In patients with non-valvular atrial fibrillation, mean left atrial appendage flow velocity >31 cm/s was an independent predictor of successful cardioversion (OR 2.8; 95% CI 1.5-5.4; P=0.0013).
Observational (n=408)
Yes
Does left atrial appendage flow velocity measured by TEE predict cardioversion success in patients with non-valvular atrial fibrillation?
Left atrial appendage flow velocity >31 cm/s measured by TEE is a strong independent predictor of successful cardioversion in patients with non-valvular atrial fibrillation.
Odds Ratio: 2.8 (95% CI 1.5–5.4)
p-value: p=0.0013
BACKGROUND: Echocardiographic parameters for predicting cardioversion outcome in patients with non-valvular atrial fibrillation are not accurately defined. OBJECTIVE: To evaluate the role of left atrial appendage flow velocity detected by transoesophageal echocardiography for prediction of cardioversion outcome in patients with non-valvular atrial fibrillation enrolled in a prospective. multicentre, international study. METHODS: Four hundred and eight patients (257 males, mean age: 66 +/- 10 years) with non-valvular atrial fibrillation lasting more than 48 h but less than 1 year underwent transthoracic echocardiography and transoesophageal echocardiography before either electrical (n=324) or pharmacological (n=84) cardioversion. RESULTS: Cardioversion was successful in restoring sinus rhythm in 328 (80%) and unsuccessful in 80 patients (20%). Mean left atrial appendage peak emptying flow velocity was significantly higher in patients with successful than in those with unsuccessful cardioversion (32.4 +/- 17.7 vs 23.5 +/- 13.6 cm x s(-1); P31 cm x s(-1) (P=0.0013, OR=2.8, CI 95%=1.5-5.4) and the left atrial diameter 56% and the absence of left atrial spontaneous echo contrast. CONCLUSION: In patients with non-valvular atrial fibrillation, measurement of the left atrial appendage flow velocity profile by transoesophageal echocardiography before cardioversion provides valuable information for prediction of cardioversion outcome.
Attila Pálinkás (Sat,) conducted a observational in Non-valvular atrial fibrillation (n=408). Mean left atrial appendage flow velocity >31 cm/s vs. Mean left atrial appendage flow velocity ≤31 cm/s was evaluated on Cardioversion success (restoring sinus rhythm) (OR 2.8, 95% CI 1.5-5.4, p=0.0013). In patients with non-valvular atrial fibrillation, mean left atrial appendage flow velocity >31 cm/s was an independent predictor of successful cardioversion (OR 2.8; 95% CI 1.5-5.4; P=0.0013).