Innovative Products for Cardiac Surgeons
SVR Procedure Technique
Clinical Articles
Who Can Benefit from SVR?
Patient Selection Considerations
SVR System Reimbursement Reference
Case Study
Why Elliptical? Law of Laplace
Events
Chase Medical markets innovative specialty devices to cardiac surgeons and hospitals throughout the U.S. and internationally.
The SVR System for heart failure patients is just one example of Chase Medical’s innovative product development.
The Surgical Ventricular Restoration (SVR) ® procedure is a comprehensive surgical technique utilizing the Mannequin device to
treat patients suffering from ischemic heart failure. This comprehensive surgical procedure enables surgeons to create an
elliptical ventricle, with repeatable and optimal outcomes every time. Patient after patient.
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The Dor Procedure: What has changed after fifteen years of clinical practice Lorenzo Menicanti and Marisa Di Donato. The Dor Procedure: What has changed after fifteen years of clinical practice. The Journal of Thoracic and Cardiovascular Surgery. 2002;124(5): 886–890. |
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Ventricular restoration aids ischemic cardiomyopathy Robert Finn. Ventricular restoration aids ischemic cardiomyopathy. Thoracic Surgery News. 2008;4(2): 10. |
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Surgical therapy for ischemic heart failure: Single-center experience with surgical anterior ventricular restoration Lorenzo Menicanti, Serenella Castelvecchio, Marco Ranucci, et al. Surgical therapy for ischemic heart failure: Single-center experience with surgical anterior ventricular restoration. The Journal of Thoracic and Cardiovascular Surgery. 2007;134(2): 433-441. |
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Impact of surgical ventricular restoration on diastolic function: Implications of shape and residual ventricular size Serenella Castelvecchio, Lorenzo Menicanti, Marco Ranucci, Marisa Di Donato. Impact of surgical ventricular restoration on diastolic function: Implications of shape and residual ventricular size. The Annals of Thoracic Surgery. 2008;86: 1849-1855. |
- Patients with a previous myocardial infarction (MI)
- Patients with increased end-diastolic volumes
- Patients with a decreased ejection fraction and a dilated left ventricle
- Patients who are experiencing heart failure symptoms, even with medical therapy
- Patients who were previously revascularized and are now experiencing heart failure symptoms
- Patients on the heart transplant list
- Patients undergoing resynchronization therapy
- Patients referred for CABG with a dilated left ventricle
- Previous MI in antero septal portion of the ventricle – this is usually from a previous MI in a branch of the Left
Anterior Descending (LAD) artery - End-diastolic volume (EDVI) >100 ml/m2
- Asynergy of >35% - the area of akinetic/dyskinetic tissue versus viable tissue
- Good lateral wall motion
- Good basal contraction
- Good right ventricle
- A severe right ventricular dysfunction as assessed by TAPSE (tricuspid annulus plane
systolic excursion) less than 10 mm - Infarcts in two or more distinct areas of the ventricle
- Systolic pulmonary pressure >60mmHg (when not associated with severe mitral regurgitation)
- Asynergy of >60% - more than 60% of the tissue is akinetic/dyskinetic
the SVR procedure utilizing a patch and a shaping device, such as the Mannequin.
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SVR Case Study 48 year old previously stented patient, requiring no further revascularization, benefits from Surgical Ventricular Restoration. Click here to view SVR Case Study. |
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Why Elliptical? Law of Laplace |
In the HF patient, all of the variables (pressure, ventricle radius and wall thickness) conspire to increase wall stress. The left
ventricular pressure rises as more volume enters the ventricle. The radius increases as the ventricle dilates into a sphere to
accommodate the increasing volume. The wall thins as the ventricle dilates.
Restoring the size of the ventricle to near its “normal” size (reducing its volume) is one factor in reducing the wall stress.
More importantly, restoring the ventricle to an elliptical chamber is a critical factor to reduce wall stress by decreasing the
radius of the dilated ventricle.
Correctly orienting all of the constituent components of the ventricle, i.e. aortic valve, mitral valve apparatus and papillary
muscles, helps ensure optimal performance.
The following is a list of meetings where Chase Medical will be appearing over the next year. Please check back periodically
for updates and more information.
The European Association for Cardio-Thoracic Surgery (EACTS) 24th Annual Meeting
September 11 – 15, 2010
Geneva, Switzerland
www.eacts.org
Visit us at Chase Booth #1572
Surgical Ventricular Restoration (SVR) Education Program
November 3-4, 2010
San Donato Hospital
Milan, Italy
Click here for Itinerary
Click here for Registration
The Society of Thoracic Surgeons (STS) 47th Annual Meeting
January 31-February 2, 2011
San Diego, CA
www.sts.org
Visit us at Chase Booth # 708
American Association for Thoracic Surgery (AATS) 91st Annual Meeting
May 7-11, 2011
Philadelphia, PA
www.aats.org
Visit us at Chase Booth # 326
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