Prospective Study on Prognosis of Cardiac Resynchronized Therapy (CRT), Implantable Cardioverter Defibrillator (ICD) Implantation in Patients With Congestive Heart Failure (CHF)

Transthoracic echocardiography (TTE)

Time frame: before enrollment

Transthoracic echocardiography (TTE)

Time frame: 12 month later afer enrollment

EKG

for Ventricular arrhythmia events

Time frame: before enrollment

EKG

for Ventricular arrhythmia events

Time frame: 1 month later after enrollment

EKG

for Ventricular arrhythmia events

Time frame: 6 month later after enrollment

EKG

for Ventricular arrhythmia events

Time frame: 12 month later after enrollment

NYHA(New York Heart Association) evaluation

For functional capacity \- The New York Heart Association (NYHA) Functional Classification provides a simple way of classifying the extent of heart failure. It places patients in one of four categories based on how much they are limited during physical activity; the limitations/symptoms are in regard to normal breathing and varying degrees in shortness of breath and/or angina.

Time frame: before enrollment

NYHA(New York Heart Association) evaluation

For functional capacity \- The New York Heart Association (NYHA) Functional Classification provides a simple way of classifying the extent of heart failure. It places patients in one of four categories based on how much they are limited during physical activity; the limitations/symptoms are in regard to normal breathing and varying degrees in shortness of breath and/or angina.

Time frame: 1 month later after enrollment

NYHA(New York Heart Association) evaluation

For functional capacity \- The New York Heart Association (NYHA) Functional Classification provides a simple way of classifying the extent of heart failure. It places patients in one of four categories based on how much they are limited during physical activity; the limitations/symptoms are in regard to normal breathing and varying degrees in shortness of breath and/or angina.

Time frame: 6 month later after enrollment

NYHA(New York Heart Association) evaluation

For functional capacity \- The New York Heart Association (NYHA) Functional Classification provides a simple way of classifying the extent of heart failure. It places patients in one of four categories based on how much they are limited during physical activity; the limitations/symptoms are in regard to normal breathing and varying degrees in shortness of breath and/or angina.

Time frame: 12 month later after enrollment

6 minute walking test

for functional capacity

Time frame: before enrollment

6 minute walking test

for functional capacity

Time frame: 12 month later afer enrollment