The first step when doing a pneumonectomy for cancer of the bronchus is to:

Pneumonectomy Pneumonectomy is anatomically more straightforward than lobectomy (in carcinoma bronchus): The pulmonary aery is first dissected, divided and sutured. The pulmonary veins are then isolated divided and sutured. The main bronchus is divided so that no blind stump remains. The technique of stump closure is impoant if a bronchopleural fistula is to be avoided. The tissues are carefully handled and the stump is usually stapled.