One option, if you have the means and can collect the mail from your parents' house, is to go ahead and pay their bills yourself -- it's not illegal to pay someone else's bills.
Pulmonary embolism occurs when a clump of material, most often a blood clot, gets wedged into an artery in your lungs. These blood clots most commonly come from the deep veins of your legs. This condition is known as deep vein thrombosis (DVT). In most cases, multiple clots are involved but not necessarily all at once.
B. blood clot. Blood clots, often from a deep vein thrombosis, are the most common cause of a pulmonary embolism. Rarely, bone marrow, amniotic fluid, air bubbles, oxygen bubbles, and other things can also get into the circulatory system and cause a pulmonary embolism. Predisposing factors of pulmonary emboli include: