Renal Denervation and pUlmonary Vein isolAtion With cryoabLation on Patients With Atrial Fibrillation and hypErtension

Hypertension Clinical Trial

Official title:

Renal Denervation and pUlmonary Vein isolAtion With cryoabLation on Atrial fIbrillation reCurrence Among Patients With Paroxysmal Atrial Fibrillation and Uncontrolled hypErtension: the DUAL-ICE Pilot Study

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT05024630
• Other study ID #: DUAL-ICE
• Status: Not yet recruiting
• Phase: N/A
• Start date: September 2021
• Est. completion date: June 2023

Study information

• Verified date: May 2021
• Source: Shanghai 10th People's Hospital
• Contact: Yi Zhang
• Phone: 18917686332
• Email: yizshcn[@]gmail.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The DUAL-ICE study is a single-center, prospective, randomized controlled study. The main purpose is to verify that renal artery cryoablation combined with pulmonary vein cryoablation can reduce the recurrence of atrial fibrillation in hypertensive patients with paroxysmal atrial fibrillation and substandard hypertension, and to further verify the clinical significance of one-stop cardio-renal combined cryoablation therapy for hypertension control.

Description:

Hypertension is a major risk factor for the high morbidity and mortality of cardiovascular diseases in the world. As a common arrhythmia, the autonomic nervous system plays an important role in the occurrence and maintenance of atrial fibrillation [1,2]. Enhancement of central sympathetic nervous system activity and stimulation of the efferent sympathetic nerve of the heart can promote the occurrence and development of atrial fibrillation [3]. Hypertension is an important risk factor for the occurrence of atrial fibrillation, and the incidence of complications such as heart failure, coronary heart disease and left ventricular hypertrophy is increased in patients with atrial fibrillation with poor blood pressure control [4-6]. Therefore, hypertension management in patients with atrial fibrillation is particularly important. However, a 2014 study of SYMPLICITY HTN-3 with a sample size of 535 people showed that RDN could not significantly reduce blood pressure [10], which put the study of RDN into a dilemma. Since then, researchers have optimized the study design, and some more detailed results have suggested a significant antihypertensive effect of RDN [11-13]. At present, there are few reports on the cryo-ablation of renal sympathetic nerve in the RDN studies, only the case of cryo-ablation of renal artery by Dr.Prochnau et al in Germany in 2014, which is still a technical blank in China [14]. At present, catheter ablation has been widely recognized in the treatment of paroxysmal atrial fibrillation. In terms of patient comfort and efficacy, cryo-ablation promoted in recent years shows greater advantages than radiofrequency ablation, which has the characteristics of less damage to surrounding tissues and faster recovery of vascular endothelial function. Therefore, the application of cryoablation in the field of RDN may be similar to the effect of pulmonary vein ablation. The purpose of our study was to investigate whether renal artery cryoablation combined with pulmonary vein cryoablation reduces the recurrence rate of atrial fibrillation compared with pulmonary vein cryoablation alone.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 30
• Est. completion date: June 2023
• Est. primary completion date: March 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 75 Years

Eligibility

Inclusion Criteria:

1. Age =18 years old, and <75 years old, gender is not limited;

2. Hypertensive patients with symptomatic paroxysmal atrial fibrillation to be treated by catheter ablation with substandard blood pressure. SBP = 150 mmHg or DBP = 90 mmHg in patients taking at least one antihypertensive drug;

3. Agree to participate and sign the informed consent.

Exclusion Criteria:

1. Cannot accept catheter ablation (such as thrombus in left atrium/left atrial appendage, recent myocardial infarction, stroke, etc.);

2. Patients with obvious bleeding tendency or unable to accept postoperative anticoagulation;

3. The anteroposterior diameter of left atrium indicated by echocardiography was =50mm;

4. A history of left atrial surgery or left atrial interventional therapy (including cryo-ablation, radiofrequency ablation, left atrial appendage occlusion, etc.);

5. NYHA grade IV congestive heart failure or LVEF <30%;

6. patients with valvular atrial fibrillation and secondary atrial fibrillation (such as uncontrolled hyperthyroidism, acute alcoholism, atrial fibrillation after cardiac surgery, etc.);

7. Patients with typical atrial fluttering or other supraventricular tachycardia (duration greater than 30s) confirmed by preoperative electrocardiogram or dynamic electrocardiogram;

8. Severe organic heart disease, including moderate to severe mitral insufficiency or stenosis, previous myocardial infarction, hypertrophic cardiomyopathy, etc.;

9. Patients with secondary hypertension;

10. Uncontrollable pulmonary hypertension;

11. Patients with glomerular filtration rate (EGFR) < 45ml/min/1.73m2 or patients with chronic kidney disease, nephrotic syndrome, polycystic kidney disease and other renal diseases were estimated according to MDRD calculation method;

12. Renal artery imaging (renal artery CTA) exclusion criteria:

1. inability to access the renal vascular system;

2. Diameter of renal aorta less than 4 mm or length less than 20 mm;

3. Hemodynamic or anatomical renal artery abnormalities or stenosis;

4. A history of previous renal artery interventions, including balloon angioplasty or stenting;

5. There are multiple unilateral renal aortas leading to the kidney;

13. Participated in other clinical studies and not yet enrolled in the group;

14. Women who are pregnant, lactating or preparing to become pregnant;

15. Life expectancy less than 1 year;

16. Other conditions that are not suitable for inclusion in this study as assessed by the researcher, such as mental disorders or psychological disorders;

17. A history of acute coronary events or percutaneous coronary stent intervention, a history of stroke or transient ischemic attack, and extensive atherosclerosis with intravascular thrombosis within the last 6 months;

18. Patients with ICD implantation history or CRT treatment history.

Related Conditions & MeSH terms

• Atrial Fibrillation
• Hypertension
• Paroxysmal Atrial Fibrillation

Intervention

Procedure:
• Renal artery cryoablation
Renal denervation were achieved by cryoablation of renal artery with cryoballoon.
• Pulmonary vein cryoablation
Pulmonary vein isolation was achieved by cryoablation of pulmonary veins with cryoballoon.
• Renal arteriography
Renal artery was examined by renal arteriography

Locations

Country	Name	City	State
China	Department of Cardiology, Shanghai Tenth People's Hospital	Shanghai	Shanghai

Sponsors (1)

Lead Sponsor	Collaborator
Shanghai 10th People's Hospital

Country where clinical trial is conducted

China, 

References & Publications (19)

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* Note: There are 19 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Differences in 24-hour dynamic blood pressure	The difference of 24h-SBP/DBP mean value (daytime, night and whole day) between the two groups at 6 and 12 months after procedure compared to the baseline level;	Within 12 months after procedure.
Other	Differences in self-measured blood pressure	Differences in mean self-measured blood pressure (SBP, DBP) from baseline in the two groups at 3, 6, 9 and 12 months after procedure;	Within 12 months after procedure.
Primary	Recurrence of atrial fibrillation	Atrial arrhythmia recurrence (documented atrial fibrillation, atrial tachycardia, or atrial flutter for =30 seconds during ambulatory monitoring or for =10 seconds on a 12-lead ECG), cardioversion, or use of class I or III antiarrhythmic drugs.	Within 12 months after procedure (outside the 90-day blanking period).
Secondary	Differences in office blood pressure	Differences in blood pressure (SBP, DBP) between the two groups at 6 and 12 months after procedure compared to the baseline;	Within 12 months after procedure.