Peri-operative ECG monitoring for cardiomyopathies patients undergoing surgery (I-C)When scheduled for intermediate or high-risk NCS, re-evaluation of LV function with echocardiography and NT-proBNP/BNP levels assessment, unless recently performed (I-B)Performing ECG and transthoracic echocardiogram before NCS, regardless of symptoms, in all patients aged < 65 years with a first-degree relative with CMP (I-C). The gene discussed is NPPB; the disease is cardiomyopathy.