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Journal of the American College of... Jul 2021
Topics: Atrial Fibrillation; Atrial Flutter; Humans; Mineralocorticoid Receptor Antagonists; Spironolactone
PubMed: 34015479
DOI: 10.1016/j.jacc.2021.04.080 -
Europace : European Pacing,... Mar 2023The aim of this study was to estimate the global burden of atrial fibrillation (AF)/atrial flutter (AFL) and its attributable risk factors from 1990 to 2019.
AIMS
The aim of this study was to estimate the global burden of atrial fibrillation (AF)/atrial flutter (AFL) and its attributable risk factors from 1990 to 2019.
METHODS AND RESULTS
The data on AF/AFL were retrieved from the Global Burden of Disease Study (GBD) 2019. Incidence, disability-adjusted life years (DALYs), and deaths were metrics used to measure AF/AFL burden. The population attributable fractions (PAFs) were used to calculate the percentage contributions of major potential risk factors to age-standardized AF/AFL death. The analysis was performed between 1990 and 2019. Globally, in 2019, there were 4.7 million [95% uncertainty interval (UI): 3.6 to 6.0] incident cases, 8.4 million (95% UI: 6.7 to 10.5) DALYs cases, and 0.32 million (95% UI: 0.27 to 0.36) deaths of AF/AFL. The burden of AF/AFL in 2019 and their temporal trends from 1990 to 2019 varied widely due to gender, Socio-Demographic Index (SDI) quintile, and geographical location. Among all potential risk factors, age-standardized AF/AFL death worldwide in 2019 were primarily attributable to high systolic blood pressure [34.0% (95% UI: 27.3 to 41.0)], followed by high body mass index [20.2% (95% UI: 11.2 to 31.2)], alcohol use [7.4% (95% UI: 5.8 to 9.0)], smoking [4.3% (95% UI: 2.9 to 5.9)], diet high in sodium [4.2% (95% UI: 0.8 to 10.5)], and lead exposure [2.3% (95% UI: 1.3 to 3.4)].
CONCLUSION
Our study showed that AF/AFL is still a major public health concern. Despite the advancements in the prevention and treatment of AF/AFL, especially in regions in the relatively SDI quintile, the burden of AF/AFL in regions in lower SDI quintile is increasing. Since AF/AFL is largely preventable and treatable, there is an urgent need to implement more cost-effective strategies and interventions to address modifiable risk factors, especially in regions with high or increased AF/AFL burden.
Topics: Humans; Quality-Adjusted Life Years; Atrial Fibrillation; Atrial Flutter; Risk Factors; Global Burden of Disease; Incidence
PubMed: 36603845
DOI: 10.1093/europace/euac237 -
Frontiers in Cardiovascular Medicine 2023
PubMed: 37560111
DOI: 10.3389/fcvm.2023.1221878 -
Cureus Dec 2022Quinine is an anti-malarial drug with documented hematologic, dermatologic, and cardiovascular side effects. Tonic water contains a sub-therapeutic amount of quinine and...
Quinine is an anti-malarial drug with documented hematologic, dermatologic, and cardiovascular side effects. Tonic water contains a sub-therapeutic amount of quinine and is available over the counter. However, the public is unaware of the risks associated with excessive consumption of tonic water. We present a patient who developed atrial flutter with a rapid ventricular response following the consumption of tonic water. The patient responded to rate control therapy and was discharged the following day with a plan to follow up in the outpatient department with an electrophysiologist. Although quinine has been shown to have ventricular anti-arrhythmic effects, its effect on the atria has not been determined. We present this case to bring greater awareness to the cardiovascular risks associated with the consumption of tonic water to reduce morbidity and mortality.
PubMed: 36686142
DOI: 10.7759/cureus.32706 -
The Journal of Clinical Endocrinology... Sep 2023Although iodine-induced hyperthyroidism is a potential consequence of iodinated radiologic contrast administration, its association with long-term cardiovascular...
CONTEXT
Although iodine-induced hyperthyroidism is a potential consequence of iodinated radiologic contrast administration, its association with long-term cardiovascular outcomes has not been previously studied.
OBJECTIVE
To investigate the relationships between hyperthyroidism observed after iodine contrast administration and incident atrial fibrillation/flutter.
