Comparison of topical lidocaine plus epinephrine versus bupivacaine plus epinephrine for pain control during diagnostic nasal endoscopy

INTERVENTION: Intervention1: Group B: Topical 0.25% bupivacaine with epinephrine administered using three nasal patties placed in each nasal cavity for 10 minutes before diagnostic nasal endoscopy. Control Intervention1: Group A: Topical 4% lidocaine with epinephrine administered using three nasal patties placed in each nasal cavity for 10 minutes before diagnostic nasal endoscopy. CONDITION: PRIMARY OUTCOME: Pain intensity measured using Visual Analogue ; Scale immediately after completion of diagnostic nasal endoscopy.Timepoint: Pain intensity measured using Visual Analogue ; Scale immediately after completion of diagnostic nasal endoscopy. SECONDARY OUTCOME: Duration of diagnostic nasal endoscopy.Timepoint: During procedure Ease of performing diagnostic nasal endoscopy as rated by the surgeon using a 5 point Likert scale.Timepoint: Immediately after completion INCLUSION CRITERIA: Patients requiring diagnostic nasal endoscopy. Able to provide written informed consent.