The patient with least risk of pulmonary aspiration of gastric contents during induction of anesthesia is:-
NPO is same for obese and normal. NPO guidelines - 6hrs for liquid and semisolid, 2 hours NPO for clear fluids. Subset of patients who are at high risk for aspiration - pregnant women, morbidly obese (rapid sequence induction), full fatty meal - 8 hours NPO.
Markedly obese and NPO for eight hours
Fed coffee four hours before elective surgery
Scheduled for elective cesarean delivery and NPO for 20 hours
NPO for four hours after a full meal
JIPMER 2019