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QT hysteresis in long-QT syndrome children with exercise testing

Chinese Medical Journal 2007年第3期120卷 179-182页

作者： GAO Dong-sheng FANG Wei-yi Christine Chiu-Man Joel Kirsh gil gross Robert M. Hamilton Department of Cardiology Shanghai Chest Hospital Shanghai200030 China Department of Cardiology Hospital for Sick Children Universityof Toronto Ontario M5G 1X8 Canada

Background Congenital long QT syndrome （LQTS） is an inherited ion channel disorder resulting in abnormal cardiac repolarization that can cause syncope and sudden death associated with a prolonged rate-corrected QT interval and polymorphic ventricular tachycardia. Several studies in adults showed that LQTS patients have altered QT adaptation to heart rate changes compared with normal subjects which forming a ＂hysteresis loop＂ in the QT-circle length plot. This study was to observe the QT interval changing during exercise testing in children long QT syndrome （LQTS） patients, explore the new diagnosis methods of LQTS. Methods The subjects were divided into 3 groups according to 1993 LQTS diagnostic criteria. Group 1： LQTS group （n=17） who scored 〉 or = 4 points indicating definite LQTS. Group 2： Middle group （n=16）, patients who have prolonged QT interval but scored 1.5 to 3.5. Group 3： Normal control group （n=18）. The average age of all study population is （12.3±5.8） years. No case had beta-adrenergic antagonists administration before exercise testing. All subjects were underwent tread mill exercise testing and electrocardiograph in whole exercise testing and recovery were recorded. QT and heart rate changing during whole exercise testing period were recorded. /kQT, the QT interval at 1, 2, 4, 6 minutes into recovery subtract from the QT interval at a similar heart rate during exercise, were calculated. Results In all three groups, QT intervals were shortening with the increasing of heart rate, but QTc had no significant change. ΔQT at 1 minute （（45±11） ms）, 2 minutes （（37±15） ms）, 4 minutes （（23±12） ms） into recovery in LQTS group were significantly greater than that of the other two groups （P〈0.05, P〈0.01, P〈0.01, respectively）. There was no ΔQT significant difference between middle group and normal control group at recovery time. During the recovery phase in LQTS group, the QT interval remained shortened despite a decelerating heart rate, forming a hysteresis ＂lo

关键词： long QT syndrome QT hysteresis exercise testing children

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Prevalence and predictors of urinary tract infections among children with cerebral palsy in Makurdi, Nigeria

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Open Journal of Pediatrics 2013年第4期3卷 350-357页

作者： Emmanuel Adémólá Anígilájé Terkaa Terrumun Bitto Department of Paediatrics Benue State University Makurdi Nigeria Department of Paediatrics Federal Medical Centre Makurdi Nigeria

Background: Children with cerebral palsy (CP) are prone to urinary tract infection (UTI), a common cause of childhood morbidity and mortality. However, there has been no report regarding the prevalence of UTI among this group of children inNigeria. Objectives: The study aims at determining the prevalence and the possible predictors of UTI in children with CP compared to age and sex matched children without CP. Methods: A prospective cross-sectional study was carried out among consecutive children with CP at the Neurologic Clinic in the Paediatric Department of the Federal Medical Centre, Makurdi, Nigeria, from December 2011 to May 2013. Results: The age range of the studied population was between 2 and 15 years with a mean age of 8.63 ± 3.83 years including 30 males and 22 females. UTI was confirmed in 20 (38.5%) children with cerebral palsy compared to 2 children (3.8%) without CP (p value 0.000). Among children with CP, Escherichia coli was the commonest organism isolated in 9 (9/20, 45.0%), Streptococcus faecalis in 4 (20.0%), Staphylococcus aureus in 3 (15%), while both Proteus spp., and Klebsiella spp., were isolated in 2 children (10.0%) each. Escherichia coli was also found in the 2 children without CP. All the organisms were resistant to co-trimoxazole, nalidixic acid, nitrofuratoin and amoxiclav, while they were 100% sensitive to ceftriazone and the quinolones. In a univariate regression, analysis only moderate to severe gross motor dysfunction predicted the risk of UTI (OR = 54.81, 95%CI, 2.27 - 1324.00, p value 0.014). Conclusion: Efforts should be put in place to aid mobility among children with CP in order to reduce risk of UT.

关键词： Urinary Tract Infection Cerebral Palsy Children Prevalence Predictors

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欧洲青少年心血管代谢风险与能量摄入误报的关系:欧洲青少年营养健康生活方式研究

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中华高血压杂志 2021年第3期29卷 214-214页

作者：袁源(摘译) 练桂丽(审校) González-gil EM Huybrechts I Aguilera CM Béghin L Breidenassel C Gesteiro E Gonzalez-gross M de Henauw S Kersting M Donne CL Manios Y Marcos A Meirhaeghe A De Miguel-Etayo P Molina-Hidalgo C Molnar D Papadaki A Widhalm K Moreno LA Bel-Serrat S 不详

膳食误报是膳食评估的主要局限性,且与青少年体质量指数(body mass index, BMI)相关。然而,之前没有研究评估青少年膳食误报与心血管代谢风险(cardiometabolic risk, CMR)的相关性。该研究旨在评估青少年膳食误报与CMR因素的相关性,并... 详细信息

膳食误报是膳食评估的主要局限性,且与青少年体质量指数(body mass index, BMI)相关。然而,之前没有研究评估青少年膳食误报与心血管代谢风险(cardiometabolic risk, CMR)的相关性。该研究旨在评估青少年膳食误报与CMR因素的相关性,并评估膳食误报所致能量摄入与CMR相关性的潜在偏倚。

关键词：青少年营养心血管代谢风险能量摄入体质量指数误报健康生活方式 CMR 膳食评估

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Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGING

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