Vsds - PowerPoint PPT Presentation

Ventricular Septal Defects

Ventricular Septal Defects. 1 in 1000 live births 50% associated with other congenital malformations First described by Roger in 1879, hence small VSDs are also known as the ‘maladie de Roger’. First VSD closed under direct vision by Lillehei in 1955. Ventricular Septum. Components

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Hydraulically Operated Variable Clearance Pocket

Hydraulically Operated Variable Clearance Pocket. Capacity control. Stepped control Cylinder unloading Volumetric control Stepless control Speed control (VSDS) Volumetric control manually operated Reverse flow control By-pass control. HOVCP versus other ways of capacity controls.

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177 views • 14 slides

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