Trial of New Pretreatment Method in Transnasal Endoscopy

One-time Spray of Epinephrine (1cc) Plus 4% Lidocaine (4cc) is Sufficient Pretreatment Method for the Preparation of Transnasal Endoscopy

This study designed for compare efficacy of following two anesthetic method for transnasal endoscopy

• "Catheter-free method"
• "Catheter-insertion method"

1. Check of the medical history (both method)

   1. underlying systemic disease
   2. drug allergy
   3. anticoagulant or antiplatelet use

2. Premedication (both method)

   1. taking premedication contain dimethylpolysiloxane, pronase, sodium bicarbonate for improved endoscopic visualization
   2. spraying naphazolin acetate into nasal cavity for decrease secretion

3. Different anesthetic method for transnasal endoscopy

   1. "Catheter-free method" : spraying epinephrine into nasal cavity
   2. "Catheter-insertion method" : spraying both epinephrine and lidocaine into nasal cavity

Inclusion Criteria:

• Routine check-up patients

Exclusion Criteria:

• nasal operation, an allergy, a possibility of hemorrhage