best cardiac clinics in yelahanka 2D Echo dysfunction (especially diastolic dysfunction complications involve progressing to Heart Failure with Preserved Ejection Fraction (HFpEF), leading to symptoms like shortness of breath, fatigue, and swelling, alongside increased risks for pulmonary edema, atrial fibrillation, worsening kidney function, and major adverse cardiovascular events, particularly in diabetics or hypertensive patients. It signifies impaired heart relaxation, causing backup of pressure, which strains the lungs and heart, potentially causing severe issues like acute pulmonary edema.