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Willson A, Webb J, Wood D, Gurvitch R, Toggweiler S, Binder R, Madden M, Cheung A, Ye J, Leipsic J. 594 Post implantation geometry of the edwards sapien XT valve as assessed by multidetector computed tomography. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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Kim J, Soon J, Cheung A, Lichtenstein S, Wood D, Webb J, Ye J. 665 Value of risk algorithms in predicting early and late operative outcomes in high risk patients undergoing transapical aortic valve implantation. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.553] [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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103
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Ye J, Cheung A, Soon J, Kim J, Wood D, Thompson C, Munt B, Moss R, Carere R, Lichtenstein S, Webb J. 663 Transapical valve-in-valve aortic valve implantation: Follow-up to 4 years. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.551] [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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104
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Bagur R, Webb J, Gurvitch R, Dumont É, Velianou J, Manazzoni J, Toggweiler S, Cheung A, Ye J, Natarajan M, Bainey K, De Larochellière R, Doyle D, Pibarot P, Côté M, Philippon F, Rodés-Cabau J. 664 Incidence and predictive factors of permanent pacemaker implantation following transcatheter aortic valve implantation with a balloon-expandable valve. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.552] [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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105
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Cowan S, Toma M, Kaan A, Ignaszewski A, Cheung A. 544 Long-term survival in patients receiving an implantable microaxial ventricular assist device for cardiogenic shock. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.452] [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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Goss PE, Ingle JN, Ales-Martinez J, Cheung A, Chlebowski RT, Wactawski-Wende J, McTiernan A, Robbins J, Johnson K, Martin L, Winquist E, Sarto G, Garber JE, Fabian CJ, Pujol P, Maunsell E, Farmer P, Gelmon KA, Tu D, Richardson H. Exemestane for primary prevention of breast cancer in postmenopausal women: NCIC CTG MAP.3—A randomized, placebo-controlled clinical trial. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.18_suppl.lba504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
LBA504 Background: Limited efficacy and serious toxicities have limited uptake of tamoxifen or raloxifene as preventatives of breast cancer. Aromatase inhibitors (AIs) prevent contralateral breast cancers more than tamoxifen in adjuvant trials and have fewer serious side effects. This is the first report of an AI used in primary prevention. Methods: NCIC CTG MAP.3 is a randomized trial designed to detect a 65% reduction in annual incidence of invasive breast cancer (IBC) on exemestane (E) versus placebo (P). Eligible postmenopausal women had ≥ one of the following risk factors: Gail score >1.66%, prior ADH, ALH, LCIS or DCIS with mastectomy, age over 60. Health-related and menopause-specific quality of life (QOL) were assessed by SF-36 and MENQOL questionnaires. Results: From 2004-2010, 4,560 women were randomized: age 62.5 yrs (37-90); Gail Score 2.3 % (0.6-21); BMI 28.0 kg/m2 (15.9-65.4). Risk factors included: age >60 yrs (49%); Gail score >1.66 (40%); and prior ADH, ALH, LCIS or DCIS with mastectomy (11%). At median follow-up of 35 months there were 11 IBCs on E and 32 on P (annual incidence 0.19% vs 0.55%; HR= 0.35, 95% CI 0.18-0.70, p = 0.002); ductal (10E/27P), lobular (1E/5P). Most tumors were ER positive (7E/27P); Her2/neu negative (10E/26P); TNM stage T1 (8E/28P), N0 (7E/22P), M0 (11E/30P). E was superior in all subgroups: by Gail score, age, BMI, prior LCIS and DCIS. The annual incidence rate of IBC or DCIS was 0.35% E and 0.77% P (HR=0.47;95% CI 0.27-0.79; p = 0.004) based on 64 IBCs or DCISs (20E/44P). Clinical bone fractures, osteoporosis, hypercholesterolemia or cardiovascular events were equal in both arms. No clinically meaningful differences in QOL were detected. Conclusions: Exemestane significantly reduced invasive and pre-invasive breast cancers in postmenopausal women at increased risk for breast cancer with no serious toxicities. Exemestane should be considered a new option for primary prevention of breast cancer. Supported by the Canadian Cancer Society; Pfizer Inc. PEG supported in part by Avon Foundation.
