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Systematic reviews and quality assessment of patient-reported outcome measures for physical function in comparative effectiveness studies regarding acute postoperative pain after total knee arthroplasty-Do we need to start all over again? Eur J Pain 2024. [PMID: 38623029 DOI: 10.1002/ejp.2272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 02/29/2024] [Accepted: 03/24/2024] [Indexed: 04/17/2024]
Abstract
BACKGROUND AND OBJECTIVE Recently, a consensus process specified a core outcome set (COS) of domains to be assessed in each comparative effectiveness research and clinical practice related to acute postoperative pain. Physical function (PF) was one of these domains. The aim of this review was to investigate which patient-reported outcome measures (PROMs) are used to assess PF after total knee arthroplasty (TKA) in clinical trials and if they fulfil basic requirements for a COS of PROMs based on their psychometric properties. METHODS A systematic review of randomized controlled trials and observational studies based on a search in MEDLINE, EMBASE and CENTRAL was undertaken. PROMs and performance measures were extracted and investigated, including evaluation of psychometric properties of PROMs based on COSMIN recommendations. RESULTS From initially 2896 identified records, 479 studies were included in the qualitative synthesis. Only 87 of these trials (18%) assessed PF using PROMs, whereas especially performance outcome measures were used in 470 studies (98%). Application of the 'COSMIN Risk-of-Bias-Box 1' to 13 of the 14 identified PROMs resulted in insufficient content validity of the included PROMs regarding the target population based on the inauguration or development articles. CONCLUSION Our data indicate that a patient-centred postoperative assessment of PF in pain-related clinical trials early after TKA is not common, even though patient-reported assessment is widely recommended. In addition, none of the applied PROMs shows content validity based on their inauguration or development articles for the assessment of postoperative pain-related PF after TKA. SIGNIFICANCE A systematic search for patient-reported outcome measures assessing postoperative, pain-related physical function after total knee arthroplasty in clinical trials and assessment of their content validity revealed none that fulfilled requirements based on COSMIN recommendations.
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Use of the SherpaPak Cardiac Transport System for Infant and Pediatric Donor Hearts: An Initial Experience. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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The Intra-Operative “Gross Pathology”: An Approach to Determining Heart-Only Versus Heart-Liver Transplantation in Fontan Patients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Impact of Heartware Vad Discontinuation on the Pediatric Population-An Advanced Heart Failure Improving Outcomes (ACTION) Registry Analysis. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Colocutaneous Fistula Following Pediatric Bivad Implantation, A Rare but Serious Complication. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Evaluating the Impact of Donor-Recipient Race Mismatch on Graft Survival in Infant Heart Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Racial Disparities in Pediatric Heart Transplantation: A National Registry Analysis. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Advanced Cardiac Therapies Improving Outcomes Network (ACTION) Outcomes Report. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Weight Matching in Infant Heart Transplantation: Analysis of the United Network for Organ Sharing Database. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Taking a Closer Look at Distance: Does Increasing the Maximal Donor Distance Range Shorten Waitlist Times in Pediatric Heart Transplant Candidates? J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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The ABC's of Stroke Prevention: Reduction in Stroke Frequency Following a Quality Improvement Intervention by the Action Learning Network. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Evaluating Matching by Predicted Heart Mass in Adolescent Heart Transplantation: Analysis of the United Network for Organ Sharing Database. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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The Adjudication Process at ACTION - Providing Real-World High-Quality Data. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
COVID-19 has presented with a variety of manifestations including peripheral neurological symptoms. The most commonly associated peripheral neuropathies described with COVID-19 are Guillain-Barre syndrome and its variants as well as critical illness polyneuropathy. We report in this paper the distinct MRI findings of an unusual case of peripheral neuropathy associated with COVID-19. These findings are similar to those seen in Guillain-Barre syndrome or one of its variants, although differing from the classic condition in certain key clinical and radiological features.
