After the heart surgery, there is a sharp upward shaking of the limbs, to rule out the existence of drug allergy, hypocalcemia, cardiac function abnormality and other problems. 1. Drug allergy: If there is a delayed allergy to iodine contrast agent after cardiac coronary angiography or stent implantation because iodine contrast examination is needed, the shaking of limbs may occur. Patients are advised to drink more water to accelerate the elimination of iodine contrast agent from the kidneys, and observe whether there is any rash, and use anti-allergy drugs if necessary, such as oral loratadine to fight allergies. 2. Hypocalcemia: patients with electrolyte disorders, such as hypocalcemia, the body can appear to shake upward, can also appear around the mouth or limbs numbness, etc., need to test electrolyte levels for further judgment. 3. Abnormal cardiac function: When the patient has heart failure and other problems, the above symptoms may also appear, and need to be diagnosed according to electrocardiogram, cardiac ultrasound and so on. After heart surgery, if you experience a sharp upward shaking of the heart, consult the cardiovascular department of a regular hospital to find out the cause of the problem.