Variability of the ventricular response in atrial fibrillation and prognosis in chronic nonischemic mitral reurgitation

1994 ◽  
Vol 74 (9) ◽  
pp. 906-911 ◽  
Author(s):  
Kenneth M. Stein ◽  
Jeffrey S. Borer ◽  
Clare Hochreiter ◽  
Richard B. Devereux ◽  
Paul Kligfield
2020 ◽  
Vol 13 (8) ◽  
pp. e234661
Author(s):  
Tahir Nazir ◽  
Mohiuddin Sharief ◽  
James Farthing ◽  
Irfan M Ahmed

Catheter ablation of atrial fibrillation (AF) has established itself as a safe and proven rhythm control strategy for selected patients with AF over the past decade. Thromboembolic complications of catheter ablation are becoming rare in anticoagulated patients with a risk of stroke reported as 0.3%. A particular challenge is posed by clinical presentation due to ischaemic stroke involving the posterior circulation following catheter ablation because of its substantial differences from the carotid territory stroke, making the timely diagnosis and treatment very difficult. It is crucial to keep an index of clinical suspicion in patients presenting with neurological deficits related to vertebrobasilar circulation following ablation. We describe the case of a man who presented with dizziness and palpitations after radiofrequency catheter ablation of AF. He was found to be in AF with a rapid ventricular response. His dizziness was initially attributed to the cardiac dysrhythmia. As his symptoms continued despite heart rate control, he underwent further investigations and was eventually diagnosed with a posterior circulation stroke resulting in left cerebellar infarction. He was treated with antiplatelet therapy and improved significantly over the following few days. We review and present an up-to-date brief literature review on the complications of catheter ablation of AF and describe pathophysiology, clinical features, diagnosis and treatment options for posterior circulation stroke after AF ablation. This case aims to raise awareness among clinicians about posterior circulation stroke after AF ablation.


2021 ◽  
Vol 10 (1) ◽  
pp. e001270
Author(s):  
Jonathan James Hyett Bray ◽  
Elin Fflur Lloyd ◽  
Firdaus Adenwalla ◽  
Sarah Kelly ◽  
Kathie Wareham ◽  
...  

BackgroundCommunity management of atrial fibrillation (AF) often requires the use of electrocardiographic (ECG) investigation. Patients discharged following treatment of AF with fast ventricular response (fast AF) can require numerous ECGs to monitor rate and/or rhythm control. Single-lead ECGs have been proposed as a more convenient and relatively accurate alternative to 12-lead ECGs for rate/rhythm management and also diagnosis of AF. We aimed to examine the feasibility of using the AliveCor single-lead ECG monitor for diagnosis and monitoring of AF in the community setting.MethodsDuring the course of 6 months, this evaluation of a clinical service improvement pathway used the AliveCor in management of patients requiring (1) follow-up ECGs for AF with previously documented rapid ventricular rate or (2) ECG confirmation of rhythm where AF was suspected. Twelve AliveCor devices provided to the acute community medical team were used to produce 30 s ECG rhythm strips (iECG) that were electronically sent to an overreading physician.ResultsSeventy-four patients (mean age 82 years) were managed on this pathway. (1) The AliveCor was successfully used to monitor the follow-up of 37 patients with fast AF, acquiring a combined total of 113 iECGs (median 1.5 ±3.75 per patient). None of these patients required a subsequent 12-lead ECG and this approach saved an estimate of up to £134.49 per patient. (2) Of 53 patients with abnormal pulses, the system helped identify 8 cases of new onset AF and 19 cases of previously known AF that had reverted from sinus back into AF.ConclusionsWe have demonstrated that the AliveCor system is a feasible, cost-effective, time-efficient and potentially safer alternative to serial 12-lead ECGs for community monitoring and diagnosis of AF.


2021 ◽  
Vol 10 (Supplement_1) ◽  
Author(s):  
E Marcusohn ◽  
O Kobo ◽  
M Postnikov ◽  
D Epstein ◽  
Y Agmon ◽  
...  

Abstract Funding Acknowledgements Type of funding sources: None. Background  The diagnosis of atrial fibrillation (AF) induced cardiomyopathy can be challenging. It relies on ruling out other causes of dilated cardiomyopathy, upon recovery of left ventricular ejection fraction (LVEF) following return to sinus rhythm (SR). Aim  The aim of this study was to identify clinical and echocardiographic predictors for developing new dilated cardiomyopathy in patients with AF or atrial flutter (AFL). Methods  This is a retrospective study conducted in a large tertiary care center. Patients that suffered deterioration of LVEF under 50% during AF demonstrated by pre-cardioversion trans-esophageal echocardiography (TEE) were compared to those with preserved LV function during AF. All patients had documented preserved LVEF at baseline (EF >50%) while in SR. Patients with a previous history of reduced LVEF during SR were excluded. Results From a total of 482 patients included in the final analysis, 80 (17%) patients had reduced LV function and 402 (83%) had preserved LV function during the pre-cardioversion TEE. Patients with reduced LVEF were more likely to be male and with a more rapid ventricular response during AF/AFL. A history of prosthetic valves was also identified as a risk factor for reduced LVEF. Patients with reduced LVEF also had higher incidence of TR and RV dysfunction. Conclusion In "real world" experience, male patients with rapid ventricular response during AF or AFL are more prone to LVEF reduction. Patients with prosthetic valves are also at risk for LVEF reduction during AF/AFL. Lastly, TR and RV dysfunction may indicate relatively long-standing AF with an associated reduction in LVEF.


2018 ◽  
Vol 43 (6) ◽  
pp. 855-859 ◽  
Author(s):  
D. E. Zimmerman ◽  
L. Jachim ◽  
A. Iaria ◽  
C. Brun ◽  
J. R. Covvey

Author(s):  
Joseph W. Woo ◽  
Gregory K. Kim

Cardiac comorbidities are oftentimes not limited to a single diagnosis, and multiple cardiac abnormalities may have to be considered when administering an appropriate anesthetic. Atrial fibrillation is an abnormal cardiac rhythm with uncoordinated depolarization of the atria causing an irregularly irregular ventricular response. Optimization requires heart rate control as well as anticoagulation, which must be considered prior to any surgical procedure. Percutaneous coronary intervention or coronary stents are placed in the coronary arteries in the face of coronary artery stenosis. The circumstances of when the stents were placed, as well as the type of stents that were used, will determine how long dual antiplatelet therapy must be undertaken and when elective surgery can take place.


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