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Batra S, Teo K, Vennarini S, Lin L, Freedman G. An Analysis of 3-Dimensional Breast Motion During Normal Respiration: What CTV to PTV Margin Is Needed? Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.509] [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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Guo J, Li W, Cheng XR, Wang Y, Gu HQ, Teo K, Liu LS, Yusuf S. Physical activity levels, sport activities and risk of acute myocardial infarction: results of the INTERHEART study in China. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Leong DP, O'Donnell MJ, Teo K, Smyth A, Joseph P, Gao P, Bohm MJ, Yusuf S. Resting heart rate and decline in cognitive function: observations from the ONTARGET/TRANSCEND studies. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p2737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fernandes AT, Whaley JT, Teo K, Plastaras JP, Metz JM, Perini RF, Pryma DA, Apisarnthanarax S. Predicting outcomes in locally advanced rectal cancer using pretreatment FDG-PET imaging. J Clin Oncol 2013. [DOI: 10.1200/jco.2013.31.4_suppl.495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
495 Background: FDG-PET/CT imaging has been shown to have clinical utility in the management of rectal cancers. The purpose of this study was to investigate multiple FDG-PET/CT parameters to predict for outcome after neoadjuvant chemoradiation (CRT) in patients (pts) with locally advanced rectal adenocarcinoma. Methods: We retrospectively evaluated pts with locally-advanced (T2-4, N0-2, M0) rectal adenocarcinoma treated with neoadjuvant CRT who received FDG-PET/CT scans for radiation therapy planning. We evaluated the impact of SUVmax and metabolic tumor volume (MTV, determined by using PET Edge MimVista), as well as dual-time point PET parameters of retention index (RI, difference in SUVmax between the two PET scans) and RI/time. Endpoints of pathologic complete response (pCR), tumor grade, margin status and pathologic downstaging were assessed using t-test, ANOVA or non-parametric analysis when appropriate. Progression-free survival (PFS) and overall survival (OS) were assessed using Kaplan Meier estimates. Results: Of the 28 consecutive pts with FDG-PET/CT planning scans identified, 25 pts underwent surgical resection. All patients received a 5-FU based concurrent chemotherapy regimen with RT (median RT dose: 50.4 Gy). Median follow-up was 21 months. The median MTV was 45 cc. Compared to pts with a MTV>45 cc, pts with a MTV <45 cc had improved PFS (2-yr PFS: 86% vs. 60%, p=0.04) and improved OS (2-yr OS: 100% vs. 51%, p=0.01). The correlation between MTV and T-stage was not statistically significant (23% of pts with MTV>45 had T4 tumors vs. 0% of pts with MTV<45, p=0.17). MTV did not correlate with the other endpoints (pCR, tumor grade, margin status, pathologic downstaging). SUVmax did not correlate with any of the identified endpoints. Of the patients with dual-time point PET/CT scans (N=19), RI and RI/time did not correlate with any of the identified endpoints. Conclusions: Pretreatment MTV correlates with PFS and OS in patients with locally advanced rectal cancer treated with neoadjuvant chemoradiation. For pts with large MTVs, more aggressive treatment approaches should be considered. Dual-time point FDG-PET imaging does not appear to add clinical value in this patient population.
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McDonald SD, Yusuf S, Walsh MW, Lonn E, Teo K, Anand SS, Pogue J, Islam S, Devereaux PJ, Gerstein HC. Increased cardiovascular risk after pre-eclampsia in women with dysglycaemia. Diabet Med 2013; 30:e1-7. [PMID: 23050859 DOI: 10.1111/dme.12033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 08/29/2012] [Accepted: 10/05/2012] [Indexed: 11/30/2022]
Abstract
AIMS Compared with women with uncomplicated pregnancies, women with a history of pre-eclampsia have two to five times the risk of cardiovascular disease. It is not known whether this risk is related to albuminuria, a known cardiovascular risk factor that is part of the definition of pre-eclampsia and that often persists after delivery. Our objective was to determine if the high risk of cardiovascular disease in women with pre-eclampsia is accounted for by known cardiovascular risk factors including albuminuria. METHODS We performed a cross-sectional analysis of 4080 dysglycaemic women enrolled in a large randomized controlled trial who provided an obstetric history and had at least one delivery. Blood pressure, height, weight, waist circumference and hip circumference were measured. An oral glucose tolerance test, lipids, an electrocardiogram and an albumin/creatinine ratio from a first morning urine sample were obtained. RESULTS There were 3613 women with no history of pre-eclampsia during their pregnancies, 108 with severe pre-eclampsia and 359 with non-severe pre-eclampsia. Women with a history of severe pre-eclampsia had higher rates of previous cardiovascular disease than women with non-severe pre-eclampsia or women without pre-eclampsia (87, 72 and 72%, P = 0.0019). The high risk of previous cardiovascular disease in women with a history of severe pre-eclampsia (odds ratio 2.67, 95% CI 1.52-4.70) persisted after adjustment for albuminuria (odds ratio 2.74, 95% CI 1.55-4.83) and also after adjusting for other covariates including albuminuria (odds ratio 3.03, 95% CI 1.69-5.44). CONCLUSION Even after accounting for cardiovascular risk factors including albuminuria, a history of severe pre-eclampsia is independently associated with a threefold higher risk of cardiovascular disease.
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Lee C, Hunter K, Vineberg K, Eisbruch A, Teo K, Kirk M, Lin A. Non-intensity Modulated Proton Versus Intensity Modulated Photon Planning for Complex Head-and-Neck Tumors. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rey F, Chang C, Mesina C, Dixit N, Teo K, Lin L. Dosimetric Impact of Daily MRI Guided Adaptive HDR Interstitial Brachytherapy for GYN Cancers. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1211] [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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Swisher-McClure S, Chang C, Teo K, Lin A. Postoperative Radiation Therapy (RT) for Salivary Gland Carcinoma: A Comparison of Intensity Modulated Radiation Therapy (IMRT) and Proton Treatment Techniques. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2243] [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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Yew A, Gasevic D, Teo K, Yusuf S, Lear S. 023 Gender Differences in the Association Between Neighbourhood Environment Characteristics With Being Overweight. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.036] [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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O'Donnell M, Teo K, Gao P, Anderson C, Sleight P, Dans A, Marzona I, Bosch J, Probstfield J, Yusuf S. Cognitive impairment and risk of cardiovascular events and mortality. Eur Heart J 2012; 33:1777-86. [DOI: 10.1093/eurheartj/ehs053] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rey F, Chang C, Mesina C, Dixit N, Teo K, Lin L. PO-309 DOSIMETRIC IMPACT OF INTERFRACTION CATHETER MOVEMENT IN MRI CT GUIDED HDR INTERSTITIAL BRACHYTHERAPY FOR GYN CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72275-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cox V, Richardson J, Nelson A, Cunnington M, Wong D, Bertaso A, Teo K, Worthley M, Worthley S. Cardiac Magnetic Resonance Imaging Assessment of Coronary Sinus Morphology in Atrial Septal Defect Patients. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.469] [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]
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Cox V, Richardson J, Nelson A, Cunnington M, Wong D, Bertaso A, Teo K, Worthley M, Worthley S. Cardiac Magnetic Resonance Derived Relative Atrial Index Accurately Identifies Secundum Atrial Septal Defects. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Richardson J, Nelson A, Bertaso A, Wong D, Cunnington M, Azarisman S, Chua H, Baillie T, Glenie T, Koschade B, Williams K, Teo K, Worthley M, Worthley S. Cardiac Magnetic Resonance-Derived Coronary Sinus Flow Reserve Can Accurately Determine Global Myocardial Perfusion. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Wong D, Leong D, Weightman M, Leung M, Richardson J, Bertaso A, Teo K, Meredith I, Worthley M, Worthley S. Myocardial Grid-Tagging is a Superior Predictor of Myocardial Viability Than Late Gadolinium-Enhanced Magnetic Resonance Imaging Post STEMI. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Richardson J, Cunnington M, Wong D, Bertaso A, Nelson A, Azarisman S, Chua H, Williams K, Koschade B, Worthely M, Teo K, Worthley S. Cardiac Magnetic Resonance Imaging After Transcatheter Aortic Valve Implantation. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.468] [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]
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Richardson J, Bertaso A, Koschade B, Wong D, Williams K, Frost L, Carbone A, Paton S, Nelson A, Psaltis P, Worthley M, Teo K, Gronthos S, Zannettino A, Worthley S. Cardiac Magnetic Resonance, Transthoracic and Transoesophageal Echocardiography: A Comparison of In Vivo Ventricular Function Assessment in Rats. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Weber M, Schueler R, Momcilovic D, Sinning J, Ghanem A, Werner N, Nickenig G, Hammerstingl C, Sun B, Hwang K, Cho M, Lee W, Choi S, Kim YG, Kim DH, Song JM, Kang DH, Song JK, Capoulade R, Clavel M, Dumesnil J, Chan K, Tam J, Teo K, Cote N, Mathieu P, Despres J, Pibarot P, Macron L, Lim P, Bensaid A, Nahum J, Attias D, Messika Zeitoun D, Dubois Rande J, Gueret P, Monin J, Le Tourneau T, Lardeux A, Garcia A, Kyndt F, Merot J, Hagege A, Levine R, Schott J, La Marec H, Probst V, Niki K, Sugawara M, Takamisawa I, Watanabe H, Sumiyoshi T, Hosoda S, Takanashi S, Veronesi F, Caiani E, Fusini L, Tamborini G, Sugeng L, Alamanni F, Pepi M, Lang R, Gripari P, Muratori M, Fusini L, Ajmone Marsan N, Hooi Ewe S, Arnold C, Van Der Kley F, Tamborini G, Pepi M, Bax J, Adda J, Mielot C, Cransac F, Zirphile X, Reant P, Sportouch-Dukhan C, Lafitte S, Donal E, Lancellotti P, Habib G, Akbar Ali O, Chapman M, Nguyen T, Chirkov Y, Horowitz J. Moderated Poster Sessions 1: Valvular heart disease: from bench to bedside * Thursday 8 December 2011, 08:30-12:30 * Location: Moderated Poster Area. EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY 2011. [DOI: 10.1093/ejechocard/jer205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Chang C, Welliver M, Altschuler M, Teo K, Zhu T. Dosimetric Evaluation of MRI-based Treatment Planning for Lung Volumetric Modulated Arc Therapy VMAT Plans. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1448] [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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Welliver M, Teo K, Trister A, Lin L, Pryma D, Lin A, Rengan R. Impact of a Novel Tumor Heterogeneity Index Calculation from FDG-PET/CT Imaging For Primary Lung Carcinoma on Predicting Potential for Tumor Spread. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Corradetti M, Teo K, Anderson N, Bonnar Millar L, Barlow C, Rengan R. A Moving Target: Image Guidance for Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1527] [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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Grover S, Lin L, Teo K, Zou J, Dolney D, Prosnitz R. Proton Therapy is Dosimetrically Superior to Photon Therapy for Irradiation of the Left Breast and Regional Nodes. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1724] [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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Wong D, Puri R, Leung M, Liew G, Das R, Teo K, Meredith I, Worthley M, Worthley S. Intracoronary ECG is Predictor of Hyperaemic Blood Flow and Myocardial Injury. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.325] [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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Aloia C, Gasevic D, Yusuf S, Teo K, Chockalingam A, Patro B, Kumar R, Lear S. Differences in fast food consumption between individuals of high and low socio-economic status in Chandigarh, India. Can J Diabetes 2011. [DOI: 10.1016/s1499-2671(11)52071-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Richardson J, Bertaso A, Wong D, Nelson A, Tayeb H, Carbone A, Dundon B, Molaee P, Williams K, Brown M, Worthley M, Teo K, Worthley S. Adenosine Stress Perfusion CMR Accurately Identifies the Target Vessel for Revascularisation. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.391] [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]
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Weightman M, Wong D, Leung M, Das R, Williams K, Bertaso A, Richardson J, Teo K, Meredith I, Worthley M, Worthley S. Diastolic Dysfunction as Assessed with Grid-Tagged Cardiac MRI Correlates with Microvascular Dysfunction and Markers of Left Ventricular Remodelling Following ST-Segment Elevation Myocardial Infarction. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Koschade B, Young J, Richardson J, Bertaso A, Cox V, Wong D, Cunnington M, Nelson A, Tayeb H, Williams K, Brown M, Worthley M, Teo K, Worthley S. Safety of Adenosine Stress Perfusion Cardiac Magnetic Resonance. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Young J, Koschade B, Richardson J, Bertaso A, Cox V, Wong D, Cunnington M, Nelson A, Tayeb H, Maia M, Williams K, Worthley M, Teo K, Worthley S. Is Standard Dose Adenosine Infusion Sufficient to Establish Maximal Hyperaemia During Adenosine Stress Perfusion Cardiac Magnetic Resonance? Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.443] [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]
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Bertaso A, Richardson J, Nelson A, Wong D, Tayeb H, Carbone A, Dundon B, Molaee P, Williams K, Brown M, Worthley M, Teo K, Worthley S. Prognostic Value of Adenosine Stress Perfusion Cardiac Magnetic Resonance with Late Gadolinium Enhancement in Intermediate Cardiovascular Risk Patients. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.463] [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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Wong D, Leung M, Das R, Bertaso A, Richardson J, Williams K, Puri R, Meredith I, Teo K, Worthley S. Late Microvascular Obstruction is the Best Predictor of Left Ventricular Remodelling Following ST Elevation MI: A Comparison between CMR and Angiography Derived Myocardial Blood Flow. