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Jaroszyński A, Jaroszyńska A, Dąbrowski W, Zaborowski T, Stepulak A, Iłżecki M, Zubilewicz T. Factors influencing P terminal force in lead V1 of the ECG in hemodialysis patients. Arch Med Sci 2018; 14:257-264. [PMID: 29593797 PMCID: PMC5868674 DOI: 10.5114/aoms.2017.65926] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 11/17/2015] [Indexed: 12/04/2022] Open
Abstract
INTRODUCTION Atrial fibrillation (AF) is a highly prevalent arrhythmia in hemodialysis (HD) patients, and an HD session may be a trigger for AF episodes. An abnormal P-terminal force in lead V1 (PTFV1) may predict new-onset AF in HD patients. The aim of the study was to assess the influence of the HD process on PTFV1 and to evaluate possible factors influencing PTFV1 in a group of selected HD patients. MATERIAL AND METHODS One hundred and fifty-three selected HD patients entered the study. Blood chemistry, electrocardiography, and impedance cardiography were evaluated before and after HD. Echocardiography was performed on the morning after dialysis. Abnormal PTFV1 was defined as PTFV1 > 40 mm × ms. RESULTS Abnormal PTFV1 was found in 35.3% of patients before dialysis and in 48.4% of patients after dialysis. The results of multiple regression analysis revealed that the independent predictors of pre-dialysis abnormal PTFV1 were: left atrial volume index (p = 0.002), left ventricular mass index (p = 0.014), and pre-dialysis thoracic fluid content (p = 0.021) values. The independent predictors of HD-induced abnormal PTFV1 values were larger differences between pre-dialysis and post-dialysis values of serum potassium (p < 0.001) and mean arterial pressure (p = 0.008). CONCLUSIONS Abnormal PTFV1 is prevalent in HD patients. The HD process adversely affects PTFV1 values. Pre-dialysis abnormal PTFV1 is mainly associated with structural heart abnormalities and hydration status. HD-induced abnormal PTFV1 is associated predominantly with serum potassium changes as well as HD-induced hypotension. Our results suggest possible risk factors for AF; however, their clinical significance needs to be confirmed in follow-up studies.
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Affiliation(s)
- Andrzej Jaroszyński
- Institute of Medical Sciences, Jan Kochanowski University, Kielce, Poland
- Department of Family Medicine, Medical University of Lublin, Lublin, Poland
| | - Anna Jaroszyńska
- Department of Cardiology, Medical University of Lublin, Lublin, Poland
| | - Wojciech Dąbrowski
- Department of Anesthesiology and Intensive Care, Medical University of Lublin, Lublin, Poland
| | - Tomasz Zaborowski
- Institute of Medical Sciences, Jan Kochanowski University, Kielce, Poland
| | - Andrzej Stepulak
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland
| | - Marek Iłżecki
- Department of Vascular Surgery, Medical University of Lublin, Lublin, Poland
| | - Tomasz Zubilewicz
- Department of Vascular Surgery, Medical University of Lublin, Lublin, Poland
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Charytan DM, Foley R, McCullough PA, Rogers JD, Zimetbaum P, Herzog CA, Tumlin JA. Arrhythmia and Sudden Death in Hemodialysis Patients: Protocol and Baseline Characteristics of the Monitoring in Dialysis Study. Clin J Am Soc Nephrol 2016; 11:721-34. [PMID: 26763255 DOI: 10.2215/cjn.09350915] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Dialysis patients have high rates of cardiovascular morbidity and mortality, but data on arrhythmia burden, arrhythmia type, arrhythmia triggers, and the identity of terminal arrhythmias have historically been limited by an inability to monitor heart rhythm for prolonged periods. OBJECTIVES To investigate arrhythmia and its association with sudden death in dialysis-dependent ESRD, describe the potential for implantable devices to advance study of dialysis physiology, review the ethical implications of using implantable devices in clinical studies, and report on the protocol and baseline results of the Monitoring in Dialysis Study (MiD). DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS In this multicenter, interventional-observational, prospective cohort study, we placed implantable loop recorders in patients undergoing long-term hemodialysis. The proportion of patients experiencing clinically significant arrhythmias was the primary endpoint. For 6 months, we captured detailed data on the primary endpoint, symptomatic arrhythmias, other electrocardiographic variables, dialysis prescription, electrolytes, dialysis-related variables, and vital signs. We collected additional electrocardiographic data for up to 1 year. RESULTS Overall, 66 patients underwent implantation in sites in the United States and India. Diabetes was present in 63.6% of patients, 12.1% were age ≥70 years, 69.7% were men, and 53.0% were black. Primary and secondary endpoint data are expected in 2016. CONCLUSIONS Cardiac arrhythmia is an important contributor to cardiovascular morbidity and mortality in dialysis patients, but available technology has previously limited the ability to estimate its true burden and triggers and to define terminal rhythms in sudden death. Use of implantable technology in observational studies raises complex issues but may greatly expand understanding of dialysis physiology. The use of implantable loop recorders in MiD is among the first examples of such a trial, and the results are expected to provide novel insights into the nature of arrhythmia in hemodialysis patients.
