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Park MH, Pandya PK, Zhu Y, Mullis DM, Wang H, Imbrie-Moore AM, Wilkerson R, Marin-Cuartas M, Woo YJ. A Novel Rheumatic Mitral Valve Disease Model with Ex Vivo Hemodynamic and Biomechanical Validation. Cardiovasc Eng Technol 2023; 14:129-140. [PMID: 35941509 PMCID: PMC9905378 DOI: 10.1007/s13239-022-00641-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 07/08/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE Rheumatic heart disease is a major cause of mitral valve (MV) dysfunction, particularly in disadvantaged areas and developing countries. There lacks a critical understanding of the disease biomechanics, and as such, the purpose of this study was to generate the first ex vivo porcine model of rheumatic MV disease by simulating the human pathophysiology and hemodynamics. METHODS Healthy porcine valves were altered with heat treatment, commissural suturing, and cyanoacrylate tissue coating, all of which approximate the pathology of leaflet stiffening and thickening as well as commissural fusion. Hemodynamic data, echocardiography, and high-speed videography were collected in a paired manner for control and model valves (n = 4) in an ex vivo left heart simulator. Valve leaflets were characterized in an Instron tensile testing machine to understand the mechanical changes of the model (n = 18). RESULTS The model showed significant differences indicative of rheumatic disease: increased regurgitant fractions (p < 0.001), reduced effective orifice areas (p < 0.001), augmented transmitral mean gradients (p < 0.001), and increased leaflet stiffness (p = 0.025). CONCLUSION This work represents the creation of the first ex vivo model of rheumatic MV disease, bearing close similarity to the human pathophysiology and hemodynamics, and it will be used to extensively study both established and new treatment techniques, benefitting the millions of affected victims.
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Affiliation(s)
- Matthew H Park
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
| | - Pearly K Pandya
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
| | - Yuanjia Zhu
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Danielle M Mullis
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
| | - Hanjay Wang
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
| | - Annabel M Imbrie-Moore
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
| | - Robert Wilkerson
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
| | - Mateo Marin-Cuartas
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA
- University Department of Cardiac Surgery, Leipzig Heart Center, Leipzig, Germany
| | - Y Joseph Woo
- Department of Cardiothoracic Surgery, Stanford University, Falk Cardiovascular Research Building CV-235, 300 Pasteur Drive, Stanford, CA, 94305-5407, USA.
- Department of Bioengineering, Stanford University, Stanford, CA, USA.
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Bouchahda N, Kallala MY, Zemni I, Ben Messaoud M, Boussaada M, Hasnaoui T, Haj Amor H, Sassi G, Jarraya M, Mahjoub M, Hassine M, Betbout F, Gamra H. Left atrium reservoir function is central in patients with rheumatic mitral stenosis. THE INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING 2022; 38:1257-1266. [PMID: 34971418 DOI: 10.1007/s10554-021-02509-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 12/24/2021] [Indexed: 11/29/2022]
Abstract
We investigated the relationship between Left Atrium strain reservoir function and symptoms and its impact on modulating Left Ventricular mechanics, diastolic filling, stroke volume, mean trans-mitral gradient and pulmonary pressure in mitral stenosis (MS) patients. We examined 195 full spectrum MS patients which were divided into two groups: Group 1 (n = 109) included patients with NYHA I & II functional class and group 2 (n = 86) included patients with NYHA III & IV functional class. LA strain reservoir function and classical echocardiographic parameters were calculated. LASr was significantly higher in group 1 versus group 2 in patients with MVA ≤ 1cm2 [8.8(6.0-12.6) vs 6.8(4.1-8.9), p = 0.03) and when 1cm2 < MVA ≤ 1.5 cm2 [10.0 (5.4-13.8) vs 6.7(4.5-9.0), p = 0.02). In patients with Pulmonary Hypertension, group 1 had significantly higher LASr than group 2 [11.1(6.6-14.8) vs 5.9(4.3-9.0), p = 0.002) By multivariate analysis, diabetes (OR = 4.11, 95%CI: 1.6-10.4), stroke (OR = 2.9, 95%CI: 1.1-7.9), LASr (OR = 0.9, 95%CI: 0.80-0.99) and LV ejection fraction (LVEF)(OR = 0.9, 95%CI: 0.91-0.99) were independently associated with NYHA functional class. LASr was significantly and positively correlated to MVA (r = 0.3, p < 10-3), stroke volume (r = 0.25, p = 10-3), mitral inflow (r = 0.4, p < 10-3) and LVEF(r = 0.14, p = 0.05). It was significantly and negatively correlated to left ventricular strain (r = -0.65, p < 10-3), LA indexed volume (r = -0.40, p < 10-3), maximum tricuspid regurgitation velocity (r = -0.25, p = 0.003), MTMG (r = -0.25, p = 10-3), and heart rate (r = -0.4, p < 10-3). We demonstrated a large range of interaction between LASr and mitral valve echocardiographic parameters. This may explain the reasons we identified LASr as an independent factor for MS functional tolerance.
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Affiliation(s)
- Nidhal Bouchahda
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia.
| | - Mohamed Yassine Kallala
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Imen Zemni
- Department of Preventive Medicine, Faculty of Medicine, University of Monastir, Rue. Avicenne, 5019, Monastir, Tunisia
| | - Mejdi Ben Messaoud
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Mehdi Boussaada
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Taha Hasnaoui
- Cardiology Department, University Hospital Tahar Sfar, 5100, Mahdia, Tunisia
| | - Hassen Haj Amor
- Cardiology Department, University Hospital Tahar Sfar, 5100, Mahdia, Tunisia
| | - Ghada Sassi
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Marwa Jarraya
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Marwen Mahjoub
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Majed Hassine
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Fethi Betbout
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
| | - Habib Gamra
- Cardiology A Department, University of Monastir, Research Laboratory LR12 SP 16 Fattouma Bourguiba University Hospital, Rue du 1er juin 1955, 5000, Monastir, Tunisia
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Abstract
Rheumatic heart disease results in significant remodeling of the atria that provides the milieu for maintaining atrial fibrillation. Some electrical remodeling is reversible and hence early intervention may prove useful. Active screening for atrial fibrillation in high-risk subset and instituting anticoagulation may reduce the devastating complications that follow. Age older than 50 years, NYHA functional class II symptoms, left atrial dimension >4.0 cm on echocardiogram in parasternal long-axis view, and gradients across the mitral valve >10 mm Hg are clinical indicators that identify the high-risk subset. Ablation strategy in this population may differ compared with the nonvalvular group.
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Affiliation(s)
- Bobby John
- James Cook University, Townsville, Australia; Cardiology Unit, Townsville University Hospital, 100 Angus Smith Drive, Douglas, Queensland 4814, Australia; Christian Medical College, Vellore, India.
