 
 <prompt> Summarize dis article for one sentence: Massive pulmonary embolism fit cause obstructive shock, and e dey show wit sudden chest pain, shortness of breath, and signs of shock, while tension pneumothorax, cardiac tamponade, constrictive pericarditis, and aortic stenosis fit also cause obstructive shock. <response>: Check if e get signs of big pulmonary embolism. Check if tension pneumothorax fit dey happen. Observe for symptoms of cardiac tamponade. Look out for "constrictive pericarditis" as possible cause of obstructive shock. Check for aortic stenosis as possible cause of obstructive shock. 