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Aortic Valve Leaflets Reconstruction (Ozaki Procedure) in Aortic Valve Diseases

Autologous Pericardial Tricuspid Reconstruction of Aortic Valve Leaflets (Ozaki Procedure) in Aortic Valve Diseases

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04816851
Enrollment
1
Registered
2021-03-25
Start date
2021-03-30
Completion date
2023-07-30
Last updated
2025-01-20

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

Conditions

Aortic Valve Disease

Brief summary

Prospective Cohort Study aims at elaborating the outcomes of the Tricuspid Reconstruction of Aortic valve leaflets using autologous pericardium (Ozaki procedure) in the adult and paediatric patients. A very promising technique with the potential benefits of dodging oral anticoagulation, foreign material, and suitable for patients with small aortic annuli and in infectious endocarditis. Performing hemodynamic evaluation, assess the clinical implementation and report preliminary results at follow up .

Detailed description

Heart valve disease signifies a severe growing public health problem in developing countries, with aortic valve stenosis being the most common issue. Heart valve disease is commonly initiated by atherosclerotic degenerative processes, congenital anomalies, or rheumatic process. Aortic valve replacement is the gold standard in the treatment of patients with severe aortic stenosis and aortic regurgitation. Mechanical valves are favoured in younger patients (\<60 years) owing to longer life-time, whereas biological valves are used for elderly patients in order to evade oral anticoagulation. Options for aortic valve disease have improved in the last era including replacement, repair, and reconstructive options. A variety of creative techniques including leaflet extensions, neo-leaflet creation, resuspension or plication of prolapsing leaflets, and commissuroplasty to repair valves have been officially become skilled at, specially in pediatric population . In adults, the introduction of trans-catheter aortic valve inserting now permits treatment of degenerative aortic stenosis in the oldest and the highest risk patients. However, surgical treatment choices for pediatric patients with complex congenital aortic valve disease stay restricted. In recent years, much attention has been given to the Ozaki procedure, an alternative way of repairing aortic valve, involving the use of autologous pericardium for the aortic leaflet reconstruction. Diseased leaflets are removed carefully. The distance between each commissure is measured with invented sizing apparatus. The new leaflet of the size corresponding to the measured value is trimmed with an original template from glutaraldehyde-treated autologous pericardium. Finally, the annular margin of the pericardial leaflet was running sutured with each annulus. Commissural coaptation was secured with additional sutures. The coaptation of three new leaflets were always insured with direct vision.

Interventions

PROCEDUREOZAKI technique

an alternative way of repairing aortic valve, involving the use of autologous pericardium for the aortic leaflet reconstruction. Diseased leaflets are removed carefully. The distance between each commissure is measured with invented sizing apparatus. The new leaflet of the size corresponding to the measured value is trimmed with an original template from glutaraldehyde-treated autologous pericardium. Finally, the annular margin of the pericardial leaflet was running sutured with each annulus. Commissural coaptation was secured with additional sutures. The coaptation of three new leaflets were always insured with direct vision.

Sponsors

Assiut University
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Subject with AV disease. * Documented symptomatic moderate or greater aortic stenosis * small aortic annulus patients * A symptomatic aortic insufficiency patient with left ventricular dysfunction or significant left ventricular dilatation. * Patients with aortic regurgitation caused by: a dilated aortic annulus, conjoined cusp prolapse in bicuspid aortic valves (BAV), single cusp prolapse in tricuspid aortic valve (especially in paediatric population), and aortic valve cusp perforation from endocarditis. * Concomitant intervention of the aortic root, Concomitant intervention of the aortic arch, Concomitant valve surgery and Concomitant intervention at congenital anomaly.

Exclusion criteria

* Patients with previous aortic valve surgery. * missing informed consent * Participation in another clinical research.

Design outcomes

Primary

MeasureTime frameDescription
aortic transvalvular gradientat follow up frame through one yearanalyse aortic valve stenosis or insufficiency measured by transthoracic echocardiography

Secondary

MeasureTime frameDescription
Duration of hospitalizationaverage 5-7 daysnumber of days spent
number of patients developed complicationsthrough one yearthe study will be monitored for Endocarditis, thromboembolic manifestation, intracranial hemorrhage
conduction disturbances6 months post operativethe patients will be monitored for arrhythmia

Other

MeasureTime frameDescription
aortic valve re intervention or aortic regurgethrough one yearanalyse aortic valve stenosis or insufficiency measured by transthoracic echocardiography
LV dimensions and EF%.through one yearFollow up Echocardiography data such as LV dimensions and EF%.

Countries

Egypt

Outcome results

None listed

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