Foreign body. Atelectasis is common in children who have inhaled an object, such as a peanut or small toy part, into their lungs. Narrowing of major airways from disease. Chronic infections, including fungal infections, tuberculosis and other diseases, can scar and constrict major airways. Tumor in a major airway.
He'll be placed on blood thinners to break up the clots...which can take from days to weeks. This is also a very dangerous time for him, as a clot could travel and lodge in a coronary artery on his heart, causing a heart attack, or it could travel and lodge in an artery in his brain causing a stroke.
Within hours of the fracture, the blood from the fracture fragments forms a mesh of clotted blood, which is the first link between the two fragments. The mesh contains special cells called Fibroblasts, which begin to lay down tissue called Granulation tissue between 4 and 10 days after the fracture occurs. The Granulation tissue forms a 'scaffold' between the two fragments, from which the formation of a Soft Callus can begin.