The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Andreas Mauerer - One of the best experts on this subject based on the ideXlab platform.
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the oblique fracture of the Manubrium sterni caused by a seatbelt a rare injury treatment options based on the experiences gained in a level i trauma centre
International Orthopaedics, 2016Co-Authors: Stefan Schulzdrost, Sebastian Krinner, Pascal Oppel, Sina Grupp, Friedrich F. Hennig, Andreas Langenbach, Dominic Taylor, Andreas MauererAbstract:Introduction Sternal fractures are rare with 3–8 % out of the total number of trauma cases mostly caused by direct impact to the anterior chest wall. Most cases described are due to motor vehicle crash either caused by direct impact to the steering wheel or by the seat belt. Fractures mainly occur to the sternal body. Only rarely are cases of Manubrium fractures described in literature, for example, in relationship with a direct impact to the shoulder which caused an oblique fracture near to the sternoclavicular joint. Three patients with profoundly dislocated oblique Manubrium fracture were admitted to our Level I Trauma Center in 2012 and 2013. Those patients suffered from instability of the upper sternum and the shoulder girdle.
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The oblique fracture of the Manubrium sterni caused by a seatbelt—a rare injury? Treatment options based on the experiences gained in a level I trauma centre
International Orthopaedics, 2015Co-Authors: Stefan Schulz-drost, Sebastian Krinner, Pascal Oppel, Sina Grupp, Friedrich F. Hennig, Andreas Langenbach, Dominic Taylor, Andreas MauererAbstract:Introduction Sternal fractures are rare with 3–8 % out of the total number of trauma cases mostly caused by direct impact to the anterior chest wall. Most cases described are due to motor vehicle crash either caused by direct impact to the steering wheel or by the seat belt. Fractures mainly occur to the sternal body. Only rarely are cases of Manubrium fractures described in literature, for example, in relationship with a direct impact to the shoulder which caused an oblique fracture near to the sternoclavicular joint. Three patients with profoundly dislocated oblique Manubrium fracture were admitted to our Level I Trauma Center in 2012 and 2013. Those patients suffered from instability of the upper sternum and the shoulder girdle.
Yu Daoyuan - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 5 in Two new species of Tomocerus ocreatus group with a single large distal dental spine (Collembola, Tomoceridae)
2018Co-Authors: Gong Xin, Qin Chunyan, Yu DaoyuanAbstract:FIGURE 5. Tomocerus paraspinulus sp. nov.; (A) left side of Manubrium (dorsal view); (B) distal area of Manubrium (dorsal view); (C) basal part of dens (dorsal view); (D) dental spine; (E) left mucro (inner view). Symbols as for Figure 2 and 3
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FIGURE 3 in Two new species of Tomocerus ocreatus group with a single large distal dental spine (Collembola, Tomoceridae)
2018Co-Authors: Gong Xin, Qin Chunyan, Yu DaoyuanAbstract:FIGURE 3. Tomocerus pseudospinulus sp. nov. (A) left side of Manubrium (dorsal view, showing lateral chaetae, Λ—scale socket); (B) distal area of Manubrium (dorsal view, arrow pointing to distal corner chaeta); (C) basal part of dens (dorsal view, showing dental spines and prominent chaeta); (D) large and small dental spines; (E) right mucro (outer view). Symbols as for Figure 2
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FIGURE 3 in Three new species of Tomocerus from tropical zone of China (Collembola, Tomoceridae)
2018Co-Authors: Yu Daoyuan, Yang Xiaodong, Liu ManqiangAbstract:FIGURE 3. Tomocerus tropicus sp. nov. (A) left side of Manubrium (dorsal view, showing lateral chaetae and prominent chaetae, Λ-shape mark—socket of scales); (B) distal area of Manubrium (dorsal view, arrow pointing to distal corner chaeta); (C) basal part of dens (dorsal view, showing dental spines and prominent chaeta); (D) dorsal and ventral sides of large dental spine; (E) left mucro (inner view). Symbols as for Figure 2
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FIGURE 7 in Three new species of Tomocerus from tropical zone of China (Collembola, Tomoceridae)
2018Co-Authors: Yu Daoyuan, Yang Xiaodong, Liu ManqiangAbstract:FIGURE 7. Tomocerus nabanensis sp. nov. (A) left side of Manubrium (dorsal view); (B) basal part of dens (dorsal view); (C) large and small dental spines; (D) left mucro (inner view). Symbols as for Figures 2 and 3
Soon Ho Choi - One of the best experts on this subject based on the ideXlab platform.
