International Cardiovascular Surgery Meetings Calender (2010-2011)

THE JOURNAL OF TEHRAN UNIVERSITY HEART CENTER Editor-in-Chief ABBASALI KARIMI, MD PROFESSOR OF CARDIAC SURGERY TEHRAN UNIVERSITY OF MEDICAL SCIENCES Managing Editor SEYED HESAMEDDIN ABBASI, MD TEHRAN HEART CENTER TEHRAN UNIVERSITY OF MEDICAL SCIENCES International Editors Zohair Yousef Al-halees, MD , FRCSC, FACS Fred Morady, MD King Faisal Heart Institute, Saudi Arabia University of Michigan, U. S. A Yadolah Dodge, PhD Mohammed T. Numan, MD University of Neuchâtel, Switzerland University of Texas, U. S. A Ali Dodge–Khatami, MD, PhD Ahmand S. Omran, MD, FACC, FASE University of Zürich, Switzerland King Abdulaziz Cardiac Center, Saudi Arabia Iradj Gandjbakhch, MD Fausto J. Pinto, MD, PhD, FESC, FACC, FASA, FSCAI, Hopital Pitie, France FASE Omer Isik, MD Lisbon University, Portugal Yeditepe University, School of Medicine, Turkey Mehrdad Rezaee, MD, PhD Sami S. Kabbani, MD Stanford University, School of Medicine, U. S. A Damascus University Cardiovascular Surgical Center, Syria Gregory S. Thomas, MD, MPH, FACC, FACP, FASNC Kayvan Kamalvand, MD, FRCP, FACC University of California, U. S. A William Harvey Hospital, United Kingdom Lee Samuel Wann, MD Jean Marco, MD, FESC Wisconsin Heart Hospital, U. S. A Centre Cardio- Thoracique de Monaco, France Hein J. Wellens, MD Ali Massumi, MD Cardiovascular Research Institute, Maastricht, The Netherlands Texas Heart Institute, U. S. A Douglas P. Zipes, MD Carlos-A. Mestres, MD Indiana University, School of medicine, U. S. A University of Barcelona, Spain Editorial Board Hossien Ahmadi, MD Seyed Rasoul Mirsharifi, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Shahin Akhondzadeh, PhD Ahmad Mohebi, MD Tehran University of Medical Sciences Iran University of Medical Sciences Mohammad Alidoosti, MD Mohammad-Hasan Namazi Tehran University of Medical Sciences Shaheed beheshti University of Medical Sciences Mohammad Ali Boroumand, MD Ebrahim Nematipour, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Ahmad Reza Dehpour, PhD Rezayat Parvizi, MD Tehran University of Medical Sciences Tabriz University of Medical Sciences Abbasali Karimi, MD Masoud Pezeshkian Tehran University of Medical Sciences Tabriz University of Medical Sciences Seyed Ebrahim Kassaian, MD Hassan Radmehr, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Davood Kazemi Saleh, MD Saeed Sadeghian, MD Baghiatallah University of Medical Sciences Tehran University of Medical Sciences Majid Maleki, MD Mojtaba Salarifar, MD Iran University of Medical Sciences Tehran University of Medical Sciences Mehrab Marzban, MD Nizal Sarraf –Zadegan, MD Tehran University of Medical Sciences Isfahan University of Medical Sciences Mansor Moghadam, MD Ahmad Yaminisharif, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Sina Moradmand Badie, MD Mohammad Reza Zafarghandi, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Seyed Mahmood Mirhoseini, MD, DSc, FACC, FAES Aliakbar Zeinaloo, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Advisory Board Kiyomars Abbasi, MD Elise Langdon- Neuner Tehran University of Medical Sciences The editor of The Write Stuff, Austria Seifollah Abdi, MD Jalil Majd Ardekani, MD Iran University of Medical Sciences Tehran University of Medical Sciences Alireza Amirzadegan, MD Fardin Mirbolook, MD Tehran University of Medical Sciences Gilan University of Medical Sciences Naser Aslanabadi, MD Mehdi Najafi, MD Tabriz University of Medical Sciences Tehran University of Medical Sciences Sirous Darabian, MD Younes Nozari, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Gholamreza Davoodi, MD Hamid Reza Pour Hosseini, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Saeed Davoodi, MD Hakimeh Sadeghian, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Iraj Firoozi, MD Mohammad Saheb Jam, MD & PT Iran University of Medical Sciences Tehran University of Medical Sciences Seyed Khalil Foroozannia, MD Abbas Salehi Omran, MD Shaheed Sadoghi University of Medical Sciences Tehran University of Medical Sciences Armen Gasparyan MD, PhD Mahmood Shabestari, MD Armenia Mashhad University of Medical Sciences Ali Ghaemian, MD Shapour Shirani, MD Mazandaran University of Medical Sciences Tehran University of Medical Sciences Namvar Ghasemi Movahedi, MD Abbas Soleimani, MD Tehran University of Medical Sciences Kerman University of Medical Sciences Abbas Ghiasi, MD Seyed Abdolhosein Tabatabaei, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Ali Kazemi Saeed, MD Murat Ugurlucan, MD Tehran University of Medical Sciences Rostock University Medical Faculty Seyed Kianoosh Hoseini Arezou Zoroufian, MD Tehran University of Medical Sciences Tehran University of Medical Sciences