METHODS
Retrospective cohort study of the U.S. Veterans Health Administration (1998-2021) of patients age ≥18 years with a normal baseline serum thyrotropin (TSH) concentration, subsequent TSH <1 year, and receipt of iodine contrast <60 days before the subsequent TSH. Cox proportional hazards regression was employed to ascertain the adjusted hazard ratio (HR) with 95% CI of incident atrial fibrillation/flutter following iodine-induced hyperthyroidism, compared with iodine-induced euthyroidism.
RESULTS
Iodine-induced hyperthyroidism was observed in 2500 (5.6%) of 44 607 Veterans (mean ± SD age, 60.9 ± 14.1 years; 88% men) and atrial fibrillation/flutter in 10.4% over a median follow-up of 3.7 years (interquartile range 1.9-7.4). Adjusted for sociodemographic and cardiovascular risk factors, iodine-induced hyperthyroidism was associated with an increased risk of atrial fibrillation/flutter compared with those who remained euthyroid after iodine exposure (adjusted HR 1.19, 95% CI 1.06-1.33). Females were at greater risk for incident atrial fibrillation/flutter than males (females, HR 1.81, 95% CI 1.12-2.92; males, HR 1.15, 95% CI 1.03-1.30; P for interaction = .04).
CONCLUSION
Hyperthyroidism following a high iodine load was associated with an increased risk of incident atrial fibrillation/flutter, particularly among females. The observed sex-based differences should be confirmed in a more sex-diverse study sample, and the cost-benefit analysis of long-term monitoring for cardiac arrhythmias following iodine-induced hyperthyroidism should be evaluated.
Topics: Male; Female; Humans; Middle Aged; Aged; Adolescent; Atrial Fibrillation; Retrospective Studies; Hyperthyroidism; Atrial Flutter; Iodine; Thyrotropin; Risk Factors
PubMed: 37146179
DOI: 10.1210/clinem/dgad250 -
Journal of Atrial Fibrillation Aug 2020Dextrocardia is a malposition of the heart in the thoracic cavity. Dextrocardia has been known to cause diagnostic dilemmas with atypical presentations in acute coronary...
INTRODUCTION/BACKGROUND
Dextrocardia is a malposition of the heart in the thoracic cavity. Dextrocardia has been known to cause diagnostic dilemmas with atypical presentations in acute coronary syndrome, as well as technical challenges in patients who require interventions such as coronary catheterization, transcutaneous aortic valve replacement, ablation for arrhythmias, or pacemaker/defibrillator placement. Transcription factor Pitx2 has been shown to have a fundamental role during cardio-genesis, and its misexpression has been implicated in arrhythmogenesis and congenital heart diseases including visceral situs inversus. This association between congenital heart diseases and arrythmias is intriguing and need exploring. We aimed to quantify the likelihood of arrhythmias in patients with dextrocardia.
MATERIALS AND METHODS
A descriptive, retrospective study was conducted on the National Inpatient Sample (NIS) databases for the year 2016. Patients with dextrocardia and arrhythmias were selected based on appropriate diagnostic codes. We used propensity score-matching to assemble a matched cohort in which adults with dextrocardia and controls balanced on measured baseline characteristics. This was done to reduce the confounding effect of between-group imbalances on outcomes. Complex survey design, weights, and clustering were accounted for during analysis. Multivariate regression analysis was performed to determine the relationship of arrhythmias and length of hospitalization with dextrocardia.
RESULTS
The prevalence of arrhythmias in patients with dextrocardia was significantly higher than the control group. Overall, the odds of arrhythmia were higher for patients in the dextrocardia group when compared to a propensity matched control group [adjusted Odds ratio OR 2.60, Confidence Interval (CI) (1.67-4.06), p<0.001]. When looking at only principal/primary diagnosis on admission, the odds of an admitting diagnosis of arrhythmia were significantly higher in the dextrocardia group when compared to the matched cohort [adjusted OR 3.70, CI (1.26-10.89), p 0.02]. The increased odds of arrhythmia in dextrocardia patients were mostly accounted for by the increased odds of atrial fibrillation/atrial flutter [OR 3.06, CI (1.02-9.18), p 0.046] in these patients. No significant difference was found in the odds of other arrhythmias or the length of stay between the two groups.
