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Efficacy and Safety of Catheter Ablation of Atrial Fibrillation in Patients With Thyroid Hormone Stabilization

Cardiovascular Medicine Department of Second Affiliated Hospital of Jiaxing University

Status
Enrolling by invitation
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06452823
Acronym
SQUIRREL
Enrollment
200
Registered
2024-06-11
Start date
2024-05-01
Completion date
2026-06-30
Last updated
2024-06-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atrial Fibrillation and Flutter, Hyperthyroidism, Hypothyroidism

Keywords

Atrial Fibrillation and Flutter, Hyperthyroidism, Hypothyroidism, catheter radiofrequency ablation

Brief summary

Patients with hyperthyroidism or hypothyroidism are often combined with atrial fibrillation, but after the stabilization of thyroid hormone levels after treatment, the patients' atrial fibrillation still persists. Radiofrequency ablation of the atrial fibrillation as one of the treatment options for atrial fibrillation has been widely used in the clinic, and has significant efficacy in maintaining sinus rhythm, improving cardiac function, and improving the prognosis of patients. However, there is a lack of clinical monitoring data on radiofrequency ablation of atrial fibrillation in patients who have combined thyroid dysfunction and have stabilized their thyroid hormone levels after treatment.

Detailed description

In patients recommended by guidelines for atrial catheter radiofrequency ablation of atrial fibrillation, catheter radiofrequency ablation was performed after exclusion of contraindications, and was observed and compared between patients with comorbid pre-existing thyroid hormone disorders and patients without comorbid atrial fibrillation after radiofrequency ablation:1: time to sexual rhythm maintenance: incidence of cardiac-related complications and incidence of noncardiac-related complications within 3 months and 1 year,2: walking distance on a six-minute walk test within 3 months,1 year, comparison of percent left ventricular ejection fraction, and comparison of left ventricular diastolic diameter at the time 3 months,1 year,.To comprehensively assess the efficacy and safety of catheterized radiofrequency ablation of atrial fibrillation in patients with comorbidities of prior thyroid hormone disorders.

Interventions

PROCEDURECatheter Ablation

catheter radiofrequency ablation therapy for atrial fibrillation involves the use of ablative energy to destroy the cardiomyocytes at the opening of the pulmonary veins, which blocks the electrical conduction pathway between the pulmonary veins and the left atrium, so that atrial fibrillation no longer occurs.

Sponsors

The Second Affiliated Hospital of Jiaxing University
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
45 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

Atrial Fibrillation Requiring Catheterized Radiofrequency Ablation (Class I Recommendation)

Exclusion criteria

Atrial Fibrillation Requiring Catheterized Radiofrequency Ablation Class I Recommendation With Coexisting Contraindications

Design outcomes

Primary

MeasureTime frameDescription
Non-Cardiac Related Complications3 month and 1year after cardiac radiofrequency ablationNeurological Complications Asymptomatic cerebral embolism TIA Perioperative stroke Permanent phrenic nerve injury Digestive Complications Esophageal Injury Gastric Hyperdynamics Atrioesophageal Fistula Vascular Complications Hematoma Arteriovenous fistula Pseudoaneurysm Severe pulmonary stenosis
Recurrence of atrial fibrillation Recurrence of atrial fibrillation Recurrence of atrial fibrillation Recurrence of atrial fibrillation Recurrence of atrial fibrillation Recurrence of atrial fibrillation Recurrence of atrial fibrillation3 month and 1year after cardiac radiofrequency ablationInability to maintain sinus rhythm, recurrent atrial fibrillation or atrial flutter
Postoperative heart-related complications3 month and 1year after cardiac radiofrequency ablationCardiac perforation/cardiac tamponade Coronary artery stenosis/occlusion Pericarditis Atrial stiffness syndrome Coronary artery air embolism Pseudoaneurysm Severe pulmonary stenosis

Secondary

MeasureTime frameDescription
LVEF%3 month and 1year after cardiac radiofrequency ablationPer-beat output as a percentage of ventricular end-diastolic volume (cardiac preload)
6-minute walk test3 month and 1year after cardiac radiofrequency ablationLeft atrial diastolic diameter
Left Atrial Internal Diameter3 month and 1year after cardiac radiofrequency ablationLeft atrial anteroposterior and superior-inferior diameters

Other

MeasureTime frameDescription
Thyroid hormone levels3 month and 1year after cardiac radiofrequency ablationhyperthyroidism Hypothyroidism A change in thyroid hormone status from stable to unstable.

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026