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Hattapoğlu S, Çetinçakmak MG. Evaluation of iron overload in visceral organs in thalassemia patients by point shear-wave elastography. Ir J Med Sci 2024:10.1007/s11845-024-03719-0. [PMID: 38789665 DOI: 10.1007/s11845-024-03719-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024]
Abstract
INTRODUCTION The aim of this study was to investigate the value of point shear-wave elastography (pSWE) in the measurement of iron overload in the liver and other visceral organs in patients with beta thalassemia major (BTM). MATERIALS AND METHODS The study included 103 patients diagnosed with BTM who were referred to our clinic for cardiac and liver T2* measurement and a control group of 120 age- and gender-matched healthy volunteers. Cardiac and hepatic T2* measurements were performed in the patient group. Hepatic, pancreatic, splenic, and renal pSWE values were measured in both groups. The pSWE values were compared between the two groups. In the patient group, correlations between pSWE values, cardiac-hepatic T2* values and hepatic size, patient age, and serum ferritin levels were analyzed. RESULTS Hepatic, pancreatic, splenic, and renal pSWE values were significantly higher in the patient group compared to the control group (p ≤ 0.001, < 0.001, 0.014, 0.026, respectively). In the patient group, hepatic pSWE values established a significant correlation with cardiac T2* values, liver size-T2*, pancreatic pSWE values, serum ferritin levels, and age (p = 0.006, < 0.001, 0.001, 0.042, 0.001, 0.032, respectively). In the ROC analysis, the area under the ROC curve was 0.807 for hepatic pSWE in the discrimination of thalassemia patients and healthy controls, and the cut-off value was 1.42, which gave a sensitivity and specificity of 75.7% and 75%, respectively. CONCLUSıON: Point shear-wave elastography can be a useful technique in the clinical measurement of iron overload in the liver, pancreas, spleen, and kidney.
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Affiliation(s)
- Salih Hattapoğlu
- Department of Radiology, Medical School, Dicle University, Diyarbakır, Turkey.
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Ersoy Dursun F, Açıksarı G, Özkök S, İncealtın O. Evaluation of electrocardiography, echocardiography and cardiac T2* for cardiac complications in beta thalassemia major. Int J Cardiovasc Imaging 2021; 38:533-542. [PMID: 34623560 DOI: 10.1007/s10554-021-02421-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/13/2021] [Indexed: 11/24/2022]
Abstract
Cardiac complications such as heart failure and arrhythmias caused by "iron-induced" cardiomyopathy are considered as the primary cause of death in the patients with β-thalassemia major. The aim of this study was to evaluate electrocardiography, echocardiography according cardiac T2* and ferritin findings of patients followed-up for β-thalassemia major, and to investigate the importance of these findings for early detection of cardiac complications. The study included 41 patients and 25 healthy individuals with matched age and gender. The cardiac T2* results revealed a cardiac iron load below 20 ms in 12 (29.27%) patients, and above 20 ms in 29 (70.73%) patients. All electrocardiography parameters significantly increased in the patient group when compared to the control group (p < 0.05). All parameters except P wave segment in electrocardiography and T peak-end/QT ratio were significantly higher in the group with cardiac T2* < 20 ms than the group with cardiac T2* > 20 ms (p < 0.05). Intraventricular septum thickness, left ventricular posterior wall thickness, left ventricular mass and left ventricular mass index detected by echocardiography were significantly higher in the group with T2* < 20 ms (p < 0.05). Electrocardiography, echocardiography, cardiac T2* and ferritin findings should be carefully evaluated in these patients in order to detect early signs of cardiac complications.
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Affiliation(s)
- Fadime Ersoy Dursun
- Department of Hematology, Prof. Dr. Süleyman Yalçın City Hospital, Eğitim, Dr. Erkin Cd. No:161/1, 34722, Kadıköy/Istanbul, Turkey.
| | - Gönül Açıksarı
- Department of Cardiology, Prof. Dr. Süleyman Yalçın City Hospital, Istanbul, Turkey
| | - Serçin Özkök
- Department of Radiology, Prof. Dr. Süleyman Yalçın City Hospital, Istanbul, Turkey
| | - Onur İncealtın
- Department of Emergency Medicine, Prof. Dr. Süleyman Yalçın City Hospital, Istanbul, Turkey
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Yagi K, Nagata Y, Yamagami T, Chujo D, Kamigishi M, Yokoyama‐Nakagawa M, Shikata M, Enkaku A, Takikawa‐Nishida A, Honoki H, Fujisaka S, Origasa H, Tobe K. High prevalence of fragmented QRS on electrocardiography in Japanese patients with diabetes irrespective of metabolic syndrome. J Diabetes Investig 2021; 12:1680-1688. [PMID: 33567117 PMCID: PMC8409839 DOI: 10.1111/jdi.13524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/06/2021] [Accepted: 02/07/2021] [Indexed: 01/13/2023] Open
Abstract
AIMS/INTRODUCTION Fragmented QRS (fQRS) on electrocardiography is a marker of myocardial fibrosis and myocardial scar formation. This study aimed to clarify the relationship of fQRS with diabetes mellitus and metabolic syndrome (MetS) in Japanese patients. MATERIALS AND METHODS Approximately 702 individuals who had a routine health checkup at the Hokuriku Health Service Association (Toyama, Japan) in October 2014 were enrolled and categorized into one of the following four groups based on MetS and diabetes mellitus status: with diabetes mellitus (+) MetS+ (164 participants); diabetes mellitus+ without MetS (Mets-; 103 participants); diabetes mellitus- MetS+ (133 participants); and diabetes mellitus- MetS- (302 participants). fQRS was assessed using the results of electrocardiography. RESULTS The prevalence of fQRS was statistically higher in patients with diabetes mellitus+ MetS+ (37%) and diabetes mellitus+ MetS- (35%), than those with diabetes mellitus- MetS+ (14%) or diabetes mellitus- MetS- (10%; P < 0.0001). Significant differences were observed between the fQRS(+) and fQRS(-) groups for age, sex, waist circumference, heart rate, hypertension, hemoglobin A1c, total cholesterol, MetS and diabetes mellitus. The area under the receiver operating characteristic curve for traditional risk factors and diabetes mellitus was 0.72 (P = 0.0007, 95% confidence interval 0.67-0.76), and for traditional risk factors and MetS it was 0.67 (P = 0.28, 95% confidence interval 0.62-0.72). Patients with diabetes mellitus had more than threefold higher likelihood of showing fQRS (odds ratio 3.41; 95% confidence interval 2.25-5.22; P < 0.0001) compared with the reference group without diabetes mellitus, after adjusting for age, sex, dyslipidemia, hypertension and waist circumference. CONCLUSIONS fQRS was observed more frequently in diabetes mellitus patients than in MetS and control individuals. Diabetes mellitus was the most significant determinant for fQRS among MetS and other traditional metabolic risk factors.
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Affiliation(s)
- Kunimasa Yagi
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Yoshiki Nagata
- Laboratory of Preventive MedicineHokuriku Health Service AssociationToyamaJapan
| | - Takashi Yamagami
- Laboratory of Preventive MedicineHokuriku Health Service AssociationToyamaJapan
| | - Daisuke Chujo
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Miki Kamigishi
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Maki Yokoyama‐Nakagawa
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Masataka Shikata
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Asako Enkaku
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Akiko Takikawa‐Nishida
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Hisae Honoki
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Shiho Fujisaka
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Hideki Origasa
- Biostatistics and Clinical EpidemiologyUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
| | - Kazuyuki Tobe
- 1st Department of Internal MedicineUniversity of Toyama Graduate School of Medicine and Pharmaceutical SciencesToyamaJapan
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Parsaee M, Fazelifar AF, Ansaripour E, Azarkeyvan A, Ghadrdoost B, Charmizadeh A, Behjati M. The Role of Heart Rate Variability and Fragmented QRS for Determination of Subclinical Cardiac Involvement in Beta-Thalassemia Major. Pulse (Basel) 2020; 8:15-20. [PMID: 32999874 DOI: 10.1159/000505556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 12/17/2019] [Indexed: 11/19/2022] Open
