45yrs old man with breathlessness and chest pain since 1yrs

Nam_xxx
Age/sex_45yr /m
Occupation_ former
Add_xx
45yrs old man with breathlessness with chest pain since 1yrs
C/O_
Breathlessness since 1yrs...with tiredness
Lt side chest pain...heavyness in chest
Vertigo during walking since 1month
Pain in leg and thigh...since 1yr
Sometime pt complaining abdominal discomfort...

Thirst_normal
Sleep_normal
urine_normal quantity n color
Motion_  sometime bloody stool 5month back
Smoking _ left 20yrs back
Tobacco _occasionally
 Past/history ___

Investigation 

ECG__ no specific finding