| | - Chu-Pak Lau
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Suite 1301-3, Central Building, 1 Pedder Street, Central, Hong Kong
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The importance of age: independent risk factor for atrial fibrillation in isolated rheumatic mitral stenosis. JOURNAL OF CONTEMPORARY MEDICINE 2020. [DOI: 10.16899/jcm.738502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Meta-Analysis of the Incidence, Prevalence, and Correlates of Atrial Fibrillation in Rheumatic Heart Disease. Glob Heart 2020; 15:38. [PMID: 32923332 PMCID: PMC7427678 DOI: 10.5334/gh.807] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Objective: To estimate the incidence, prevalence, and correlates of atrial fibrillation (AF) in a global population with rheumatic heart disease (RHD). Methods: Bibliographic databases were searched to identify all published studies providing data on AF in patients with RHD. Random-effects meta-analysis method was used to pool estimates. Results: Eighty-three studies were included, reporting data from 75,637 participants with RHD in 42 countries. The global prevalence of AF in RHD was 32.8% (range: 4.3%–79.9%). It was higher in severe valvular disease (30.8% vs 20.7%, p = 0.009), in severe mitral valve disease compared to severe aortic disease (30.4% vs 6.3%, p = 0.038). The global cumulative incidence of AF in patients with RHD was 4.8%, 11.4%, 13.2%, and 30.8% at 1, 2, 5, and 10 years of follow-up, respectively. From comparison between patients with and without AF, AF was associated with increased age (mean difference [MD]: 9.5 years; 95% CI: 7.8–1.3), advanced heart failure (odds ratio [OR]: 4.4; 95% CI 2.1–9.3), tricuspid valve involvement (OR: 4.0; 95% CI: 3.0–5.3), history of thromboembolism (OR: 6.2; 95% CI: 3.4–11.4), highly sensitive C-reactive protein (MD: 5.5 mg/dL; 95% CI: 1.2–9.8), systolic pulmonary arterial pressure (MD: 3.6 mmHg; 95% CI: 0.8–6.3), right atrium pressure (MD: 1.5 mmHg; 95% CI: 1.0–2.0), and left atrium diameter (MD: 8.1 mm; 95% CI: 5.5–10.7). Conclusions: About one-third of patients with RHD have AF, with an incidence which almost triples every five years after diagnosis. Factors associated with AF include age, advanced heart failure, thromboembolism, and few cardiac hemodynamics parameters.
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Verma N, Vijayvergiya R, Grover S. Impact of balloon mitral valvotomy on quality of life and psychiatric morbidity in patients with severe mitral stenosis. Ind Psychiatry J 2018; 27:285-292. [PMID: 31359985 PMCID: PMC6592193 DOI: 10.4103/ipj.ipj_76_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES To evaluate the quality of life (QoL), psychiatric comorbidities in patients with rheumatic heart disease-mitral stenosis (RHD-MS), and the impact of balloon mitral valvotomy (BMV) on the QoL and psychiatric morbidity. MATERIALS AND METHODS Fifty consecutive patients of RHD-MS were evaluated for QoL and psychiatric morbidity prior to BMV and at 3 months after the procedure. RESULTS The mean age of the study sample was 34.9 years (standard deviation, 11.1 years). At baseline assessment, majority (94%) had New York Heart Association Class II/III symptoms and QoL scores below average, that is, 50. About two-fifth (19 out of 50) of the patients had one or more psychiatric comorbidity, that is, depression (32%), anxiety (16%), and somatoform disorder (12%). Those with psychiatric comorbidity had poor QoL scores in social, emotional, and mental subscales (P < 0.05) at the baseline. At 3-month follow-up, there were significant improvement in symptoms and transmitral pressure gradients (P < 0.05), QoL scores (P < 0.05), and psychiatric comorbidities (P < 0.05) after BMV. Improvements in QoL were irrespective of the baseline psychiatric comorbidity. CONCLUSIONS High prevalence of psychiatric illness and poor QoL scores were observed in patients with RHD-MS. BMV significantly improves the QoL and psychiatric comorbidities.
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Affiliation(s)
- Nipun Verma
- Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Rajesh Vijayvergiya
- Department of Cardiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sandeep Grover
- Department of Psychiatry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Sharma G, Shetkar S, Bhasin A, Ramakrishnan L, Juneja R, Naik N, Roy A, Ramakrishnan S, Bhargava B, Bahl VK. High sensitive C-reactive protein and interleukin 6 in atrial fibrillation with rheumatic mitral stenosis from Indian cohort. Indian Heart J 2016; 69:505-511. [PMID: 28822519 PMCID: PMC5560862 DOI: 10.1016/j.ihj.2016.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 11/26/2016] [Accepted: 12/12/2016] [Indexed: 11/28/2022] Open
Abstract
Introduction Presence of chronic low grade inflammation has often been implicated in the etiology of atrial fibrillation (AF). Whether pre-existing inflammatory state promotes AF or initiation of AF activates inflammation is a dilemma among clinicians. This study investigates the role of high sensitive C reactive protein (hs-CRP) and interleukin 6 (IL-6) in AF with rheumatic mitral stenosis (Rh-MS) as markers of chronic inflammation. Methods This case control cohort included sixty five (n = 65) Rh-MS patients having other valve lesions as trivial to mild. Out of them twenty nine (n = 29; group C) had baseline AF and rest were normal sinus rhythm (NSR). A 24 h holter recording was done in NSR patients to diagnose paroxysmal AF/tachyarrhythmia forming group B (n = 12) and not having any tachyarrhythmia were designated as NSR; group A (n = 24). Results hs-CRP and IL6 showed statistically significant increase in group C (permanent AF) compared to group A (95% CI: 4.2–0.9, p = 0.007; 95% CI: 1.2–0.89; p = 0.05 respectively), while it was non significant between group A and group B (p > 0.05). A weak positive correlation was observed with hs-CRP and left atrial volume index (LAVi) (r = 0.45, p = 0.06) in AF group as compared to NSR group. 68.2% of patients in AF group (27/41) had moderate to severe spontaneous echo contrast (SEC) as compared to 37.5% (10/24) in NSR group. Conclusion Increased hs-CRP and IL-6 levels in the paroxysmal and permanent AF group may favour the hypothesis that low grade chronic inflammation could be the cause of atrial fibrillation than a consequence.
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Affiliation(s)
- Gautam Sharma
- Department of Cardiology, Room No 12, 8th floor, All India Institute of Medical Sciences, New Delhi, India.
| | - Sudhir Shetkar
- Department of Cardiology, Apollo Group of Hospitals, Nashik, India.
| | - Ashu Bhasin
- Department of Neurology, All India Institute of Medical Sciences, Room No 708, New Delhi, India.
| | - Lakshmy Ramakrishnan
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, Room No 61 Ground Floor, New Delhi, India.
| | - Rajnish Juneja
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | - Nitish Naik
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | - Ambuj Roy
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | | | - Balram Bhargava
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | - Vinay Kumar Bahl
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
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Beig JR, Tramboo NA, Rather HA, Hafeez I, Ananth V, Lone AA, Yaqoob I, Bhat IA, Ali M. Immediate effect of percutaneous transvenous mitral commissurotomy on atrial electromechanical delay and P-wave dispersion in patients with severe mitral stenosis. Indian Heart J 2015; 67 Suppl 2:S46-54. [PMID: 26688153 DOI: 10.1016/j.ihj.2015.10.375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 09/30/2015] [Accepted: 10/15/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Mitral stenosis (MS) is associated with prolonged inter- and intra-atrial electromechanical delays and increased P-wave dispersion, which are markers of atrial fibrillation (AF) risk. This study was conducted to assess the immediate effect of successful percutaneous transvenous mitral commissurotomy (PTMC) on these parameters. METHODS This single center observational study included 25 patients with severe MS (aged 34.1 ± 7.1 years, with mean mitral valve area (MVA) of 0.74 ± 0.13 cm(2)), in sinus rhythm, who underwent successful PTMC at our hospital. P-wave dispersion (PWD) was calculated by subtracting minimum P-wave duration (P min) from maximum P-wave duration (Pmax), measured on a 12-lead surface ECG obtained from each patient in supine position at a paper speed of 50mm/s and 20mm/mV. Inter-atrial (AEMD), left intra-atrial (L-IAEMD), and right intra-atrial (R-IAEMD) electromechanical delays were measured on tissue Doppler imaging. PTMC was performed using the standard Inoue Balloon technique. All these parameters were evaluated and compared before and 24-48 h after PTMC. RESULTS Successful PTMC led to significant reduction in AEMD (p < 0.001), L-IAEMD (p < 0.001), and R-IAEMD (p < 0.001). There were no changes in Pmax, Pmin, and PWD immediately after PTMC. CONCLUSIONS Successful PTMC has a favorable early impact on inter- and intra-atrial electromechanical delays, which are considered as novel parameters of atrial electromechanical remodeling in MS patients. Prospective large-scale studies are required to confirm whether improvement in these markers translates into reduced long-term AF risk.
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Affiliation(s)
| | | | | | - Imran Hafeez
- Asst. Professor, Dept. of Cardiology, SKIMS, Srinagar, India
| | - Vijai Ananth
- DM Fellow, Dept. of Cardiology, SKIMS, Srinagar, India
| | - Ajaz A Lone
- Assoc. Professor, Dept. of Cardiology, SKIMS, Srinagar, India
| | - Irfan Yaqoob
- Senior Resident, Dept. of Cardiology, SKIMS, Srinagar, India
| | - Irfan A Bhat
- Senior Resident, Dept. of Cardiology, SKIMS, Srinagar, India
| | - Muzaffar Ali
- DM Fellow, Dept. of Cardiology, SKIMS, Srinagar, India
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Sharma S, Sharma G, Hote M, Devagourou V, Kesari V, Arava S, Airan B, Ray R. Light and electron microscopic features of surgically excised left atrial appendage in rheumatic heart disease patients with atrial fibrillation and sinus rhythm. Cardiovasc Pathol 2014; 23:319-26. [DOI: 10.1016/j.carpath.2014.07.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 07/29/2014] [Accepted: 07/30/2014] [Indexed: 11/30/2022] Open
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Pourafkari L, Ghaffari S, Bancroft GR, Tajlil A, Nader ND. Factors associated with atrial fibrillation in rheumatic mitral stenosis. Asian Cardiovasc Thorac Ann 2014; 23:17-23. [DOI: 10.1177/0218492314530134] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Background Atrial fibrillation is a complication of mitral valve stenosis that causes several adverse neurologic outcomes. Our objective was to establish a mathematical model to predict the risk of atrial fibrillation in patients with mitral stenosis. Methods Of 819 patients with mitral stenosis who were screened, 603 were enrolled in the study and grouped according to whether they were in sinus rhythm or atrial fibrillation. Demographic, echocardiographic, and hemodynamic data were recorded. Logistic regression models were constructed to identify the relative risks for each contributing factor and calculate the probability of developing atrial fibrillation. Receiver operating characteristic curves were plotted. Results Two hundred (33%) patients had atrial fibrillation; this group was older, in a higher functional class, more likely to have suffered previous thromboembolic events, and had significantly larger left atrial diameters, lower ejection fractions, and lower left atrial appendage emptying flow velocity. The factors independently associated with atrial fibrillation were left atrial strain (odds ratio = 7.53 [4.47–12.69], p < 0.001), right atrial pressure (odds ratio = 1.09 [1.02–1.17], p = 0.01), age (odds ratio = 1.14 [1.05–1.25], p = 0.002), and ejection fraction (odds ratio = 0.92 [0.87–0.97], p = 0.003). The area under the curve for the combined receiver operating characteristic for this model was 0.90 ± 0.12. Conclusion Age, right atrial pressure, ejection fraction, and left atrial strain can be used to construct a mathematical model to predict the development of atrial fibrillation in rheumatic mitral stenosis.
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Affiliation(s)
- Leili Pourafkari
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samad Ghaffari
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - George R Bancroft
- Department of Anesthesiology, University at Buffalo, Buffalo, NY, USA
| | - Arezou Tajlil
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nader D Nader
- Department of Anesthesiology, University at Buffalo, Buffalo, NY, USA
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Abstract
PURPOSE There may be an increase in the risk of atrial arrhythmia due to left atrial enlargement and the influence on conduction system in acute rheumatic fever. The aim of this study is to investigate atrial electromechanical delay and P-wave dispersion in patients with acute rheumatic fever. PATIENTS A total of 48 patients diagnosed with acute rheumatic fever and 40 volunteers of similar age, sex, and body mass index were included in the study. The study groups were compared for M-mode echocardiographic parameters, interatrial electromechanical delay, intra-atrial electromechanical delay, and P-wave dispersion. RESULTS Maximum P-wave duration, P-wave dispersion, and interatrial electromechanical delay were significantly higher in patients with acute rheumatic fever compared with the control group (p < 0.001). However, there was no difference in terms of intra-atrial electromechanical delay (p > 0.05). For patients with acute rheumatic fever, a positive correlation was identified between the left atrium diameter and the P-wave dispersion and interatrial electromechanical delay (r = 0.524 and p < 0.001, and r = 0.351 and p = 0.014, respectively). Furthermore, an important correlation was also identified between the P-wave dispersion and the interatrial electromechanical delay (r = 0.494 and p < 0.001). CONCLUSION This study shows the prolongation of P-wave dispersion and interatrial electromechanical delay in acute rheumatic fever. Left atrial enlargement can be one of the underlying reasons for the increase in P-wave dispersion and interatrial electromechanical delay.