Abstract
Background Iron accumulation leads to increased susceptibility to cardiovascular diseases in thalassemia major (TM) patients. Depressed heart rate variability (HRV) and development of arrhythmia are among the manifestations of subclinical cardiac involvement in TM cases. Determination of subclinical cardiac involvement is essential for preventive measures. Thus, we aimed to evaluate the best method for identification of subclinical cardiac dysfunction in TM cases. Materials and Methods In this prospective study, 45 TM and 45 non-TM cases, who were referred for cardiac evaluation, were enrolled. Exclusion criteria included non-sinus rhythm and overt cardiac disease. TM cases underwent cardiac MRI, electrocardiography (ECG), and Holter monitoring. TM cases were divided into two groups of normal versus iron overload with a cardiac T2* of more or less than 20 ms, respectively. The non-TM cases underwent only ECG and Holter monitoring. Results We observed no significant difference regarding HRV between normal versus iron overload TM and non-TM cases. Higher rates of premature atrial complex, low limb voltage, low atrial rhythm, as well as minimum and average HR with lower QRS duration and PR interval were detected in TM versus non-TM cases (p value <0.05). Conclusions We observed a higher prevalence of low limb voltage and low atrial rhythm in TM cases versus non-TM cases. Indeed, the role of fragmented QRS (fQRS) for subclinical detection of cardiac disease in TM cases is still so controversial and needs more evaluation. Application of HRV and fQRS in this regard may need to be performed at the right time point after initiation of blood transfusion, but this needs to be determined.
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Affiliation(s)
- Mozhgan Parsaee
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Farjam Fazelifar
- Cardiac Electrophysiology Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Elham Ansaripour
- Cardiac Electrophysiology Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Azita Azarkeyvan
- Research Center of Iranian Blood Transfusion Organization, Thalassemia Clinic, Tehran, Iran
| | - Behshid Ghadrdoost
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ashraf Charmizadeh
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohaddeseh Behjati
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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Patsourakos D, Gatzoulis KA, Aggeli C, Delicou S, Dimitroglou Y, Xydaki K, Toutouzas K, Androulakis A, Tousoulis D. Twelve-lead and signal-averaged electrocardiographic parameters among beta-thalassemia major patients. J Arrhythm 2020; 36:920-928. [PMID: 33024470 PMCID: PMC7532271 DOI: 10.1002/joa3.12412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 06/25/2020] [Accepted: 07/08/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The majority of beta thalassemia major (β-TM) patients suffer from cardiac disease, while a significant proportion of them die suddenly. Twelve-lead and signal-averaged electrocardiography (SAECG) are simple, inexpensive, readily available tools for identifying an unfavorable arrhythmiological substrate by detecting the presence of arrhythmias, conduction abnormalities, and late potentials (LPs) in these patients. METHODS A total of 47 β-TM patients and 30 healthy controls were submitted to 12-lead and signal-averaged electrocardiography. Basic electrocardiographic parameters and prevalence of LPs were recorded. Basic echocardiographic parameters were estimated by transthoracic echocardiography. T2* was calculated by cardiac magnetic resonance imaging wherever available. RESULTS β-TM patients demonstrated a more prolonged PR interval (167.74 msec vs 147.07 msec) (P = .043), a higher prevalence of PR prolongation (21.05% vs 0%) (P = .013), and a higher prevalence of LPs (18/47, 38.3% vs 2/30, 6.7%) (P = .002) compared with controls. The prevalence of atrial fibrillation among b-TM patients was estimated at 10.64%. Patients had also greater E/e' ratio (8.35, SD = 2.2 vs 7, SD = 2.07) (P = .012) and LAVI (30.7 mL/m2, SD = 8.76 vs 24.6 mL/m2, SD = 6.57) (P = .002) than controls. Regression analysis showed that QTc and LAVI could correctly predict the presence of LPs in the 80.9% of the patients. CONCLUSIONS β-TM patients have a higher prevalence of a prolonged PR interval, atrial fibrillation, and LPs. Twelve-lead and SAECG performance was feasible in all subjects and constitutes a readily available tool for assessing myocardial electrophysiological alterations in this patient group.
