Patients should seek medical review after heart surgery in case of: 1. infection in any part of the body; 2. unexplained fever, vomiting, diarrhea; 3. significant panic and shortness of breath with swelling; 4. frothy blood sputum; 5. bleeding tendency such as subcutaneous bleeding, hematuria, nosebleed and gum bleeding, blood in stool or dark black tar; 6. yellow staining of sclera and circumferential skin; 7. occurrence of new 8, sudden fainting, hemiplegia or lower limb pain, chills, pallor occur; 9, a woman is pregnant or planning to become pregnant; 10, increased menstrual blood or vaginal bleeding, or irregular; 11, a serious fall or suffer serious trauma; 12, pain, redness, swelling and discomfort in a certain area or any other abnormal signs or symptoms.