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Azzam H, Zagloul M. Elevated platelet microparticle levels in valvular atrial fibrillation. Hematology 2013; 14:357-60. [DOI: 10.1179/102453309x12473408860460] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
- Hanan Azzam
- Department of Clinical PathologyFaculty of Medicine, Mansoura University, Egypt
| | - Maged Zagloul
- Department of CardiologyFaculty of Medicine, Mansoura University, Egypt
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Azzam H, Abousamra NK, Wafa AA, Hafez MM, El-Gilany AH. Upregulation of CD40/CD40L system in rheumatic mitral stenosis with or without atrial fibrillation. Platelets 2012; 24:516-20. [DOI: 10.3109/09537104.2012.721906] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Reményi B, Wilson N, Steer A, Ferreira B, Kado J, Kumar K, Lawrenson J, Maguire G, Marijon E, Mirabel M, Mocumbi AO, Mota C, Paar J, Saxena A, Scheel J, Stirling J, Viali S, Balekundri VI, Wheaton G, Zühlke L, Carapetis J. World Heart Federation criteria for echocardiographic diagnosis of rheumatic heart disease--an evidence-based guideline. Nat Rev Cardiol 2012; 9:297-309. [PMID: 22371105 DOI: 10.1038/nrcardio.2012.7] [Citation(s) in RCA: 487] [Impact Index Per Article: 40.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Over the past 5 years, the advent of echocardiographic screening for rheumatic heart disease (RHD) has revealed a higher RHD burden than previously thought. In light of this global experience, the development of new international echocardiographic guidelines that address the full spectrum of the rheumatic disease process is opportune. Systematic differences in the reporting of and diagnostic approach to RHD exist, reflecting differences in local experience and disease patterns. The World Heart Federation echocardiographic criteria for RHD have, therefore, been developed and are formulated on the basis of the best available evidence. Three categories are defined on the basis of assessment by 2D, continuous-wave, and color-Doppler echocardiography: 'definite RHD', 'borderline RHD', and 'normal'. Four subcategories of 'definite RHD' and three subcategories of 'borderline RHD' exist, to reflect the various disease patterns. The morphological features of RHD and the criteria for pathological mitral and aortic regurgitation are also defined. The criteria are modified for those aged over 20 years on the basis of the available evidence. The standardized criteria aim to permit rapid and consistent identification of individuals with RHD without a clear history of acute rheumatic fever and hence allow enrollment into secondary prophylaxis programs. However, important unanswered questions remain about the importance of subclinical disease (borderline or definite RHD on echocardiography without a clinical pathological murmur), and about the practicalities of implementing screening programs. These standardized criteria will help enable new studies to be designed to evaluate the role of echocardiographic screening in RHD control.
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Affiliation(s)
- Bo Reményi
- Green Lane Pediatric and Congenital Cardiac Service, Starship Children's Hospital, Auckland, New Zealand.
