A middle aged man presented with blood in the sputum. Aery responsible for bleeding in hemoptysis is?
Aeriographic studies in patients with active hemoptysis have shown that the systemic circulation (bronchial aeries) is primarily responsible for the bleeding in approximately 92% of cases. The bronchial aeries, which originate either from the aoa or from intercostal aeries and are therefore pa of the high-pressure systemic circulation, are the source of bleeding in bronchitis or bronchiectasis or with endobronchial tumors. Ref: Irwin and Rippe's Intensive Care Medicine edited by Richard S. Irwin, James M. Rippe, 2008, Page 589 ; Harrison's 17th ed table 34-1
Bronchial aery
Pulmonary aery
Intersegmental aery
Intercostal collaterals