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Manubrium sparing median sternotomy as a uniform approach for cardiac operations
Texas Heart Institute Journal, 2000Co-Authors: Jong Bum Choi, Hyun Woong Yang, Jae O Han, Soon Ho ChoiAbstract:We used a Manubrium-sparing sternotomy to perform intracardiac operations on 26 patients between November 1997 and April 1998. We developed this less-invasive surgical technique as a uniform approach in order to reduce skin and skeletal trauma, while maintaining the advantages of the full median sternotomy, such as standard aortic and venous cannulations and use of both antegrade and retrograde cardioplegia. During the same period, 26 other patients with intracardiac lesions underwent operation through a standard full sternotomy. In the Manubrium-sparing sternotomy group, there was no intraoperative complication or conversion to full median sternotomy. The average postoperative chest drainage was less in the Manubrium-sparing sternotomy group (242.7 ± 184.5 mL/24 hours, vs 499.2 ± 416.3 mL/24 hours; P <0.01). Two patients (7.7%) in the Manubrium-sparing sternotomy group had superficial wound disruption, but 4 patients (15.4%) in the full sternotomy group had more severe wound infection, and 1 required myoplasty because of deep wound infection. During the mean follow-up period (12.4 ± 1.9 months), no patient in the Manubrium-sparing sternotomy group reported significant discomfort or pain due to the sternotomy, but 6 patients (23.1%) in the full sternotomy group complained of significant sternal pain, while 4 (15.4%) experienced shoulder pain, and 1 (3.8%) experienced numbness of the 4th and 5th fingers of both hands. We conclude that the Manubrium-sparing sternotomy is a safe and useful approach for most cardiac operations. It is effective in reducing surgical trauma and postoperative wound discomfort.
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Manubrium-sparing median sternotomy as a uniform approach for cardiac operations.
Texas Heart Institute Journal, 2000Co-Authors: Jong Bum Choi, Hyun Woong Yang, Jae O Han, Soon Ho ChoiAbstract:We used a Manubrium-sparing sternotomy to perform intracardiac operations on 26 patients between November 1997 and April 1998. We developed this less-invasive surgical technique as a uniform approach in order to reduce skin and skeletal trauma, while maintaining the advantages of the full median sternotomy, such as standard aortic and venous cannulations and use of both antegrade and retrograde cardioplegia. During the same period, 26 other patients with intracardiac lesions underwent operation through a standard full sternotomy. In the Manubrium-sparing sternotomy group, there was no intraoperative complication or conversion to full median sternotomy. The average postoperative chest drainage was less in the Manubrium-sparing sternotomy group (242.7 ± 184.5 mL/24 hours, vs 499.2 ± 416.3 mL/24 hours; P
Jef Aernouts - One of the best experts on this subject based on the ideXlab platform.
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viscoelastic properties of the human tympanic membrane studied with stroboscopic holography and finite element modeling
Hearing Research, 2014Co-Authors: Daniel De Greef, Jef Aernouts, Johan R M Aerts, Jeffrey Cheng, Rachelle Horwitz, John J. RosowskiAbstract:Abstract A new anatomically-accurate Finite Element (FE) model of the tympanic membrane (TM) and malleus was combined with measurements of the sound-induced motion of the TM surface and the bony Manubrium, in an isolated TM-malleus preparation. Using the results, we were able to address two issues related to how sound is coupled to the ossicular chain: (i) Estimate the viscous damping within the tympanic membrane itself, the presence of which may help smooth the broadband response of a potentially highly resonant TM, and (ii) Investigate the function of a peculiar feature of human middle-ear anatomy, the thin mucosal epithelial fold that couples the mid part of the human Manubrium to the TM. Sound induced motions of the surface of ex vivo human eardrums and mallei were measured with stroboscopic holography, which yields maps of the amplitude and phase of the displacement of the entire membrane surface at selected frequencies. The results of these measurements were similar, but not identical to measurements made in intact ears. The holography measurements were complemented by laser-Doppler vibrometer measurements of sound-induced umbo velocity, which were made with fine-frequency resolution. Comparisons of these measurements to predictions from a new anatomically accurate FE model with varied membrane characteristics suggest the TM contains viscous elements, which provide relatively low damping, and that the epithelial fold that connects the central section of the human Manubrium to the TM only loosely couples the TM to the Manubrium. The laser-Doppler measurements in two preparations also suggested the presence of significant variation in the complex modulus of the TM between specimens. Some animations illustrating the model results are available at our website ( www.uantwerp.be/en/rg/bimef/downloads/tympanic-membrane-motion ).
James Mason - One of the best experts on this subject based on the ideXlab platform.
