Study: NCT05677516

Intervention type: PROCEDURE
Intervention: ablation- pulmonary vain isolation- radiofrequency ablation (RF)
Description: Pulmonary vein isolation is the electrical isolation of the pulmonary veins from the left atrium. It can be performed using the radiofrequency ablation (RF) technique. The procedure begins with venous access through the femoral vein through which catheters and electrodes are inserted. Then, the left atrium is accessed through a transseptal puncture and the pulmonary veins are isolated with a RF electrode. RF procedures are performed under local anesthesia. The procedure is performed using X-ray fluoroscopy.

Intervention type: PROCEDURE
Intervention: Electrophysiological study (EPS)
Description: In the electrophysiological study (EPS), electrophysiological parameters such as the recovery time of sinus rhythm (SNRT), Wenckebach's point, AH and HV intervals are measured. The examination begins with venous access through the femoral vein. Then, diagnostic electrodes are inserted into the right atrium, right ventricle and coronary sinus, with which electrophysiological tests are performed. The SNRT is measured after 60 seconds of atrial pacing with a 600ms cycle. The Wencjabach point is determined by stimulation in the incremental protocol. AV and HV intervals are measured during sinus rhythm using an electrode placed on the bundle of His. EPS is performed under local anesthesia. EPS will be performed both before and after pulmonary vein isolation. In patients with atrial fibrillation, during ablation, only the HV interval will be measured.~The procedure is performed using X-ray fluoroscopy.

Intervention type: PROCEDURE
Intervention: Electrophysiological study (EPS)
Description: In the electrophysiological study (EPS), electrophysiological parameters such as the recovery time of sinus rhythm (SNRT), Wenckebach's point, AH and HV intervals are measured. The examination begins with venous access through the femoral vein. Then, diagnostic electrodes are inserted into the right atrium, right ventricle and coronary sinus, with which electrophysiological tests are performed. The SNRT is measured after 60 seconds of atrial pacing with a 600ms cycle. The Wencjabach point is determined by stimulation in the incremental protocol. AV and HV intervals are measured during sinus rhythm using an electrode placed on the bundle of His. EPS is performed under local anesthesia. EPS will be performed both before and after pulmonary vein isolation. In patients with atrial fibrillation, during ablation, only the HV interval will be measured.~The procedure is performed using X-ray fluoroscopy.

Intervention type: PROCEDURE
Intervention: Electrophysiological study (EPS)
Description: In the electrophysiological study (EPS), electrophysiological parameters such as the recovery time of sinus rhythm (SNRT), Wenckebach's point, AH and HV intervals are measured. The examination begins with venous access through the femoral vein. Then, diagnostic electrodes are inserted into the right atrium, right ventricle and coronary sinus, with which electrophysiological tests are performed. The SNRT is measured after 60 seconds of atrial pacing with a 600ms cycle. The Wencjabach point is determined by stimulation in the incremental protocol. AV and HV intervals are measured during sinus rhythm using an electrode placed on the bundle of His. EPS is performed under local anesthesia. EPS will be performed both before and after pulmonary vein isolation. In patients with atrial fibrillation, during ablation, only the HV interval will be measured.~The procedure is performed using X-ray fluoroscopy.

Intervention type: PROCEDURE
Intervention: Electrophysiological study (EPS)
Description: In the electrophysiological study (EPS), electrophysiological parameters such as the recovery time of sinus rhythm (SNRT), Wenckebach's point, AH and HV intervals are measured. The examination begins with venous access through the femoral vein. Then, diagnostic electrodes are inserted into the right atrium, right ventricle and coronary sinus, with which electrophysiological tests are performed. The SNRT is measured after 60 seconds of atrial pacing with a 600ms cycle. The Wencjabach point is determined by stimulation in the incremental protocol. AV and HV intervals are measured during sinus rhythm using an electrode placed on the bundle of His. EPS is performed under local anesthesia. EPS will be performed both before and after pulmonary vein isolation. In patients with atrial fibrillation, during ablation, only the HV interval will be measured.~The procedure is performed using X-ray fluoroscopy.

Intervention type: DIAGNOSTIC_TEST
Intervention: Holter EKG
Description: Holter ECG is a 24-hour, non-invasive ECG recording using a portable recorder and electrodes placed on the patient's chest. The Holter ECG will be performed three times: on the day preceding and on the first day after pulmonary veins isolation, and after 3 months of observation.

Intervention type: DIAGNOSTIC_TEST
Intervention: Holter EKG
Description: Holter ECG is a 24-hour, non-invasive ECG recording using a portable recorder and electrodes placed on the patient's chest. The Holter ECG will be performed three times: on the day preceding and on the first day after pulmonary veins isolation, and after 3 months of observation.

Intervention type: DIAGNOSTIC_TEST
Intervention: Holter EKG
Description: Holter ECG is a 24-hour, non-invasive ECG recording using a portable recorder and electrodes placed on the patient's chest. The Holter ECG will be performed three times: on the day preceding and on the first day after pulmonary veins isolation, and after 3 months of observation.

Intervention type: DIAGNOSTIC_TEST
Intervention: Holter EKG
Description: Holter ECG is a 24-hour, non-invasive ECG recording using a portable recorder and electrodes placed on the patient's chest. The Holter ECG will be performed three times: on the day preceding and on the first day after pulmonary veins isolation, and after 3 months of observation.

Intervention type: OTHER
Intervention: Questionnaire
Description: The survey will be conducted after 3 months of observation and will include questions about the number of hospitalizations due to atrial fibrillation, heart palpitations, changes in pharmacotherapy.

Intervention type: OTHER
Intervention: Questionnaire
Description: The survey will be conducted after 3 months of observation and will include questions about the number of hospitalizations due to atrial fibrillation, heart palpitations, changes in pharmacotherapy.

Intervention type: OTHER
Intervention: Questionnaire
Description: The survey will be conducted after 3 months of observation and will include questions about the number of hospitalizations due to atrial fibrillation, heart palpitations, changes in pharmacotherapy.

Intervention type: OTHER
Intervention: Questionnaire
Description: The survey will be conducted after 3 months of observation and will include questions about the number of hospitalizations due to atrial fibrillation, heart palpitations, changes in pharmacotherapy.