Post operative pulmonary edema is an uncommon entity resulting in morbid complications unless diagnosed and treated early. Causes for post operative pulmonary edema can be patient factors like preexisting cardiac conditions causing cardiogenic type of pulmonary edema  ,preexisting  airway disorders resulting in obstruction leading to non–cardiogenic type of pulmonary edema. Also, iatrogenic factors like over enthusiastic fluid administration and excessive manipulation of airways during the surgery resulting in edema of airways or reflex glottis closure during post–operative period , immediately after extubation may lead to Negative Pressure Pulmonary Edema(NPPE). NPPE is  non cardiogenic type of pulmonary edema usually seen in post extubation period , where pulmonary edema is resulted due to high negative intra thoracic pressure created by patient himself during strenuous inspiratory efforts against a closed glottis.  Prompt diagnosis and appropriate timely management improves the prognosis of this condition .