Precautions Before Undergoing Angiography

Before undergoing imaging examinations, there are several important precautions you should follow: 1. **Inform about allergies**: Be sure to tell your doctor if you have any history of iodine allergy or allergies to any other medications or dyes, as the contrast agent may contain iodine. 2. **Fasting and禁食禁水 (fasting and no water intake)**: Depending on the specific type of imaging (e.g., CT scan with contrast, cardiac angiography), you may be required to fast and avoid drinking water for several hours before the examination to ensure your gastrointestinal tract is empty and to reduce the risk of discomfort or complications. 3. **Medication adjustment**: If you are taking any medications, especially anticoagulants or diabetes medications, consult your doctor whether you need to adjust the dosage or temporarily stop taking them before or after the exam. 4. **Wear loose clothing**: Wear comfortable and easily removable clothing, as you may be asked to change into a hospital gown for certain imaging procedures. 5. **Bring relevant documents**: Carry your identification card, health insurance card, medical records, and any relevant prior imaging reports. 6. **Accompanying person**: If possible, arrange for a family member or friend to accompany you, as in some cases you may need to be observed for a period of time after the contrast examination. If you have any concerns or special conditions, be sure to discuss them with your doctor in advance.