Radiology Which of the following is the necessary pre-operative investigation which has to be done in a patient with Down’s syndrome posted for surgery? A CT Brain B Echocardiography C Ultrasound Abdomen D X-Ray cervical spine 💡 Explanation Which of the following is the necessary pre-operative investigation which has to be done in a patient with Down's syndrome posted for surgery? ✓ Correct Answer: B. Echocardiography