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M276 A CASE OF ROSAI-DORFMAN DISEASE IN AN INFANT. Ann Allergy Asthma Immunol 2020. [DOI: 10.1016/j.anai.2020.08.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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PO-1691: Apparent diffusion coefficient changes in weekly MRI during radiotherapy in head and neck cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01709-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Contemporary Berlin Heart EXCOR Outcomes in North America: Report from the ACTION Registry. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Variation in Cardiac Rehabilitation for Pediatric Ventricular Assist Device Recipients across North America: An ACTION Network Survey. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Taking a Closer Look at Distance: Does Increasing the Maximal Donor Distance Range Shorten Waitlist Times in Pediatric Heart Transplant Candidates? J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Phase II study of neoadjuvant cemiplimab prior to surgery in patients with stage III/IV (M0) cutaneous squamous cell carcinoma of the head and neck (CSCC-HN). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz394.071] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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21
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Real World Data from the ACTION Quality Improvement Network - Preliminary Experience with a Magnetically Levitated Ventricular Assist Device in US Pediatric Centers. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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22
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EP-2021 Commissioning and clinical implementation of dose accumulation and adaptive radiotherapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32441-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Anti-Coagulation Management in Pediatric Ventricular Assist Device: A Quality Improvement Target. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Speaking the Same Language? Assessing Blood Pressure Measurement and Effectiveness in Pediatric VAD Patients. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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PV-0202 3-D reconstruction of radiotherapy dose associated with advanced osteoradionecrosis after IMRT. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30622-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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PO-124 Three-dimensional radiation dose of osteoradionecrosis in oropharyngeal cancer receiving IMRT. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30290-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4:12 PM Abstract No. 69 Tunneled peritoneal drainage catheter for refractory ascites: a single-center experience of 480 patients. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Gait deviations in transverse plane after SCFE in dependence on the femoral offset. Gait Posture 2017; 58:358-362. [PMID: 28866455 DOI: 10.1016/j.gaitpost.2017.08.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 07/29/2017] [Accepted: 08/21/2017] [Indexed: 02/02/2023]
Abstract
Residual deformity of the femoral head after slipped capital femoral epiphysis (SCFE) may be accompanied by a loss of femoral offset and lead to femoro-acetabular impingement (FAI), especially during hip flexion. It is hypothesized that during phases of the gait cycle, when the hip is flexed, the offset-loss is compensated by an increased external rotation. The gait pattern of 36 patients suffering from SCFE, who were treated by pinning-in-situ, were compared to a control group of 40 healthy adults by an instrumented 3D-gait analysis. Total patient group was subdivided into 3 subgroups in dependence on the offset (offset groups (OG)) quantified by the angle α according to Nötzli: OG1: α-angle <55°, OG2: α-angle between 55 and 75°, OG3: α-angle >75°. Comparisons were made at 3 instants: initial foot contact (0% gait cycle (GC)), 40-60% GC and 90-100% GC. Patients showed an increased external hip rotation during all 3 periods of the GC with a tendency of increasing external rotation in association with offset-loss. Only during hip extension (40-60% GC) there was a weak correlation between angle α and hip rotation (r=-0.375, p=0.024). In conclusion, the offset-loss does not lead to a functional relevant impingement during walking which needs compensation strategies like increasing external rotation during periods of hip flexion.
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US Center Variability Surrounding Wait List Inactivation Practices After VAD Implantation in Children. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Post-Transplant Outcomes of Patients Supported with the Berlin Heart EXCOR as a Bridge to Transplantation: A Multi-Institutional Study. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Traumatic Carotid Artery Dissection and Pseudoaneurysm Treated with Endovascular Coils and Stent. J Endovasc Ther 2016; 4:339-43. [PMID: 9418195 DOI: 10.1177/152660289700400403] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Purpose: To report a case of post-traumatic internal carotid artery dissection and pseudoaneurysm formation at the C-1 level successfully treated by a percutaneous endovascular technique. Methods and Results: A 20-year-old female presented 72 hours after a motor vehicle accident with incomplete occulosympathetic paresis (Horner's syndrome), carotidynia, and left-sided weakness. Arteriography confirmed the diagnosis of carotid dissection and an associated 1.5-cm × 2.5-cm pseudoaneurysm at the C-1 level. Neuroradiologists embolized the pseudoaneurysm with Guglielmi detachable coils and controlled the dissection with placement of a Wallstent. Conclusions: This report illustrates successful percutaneous endovascular treatment of a carotid dissection and pseudoaneurysm near the base of the skull.
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Iliofemoral Venous Thrombosis Caused by Compression of an Internal Iliac Artery Aneurysm: A Minimally Invasive Treatment. J Endovasc Ther 2016; 5:142-5. [PMID: 9633959 DOI: 10.1177/152660289800500209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose: To report the success of a minimally invasive treatment for phlegmasia cerulea dolens without gangrene caused by compression from an internal iliac artery aneurysm. Methods and Results: An 81-year-old male with a 1-month history of paralysis owing to a hemorrhagic stroke presented with massive edema and skin mottling of the right lower extremity. Imaging confirmed right iliofemoral deep vein thrombosis caused by compression from a 4-cm internal iliac artery aneurysm. With thrombolysis ruled out, a minimally invasive treatment plan was undertaken, featuring percutaneous coil embolization of the aneurysm and surgical venous thrombectomy with proximal arteriovenous fistula creation and iliac vein stent placement. Failure of the coils to embolize the iliac aneurysm prompted the use of an endovascular graft to exclude the aneurysm. The patient's symptoms subsided, and he has a patent right iliofemoral venous system and internal iliac artery at his latest (16-month) follow-up. Conclusions: This case demonstrates that minimally invasive endovascular and open techniques can be combined to achieve an optimum outcome in patients at high risk for standard surgical approaches.
