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March 19, 2010EP Europace

Pre-procedural transoesophageal echocardiography detected left atrial thrombus in 1.9% of patients undergoing atrial fibrillation ablation, with no thrombi found in those without clinical risk factors.

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Why the study?

What is the incidence and what are the clinical predictors of left atrial thrombus detected by pre-procedural transoesophageal echocardiography in patients undergoing atrial fibrillation ablation?

Population

Patients undergoing atrial fibrillation ablation, treated with warfarin for at least 4 weeks prior to…

Design

Cohort

Key result

Pre-procedural transoesophageal echocardiography detected left atrial thrombus in 1.9% of patients undergoing atrial fibrillation ablation, with no thrombi found in those without clinical risk factors.

Authors

JMJ. W. McCreadyLNL. NunnPLPier D. Lambiase

Discussion

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Member takes

Overview

May support selective omission of pre-procedural TEE in low-risk AF ablation patients; leaves open need for randomized confirmation.

Study Design

Type

Cohort (n=635)

Structured PICO

What is the incidence and what are the clinical predictors of left atrial thrombus detected by pre-procedural transoesophageal echocardiography in patients undergoing atrial fibrillation ablation?

P
Population
Patients undergoing atrial fibrillation (AF) ablation, treated with warfarin for at least 4 weeks prior to ablation (substituted with therapeutic dalteparin 3 days before the procedure), n=635 procedures.
I
Intervention
Pre-procedural transoesophageal echocardiography (TOE)
O
Outcome
Incidence of left atrial (LA) thrombussurrogate

Pre-procedural transoesophageal echocardiography to screen for left atrial thrombus prior to atrial fibrillation ablation may be safely omitted in patients without clinical risk factors for stroke.

Cite This Study

McCready et al. (2010) conducted a cohort in Atrial fibrillation (n=635). Transoesophageal echocardiography (TOE) was evaluated on Incidence of left atrial thrombus. Pre-procedural transoesophageal echocardiography detected left atrial thrombus in 1.9% of patients undergoing atrial fibrillation ablation, with no thrombi found in those without clinical risk factors.

synapsesocial.com/papers/6a0e4dd6bc348c84f2fd99a9https://doi.org/10.1093/europace/euq074
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