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Manubrium-limited ministernotomy versus conventional sternotomy for aortic valve replacement (MAVRIC) : study protocol for a randomised controlled trial
Trials, 2017Co-Authors: Enoch Akowuah, Andrew Goodwin, W. Andrew Owens, Helen C. Hancock, Rebecca Maier, Adetayo Kasim, Adrian Mellor, Khalid Khan, Gavin J. Murphy, James MasonAbstract:Aortic valve replacement is one of the most common cardiac surgical procedures performed worldwide. Conventional aortic valve replacement surgery is performed via a median sternotomy; the sternum is divided completely from the sternal notch to the xiphisternum. Minimally invasive aortic valve replacement, using a new technique called Manubrium-limited ministernotomy, divides only the Manubrium from the sternal notch to 1 cm below the manubrio-sternal junction. More than one third of patients undergoing conventional sternotomy develop clinically significant bleeding requiring post-operative red blood cell transfusion. Case series data suggest a potentially clinically significant difference in red blood cell transfusion requirements between the two techniques. Given the implications for National Health Service resources and patient outcomes, a definitive trial is needed. This is a single-centre, single-blind, randomised controlled trial comparing aortic valve replacement surgery using Manubrium-limited ministernotomy (intervention) and conventional median sternotomy (usual care). Two hundred and seventy patients will be randomised in a 1:1 ratio between the intervention and control arms, stratified by baseline logistic EuroSCORE and haemoglobin value. Patients will be followed for 12 weeks from discharge following their index operation. The primary outcome is the proportion of patients who receive a red blood cell transfusion post-operatively within 7 days of surgery. Secondary outcomes include red blood cell and blood product transfusions, blood loss, re-operation rates, sternal wound pain, quality of life, markers of inflammatory response, hospital discharge, health care utilisation, cost and cost effectiveness and adverse events. This is the first trial to examine aortic valve replacement via Manubrium-limited ministernotomy versus conventional sternotomy when comparing red blood cell transfusion rates following surgery. Surgical trials present significant challenges; strengths of this trial include a rigorous research design, standardised surgery performed by experienced consultant cardiothoracic surgeons, an agreed anaesthetic regimen, patient blinding and consultant-led patient recruitment. The MAVRIC trial will demonstrate that complex surgical trials can be delivered to exemplary standards and provide the community with the knowledge required to inform future care for patients requiring aortic valve replacement surgery. International Standard Randomised Controlled Trial Number (ISRCTN) ISRCTN29567910 . Registered on 3 February 2014.
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Manubrium-limited ministernotomy versus conventional sternotomy for aortic valve replacement (MAVRIC): study protocol for a randomised controlled trial.
2017Co-Authors: Enoch Akowuah, Helen C. Hancock, Rebecca Maier, Adetayo Kasim, Adrian Mellor, Khalid Khan, Andrew T. Goodwin, Andrew W. Owens, Gavin Murphy, James MasonAbstract:Background Aortic valve replacement is one of the most common cardiac surgical procedures performed worldwide. Conventional aortic valve replacement surgery is performed via a median sternotomy; the sternum is divided completely from the sternal notch to the xiphisternum. Minimally invasive aortic valve replacement, using a new technique called Manubrium-limited ministernotomy, divides only the Manubrium from the sternal notch to 1 cm below the manubrio-sternal junction. More than one third of patients undergoing conventional sternotomy develop clinically significant bleeding requiring post-operative red blood cell transfusion. Case series data suggest a potentially clinically significant difference in red blood cell transfusion requirements between the two techniques. Given the implications for National Health Service resources and patient outcomes, a definitive trial is needed. Methods/design This is a single-centre, single-blind, randomised controlled trial comparing aortic valve replacement surgery using Manubrium-limited ministernotomy (intervention) and conventional median sternotomy (usual care). Two hundred and seventy patients will be randomised in a 1:1 ratio between the intervention and control arms, stratified by baseline logistic EuroSCORE and haemoglobin value. Patients will be followed for 12 weeks from discharge following their index operation. The primary outcome is the proportion of patients who receive a red blood cell transfusion post-operatively within 7 days of surgery. Secondary outcomes include red blood cell and blood product transfusions, blood loss, re-operation rates, sternal wound pain, quality of life, markers of inflammatory response, hospital discharge, health care utilisation, cost and cost effectiveness and adverse events. Discussion This is the first trial to examine aortic valve replacement via Manubrium-limited ministernotomy versus conventional sternotomy when comparing red blood cell transfusion rates following surgery. Surgical trials present significant challenges; strengths of this trial include a rigorous research design, standardised surgery performed by experienced consultant cardiothoracic surgeons, an agreed anaesthetic regimen, patient blinding and consultant-led patient recruitment. The MAVRIC trial will demonstrate that complex surgical trials can be delivered to exemplary standards and provide the community with the knowledge required to inform future care for patients requiring aortic valve replacement surgery. Trial registration International Standard Randomised Controlled Trial Number (ISRCTN) ISRCTN29567910. Registered on 3 February 2014
