[Utilization of endocardiac electrocardiogram in ventriculoatrial shunt operation with slit valve catheter].
D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures / Q000295:instrumentation*; D004562:Electrocardiography / Q000295:instrumentation*; D006801:Humans; D006849:Hydrocephalus / Q000601:surgery*