Mohammad Jafar Hashemi, MD Iran University of Medical Sciences Statistical Consultant Mahmood Sheikh Fathollahi Technical Editors Pedram Amouzadeh Office Fatemeh Esmaeili Darabi The Journal of Tehran University Heart Center is indexed in EMBASE, CAB Abstracts, Global Health, Chemical Abstract Service, Cinahl, Google Scholar, DOAJ, Geneva Foundation for Medical Education and Research, Index Copernicus, Index Medicus for the WHO Eastern Mediterranean Region (IMEMR), ISC, SID, Iranmedex and Magiran Address North Kargar Street, Tehran Heart Center, Tehran, Iran 1411713138. Tel: +98-21-88029720. Fax: +98-21-88029702. Web Site: http://jthc.tums.ac.ir. E-mail: [email protected]. TEHRAN HEART CENTER Content Volume: 5 Number: 2 Spring 2010 The Journal of Tehran University Heart Center Review Article Monitoring of Anticoagulant Therapy in Heart Disease: Considerations for the Current Assays Mohammadali Boroumand, Hamidreza Goodarzynejad ……………..................................................................................................................................... 57 Original Articles Is the Peak-to-Mean Pressure Gradient Ratio Useful for Assessment of Aortic Valve Prosthesis Obstruction? Maryam Esmaeilzadeh, Ahmad Mirdamadi, Mozhgan Parsaee, Anita Sadeghpour, Majid Maleki, Hooman Bakhshandeh Abkenar …............................... 69 Measurement of Atrial Septal Defect Size: A Comparative Study Between Transesophageal Echocardiography and Balloon Occlusive Diameter Method Hakimeh Sadeghian, Alimohammad Hajizeinali, Bahareh Eslami, Masoumeh Lotfi-Tokaldany, Mahmood Sheikhfathollahi, Mohammad Sahebjam, Elham Hakki, Arezou Zoroufian, Seyed Ebrahim Kassaian, Mohammad Alidosti ............................................................................................................................ 74 Relationship Between Calcium-Phosphorus Product and Severity of Valvular Heart Insufficiency in Patients Undergoing Chronic Hemodialysis Masoumeh Kahnooj, Mohammad Masoomi, Ali Naderinasab, Akram Zaeem, Mehrdad Sheikhvatan ................................................................................. 78 Sonographic Prediction of Body Fat Volume (Subcutaneousand Visceral Fat) in Cardiovascular Patients Mir Hatef Shojaei, Shapour Shirani, Mohammad Reza Eshraghian, Maryam Soleymanzadeh ............................................................................................. 83 Radiofrequency Catheter Ablation of Atrioventricular Nodal Reentrant Tachycardia: Success Rates and Complications During 14 Years of Experience Ahmad Yaminisharif, Gholamreza Davoodi, Ali Kazemisaeid, Ali Vasheghani Farahani, Fatemeh Ghazanchai, Mansour Moghaddam ............................. 87 Case Reports Single Stage Aortic Valve Replacement and Splenectomy in a Patient with Severe Aortic Stenosis Rezayat Parvizi, Rasoul Ibrahim Abdulrahman, Rezvaneh Salehi, Ghader Shah Mohamadi ……....……........................................................................... 92 Quadricuspid Aortic Valve Diagnosed by Transesophageal Echocardiography: A Case Report Farahnaz Nikdoust, Hakimeh Sadeghian, Bahareh Eslami, Shahla Majidi, Dariush Javidi ……..…................................................................................. 95 Perivalvular Abscess of Tricuspid Valve: A Rare Complication of Infective Endocarditis Ali Reza Moaref, Yadallah Mahmoody, Khallil Zarrabie …………….................................................................................................................................... 98 The Journal of Tehran University Heart Center TEHRAN HEART CENTER Review Article Monitoring of Anticoagulant Therapy in Heart Disease: Considerations for the Current Assays Mohammadali Boroumand, MD*, Hamidreza Goodarzynejad, MD Tehran Heart Center, Tehran University of Medical Sciences, Iran. Abstract Clinicians should be aware of new developments to familiarize themselves with pharmacokinetic and pharmacodynamic characteristics of new anticoagulant agents to appropriately and safely use them. For the moment, cardiologists and other clinicians also require to master currently available drugs, realizing the mechanism of action, side effects, and laboratory monitoring to measure their anticoagulant effects. Warfarin and heparin have narrow therapeutic window with high inter- and intra-patient variability, thereby the use of either drug needs careful laboratory monitoring and dose adjustment to ensure proper antithrombotic protection while minimizing the bleeding risk. The prothrombin time (PT) and the activated partial thromboplastin time (aPTT) are laboratory tests commonly used to monitor warfarin and heparin, respectively.

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