
BACKGROUND: This article reports our experience regarding in-stent restenosis in the carotid arteries with special focus was given to angiographic morphology and clinical predictors of in-stent restenosis. METHODS: Between July 2008 and August 2011, 245 carotid angioplasty and stenting procedures were performed in 243 patients (172 men and 71 women). Stenting for de novo stenoses was performed in 214 (87.3%) carotid arteries, and 31 (12.7%) vessels were treated because of postsurgical restenosis...
July 5, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28685257/budd-chiari-syndrome-hepatic-venous-outflow-tract-obstruction
#17
REVIEW
Dominique-Charles Valla
BACKGROUND: Budd-Chiari syndrome (BCS) is a rare disease characterized by hepatic venous outflow tract obstruction (HVOTO). METHODS: Recent literature has been analyzed for this narrative review. RESULTS: Primary BCS/HVOTO is a result of thrombosis. The same patient often has multiple risk factors for venous thrombosis and most have at least one. Presentation and etiology may differ between Western and certain Eastern countries. Myeloproliferative neoplasms are present in 40% of patients and are usually associated with the V617F-JAK2 mutation in myeloid cells, in particular peripheral blood granulocytes...
July 6, 2017: Hepatology International
https://www.readbyqxmd.com/read/28685192/venous-thrombosis-and-stenosis-after-peripherally-inserted-central-catheter-placement-in-children
#18
H Stella Shin, Alexander J Towbin, Bin Zhang, Neil D Johnson, Stuart L Goldstein
BACKGROUND: Peripherally inserted central catheters (PICCs) can lead to development of venous thrombosis and/or stenosis. The presence of venous thrombosis and/or stenosis may preclude children with chronic medical conditions from receiving lifesaving therapies, from hemodialysis in end-stage renal disease to total parenteral nutrition in short bowel syndrome. Several adult studies have found an association between PICCs and venous thrombosis and/or stenosis, but none has evaluated for this association in children...
July 6, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28683511/-extracranial-schwannomas-of-the-head-and-neck-clinical-approach-based-on-20-cases
#19
Benedikt Höing, Boris A Stuck, Benjamin Kansy, Timon Hussain, Anke Schlüter, Laura Holtmann, Adrian Ringelstein, Stefan Mattheis, Stephan Lang, Nina Dominas
Background Schwannomas are rare benign tumors originating from the perineural cells forming the myelin layer in the peripheral nervous system (PNS). While well established therapeutic concepts exist for intracranial schwannomas, there is a lack of consistent clinical standards for extracranial schwannomas. Method This retrospective study describes the clinical pathway of 20 patients with histologically proven extracranial schwannomas of the head and neck. The diagnostic and therapeutic strategies for schwannomas are discussed with special emphasis on localization and functional outcome...
July 6, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28683002/report-of-modification-for-peripherally-inserted-central-catheter-placement-subcutaneous-needle-tunnel-for-high-upper-arm-placement
#20
Matthew D Ostroff, Nancy L Moureau
The majority of peripherally inserted central catheters (PICCs) are currently inserted with the aid of ultrasound guidance in the middle third of the upper arm. A growing patient population is presenting with challenging vessel access requiring placement of the PICC in the high upper third of the arm. To avoid this suboptimal exit site, a subcutaneous tunneling of the PICC is established away from the axilla to a more appropriate skin exit site. A prospective evaluation was performed in a single facility for all PICC placements from September 2014 to June 2015...
July 2017: Journal of Infusion Nursing: the Official Publication of the Infusion Nurses Society
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