What should be noted before undergoing nasal endoscopy?

Generally, nasal endoscopy is a common otolaryngological examination method used to observe and diagnose the nasal cavity and sinuses. Before undergoing nasal endoscopy, it is important to fast, avoid drinking fluids, discontinue certain medications, and refrain from wearing contact lenses. Specific details are as follows:

1. Fasting and avoiding fluids

Patients should not eat or drink for 4–6 hours prior to nasal endoscopy. A stomach that is overly full, empty, or contains excessive fluid may interfere with the doctor's ability to clearly observe the interior of the nasal cavity and sinuses.

2. Discontinuation of medications

If a patient is currently taking any medication, they should stop under the guidance of a physician to avoid interference with the examination results. For patients taking oral adrenergic drugs, dosage reduction or discontinuation may be necessary before the procedure. Patients should inform their doctor in advance about all medications and dosages they are currently using.

3. Avoid wearing contact lenses

Wearing contact lenses during nasal endoscopy increases the risk of eye infection; therefore, patients should remove their contact lenses before the examination and inform the doctor accordingly.

In addition to the above, patients should maintain natural and smooth breathing. It is advisable to learn about the procedure and precautions beforehand and to follow the doctor’s recommendations and instructions. Nasal endoscopy helps doctors make accurate diagnoses, but some discomfort may occur during the procedure. Therefore, patients should try their best to overcome natural reflexes and cooperate fully with the doctor to complete the examination.