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Li Y, Lu Z, Tang Q, Jiang H, Huang C, He B, Hu X, Huang J, Zhu X, Wang H. The increase in sympathetic nerve density in the atrium facilitates atrial fibrillation in patients with rheumatic heart disease. Int J Cardiol 2011; 165:174-8. [PMID: 21911268 DOI: 10.1016/j.ijcard.2011.08.058] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 07/28/2011] [Accepted: 08/17/2011] [Indexed: 11/27/2022]
Abstract
BACKGROUND Atrial fibrillation (Af) is frequently observed in patients with rheumatic heart disease (RHD). The hyperactivity of autonomic nervous system is known to contribute to the occurrence of Af in RHD patients. This study investigated the association between the autonomic density and the risk of Af in RHD patients. METHODS Seventy-five patients were enrolled: (1) RHD patients with Af (N = 25, Group 1); (2) RHD patients without Af (N = 25, Group 2); (3) congenital heart disease patients without Af (N = 25, Group 3). The baseline characteristics and the blood concentrations of renin, C-reaction protein and angiotensin II were collected from all patients. The tissues were obtained from the right atrial appendage during the open-heart surgery and then stained using immunohistochemical methods with autonomic antibodies. RESULTS The sympathetic nerve density was significantly higher in RHD patients with Af than RHD patients without Af and congenital heart disease patients, both endocardially and epicardially. The parasympathetic nerve density did not show significant difference among the three groups. The left atrial diameter was larger in RHD patients with Af than the other two groups. The blood concentrations of renin and angiotensin II were higher in RHD patients with Af than the other two groups. The erythrocyte sedimentation rate and blood concentrations of C-reaction protein did not show significant change among the three groups. CONCLUSION This study provided direct evidence of the increase in sympathetic nerve density in atrium in patients with RHD. This phenomenon may be associated with the development of Af in RHD patients.
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Affiliation(s)
- Yuanhong Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
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Ozaydin M, Turker Y, Varol E, Alaca S, Erdogan D, Yilmaz N, Dogan A. Factors associated with the development of atrial fibrillation in patients with rheumatic mitral stenosis. Int J Cardiovasc Imaging 2010; 26:547-52. [PMID: 20333471 DOI: 10.1007/s10554-010-9609-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Accepted: 03/03/2010] [Indexed: 10/19/2022]
Abstract
The aim of this study was to evaluate the factors associated with the development of atrial fibrillation (AF) in patients with rheumatic mitral stenosis (MS). A total of 146 consecutive patients with rheumatic MS were screened. They were accepted to be in AF group and sinus rhythm group according to their rhythm in the baseline ECG. After screening, 38 patients were excluded due to hyperthyroidism (n = 13), chronic obstructive pulmonary disease (n = 22), malignancy (n = 2) and rheumatoid arthritis (n = 1). Therefore, remaining 108 patients, 74 of whom in sinus rhythm (MS-SR) and 34 of whom in AF (MS-AF) constituted study population. Fourty age- and gender-matched patients constituted control group. Factors associated with development of AF in multivariable analysis included High sensitivity C reactive protein (P = 0.005; odds ratio, 3.44; 95% confidence interval, 1.44-8.22), N-terminal of brain natriuretic peptide precursor (P < 0.0001; odds ratio, 1.03; 95% confidence interval, 1.02-1.06) and left atrial diameter (P < 0.0001; odds ratio, 1.68; 95% confidence interval, 1.32-2.14). Present study suggests that High sensitivity C reactive protein, N-terminal of brain natriuretic peptide precursor and left atrial diameter are associated with development AF in patients with MS.
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Affiliation(s)
- Mehmet Ozaydin
- Department of Cardiology, Suleyman Demirel University, Kurtulus Mah, 122. cad. Hatice Halici apt. no: 126, 32040, Isparta, Turkey.