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Abstract
This pre-clinical study was performed to investigate the ability of the haemostatic fleece TachoComb® to prevent adhesion formation following uterine surgery. Thirty rabbits were randomized to receive TachoComb® or no intervention following incision to the right uterine horn. After 14 days, the animals were killed and examined for the presence of adhesion. The lengths of any adhesions were measured and the severity was recorded as a score (0, no adhesion; 1, adhesion easy to lyse; 2, adhesion lysed with traction; 3, adhesion separated by sharp dissection). The incidence of adhesions was 100% in the control group compared with 33% in the TachoComb®-treated animals. The mean adhesion score was significantly lower (0.7 versus 2.2) and the mean adhesion length category was significantly shorter (0.4 versus 2.0) with TachoComb® than in the control group. This study indicates that TachoComb® is a well-tolerated and effective means of preventing adhesion following gynaecological surgery.
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Functional Status of Children Supported on LVADs at Transplant: How Does It Compare to Children on Inotropic Support? J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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EP-1068: Impact of pretreatment primary tumor volume on survival of patient with T4a larynx cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32318-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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SU-E-T-529: Is MFO-IMPT Robust Enough for the Treatment of Head and Neck Tumors? A 2-Year Outcome Analysis Following Proton Therapy On the First 50 Oropharynx Patients at the MD Anderson Cancer Center. Med Phys 2015. [DOI: 10.1118/1.4924891] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Erratum: Decay constants of heavy-light vector mesons from QCD sum rules [Phys. Rev. D88, 014015 (2013)]. Int J Clin Exp Med 2015. [DOI: 10.1103/physrevd.91.099901] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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How Should the Effect of Persantine Be Measured Using Thromboelastography: Correlation and Agreement Between Percent ADP Inhibition and ADP Net G. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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SU-E-QI-05: Denoising Intravoxel Incoherent Motion Magnetic Resonance Images Using Non-Local Mean Technique for Oropharyngeal Cancer Study. Med Phys 2014. [DOI: 10.1118/1.4888985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Erratum: Decay constants of heavy-light vector mesons from QCD sum rules [Phys. Rev. D 88, 014015 (2013)]. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.89.099901] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Correlation of Fc Gamma Receptor (FcγR) IIa and IIIa Polymorphisms With Clinical Outcome in Patients Treated With Cetuximab-Based Chemoradiation in the RTOG 0522 Trial. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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A Multi-institution Pooled Analysis of G-Tube Dependence in Patients With Oropharyngeal Cancer Treated With Definitive IMRT. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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School Re-Integration for Pediatric VADs. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Are Smaller Children Waiting Longer? Trends in Median Waiting Time for Smaller Children Listed for Heart Transplant in the US. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Low Dose Factor Eight Inhibitor Bypassing Activity (FEIBA) for Incessant Bleeding in Pediatric Patients on Mechanical Circulatory Support (MCS). J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.767] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Pediatric Outpatient VAD Experience at Stanford. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Al13Fe4 as a low-cost alternative for palladium in heterogeneous hydrogenation. NATURE MATERIALS 2012; 11:690-3. [PMID: 22683821 DOI: 10.1038/nmat3347] [Citation(s) in RCA: 218] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Accepted: 05/02/2012] [Indexed: 05/06/2023]
Abstract
Replacing noble metals in heterogeneous catalysts by low-cost substitutes has driven scientific and industrial research for more than 100 years. Cheap and ubiquitous iron is especially desirable, because it does not bear potential health risks like, for example, nickel. To purify the ethylene feed for the production of polyethylene, the semi-hydrogenation of acetylene is applied (80 × 10(6) tons per annum; refs 1-3). The presence of small and separated transition-metal atom ensembles (so-called site-isolation), and the suppression of hydride formation are beneficial for the catalytic performance. Iron catalysts necessitate at least 50 bar and 100 °C for the hydrogenation of unsaturated C-C bonds, showing only limited selectivity towards semi-hydrogenation. Recent innovation in catalytic semi-hydrogenation is based on computational screening of substitutional alloys to identify promising metal combinations using scaling functions and the experimental realization of the site-isolation concept employing structurally well-ordered and in situ stable intermetallic compounds of Ga with Pd (refs 15-19). The stability enables a knowledge-based development by assigning the observed catalytic properties to the crystal and electronic structures of the intermetallic compounds. Following this approach, we identified the low-cost and environmentally benign intermetallic compound Al(13)Fe(4) as an active and selective semi-hydrogenation catalyst. This knowledge-based development might prove applicable to a wide range of heterogeneously catalysed reactions.
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807 Outpatient Milrinone Therapy in Young Children with Advanced Heart Failure. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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392 Complement Fixation by C1q vs MFI: Detection of Clinically Relevant Antibodies. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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