Then another agony begins: a deep, crushing pain deep in the chest as the pericardium slowly fills with serum and begins to compress the heart. It is now almost over--the loss of tissue fluids has reached a critical level--the compressed heart is struggling to pump heavy, thick, sluggish blood into the tissues--the tortured lungs are making a frantic effort to gasp in small gulps of air. He can feel the chill of death creeping through is tissues. . .