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What is Heavy smoker for elective hernia repair, Smoking should be stopped before how much period and explain in detail?
Cessation of smoking : 12hrs : reduces CO-Hb,hence increases oxygen carrying capacity 2days : CVS : aboloshes nicotine effect on sympathetic system stimulation, hence HR & BP normalises RS : Improves mucociliary function 2weeks : Sputum volume is reduced 2months : Relieves bronchospasm,decreases bronchial secretions,Chronic broncitis is reduced,Improves lung function,immune function returns to normal,hepatic enzymes returns to normal.