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.444] [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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Williams K, Richardson J, Bertaso A, Wong D, Young J, Koschade B, Cunnington M, Nelson A, Tayeb H, Cox V, Molaee P, Brown M, Worthley M, Teo K, Worthley S. Cardiac Magnetic Resonance: Clinical Experience in a High Volume Centre. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.403] [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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McGorrian C, Yusuf S, Islam S, Jung H, Rangarajan S, Avezum A, Prabhakaran D, Almahmeed W, Rumboldt Z, Budaj A, Dans AL, Gerstein HC, Teo K, Anand SS. Estimating modifiable coronary heart disease risk in multiple regions of the world: the INTERHEART Modifiable Risk Score. Eur Heart J 2010; 32:581-9. [DOI: 10.1093/eurheartj/ehq448] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Lin A, Teo K, Rengan R. A Comparative Study of PET-CT Fusion versus PET-CT Simulation for Target Delineation in Non-small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Molaee P, Teo K, Leong D, Kuklik P, Wong D, Sanders P, Worthley S. Cardiac Structural and Functional Abnormalities in Patients With “Lone” Atrial Fibrillation. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.898] [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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Wong D, Tayeb H, Leung M, Das R, Bailie T, Teo K, Worthley M, Sanders P, Worthley S. Novel Contrast Enhanced Cardiac MRI Parameters Correlate with Surrogates of Ventricular Arrhythmia Post-PPCI. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.463] [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]
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Wong D, Leung M, Das R, Liew G, Dundon B, Worthley M, Teo K, Chew D, Meredith I, Worthley S. Intracoronary ECG During Primary Percutaneous Coronary Intervention (PPCI) For ST Elevation MI Predicts Microvascular Obstruction And Infarct Size. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.989] [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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Molaee P, Teo K, Leong D, Kuklik P, Wong D, Williams K, Sanders P, Worthley S. Accuracy of the Biplane Area-Length Method For Assessing Left Atrial Volume in Subjects With Normal and Dilated Left Atria: A Comparative Study Using Cardiac Magnetic Resonance Imaging. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.392] [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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Bohm M, Mahfoud F, Werner C, Teo K, Baumhakel M. Cardiovascular protection: a breakthrough for high-risk patients. Eur Heart J Suppl 2009. [DOI: 10.1093/eurheartj/sup024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yusuf S, Pais P, Afzal R, Xavier D, Teo K, Eikelboom J, Sigamani A, Mohan V, Gupta R, Thomas N. Effects of a polypill (Polycap) on risk factors in middle-aged individuals without cardiovascular disease (TIPS): a phase II, double-blind, randomised trial. Lancet 2009; 373:1341-51. [PMID: 19339045 DOI: 10.1016/s0140-6736(09)60611-5] [Citation(s) in RCA: 338] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND The combination of three blood-pressure-lowering drugs at low doses, with a statin, aspirin, and folic acid (the polypill), could reduce cardiovascular events by more than 80% in healthy individuals. We examined the effect of the Polycap on blood pressure, lipids, heart rate, and urinary thromboxane B2, and assessed its tolerability. METHODS In a double-blind trial in 50 centres in India, 2053 individuals without cardiovascular disease, aged 45-80 years, and with one risk factor were randomly assigned, by a central secure website, to the Polycap (n=412) consisting of low doses of thiazide (12.5 mg), atenolol (50 mg), ramipril (5 mg), simvastatin (20 mg), and aspirin (100 mg) per day, or to eight other groups, each with about 200 individuals, of aspirin alone, simvastatin alone, hydrochlorthiazide alone, three combinations of the two blood-pressure-lowering drugs, three blood-pressure-lowering drugs alone, or three blood-pressure-lowering drugs plus aspirin. The primary outcomes were LDL for the effect of lipids, blood pressure for antihypertensive drugs, heart rate for the effects of atenolol, urinary 11-dehydrothromboxane B2 for the antiplatelet effects of aspirin, and rates of discontinuation of drugs for safety. Analysis was by intention to treat. This study is registered with ClinicalTrials.gov, number NCT00443794. FINDINGS Compared with groups not receiving blood-pressure-lowering drugs, the Polycap reduced systolic blood pressure by 7.4 mm Hg (95% CI 6.1-8.1) and diastolic