Role of Transesophageal Echocardiography Among Patients With Atrial Fibrillation Undergoing Electrophysiology Testing

External or internal shocks administered to terminate ventricular arrhythmias as a part of electrophysiology or implantable cardioverter-defibrillator testing, can inadvertently cardiovert atrial fibrillation (AF). Moreover, anticoagulation therapy is often withheld in these patients in anticipation...

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Vydáno v:The American journal of cardiology Ročník 104; číslo 9; s. 1256 - 1258
Hlavní autoři: Priester, Rory, Bunting, Troy, Usher, Bruce, Chiaramida, Salvatore, Taylor, Marian H., Gregg, David, Sturdivant, J. Lacy, Leman, Robert B., Wharton, J. Marcus, Gold, Michael R.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY Elsevier Inc 01.11.2009
Elsevier
Elsevier Limited
Témata:
Aged
Anticoagulants - therapeutic use
Atrial Fibrillation - therapy
Biological and medical sciences
Cardiac arrhythmia
Cardiac dysrhythmias
Cardiology
Cardiology. Vascular system
Cardiovascular
Cardiovascular system
Defibrillators
Defibrillators, Implantable
Diagnostic tests
Echocardiography, Transesophageal
Electric Countershock - methods
Electrophysiologic Techniques, Cardiac
Female
Heart
Heart Atria - diagnostic imaging
Humans
Investigative techniques, diagnostic techniques (general aspects)
Male
Medical sciences
Prospective Studies
Thrombosis
Thrombosis - diagnostic imaging
Thrombosis - prevention & control
Ultrasonic investigative techniques
Sonography
Human
Echocardiography
Arrhythmia
Heart disease
Atrial fibrillation
Electrophysiology
Cardiovascular disease
Patient
Circulatory system
Cardiology
Excitability disorder
ISSN:0002-9149, 1879-1913, 1879-1913
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Shrnutí:External or internal shocks administered to terminate ventricular arrhythmias as a part of electrophysiology or implantable cardioverter-defibrillator testing, can inadvertently cardiovert atrial fibrillation (AF). Moreover, anticoagulation therapy is often withheld in these patients in anticipation of an invasive procedure. The risk of embolic events during these procedures has not been well described. Accordingly, the present study was a prospective evaluation of the incidence of left atrial (LA) thrombus and AF cardioversion among patients undergoing ventricular arrhythmia assessment. Transesophageal echocardiography was routinely performed on 44 consecutive patients in AF with subtherapeutic anticoagulation undergoing electrophysiology or implantable cardioverter-defibrillator testing. Arrhythmia induction was not performed when LA thrombus was present. The incidence and clinical predictors of thrombus, the inadvertent cardioversion of AF, and adverse events related to the procedure were assessed during the subsequent 4 to 6 weeks. Left atrial thrombus was observed in 12 patients (27%). Sinus rhythm was restored in 29 patients (91%), at least transiently, who underwent testing with a shock delivered. No adverse neurologic or hemorrhagic complications were observed. Univariate analysis identified no predictors of LA thrombus or cardioversion to sinus rhythm. In conclusion, LA thrombus and cardioversion to sinus rhythm are common among patients with AF undergoing an evaluation of ventricular arrhythmias. Transesophageal echocardiography performed before the procedure in patients with subtherapeutic anticoagulation is warranted to minimize embolic complications. This strategy appears to be a safe method to guide diagnostic testing in this patient population.
Bibliografie:ObjectType-Article-1
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ISSN:0002-9149
1879-1913
1879-1913
DOI:10.1016/j.amjcard.2009.06.039