Contra-indications

• Decompensated heart failure
• Uncontrolled hypertension
• Refractory arrhythmia
• Severe contrast medium allergy
• Inability for patient cooperation
• Pregnancy
• Active infection
• Severe renal failure
• Coagulopathy / anticoagulant state ( high INR / PT)
• Severe hemorrhage
• Intoxication (digitalis)
• Electrolyte disturbance (hypokaliema)