blood pressure by 5.6 mm Hg (4.7-6.4), which was similar when three blood-pressure-lowering drugs were used, with or without aspirin. Reductions in blood pressure increased with the number of drugs used (2.2/1.3 mm Hg with one drug, 4.7/3.6 mm Hg with two drugs, and 6.3/4.5 mm Hg with three drugs). Polycap reduced LDL cholesterol by 0.70 mmol/L (95% CI 0.62-0.78), which was less than that with simvastatin alone (0.83 mmol/L, 0.72-0.93; p=0.04); both reductions were greater than for groups without simvastatin (p<0.0001). The reductions in heart rate with Polycap and other groups using atenolol were similar (7.0 beats per min), and both were significantly greater than that in groups without atenolol (p<0.0001). The reductions in 11-dehydrothromboxane B2 were similar with the Polycap (283.1 ng/mmol creatinine, 95% CI 229.1-337.0) compared with the three blood-pressure-lowering drugs plus aspirin (350.0 ng/mmol creatinine, 294.6-404.0), and aspirin alone (348.8 ng/mmol creatinine, 277.6-419.9) compared with groups without aspirin. Tolerability of the Polycap was similar to that of other treatments, with no evidence of increasing intolerability with increasing number of active components in one pill. INTERPRETATION This Polycap formulation could be conveniently used to reduce multiple risk factors and cardiovascular risk.
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Liew G, Teo K, Thomas A, Anderson J, Fitridge R, Worthley S. MRI and Histopathological Assessment of Embolic Debris Captured during Carotid Artery Intervention. Heart Lung Circ 2009. [DOI: 10.1016/j.hlc.2009.05.082] [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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Yusuf S, Teo K, Anderson C, Pogue J, Dyal L, Copland I, Schumacher H, Dagenais G, Sleight P. Effects of the angiotensin-receptor blocker telmisartan on cardiovascular events in high-risk patients intolerant to angiotensin-converting enzyme inhibitors: a randomised controlled trial. Lancet 2008; 372:1174-83. [PMID: 18757085 DOI: 10.1016/s0140-6736(08)61242-8] [Citation(s) in RCA: 634] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Angiotensin-converting enzyme (ACE) inhibitors reduce major cardiovascular events, but are not tolerated by about 20% of patients. We therefore assessed whether the angiotensin-receptor blocker telmisartan would be effective in patients intolerant to ACE inhibitors with cardiovascular disease or diabetes with end-organ damage. METHODS After a 3-week run-in period, 5926 patients, many of whom were receiving concomitant proven therapies, were randomised to receive telmisartan 80 mg/day (n=2954) or placebo (n=2972) by use of a central automated randomisation system. Randomisation was stratified by hospital. The primary outcome was the composite of cardiovascular death, myocardial infarction, stroke, or hospitalisation for heart failure. Analyses were done by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT00153101. FINDINGS The median duration of follow-up was 56 (IQR 51-64) months. All randomised patients were included in the efficacy analyses. Mean blood pressure was lower in the telmisartan group than in the placebo group throughout the study (weighted mean difference between groups 4.0/2.2 [SD 19.6/12.0] mm Hg). 465 (15.7%) patients experienced the primary outcome in the telmisartan group compared with 504 (17.0%) in the placebo group (hazard ratio 0.92, 95% CI 0.81-1.05, p=0.216). One of the secondary outcomes-a composite of cardiovascular death, myocardial infarction, or stroke-occurred in 384 (13.0%) patients on telmisartan compared with 440 (14.8%) on placebo (0.87, 0.76-1.00, p=0.048 unadjusted; p=0.068 after adjustment for multiplicity of comparisons and overlap with primary outcome). 894 (30.3%) patients receiving telmisartan were hospitalised for a cardiovascular reason, compared with 980 (33.0%) on placebo (relative risk 0.92, 95% CI 0.85-0.99; p=0.025). Fewer patients permanently discontinued study medication in the telmisartan group than in the placebo group (639 [21.6%] vs 705 [23.8%]; p=0.055); the most common reason for permanent discontinuation was hypotensive symptoms (29 [0.98%] in the telmisartan group vs 16 [0.54%] in the placebo group). INTERPRETATION Telmisartan was well tolerated in patients unable to tolerate ACE inhibitors. Although the drug had no significant effect on the primary outcome of this study, which included hospitalisations for heart failure, it modestly reduced the risk of the composite outcome of cardiovascular death, myocardial infarction, or stroke. FUNDING Boehringer Ingelheim.
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Dagenais GR, Gerstein HC, Holman R, Budaj A, Escalante A, Hedner T, Keltai M, Lonn E, McFarlane S, McQueen M, Teo K, Sheridan P, Bosch J, Pogue J, Yusuf S. Effects of ramipril and rosiglitazone on cardiovascular and renal outcomes in people with impaired glucose tolerance or impaired fasting glucose: results of the Diabetes REduction Assessment with ramipril and rosiglitazone Medication (DREAM) trial. Diabetes Care 2008; 31:1007-14. [PMID: 18268075 DOI: 10.2337/dc07-1868] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Impaired glucose tolerance (IGT) and/or impaired fasting glucose (IFG) are risk factors for diabetes, cardiovascular disease (CVD), and kidney disease. We determined the effects of ramipril and rosiglitazone on combined and individual CVD and renal outcomes in people with IGT and/or IFG in the Diabetes REduction Assessment With ramipril and rosiglitazone Medication (DREAM) trial. RESEARCH DESIGN AND METHODS A total of 5,269 people aged >or=30 years, with IGT and/or IFG without known CVD or renal insufficiency, were randomized to 15 mg/day ramipril versus placebo and 8 mg/day rosiglitazone versus placebo. A composite cardiorenal outcome and its CVD and renal components were assessed during the 3-year follow-up. RESULTS Compared with placebo, neither ramipril (15.7% [412 of 2,623] vs. 16.0% [424 of 2,646]; hazard ratio [HR] 0.98 [95% CI 0.84-1.13]; P = 0.75) nor rosiglitazone (15.0% [394 of 2,635] vs. 16.8% [442 of 2,634]; 0.87 [0.75-1.01]; P = 0.07) reduced the risk of the cardiorenal composite outcome. Ramipril had no impact on the CVD and renal components. Rosiglitazone increased heart failure (0.53 vs. 0.08%; HR 7.04 [95% CI 1.60-31.0]; P = 0.01) but reduced the risk of the renal component (0.80 [0.68-0.93]; P = 0.005); prevention of diabetes was independently associated with prevention of the renal component (P < 0.001). CONCLUSIONS Ramipril did not alter the cardiorenal outcome or its components. Rosiglitazone, which reduced diabetes, also reduced the development of renal disease but not the cardiorenal outcome and increased the risk of heart failure.