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Rabus M, Demirbag R, Yildiz A, Tezcan O, Yilmaz R, Ocak AR, Alp M, Erel O, Aksoy N, Yakut C. Association of prolidase activity, oxidative parameters, and presence of atrial fibrillation in patients with mitral stenosis. Arch Med Res 2008; 39:519-24. [PMID: 18514097 DOI: 10.1016/j.arcmed.2008.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Accepted: 03/07/2008] [Indexed: 11/24/2022]
Abstract
BACKGROUND Mitral stenosis (MS) is a common cause of atrial fibrillation (AF). Oxidative stress and inflammation factors were shown to be involved in atrial remodeling. The study aim was to compare the oxidative parameters and prolidase activity in severe MS patients with and without AF. METHODS The study population was comprised of 33 patients with MS and sinus rhythm (group I), 27 patients with MS and AF (group II), and 25 healthy controls (group III). Plasma prolidase activity, total antioxidant capacity (TAC), total oxidative status (TOS), and oxidative stress index (OSI) were determined. Additionally, we measured tissue TOS and TAC in patients with mitral valve replacement. RESULTS TAC and OSI were higher, but TOS and prolidase were lower in patients with MS than control (all p <0.001). These parameters were similar in group I and group II (ANOVA p >0.05). Tissue TAC was significantly lower in group II than group I (0.015 +/- 0.01 vs. 0.026 +/- 0.01 mmol Trolox equiv/L, p = 0.014), tissue TOS was similar between groups I and II (0.24 +/- 0.06 vs. 0.22 +/- 0.05 mmol Trolox equiv/L, p = 0.161). Presence of AF was correlated with systolic blood pressure, left atrial diameter, plasma TAC, tissue TAC, plasma TOS, plasma OSI, and plasma prolidase activity. Tissue TAC level (beta = -0.435, p = 0.006) and left atrial diameter (beta = 0.460, p = 0.003) were independently related with presence of AF in patients with MS. CONCLUSIONS This study suggested that the presence of AF in patients with severe MS may be associated with the plasma prolidase activity, tissue and plasma oxidative parameters.
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Affiliation(s)
- Murat Rabus
- Department of Cardiovascular Surgery, Kartal Kosuyolu Heart and Research Hospital, Istanbul, Turkey
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Rezaian GR, Rezaian S, Liaghat L, Zare N. P-wave dispersion in patients with rheumatic mitral stenosis. Int J Angiol 2007; 16:20-3. [PMID: 22477244 DOI: 10.1055/s-0031-1278239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
It has previously been shown that maximum P-wave duration and P-wave dispersion in 12-lead surface electrocardiogram (ECG) are significantly increased in patients prone to developing atrial fibrillation. Because patients with mitral stenosis (MS) are also susceptible to developing atrial fibrillation, the present study was carried out to determine whether maximum P-wave duration and P-wave dispersion are prolonged in MS patients during normal sinus rhythm. In addition, the correlation between these P-wave variables and the left atrial size, transmitral valve gradient and mitral valve area were determined. Fifty consecutive patients (40 women and 10 men; mean age 35.76±6.59 years) with MS who were in normal sinus rhythm, and a control group of 50 age- and sex-matched healthy persons were studied.A 12-lead ECG was obtained for each subject. All ECGs were scanned through a Cannon scanner at 300 dpi and saved as images in a personal computer. The minimum and maximum P-wave durations, as well as P-wave dispersion, were subsequently calculated. In addition, all patients were evaluated by echocardiography to measure the left atrial size, transmitral valve gradient and mitral valve area by planimetry. The P-wave parameters were compared between the two groups and the correlation between these parameters and the echocardiographic variables were determined in patients with MS. The most important findings included a significant prolongation of maximum P-wave duration in patients with MS compared with controls (P<0.001), and a strong correlation between the maximum P-wave duration and left atrial size (r=0.505, P<0.001), transmitral valve gradient (r=0.371, P=0.01) and a significant negative correlation with mitral valve area (r=-0.379, P=0.007). There was no correlation between the P-wave dispersion and echocardiographic parameters.
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Long-term efficacy and safety of very-low-dose amiodarone treatment for the maintenance of sinus rhythm in patients with chronic atrial fibrillation after successful direct-current cardioversion. Chin Med J (Engl) 2006. [PMID: 17199952 DOI: 10.1097/00029330-200612020-00002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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