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.
This means your blood is too thin. INR stands for International Normalized Ratio, and the recommended INR is 2.0-3.0. The normal amount of time it takes for blood to clot is 12 to 14 seconds. With an INR of 5.5, this means that it takes 5.5 times longer to clot, or about 66-77 seconds.