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Affiliation(s)
| | - Konstantinos A Gatzoulis
- First Department of Cardiology General Hospital of Athens Ippokrateio, National and Kapodistrian University of Athens Athens Greece
| | - Constantina Aggeli
- First Department of Cardiology General Hospital of Athens Ippokrateio, National and Kapodistrian University of Athens Athens Greece
| | - Sophia Delicou
- Thalassemia and Sickle Cell Unit General Hospital of Athens Ippokrateio Athens Greece
| | - Yannis Dimitroglou
- First Department of Cardiology General Hospital of Athens Ippokrateio, National and Kapodistrian University of Athens Athens Greece
| | - Katerina Xydaki
- Thalassemia and Sickle Cell Unit General Hospital of Athens Ippokrateio Athens Greece
| | - Konstantinos Toutouzas
- First Department of Cardiology General Hospital of Athens Ippokrateio, National and Kapodistrian University of Athens Athens Greece
| | | | - Dimitrios Tousoulis
- First Department of Cardiology General Hospital of Athens Ippokrateio, National and Kapodistrian University of Athens Athens Greece
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Snel GJH, van den Boomen M, Hernandez LM, Nguyen CT, Sosnovik DE, Velthuis BK, Slart RHJA, Borra RJH, Prakken NHJ. Cardiovascular magnetic resonance native T 2 and T 2* quantitative values for cardiomyopathies and heart transplantations: a systematic review and meta-analysis. J Cardiovasc Magn Reson 2020; 22:34. [PMID: 32393281 PMCID: PMC7212597 DOI: 10.1186/s12968-020-00627-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/16/2020] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The clinical application of cardiovascular magnetic resonance (CMR) T2 and T2* mapping is currently limited as ranges for healthy and cardiac diseases are poorly defined. In this meta-analysis we aimed to determine the weighted mean of T2 and T2* mapping values in patients with myocardial infarction (MI), heart transplantation, non-ischemic cardiomyopathies (NICM) and hypertension, and the standardized mean difference (SMD) of each population with healthy controls. Additionally, the variation of mapping outcomes between studies was investigated. METHODS The PRISMA guidelines were followed after literature searches on PubMed and Embase. Studies reporting CMR T2 or T2* values measured in patients were included. The SMD was calculated using a random effects model and a meta-regression analysis was performed for populations with sufficient published data. RESULTS One hundred fifty-four studies, including 13,804 patient and 4392 control measurements, were included. T2 values were higher in patients with MI, heart transplantation, sarcoidosis, systemic lupus erythematosus, amyloidosis, hypertrophic cardiomyopathy (HCM), dilated cardiomyopathy (DCM) and myocarditis (SMD of 2.17, 1.05, 0.87, 1.39, 1.62, 1.95, 1.90 and 1.33, respectively, P < 0.01) compared with controls. T2 values in iron overload patients (SMD = - 0.54, P = 0.30) and Anderson-Fabry disease patients (SMD = 0.52, P = 0.17) did both not differ from controls. T2* values were lower in patients with MI and iron overload (SMD of - 1.99 and - 2.39, respectively, P < 0.01) compared with controls. T2* values in HCM patients (SMD = - 0.61, P = 0.22), DCM patients (SMD = - 0.54, P = 0.06) and hypertension patients (SMD = - 1.46, P = 0.10) did not differ from controls. Multiple CMR acquisition and patient demographic factors were assessed as significant covariates, thereby influencing the mapping outcomes and causing variation between studies. CONCLUSIONS The clinical utility of T2 and T2* mapping to distinguish affected myocardium in patients with cardiomyopathies or heart transplantation from healthy myocardium seemed to be confirmed based on this meta-analysis. Nevertheless, variation of mapping values between studies complicates comparison with external values and therefore require local healthy reference values to clinically interpret quantitative values. Furthermore, disease differentiation seems limited, since changes in T2 and T2* values of most cardiomyopathies are similar.