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Gillis A, Hwang A, Teo K, Bacharach S, Bucci M, Millender L, Schechter N, Quivey J, Franc B, Xia P. PET-CT for Head and Neck IMRT Planning: Target Delineation and Dose Escalation. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1636] [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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Held C, Gerstein HC, Yusuf S, Zhao F, Hilbrich L, Anderson C, Sleight P, Teo K. Glucose levels predict hospitalization for congestive heart failure in patients at high cardiovascular risk. Circulation 2007; 115:1371-5. [PMID: 17339550 DOI: 10.1161/circulationaha.106.661405] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Patients with diabetes mellitus (DM) are at high risk of developing congestive heart failure (CHF). However, the relationships between glucose levels and CHF in people with or without a history of DM have not been well characterized. METHODS AND RESULTS We evaluated the associations between fasting plasma glucose and risk of hospitalization for CHF during follow-up in patients at high cardiovascular risk and without CHF enrolled in a large-scale clinical trials program. Baseline fasting plasma glucose levels were assessed in 31,546 high-risk subjects with > or = 1 coronary, peripheral, or cerebrovascular disease or DM with end-organ damage who are participating in 2 ongoing parallel trials evaluating the effects of telmisartan, ramipril, or their combination (Ongoing Telmisartan Alone and in Combination With Ramipril Global Endpoint Trial [ONTARGET]; n=25,620) and the effects of telmisartan against placebo in angiotensin-converting enzyme-intolerant patients (Telmisartan Randomized Assessment Study in ACE Intolerant Subjects With Cardiovascular Disease [TRANSCEND]; n=5926). Interim analyses blinded for randomized treatment were performed to compare baseline fasting plasma glucose with the adjusted CHF event rate at a mean follow-up of 886 days. Multivariable Cox regression models were performed, and associations were reported as hazard ratios and 95% confidence intervals. Among all subjects (mean age, 67 years; 69% men), of whom 11,708 (37%) had known DM and 1006 (3.2%) had newly diagnosed DM at baseline, 668 patients were hospitalized for CHF during follow-up. After adjustment for age and sex, a 1-mmol/L-higher fasting plasma glucose was associated with a 1.10-fold-increased risk of CHF hospitalization (95% confidence interval, 1.08 to 1.12; P<0.0001). The association persisted after adjustment for age, sex, smoking, previous myocardial infarction, hypertension, waist-to-hip ratio, creatinine, DM, and use of aspirin, beta-blockers, or statins (hazard ratio, 1.05; 95% confidence interval, 1.02 to 1.08; P<0.001). CONCLUSIONS Fasting plasma glucose is an independent predictor of hospitalization for CHF in high-risk subjects. These data provide theoretical support for potential direct beneficial effects of glucose lowering in reducing the risk of CHF and suggests the need for specific studies targeted at this issue.
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Liew G, Hammett C, Dundon B, Teo K, Worthley M, Nicholls S, Zaman A, Worthley S. Multi-Detector Computed Tomography (MDCT) and Magnetic Resonance Imaging (MRI) Non-Invasively Quantifies Saphenous Vein Graft Atherosclerotic Plaque: A Comparison with Intravascular Ultrasound (IVUS). Heart Lung Circ 2007. [DOI: 10.1016/j.hlc.2007.06.117] [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]
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Liu P, Arnold JM, Belenkie I, Demers C, Dorian P, Gianetti N, Haddad H, Howlett J, Ignazewski A, Jong P, McKelvie R, Moe G, Parker JD, Rao V, Rouleau JL, Teo K, Tsuyuki R, White M, Huckel V, Issac D, Johnstone D, LeBlanc MH, Lee H, Newton G, Niznick J, Ross H, Roth S, Roy D, Smith S, Sussex B, Yusuf S. The 2002/3 Canadian Cardiovascular Society consensus guideline update for the diagnosis and management of heart failure. Can J Cardiol 2003; 19:347-56. [PMID: 12704478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
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Liu P, Arnold M, Belenkie I, Howlett J, Huckell V, Ignazewski A, LeBlanc MH, McKelvie R, Niznick J, Parker JD, Rao V, Ross H, Roy D, Smith S, Sussex B, Teo K, Tsuyuki R, White M, Beanlands D, Bernstein V, Davies R, Issac D, Johnstone D, Lee H, Moe G, Newton G, Pflugfelder P, Roth S, Rouleau J, Yusuf S. The 2001 Canadian Cardiovascular Society consensus guideline update for the management and prevention of heart failure. Can J Cardiol 2001; 17 Suppl E:5E-25E. [PMID: 11773943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