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Messaed C, Chebaro W, Roberto RBD, Rittore C, Cheung A, Arseneau J, Schneider A, Chen MF, Bernishke K, Surti U, Hoffner L, Sauthier P, Buckett W, Qian J, Lau NM, Bagga R, Engert JC, Coullin P, Touitou I, Slim R. NLRP7 in the spectrum of reproductive wastage: rare non-synonymous variants confer genetic susceptibility to recurrent reproductive wastage. J Med Genet 2011; 48:540-8. [DOI: 10.1136/jmg.2011.089144] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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109
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Goss PE, Ingle JN, Ales-Martinez J, Cheung A, Chlebowski RT, Wactawski-Wende J, McTiernan A, Robbins J, Johnson K, Martin L, Winquist E, Sarto G, Garber JE, Fabian CJ, Pujol P, Maunsell E, Farmer P, Gelmon KA, Tu D, Richardson H. Exemestane for primary prevention of breast cancer in postmenopausal women: NCIC CTG MAP.3—A randomized, placebo-controlled clinical trial. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.lba504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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110
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Cheung A, Altaf F, Lawati A, Bashir J. 454 First Experience with a Novel Percutaneous RVAD: Impella RP. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Meredith A, Matzke L, Samra A, Cheung A, McManus B. 208 Gene and Protein Expression in Myocardium of Heart Failure Patients Following Mechanical Circulatory Assist. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.215] [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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Slim R, Ao A, Surti U, Zhang L, Hoffner L, Arseneau J, Cheung A, Chebaro W, Wischmeijer A. Recurrent triploid and dispermic conceptions in patients with NLRP7 mutations. Placenta 2011; 32:409-12. [PMID: 21421271 DOI: 10.1016/j.placenta.2011.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 02/14/2011] [Accepted: 02/16/2011] [Indexed: 11/18/2022]
Abstract
To understand the mechanisms leading to hydatidiform mole formation in patients with NLRP7 mutations, we used a combination of various approaches to characterize five products of conception, from two patients, shown by flow cytometry to contain non-diploid cells. We demonstrate that four of these conceptions are triploid and two of them originated from fertilization with more than one sperm. We show that three of these triploid conceptions fulfill the histopathological criteria of partial hydatidiform mole and one fulfills the histopathological criteria of spontaneous abortion. Our data demonstrate that some oocytes from one patient with NLRP7 mutations are not able to prevent polyspermic fertilization and highlight the importance of using several approaches to characterize the genetic complexity of molar tissues and reproductive wastage. Altogether, our previous and current data show the association of NLRP7 mutations with several types of hydatidiform moles and with triploid spontaneous abortions.
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Willson A, Leipsic J, Gurvitch R, Toggweiler S, Binder R, Wood D, Ye J, Cheung A, Webb J. Late Structural Integrity of Balloon Expandable Stents used for Transcatheter Aortic Valve Replacement (TAVR): Assessment by Multi Detector Computerised Tomography (MDCT). Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.331] [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]
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Willson A, Webb J, Gurvitch R, Binder R, Toggweiler S, Wood D, Ye J, Cheung A, Leipsic J. Post Implantation Geometry of the Edwards SAPIEN XT Valve as Assessed by Multidetector Computerised Tomography. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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115
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Gurvitch R, Willson A, Rodes-Cabau J, Bagur R, Toggweiler S, Wood D, Cheung A, Ye J, Lee M, Dumont E, Webb J. Transcatheter Aortic Valve Implantation—Multicentre Study Evaluating the Clinical Outcomes of Patients with PARTNER Trial Exclusions. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gurvitch R, Wood DA, Tay EL, Leipsic J, Ye J, Lichtenstein SV, Thompson CR, Carere RG, Wijesinghe N, Nietlispach F, Boone RH, Lauck S, Cheung A, Webb JG. Transcatheter aortic valve implantation: durability of clinical and hemodynamic outcomes beyond 3 years in a large patient cohort. Circulation 2010; 122:1319-27. [PMID: 20837893 DOI: 10.1161/circulationaha.110.948877] [Citation(s) in RCA: 212] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Although short- and medium-term outcomes after transcatheter aortic valve implantation are encouraging, long-term data on valve function and clinical outcomes are limited. METHODS AND RESULTS Consecutive high-risk patients who had been declined as surgical candidates because of comorbidities but who underwent successful transcatheter aortic valve implantation with a balloon-expandable valve between January 2005 and December 2006 and survived past 30 days were assessed. Clinical, echocardiographic, and computed tomographic follow-up examinations were performed. Seventy patients who underwent successful procedures and survived longer than 30 days were evaluated at a minimum follow-up of 3 years. At a median follow-up of 3.7 years (interquartile range 3.4 to 4.3 years), survival was 57%. Survival at 1, 2, and 3 years was 81%, 74%, and 61%, respectively. Freedom from reoperation was 98.5% (1 patient with endocarditis). During this early procedural experience, 11 patients died within 30 days, and 8 procedures were unsuccessful. When these patients were included, overall survival was 51%. Transaortic pressure gradients increased from 10.0 mm Hg (interquartile range 8.0 to 12.0 mm Hg) immediately after the procedure to 12.1 mm Hg (interquartile range 8.6 to 16.0 mm Hg) after 3 years (P=0.03). Bioprosthetic valve area decreased from a mean of 1.7±0.4 cm(2) after the procedure to 1.4±0.3 cm(2) after 3 years (P<0.01). Aortic incompetence after implantation was trivial or mild in 84% of cases and remained unchanged or improved over time. There were no cases of structural valvular deterioration, stent fracture, deformation, or valve migration. CONCLUSIONS Transcatheter aortic valve implantation demonstrates good medium- to long-term durability and preserved hemodynamic function, with no evidence of structural failure. The procedure appears to offer an adequate and lasting resolution of aortic stenosis in selected patients.
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Abstract
Hip pain is a common paediatric presentation and is potentially serious. While hip pain can be attributed to primary hip pathology, the hip area is also a common site for referred pain. This often poses a diagnostic challenge particularly in the young child who may not verbalise the point of pain and may not report an injury. Differential diagnoses for paediatric hip joint pain range from fracture, transient synovitis, septic arthritis with or without osteomyelitis, juvenile idiopathic arthritis (JIA, previously juvenile rheumatoid arthritis JRA), Legg-Calve-Perthes' disease (LCP), slipped capital femoral epiphysis (SCFE) to haemarthrosis in patient with a clotting disorder. Referred pain from abdominal pathology, for example; appendicitis, psoas abscess or haematoma should also be considered. The evaluation and management of hip pain requires a thorough history and physical examination. A radiograph is usually indicated to rule out any bony injury. Septic arthritis is a medical emergency requiring urgent surgical as well as medical treatment. Ultrasound of the hip joint plays a role in helping to differentiate which hips require early intervention and to guide a needle aspiration of joint fluid if indicated. In this article, we aim to review the anatomy of the hip, techniques in ultrasonographic examination and some common pathologies in the paediatric hip.
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Gurvitch R, Wood D, Leipsic J, Tay E, Nietlispach F, Wijesinghe N, Cheung A, Lichtenstein S, Munt B, Webb J. Utility of Multislice Computed Tomography in Predicting the Correct Angiographic Angle for Deployment of Transcatheter Aortic Valves. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.491] [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]
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Gurvitch R, Tay E, Wood D, Leipsic J, Lichtenstein S, Thompson C, Carere R, Wijesinghe N, Nietlispach F, Boone R, Cheung A, Webb J. Transcatheter Aortic Valve Implantation: Durability of Clinical and Haemodynamic Outcomes Beyond Three Years in a Large Patient Cohort. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.1038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tay E, Gurvitch R, Wijesinghe N, Nietlispach F, Wood D, Ye J, Cheung A, Carere R, Lichtenstein S, Thompson C, Webb J. Cerebrovascular Events Following Transcatheter Aortic Valve Replacement—Incidence, Predictors and Timing of Events. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gurvitch R, Tay E, Nietlispach F, Wijesinghe N, Wood D, Cheung A, Thompson C, Ye J, Lichtenstein S, Webb J. Transcatheter Aortic Valve Implantation—Single Centre Outcomes From the First 270 High-Risk Patients. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.1036] [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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Drmanac R, Sparks AB, Callow MJ, Halpern AL, Burns NL, Kermani BG, Carnevali P, Nazarenko I, Nilsen GB, Yeung G, Dahl F, Fernandez A, Staker B, Pant KP, Baccash J, Borcherding AP, Brownley A, Cedeno R, Chen L, Chernikoff D, Cheung A, Chirita R, Curson B, Ebert JC, Hacker CR, Hartlage R, Hauser B, Huang S, Jiang Y, Karpinchyk V, Koenig M, Kong C, Landers T, Le C, Liu J, McBride CE, Morenzoni M, Morey RE, Mutch K, Perazich H, Perry K, Peters BA, Peterson J, Pethiyagoda CL, Pothuraju K, Richter C, Rosenbaum AM, Roy S, Shafto J, Sharanhovich U, Shannon KW, Sheppy CG, Sun M, Thakuria JV, Tran A, Vu D, Zaranek AW, Wu X, Drmanac S, Oliphant AR, Banyai WC, Martin B, Ballinger DG, Church GM, Reid CA. Human Genome Sequencing Using Unchained Base Reads on Self-Assembling DNA Nanoarrays. Science 2009; 327:78-81. [DOI: 10.1126/science.1181498] [Citation(s) in RCA: 962] [Impact Index Per Article: 64.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Schooling CM, Wong LC, Chau J, Cheung A, Ho A, McGhee SM. Cost-effectiveness of influenza vaccination for elderly people living in the community. Hong Kong Med J 2009; 15 Suppl 6:44-47. [PMID: 19801718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
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Potter A, Bezjak A, Levin W, McLean M, Garraway C, Lau M, Zurawel-Balaura L, Cheung A, Ma C, Wong R. 126 FACTORS INFLUENCING DOSE/FRACTIONATION CHOICES FOR PALLIATION OF BONE METASTASES. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)72513-6] [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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Wali R, Iyengar M, Chartyan D, Lukas M, Cooper C, Cheung A. A Meta-Analysis of Two Double-Blind, Placebo Controlled, Randomized Trials to Evaluate the Efficacy and Safety of Carvedilol Treatment in Non-Dialysis Dependent Chronic Kidney Disease Patients with Symptomatic or Asymptomatic Systolic Heart Failure. J Card Fail 2009. [DOI: 10.1016/j.cardfail.2009.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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