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Affiliation(s)
- G J H Snel
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
| | - M van den Boomen
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
| | - L M Hernandez
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - C T Nguyen
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
| | - D E Sosnovik
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Charlestown, MA, 02129, USA
- Division of Health Sciences and Technology, Harvard-MIT, 7 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - B K Velthuis
- Department of Radiology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - R H J A Slart
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- Department of Biomedical Photonic Imaging, University of Twente, Dienstweg 1, 7522 ND, Enschede, The Netherlands
| | - R J H Borra
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - N H J Prakken
- Department of Radiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
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Arrhythmias and Sudden Cardiac Death in Beta-Thalassemia Major Patients: Noninvasive Diagnostic Tools and Early Markers. Cardiol Res Pract 2019; 2019:9319832. [PMID: 31885907 PMCID: PMC6914907 DOI: 10.1155/2019/9319832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/03/2019] [Accepted: 08/19/2019] [Indexed: 11/24/2022] Open
Abstract
Beta-thalassemias are a group of inherited, autosomal recessive diseases, characterized by reduced or absent synthesis of beta-globin chains of the hemoglobin tetramer, resulting in variable phenotypes, ranging from clinically asymptomatic individuals to severe anemia. Three main forms have been described: heterozygotes, homozygotes β+, and homozygotes β°. Beta-thalassemia major (β-TM), the most serious form, is characterized by an absent synthesis of globin chains that are essential for hemoglobin formation, causing chronic hemolytic anemia. Cardiac complications represent a leading cause of mortality in β-TM patients, although an important and progressive increase of life expectancy has been demonstrated after the introduction of chelating therapies. Iron overload is the primary factor of cardiac damage resulting in thalassemic cardiomyopathy, in which diastolic dysfunction usually happens before systolic impairment and overt heart failure (HF). Although iron-induced cardiomyopathy is slowly progressive and it usually takes several decades for clinical and laboratory features of cardiac dysfunction to manifest, arrhythmias or sudden death may be present without signs of cardiac disease and only if myocardial siderosis is present. Careful analysis of electrocardiograms and other diagnostic tools may help in early identification of high-risk β-TM patients for arrhythmias and sudden cardiac death.
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Ebrahim G, Sani Z, Haghjoo M, Armin B. The relationship between the presence of fragmented QRS and iron overload determined by magnetic resonance imaging T2* in patients with beta-thalassemia major. Res Cardiovasc Med 2019. [DOI: 10.4103/rcm.rcm_6_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Electrocardiographic abnormalities and arrhythmic risk markers in adult patients with beta thalassemia major. Int J Cardiol 2016; 221:932-6. [DOI: 10.1016/j.ijcard.2016.07.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/04/2016] [Indexed: 11/22/2022]
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Amoozgar H, Zeighami S, Haghpanah S, Karimi M. A comparison of heart function and arrhythmia in clinically asymptomatic patients with beta thalassemia intermedia and beta thalassemia major. Hematology 2016; 22:25-29. [DOI: 10.1080/10245332.2016.1226699] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Hamid Amoozgar
- Neonatology and Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Samaneh Zeighami
- Department of Pediatrics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sezaneh Haghpanah
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehran Karimi
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Karakulak UN, Tutkun E, Yılmaz ÖH. Iron overload and fragmented QRS in patients with Thalassemia major: Mechanisms, therapies, and new horizons. Anatol J Cardiol 2015; 15:592. [PMID: 26139174 PMCID: PMC5337044 DOI: 10.5152/akd.2015.6333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bayar N, Kurtoğlu E, Arslan Ş, Küçükseymen S. Author's Reply. Anatol J Cardiol 2015; 15:592-3. [PMID: 26351712 PMCID: PMC5337045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Nermin Bayar
- Department of Cardiology, Antalya Education and Research Hospital; Antalya-Turkey,Address for Correspondence: Dr. Nermin Bayar, Öğretmenevleri Mah. 19. Cadde, Fetih Konakları B/5 Konyaaltı-Antalya-Türkiye E-mail:
| | - Erdal Kurtoğlu
- Department of Hematology, Antalya Education and Research Hospital; Antalya-Turkey
| | - Şakir Arslan
- Department of Cardiology, Antalya Education and Research Hospital; Antalya-Turkey
| | - Selçuk Küçükseymen
- Department of Cardiology, Antalya Education and Research Hospital; Antalya-Turkey
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