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Lonn E, Yusuf S, Dzavik V, Doris C, Yi Q, Smith S, Moore-Cox A, Bosch J, Riley W, Teo K. Effects of ramipril and vitamin E on atherosclerosis: the study to evaluate carotid ultrasound changes in patients treated with ramipril and vitamin E (SECURE). Circulation 2001; 103:919-25. [PMID: 11181464 DOI: 10.1161/01.cir.103.7.919] [Citation(s) in RCA: 492] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Activation of the renin-angiotensin-aldosterone system and oxidative modification of LDL cholesterol play important roles in atherosclerosis. The Study to Evaluate Carotid Ultrasound changes in patients treated with Ramipril and vitamin E (SECURE), a substudy of the Heart Outcomes Prevention Evaluation (HOPE) trial, was a prospective, double-blind, 3x2 factorial design trial that evaluated the effects of long-term treatment with the angiotensin-converting enzyme inhibitor ramipril and vitamin E on atherosclerosis progression in high-risk patients. METHODS AND RESULTS A total of 732 patients >/=55 years of age who had vascular disease or diabetes and at least one other risk factor and who did not have heart failure or a low left ventricular ejection fraction were randomly assigned to receive ramipril 2.5 mg/d or 10 mg/d and vitamin E (RRR-alpha-tocopheryl acetate) 400 IU/d or their matching placebos. Average follow-up was 4.5 years. Atherosclerosis progression was evaluated by B-mode carotid ultrasound. The progression slope of the mean maximum carotid intimal medial thickness was 0.0217 mm/year in the placebo group, 0.0180 mm/year in the ramipril 2.5 mg/d group, and 0.0137 mm/year in the ramipril 10 mg/d group (P=0.033). There were no differences in atherosclerosis progression rates between patients on vitamin E and those on placebo. CONCLUSIONS Long-term treatment with ramipril had a beneficial effect on atherosclerosis progression. Vitamin E had a neutral effect on atherosclerosis progression.
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Haykowsky M, Taylor D, Teo K, Quinney A, Humen D. Left ventricular wall stress during leg-press exercise performed with a brief Valsalva maneuver. Chest 2001; 119:150-4. [PMID: 11157597 DOI: 10.1378/chest.119.1.150] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
STUDY OBJECTIVES To assess the effects of leg-press (LP) exercise performed with a brief (2 to 3 s) Valsalva maneuver on left ventricular (LV) systolic function and LV wall stress in five healthy men (mean +/- SD age, 27.6 +/- 2.9 years). METHODS AND MEASUREMENTS Subjects performed submaximal (80% one repetition maximum [1RM], 337.9 +/- 109.1 kg; 95% 1RM, 400.6 +/- 129.8 kg) and maximal LP exercise (420 +/- 118.6 kg) during which central arterial pressure, intrathoracic pressure, and two-dimensional echocardiographic analysis of LV systolic function and LV wall stress were measured. RESULTS Compared with baseline, LP exercise resulted in an increase in intrathoracic pressure (baseline, 1.7 +/- 2.9 mm Hg; 80% 1RM, 111.7 +/- 20.2 mm Hg; 95% 1RM, 112.2 +/- 21.1 mm Hg; 100% 1RM, 111.0 +/- 21.3 mm Hg; p < 0.05) and LV end-systolic pressure (baseline, 120.0 +/- 13.2 mm Hg; 80% 1RM, 251.6 +/- 15.3 mm Hg; 95% 1RM, 255.3 +/- 12.2 mm Hg; 100% 1RM, 242.8 +/- 16.5 mm Hg; p < 0.05) with no changes in LV end-systolic transmural pressure (baseline, 118.3 +/- 12.6 mm Hg; 80% 1RM, 140.0 +/- 6.1 mm Hg; 95% 1RM, 143.1 +/- 16.1 mm Hg; 100% 1RM, 131.8 +/- 29.7 mm Hg; p > 0.05), LV end-systolic wall stress (baseline, 91.7 +/- 20.2 kilodyne/cm(2); 80% 1RM, 78.0 +/- 24.4 kilodyne/cm(2); 95% 1RM, 81.4 +/- 25.3 kilodyne/cm(2); 100% 1RM, 85.9 +/- 20.1 kilodyne/cm(2); p > 0.05), or LV fractional area change (baseline, 0.48 +/- 0.03; 80% 1RM, 0.52 +/- 0.11; 95% 1RM, 0.53 +/- 0.06; 100% 1RM, 0.52 +/- 0.05; p > 0.05). CONCLUSION LP exercise performed with a brief Valsalva maneuver is not associated with an alteration in LV wall stress or LV systolic function in healthy young men.
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Cairns J, Kerr C, Teo K. Antiarrhythmic therapy for the prevention of sudden cardiac death. Can J Cardiol 2000; 16 Suppl C:29C-33C. [PMID: 10887276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
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