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Affiliation(s)
- David M Charytan
- Department of Medicine, Brigham & Women's Hospital, Boston, Massachusetts;
| | - Robert Foley
- Department of Medicine, Hennepin County Medical Center, University of Minnesota, Minneapolis, Minnesota
| | - Peter A McCullough
- Department of Medicine, Baylor University Medical Center, Baylor Heart and Vascular Institute, Baylor Jack and Jane Hamilton Heart and Vascular Hospital, Dallas, Texas; Department of Medicine, Division of Cardiology, The Heart Hospital, Plano, Texas
| | - John D Rogers
- Department of Cardiology, Scripps Clinic, Torrey Pines, California
| | - Peter Zimetbaum
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts; and
| | - Charles A Herzog
- Department of Medicine, Hennepin County Medical Center, University of Minnesota, Minneapolis, Minnesota
| | - James A Tumlin
- Department of Medicine, University of Tennessee, Chattanooga College of Medicine, Chattanooga, Tennessee
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Vincenti A, Passini E, Fabbrini P, Luise MC, Severi S, Genovesi S. Recurrent intradialytic paroxysmal atrial fibrillation: hypotheses on onset mechanisms based on clinical data and computational analysis. Europace 2014; 16:396-404. [PMID: 24569894 DOI: 10.1093/europace/eut346] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Atrial fibrillation (AF) incidence is high in end-stage renal disease (ESRD) patients, and haemodialysis (HD) session may induce paroxysmal AF episodes. Structural atrium remodelling is common in ESRD patients, moreover, HD session induces rapid plasma electrolytes and blood volume changes, possibly favouring arrhythmia onset. Therefore, HD session represents a unique model to study in vivo the mechanisms potentially inducing paroxysmal AF episodes. Here, we present the case report of a patient in which HD regularly induced paroxysmal AF. In four consecutive sessions, heart rate variability analysis showed a progressive reduction of low/high frequency ratio before the AF onset, suggesting a relative increase in vagal activity. Moreover, all AF episodes were preceded by a great increase of supraventricular ectopic beats. We applied computational modelling of cardiac cellular electrophysiology to these clinical findings, using plasma electrolyte concentrations and heart rate to simulate patient conditions at the beginning of HD session (pre-HD) and right before the AF onset (pre-AF), in a human atrial action potential model. Simulation results provided evidence of a slower depolarization and a shortened refractory period in pre-AF vs. pre-HD, and these effects were enhanced when adding acetylcholine effect. Paroxysmal AF episodes are induced by the presence of a trigger that acts upon a favourable substrate on the background of autonomic nervous system changes and in the described case report all these three elements were present. Starting from these findings, here we review the possible mechanisms leading to intradialytic AF onset.
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Affiliation(s)
- Antonio Vincenti
- Electrophysiology and Cardiac Pacing Unit, San Gerardo Hospital, 20900 Monza, Italy
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Nishi K, Fujimoto S, Hisanaga S, Ogawa O, Kitamura K. Electrocardiographic Assessment of Incident Atrial Fibrillation in Hemodialysis Patients. Ther Apher Dial 2012; 17:16-23. [DOI: 10.1111/j.1744-9987.2012.01137.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shimada K, Tomita T, Kamijo Y, Higuchi M, Ito K, Koizumi Y, Yamamoto K, Aizawa K, Koshikawa M, Kasai H, Izawa A, Miyashita Y, Kumazaki S, Koyama J, Ikeda U. Hemodialysis-Induced P-Wave Signal-Averaged Electrocardiogram Alterations Are Indicative of Vulnerability to Atrial Arrhythmias. Circ J 2012; 76:612-7. [DOI: 10.1253/circj.cj-11-1000] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kentaro Shimada
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Takeshi Tomita
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Yuji Kamijo
- Department of Nephrology Internal Medicine, Shinshu University School of Medicine
| | - Makoto Higuchi
- Department of Nephrology Internal Medicine, Shinshu University School of Medicine
| | | | | | | | - Kazunori Aizawa
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Megumi Koshikawa
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Hiroki Kasai
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Atsushi Izawa
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Yusuke Miyashita
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Setsuo Kumazaki
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Jun Koyama
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
| | - Uichi Ikeda
- Department of Cardiovascular Medicine, Shinshu University School of Medicine
