The document summarizes procedures for various medical tests and examinations including:
1. Gastroscopy - examines the upper digestive tract using an endoscope, requires fasting for 6 hours prior.
2. Colonoscopy - examines the large intestine using a colonoscope, requires a clear liquid diet and laxative the day before.
3. Rectoscopy - examines the anal cavity and lower colon using a rectoscope.
It also outlines responsibilities of nurses in preparing patients for diagnostic tests and procedures.