CONCLUSION
In a large inpatient population, patients with dextrocardia were more likely to have arrhythmias especially atrial fibrillation/atrial flutter than patients without dextrocardia. Ours is the first study that investigates the clinical manifestations of molecular and embryologic associations between congenital heart disease and arrhythmias.
PubMed: 34950286
DOI: 10.4022/jafib.2222 -
ESC Heart Failure Dec 2021While the interplay between heart failure (HF) and atrial fibrillation (AF) has been extensively studied, little is known regarding HF and atrial flutter (AFL), which... (Review)
Review
While the interplay between heart failure (HF) and atrial fibrillation (AF) has been extensively studied, little is known regarding HF and atrial flutter (AFL), which may be managed differently. We reviewed the incidence, prevalence, and predictors of HF in AFL and vice versa, and the outcomes of treatment of AFL in HF. A systematic literature review of PubMed/Medline and EMBASE yielded 65 studies for inclusion and qualitative synthesis. No study described the incidence or prevalence of AFL in unselected patients with HF. Most cohorts enrolled patients with AF/AFL as interchangeable diagnoses, or highly selected patients with tachycardia-induced cardiomyopathy. The prevalence of HF in AFL ranged from 6% to 56%. However, the phenotype of HF was never defined by left ventricular ejection fraction (LVEF). No studies reported the predictors, phenotype, and prognostic implications of AFL in HF. There was significant variation in treatments studied, including the proportion that underwent ablation. When systolic dysfunction was tachycardia-mediated, catheter ablation demonstrated LVEF normalization in up to 88%, as well as reduced cardiovascular mortality. In summary, AFL and HF often coexist but are understudied, with no randomized trial data to inform care. Further research is warranted to define the epidemiology and establish optimal management.
Topics: Atrial Flutter; Catheter Ablation; Heart Failure; Humans; Stroke Volume; Ventricular Function, Left
PubMed: 34505352
DOI: 10.1002/ehf2.13526 -
Arquivos Brasileiros de Cardiologia Sep 2022PRKAG2 syndrome is a rare autosomal dominant disease, a phenocopy of hypertrophic cardiomyopathy characterized by intracellular glycogen accumulation. Clinical...
BACKGROUND
PRKAG2 syndrome is a rare autosomal dominant disease, a phenocopy of hypertrophic cardiomyopathy characterized by intracellular glycogen accumulation. Clinical manifestations include ventricular preexcitation, cardiac conduction disorder, ventricular hypertrophy, and atrial arrhythmias.
OBJECTIVE
To compare the clinical and electrophysiological characteristics observed in patients with atrial flutter, with and without PRKAG2 syndrome.
METHODS
An observational study comparing patients with atrial flutter: group A consisted of five patients with PRKAG2 syndrome from a family, and group B consisted of 25 patients without phenotype of PRKAG2 syndrome. The level of significance was 5%.
RESULTS
All patients in group A had ventricular preexcitation and right branch block, and four had pacemakers (80%). Patients in group A were younger (39±5.4 vs 58.6±17.6 years, p=0.021), had greater interventricular septum (median=18 vs 10 mm; p<0.001) and posterior wall thickness (median=14 vs 10 mm; p=0.001). In group A, four patients were submitted to an electrophysiological study, showing a fasciculoventricular pathway, and atrial flutter ablation was performed in tree. All patients in group B were submitted to ablation of atrial flutter, with no evidence of accessory pathway. Group B had a higher prevalence of hypertension, diabetes mellitus, coronary artery disease and sleep apnea, with no statistically significant difference.
CONCLUSION
Patients with PRKAG2 syndrome presented atrial flutter at an earlier age and had fewer comorbidities when compared to patients with atrial flutter without mutation phenotype. The occurrence of atrial flutter in young individuals, especially in the presence of ventricular preexcitation and familial ventricular hypertrophy, should raise the suspicion of PRKAG2 syndrome.
PubMed: 36102422
DOI: 10.36660/abc.20210792 -
Journal of the American College of... Jul 2020
Topics: Atrial Fibrillation; Atrial Flutter; Atrial Remodeling; Catheter Ablation; Humans
PubMed: 32703508
DOI: 10.1016/j.jacc.2020.06.004