COMPARISON OF 4% VERSUS 10% TOPICAL LIGNOCAINE SPRAY ON COUGH SEVERITY ACCESSED BY VISUAL ANALOGUE SCORE DURING FLEXIBLE BRONCHOSCOPY. A RANDOMIZED CONTROLLED TRIAL.

INTERVENTION: 4% Lignocaine Spray,10% Lignocaine Spray Active Comparator Drug,Active Comparator Drug Participants will receive 2 to 3 puffs of 4 percent lignocaine spray via the bronchoscope for cough suppression during bronchoscopy. The spray will be applied to the oropharyn Xbefore the procedure. Additional lignocaine may be administered if required according to clinical protocol.,Participants will receive 2 to 3 puffs of 10 percent lignocaine spray via the bronchoscope for cough suppression during bronchoscopy. The spray will be applied to the oropharyn Xbefore the procedure. Additional lignocaine may be administered if required according to clinical protocol. CONDITION: Bronchoscopy; ; Cough; ; Lidocaine; ; Randomized Controlled Trial; ; Visual Analog Scale; ; Topical Anesthesia; ; Flexible Bronchoscopy Cough during flexible bronchoscopy in patients undergoing diagnostic or therapeutic bronchoscopy. ; Bronchoscopy; ; Cough; ; Lidocaine; ; Randomized Controlled Trial; ; Visual Analog Scale; ; Topical Anesthesia; ; Flexible Bronchoscopy PRIMARY OUTCOME: Cough Severity Immediately after completion of flexible bronchoscopy Visual Analogue Scale from 0 to 10, where 0 indicates no cough and 10 indicates worst possible cough SECONDARY OUTCOME: Patient Tolerance Immediately after completion of flexible bronchoscopy Visual Analogue Scale from 0 to 10, where 0 indicates very poor tolerance and 10 indicates excellent tolerance INCLUSION CRITERIA: 1. Patients aged 18 years and above. 2. Patients scheduled for elective flexible bronchoscopy. 3. Patients who provide written informed consent to participate in the study.