Ignite Creation Date:
2025-12-25 @ 12:43 AM
Ignite Modification Date:
2025-12-30 @ 9:11 AM
Study NCT ID:
NCT05231967
Status:
COMPLETED
Last Update Posted:
2022-02-09
First Post:
2022-01-29
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Bursa Postgraduate Hospital Department of Cardiology
Sponsor:
Bursa Postgraduate Hospital
Organization:
Study Overview
Official Title:
The Predictive Value of the Left Atrial Kinetic Energy for Atrial Fibrillation Recurrence
Status:
COMPLETED
Status Verified Date:
2022-01
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Ensuring and maintaining normal sinus rhythm is critical for reducing negative outcomes in patients with atrial fibrillation (AF). Electrical direct current cardioversion is a frequently used method of restoring SR, but a significant proportion of patients later develop AF recurrence. Determining which of these patients is prone to recurrence is important for treatment modification. Left atrial kinetic energy (LAKE) is a parameter that shows left atrial mechanical function and can be calculated noninvasively by transthoracic echocardiography. LAKE is reduced in patients with AF recurrence.
Detailed Description:
Study population: The study was initiated after the ethics committee of Bursa Postgraduate Hospital approved the study protocol. A total of 120 consecutive patients aged 18 years and older who underwent successful electrical cardioversion following persistent atrial fibrillation (AF) were included in the study. Persistent AF was defined as continuous AF lasting longer than seven days in electrocardiography follow-up (9). Patients with significant valvular disease, previous valve surgery, severe left ventricular systolic dysfunction (ejection fraction \< 40%), severely dilated left atrium (\> 5 cm), previous ablation of atrial fibrillation, or paroxysmal atrial fibrillation were excluded from the study.
The patients were divided into two groups - patients who remained in sinus rhythm (SR) (group 1) and patients with AF recurrence (group 2) after one month of follow-up.
Echocardiography: All patients underwent routine transthoracic echocardiography (TTE) prior to cardioversion and transoesophageal echocardiography (TEE) (EPIQ 7 Echocardiography Machine, Philips Ultrasound, Netherlands) to exclude left atrial and left atrial appendage thrombus. TTE was repeated in patients who remained in SR 24 hours after cardioversion. All standard measurements were taken from the parasternal long and short axes and apical two- and four-chamber windows. All assessments and measurements were made according to the American Society of Echocardiography (ASE) guidelines (10).
Left ventricular ejection fraction (LVEF) was calculated according to the modified biplane Simpson method (10). Mitral flow velocities were recorded from the apical four-chamber view with a sample volume of 5 mm placed at the level of the mitral valve tips using pulsed-wave Doppler (PWD). Peak early (E) and late (A) mitral entry velocities were recorded.
LAKE (left atrial kinetic energy) values were calculated at the 24th hour after cardioversion. LAKE was defined as 0.5 × left atrium stroke volume (cm³, volume at the beginning of left atrial systole - left atrium minimal volume) × 1.06 (g/cm³, blood density) × (peak A velocity)² (cm/sec, transmitral PWD A velocity) (8).
The patients were divided into two groups - patients who remained in sinus rhythm (SR) (group 1) and patients with AF recurrence (group 2) after one month of follow-up.
Echocardiography: All patients underwent routine transthoracic echocardiography (TTE) prior to cardioversion and transoesophageal echocardiography (TEE) (EPIQ 7 Echocardiography Machine, Philips Ultrasound, Netherlands) to exclude left atrial and left atrial appendage thrombus. TTE was repeated in patients who remained in SR 24 hours after cardioversion. All standard measurements were taken from the parasternal long and short axes and apical two- and four-chamber windows. All assessments and measurements were made according to the American Society of Echocardiography (ASE) guidelines (10).
Left ventricular ejection fraction (LVEF) was calculated according to the modified biplane Simpson method (10). Mitral flow velocities were recorded from the apical four-chamber view with a sample volume of 5 mm placed at the level of the mitral valve tips using pulsed-wave Doppler (PWD). Peak early (E) and late (A) mitral entry velocities were recorded.
LAKE (left atrial kinetic energy) values were calculated at the 24th hour after cardioversion. LAKE was defined as 0.5 × left atrium stroke volume (cm³, volume at the beginning of left atrial systole - left atrium minimal volume) × 1.06 (g/cm³, blood density) × (peak A velocity)² (cm/sec, transmitral PWD A velocity) (8).
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: