A<unk> is a heart surgery that involves an incision into one or both ventricles. It is a component of many heart surgeries, including infarctectomy and many congenital heart defect surgeries. In the long-term, a prior<unk> can increase the risk of ventricular arrhythmia. Right<unk> often causes right bundle branch block if it is extensive. Modern congenital surgery techniques have reduced the long-term effects of<unk> and its repair.
Ventriculotomy 
Ventriculostomy
Cerebrospinal fluid diversion
Lumbar–peritoneal shunt
Decompressive craniectomy
Craniotomy
Endoscopic third ventriculostomy
Cerebral shunt