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Severi S, Pogliani D, Fantini G, Fabbrini P, Viganò MR, Galbiati E, Bonforte G, Vincenti A, Stella A, Genovesi S. Alterations of atrial electrophysiology induced by electrolyte variations: combined computational and P-wave analysis. Europace 2010; 12:842-9. [PMID: 20185484 DOI: 10.1093/europace/euq042] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS Haemodialysis (HD) therapy represents a unique model to test in vivo, in humans, the effects of changes in plasma ionic concentrations. Episodes of paroxysmal atrial fibrillation (AF) often occur during the treatment. We investigated the effects of HD-induced electrolyte variations on atrial electrophysiology by analysing ECG P-wave duration (PWd), which reflects atrial conduction velocity (CV), and simulated atrial action potential (AP). METHODS AND RESULTS In 20 end-stage renal disease patients PWd (signal-averaged ECG), heart rate (HR), blood pressure, Na(+), K(+), Ca(2+), and Mg(2+) plasma concentrations were measured before and after HD session. The Courtemanche computational model of human atrial myocyte was used to simulate the atrial AP. AP upstroke duration (AP(ud)), AP duration and atrial cell effective refractory period (ERP) were computed. Extracellular electrolyte concentrations and HR were imposed to the average values measured in vivo. HD decreased K(+) (from 4.9 +/- 0.5 to 3.9 +/- 0.4 mmol/L, P < 0.001) and Mg(2+) (0.92 +/- 0.08 to 0.86 +/- 0.05 mmol/L, P < 0.05), and increased Na(+) (139.8 +/- 3.4 to 141.6 +/- 3.1 mmol/L, P < 0.05) and Ca(2+) (1.18 +/- 0.09 to 1.30 +/- 0.07 mmol/L, P < 0.001) plasma concentrations. PWd systematically increased in all the patients after HD (131 +/- 11 to 140 +/- 12 ms, P < 0.001), indicating an intra-atrial conduction slowing. PWd increments were inversely correlated with K(+) variations (R = 0.73, P < 0.01). Model-based analysis indicated an AP(ud) increase (from 2.58 to 2.94 ms) after HD, coherent with experimental observations on PWd, and a reduction of ERP by 12 ms. CONCLUSION Changes of plasma ionic concentrations may lead to modifications of atrial electrophysiology that can favour AF onset, namely a decrease of atrial CV and a decrease of atrial ERP.
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Affiliation(s)
- Stefano Severi
- Laboratorio di Ingegneria Biomedica-D.E.I.S, Università di Bologna, Cesena, Italy
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Korantzopoulos P, Kokkoris S, Liu T, Protopsaltis I, Li G, Goudevenos JA. Atrial fibrillation in end-stage renal disease. Pacing Clin Electrophysiol 2008; 30:1391-7. [PMID: 17976105 DOI: 10.1111/j.1540-8159.2007.00877.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
End-stage renal disease (ESRD) is associated with increased cardiovascular morbidity and mortality. Recent studies indicate that atrial fibrillation (AF) is prevalent among ESRD patients while it adversely affects the clinical outcome. Despite these considerations, AF management in this population is problematic. Notably, most ESRD patients with AF are deprived of the benefits of anticoagulation therapy because of the fear of hemorrhagic complications. This article provides a concise and critical overview of the complex pathophysiology, epidemiology, and discusses the clinical issues regarding the emerging association between ESRD and AF.
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Ozcan T, Horoz M, Genctoy G, Uyar B, Camsari A, Kiykim AA. The Influence of Hemodialysis on P-Wave Signal-Averaged Electrocardiogram Findings. Artif Organs 2007; 31:612-6. [PMID: 17651116 DOI: 10.1111/j.1525-1594.2007.00433.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The role of P-wave signal-averaged electrocardiography (P-SAECG) in the prediction of atrial fibrillation (AF) attacks has been validated in various disease states. In the present study, we aimed to investigate the effect of hemodialysis (HD) on P-SAECG parameters and to determine the related risk factors that might affect those parameters. Ninety-one HD patients and 68 controls were included. Hemoglobin levels, serum electrolytes, arterial pH, and interdialytic weight changes were assessed. P-wave duration (PWD) and late potentials of P wave (root-mean-square voltage for the last 20 ms of the signal-averaged P wave [LP20]) were determined by P-SAECG. Pre- and postdialysis PWDs were significantly increased in HD patients than in controls (both P < 0.05), while the voltages of pre- and postdialysis LP20 were significantly reduced (both P < 0.05). A significant increase in PWD (P < 0.05) and a significant decrease in LP20 (P < 0.05) were observed following HD. Pre- and postdialysis PWDs and LP20 were correlated with age (all P < 0.05), dialysis duration (all P < 0.05), and left atrial diameters (LADs) (pre- and postdialysis) (all P < 0.05). Intradialytic changes in serum potassium levels were only correlated with postdialysis PWD and LP20 in HD patients (both P < 0.05). HD seems to increase PWD and to reduce LP20. Advanced age, duration of HD, intradialytic change in serum potassium levels, and LAD seem to be the important associates of P-SAECG parameters in HD patients.
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Affiliation(s)
- Turkay Ozcan
- Department of Cardiology, Mersin University, Mersin, Turkey
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Davenport A. Sudden onset of adult respiratory distress syndrome (ARDS) in a long standing chronic haemodialysis patient with lung calcification. Nephrol Dial Transplant 2006; 21:807-10. [PMID: 16410270 DOI: 10.1093/ndt/gfk040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Andrew Davenport
- University College London Center for Nephrology, Royal Free Hospital, London NW3 2QG.
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