Clinical Trials Logo

Clinical Trial Details — Status: Active, not recruiting

Administrative data

NCT number NCT06003478
Other study ID # KY20232228-C-1
Secondary ID
Status Active, not recruiting
Phase
First received
Last updated
Start date July 21, 2023
Est. completion date May 30, 2024

Study information

Verified date August 2023
Source Xijing Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Liwen procedure is generally safe and effective in treating hypertrophic cardiomyopathy, but a small proportion of patients have complications after the operation. The goal of this observational study is to explore the incidence of postoperative complications of the Liwen procedure in hypertrophic cardiomyopathy patients underwent Liwen procedure in Xijing Hospital. The main question it aims to answer are: - What is the incidence of complications in HCM patients underwent Liwen Procedure during postoperative hospitalization and a short-term follow-up period? - What is the relevant factors of complications in HCM patients who underwent Liwen Procedure during postoperative hospitalization and short-term follow-up period? Can the complications of surgical patients during postoperative hospitalization be predicted? Participants have been evaluated using a variety of medical examinations before they underwent Liwen Procedure. Variants collected from medical examination and case history were used to analyze the association with each postoperative complication.


Recruitment information / eligibility

Status Active, not recruiting
Enrollment 486
Est. completion date May 30, 2024
Est. primary completion date May 30, 2024
Accepts healthy volunteers No
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria: 1. Subject with symptoms that limit daily activities (New York Heart Association functional class >II, exercise-induced syncope) despite adequate medical treatment or when medical treatment is not tolerated 2. Subject with a peak LVOT gradient=50 mm Hg 3. Subject volunteers for the Liwen procedure and received the procedure at the Hypertrophic Cardiomyopathy Center of Xijing Hospital. Exclusion Criteria: 1. Subject with a peak instantaneous Doppler LVOT gradient of <50 mm Hg 2. Subject with an indication for septal reduction therapy and other lesions requiring surgical intervention (e.g., mitral valve repair/replacement and papillary muscle intervention) 3. Subject has end-stage heart failure

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Percutaneous Intramyocardial Septal Radiofrequency Ablation for hypertrophic obstructive cardiomyopathy (Liwen Procedure)
Under transthoracic echocardiography (TTE) guidance, the puncture site is positioned at the apex. A guiding line is applied along the septal long axis and the radiofrequency ablation electrode needle(17G, Cool-tip™ RF Ablation System and Switching Controller;Medtronic, Minneapolis, MN, USA) pierced towards the hypertrophic anterior interventricular septum (AIVS) 8-10 mm from the subaortic valve. Each ablation lasts for up to 12 min and the ablation power is gradually increased from 30-40W. Then, the ablation needle is withdrawn 10 mm to prepare for the next application. Overall, 3-4 applications are performed in each patient. The ablation creates an area of thermal coagulative myocardial necrosis that appears as a hyperechogenic reflection detected by TTE. If deemed necessary, we repeat the procedure at the posterior interventricular septum (PIVS).

Locations

Country Name City State
China Ultrasound Medicine Department of Xijing Hospital, Fourth Military Medical University Xi'an Shaanxi

Sponsors (1)

Lead Sponsor Collaborator
Xijing Hospital

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Primary Postoperative Complications During Hospitalization Complications including symptomatic postoperative hypotension observed during hospitalization after PIMSRA. The symptomatic postoperative hypotension is defined as systolic blood pressure lower than 90 mmHg documented by invasive or noninvasive blood pressure measurement accompanied by symptoms including dizziness, and cephalalgia, without regard to the duration of hypotension. From date of procedure until the date of first documented occurrence of symptomatic hypotension, or date of dischargement from hospital, assessed up to 1 month.
Secondary Postoperative Complications During Follow-up Period Complications including chronic hypotension or orthostatic hypotension observed during the follow-up period. Chronic hypotension is defined as mean systolic/diastolic blood pressure lower than 90/60 mmHg documented by ambulatory blood pressure monitoring of more than 23 hours. Orthostatic hypotension is defined as a frop of standing and mean sitting SBP =20 mm Hg or diastolic BP =10 mm Hg, with complaining of dizziness or fall. From date of dischargement until the date of first diagnosis of chronic hypotension or orthostatic hypotension, assessed up to 1 year.
See also
  Status Clinical Trial Phase
Recruiting NCT05073094 - Esmolol for Myocardial Protection in Hypertrophic Obstructive Cardiomyopathy Phase 4
Completed NCT05850026 - Mitral Regurgitation in Hypertrophic Obstructive Cardiomyopathy: Fix it in a Simple, Effective and Durable Way!
Completed NCT04777188 - Speckle Tracking Echocardiography Analysis of Left Ventricular Myocardium After Percutaneous Intramyocardial Septal Radiofrequency Ablation for Hypertrophic Obstructive Cardiomyopathy N/A
Completed NCT02054221 - Surgical Treatment of Hypertrophic Obstructive Cardiomyopathy With Severe Mitral Insufficiency. N/A
Withdrawn NCT04905173 - Comparison of Squat-to-Stand Maneuver With Amyl Nitrite, Valsalva, and Exercise Stress Echocardiography in Inducing Latent Left Ventricular Outflow Obstruction in Hypertrophic Cardiomyopathy N/A
Completed NCT04066777 - The Effect of TASH in Patients With HOCM N/A
Terminated NCT02674958 - Mobilization of Endothelial Progenitor Cells and Aspirin Phase 3
Not yet recruiting NCT04329689 - Hyp Obst Cardiomyopathy N/A
Not yet recruiting NCT05025644 - Quantitative Assessment of Hypertrophic Obstructive Cardiomyopathy With Intraoperative Three-dimensional Transesophageal Echocardiography Under Provocative Dobutamine Stress Test Phase 4
Recruiting NCT05257772 - Electromechanically Optimised Right Ventricular Pacing In Hypertrophic Cardiomyopathy (EMORI-HCM) N/A
Recruiting NCT04470102 - Edge-to-edge Mitral Valve Repair in the Surgical Treatment for Hypertrophic Cardiomyopathy N/A
Recruiting NCT04355260 - The Clinical Research of the Safety and Effectiveness Evaluation for Using Echocardiography-guided Liwen RF Radiofrequency Ablation System to Treat Hypertrophic Obstructive Cardiomyopathy N/A
Recruiting NCT05957419 - Transapical Beating-Heart Septal Myectomy in Patient With Hypertrophic Obstructive Cardiomyopathy: a Multi-Center Study N/A
Recruiting NCT02492399 - Comparisonof Extended Myoectomy and Myoectomy by Morrow in Patients With Hypertrophic Obstructive Cardiomyopathy (HOCM) N/A
Completed NCT04686487 - SterEotactic AbLative Radiotherapy in PatiEnts With HypertrophiC ObstrucTive Cardiomyopathy N/A
Completed NCT05671367 - Association Between Microvascular Resistance and Outcomes in Patients With Obstructive Hypertrophic Cardiomyopathy
Completed NCT05687487 - Residual or Recurrent Obstruction After Septal Myectomy
Enrolling by invitation NCT05100420 - Hypertrophic Cardiomyopathy Registry, Biobank and Imaging Data Repository
Not yet recruiting NCT04275544 - Risk Factors of Postoperative Complications in HCM Patients
Recruiting NCT06167876 - Safety and Efficacy of Stereotactic Body Radiotherapy in the Treatment of Hypertrophic Obstructive Cardiomyopathy N/A