en Cardiology Cardiology Study Protocol Study Protocol <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span new="" roman="" style="font-family:" times=""><span style="font-style:italic"><b><span style="font-size:9.0pt"><span style="font-style:normal">Background: </span></span></b><span style="font-size:9.0pt"><span style="font-style:normal">The current registry system aims to design a database that can be used for future research as a tool to produce and update new protocols for the diagnosis, treatment, management, and prevention of heart diseases.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span new="" roman="" style="font-family:" times=""><span style="font-style:italic"><span style="font-size:9.0pt"><span style="font-style:normal">&nbsp;&nbsp; <b>Methods:</b> In this hospital-based registry system, established on 27 July 2021, all the adult patients (age &ge;18 years old) with signs and symptoms of cardiac diseases under coronary angiography or angioplasty in the cardiac ward of Imam Hossein Hospital of Tehran, Iran were recruited and followed-up until 30 days after discharge in the pilot phase. All data were collected using a researcher-made checklist from face-to-face interviews with patients and their medical records. The data were registered electronically in web-based software. Quality Control (QC) is conducted monthly by the QC team to ensure the documented data&#39;s quality.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span new="" roman="" style="font-family:" times=""><span style="font-style:italic"><span style="font-size:9.0pt"><span style="font-style:normal">&nbsp;&nbsp; <b>Results: </b>among 1265 patients under coronary angiography or angioplasty over a year, 97% (n=1198) of them were Iranian, and 991 (73.33%) patients lived in the country&#39;s capital, Tehran. About 55% (n=706) of patients were male. The mean age of the total patients was 60.48 &plusmn; 12.01 years. 764 (60.39%) patients were diagnosed with Coronary Artery Disease (CAD). Of all CAD patients, 32.72% (n=250) and 1.18% (n=9) were premature and very early CAD, respectively. During one year, 22.54% (n=279) and 7.02% (n=87) of patients were under PCI and CABG, respectively.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span new="" roman="" style="font-family:" times=""><span style="font-style:italic"><b><span style="font-size:9.0pt"><span style="font-style:normal">&nbsp;&nbsp; Conclusion:</span></span></b><span style="font-size:9.0pt"><span style="font-style:normal"> Since CVDs, especially CADs, are one of the most common and priority diseases in Iran&#39;s health system, establishing a coronary angiography and angioplasty registration system is an opportunity to study the epidemiological and clinical process of CVDs in the shape of an accurate registration system.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span new="" roman="" style="font-family:" times=""><span style="font-style:italic"><span style="font-size:9.0pt"><span style="font-style:normal"></span></span></span></span></span></span></span></span><br> &nbsp; Coronary artery disease, Coronary angiography, Coronary angioplasty, Registry system, Iran 551 561 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-8571-1&slc_lang=en&sid=1 Mohammad Haji Aghajani dr.aghajani@yahoo.com 200319475328460089408 200319475328460089408 No Prevention of Cardiovascular Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Roxana Sadeghi roxan.sadeghi@gmail.com 200319475328460089409 200319475328460089409 No Prevention of Cardiovascular Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mohammad Parsa Mahjoob parsa3903@yahoo.com 200319475328460089410 200319475328460089410 No Department of Cardiology, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran Amir Heidari amir_h2026@yahoo.com 200319475328460089411 200319475328460089411 No Department of Cardiology, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran Fatemeh Omidi dr.fateme.omidi@gmail.com 200319475328460089412 200319475328460089412 No Department of Cardiology, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mohammad Sistanizad sistanizadm@sbmu.ac.ir 200319475328460089413 200319475328460089413 No Prevention of Cardiovascular Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Asma Pourhoseingholi asma.phg@gmail.com 200319475328460089414 200319475328460089414 No Prevention of Cardiovascular Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Seyed Saeed Hashemi Nazari Saeedh_1999@yahoo.com 200319475328460089415 200319475328460089415 No Prevention of Cardiovascular Disease Research Center, Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mahmoud Yousefifard yousefifard20@gmail.com 200319475328460089416 200319475328460089416 No Physiology Research Center, Iran University of Medical Sciences, School of Medicine, Tehran, Iran Reza Miri cardio.rc@sbmu.ac.ir 200319475328460089417 200319475328460089417 Yes Prevention of Cardiovascular Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Niloufar Taherpour niilootaher@sbmu.ac.ir 200319475328460089418 200319475328460089418 No Prevention of Cardiovascular Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran