Comparison of TASCOPE and C MAC video laryngoscope for successful breathing tube placement in adults with expected difficulty during elective surgery under general anesthesia

INTERVENTION: Intervention1: Group T, TAScope: Patient in this group will be intubated using TAScope and then first success rate is compared with C MAC videolaryngoscope Intervention2: Group C, C MAC: Patient in this group will be intubated using C MAC video laryngoscope and fisrt pass intubation success rate is compared with TASCOPE Control Intervention1: Comparison between first pass intubation success rate with TASCOPE and C MAC videolaryngoscope: In TASCOPE group we use TASCOPE for intubation in difficult airways and fisrt pass intubation success rate is noted and compared with the C MAC group CONDITION: Health Condition 1: 8‐ Other Procedures PRIMARY OUTCOME: To compare the first attempt intubation success rate of TAScope and C MAC videolaryngoscope laryngoscopes in anticipated difficult airwayTimepoint: Patients with difficult airway are grouped into TASCOPE group and C MAC videolaryngoscope group and first pass intubation success rate is compared between both the groups SECONDARY OUTCOME: Complications like desaturation & airway traumaTimepoint: Assessed during & after intubation Hemodynamic parametersTimepoint: Baseline ; after induction ; during intubation ; 1minute after intubation ; 2minute after intubation ; 3minute after intubation ; 4minute after intubation ; 5minute after intubation To compare CL gradeTimepoint: assessed during intubation To compare POGO scoreTimepoint: assessed during intubation To compare the number of intubation attemptTimepoint: To compare the time to intubationTimepoint: from insertion of laryngoscope to confirmation of capnography INCLUSION CRITERIA: Any of the following, 1 MMS 3 or 4 2 Neck circumference more than 40cms 3 Thyromental distance more than 6cms 4 limited neck extension