Word: blood vessel
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After undergoing a battery of tests, Clinton received two stents in a coronary artery. The low-risk procedure involved inserting small metal mesh tubes into the artery to prop it open. The stents will remain within the artery permanently as scaffolding, allowing the vessel to stay open and accommodate blood flow. (See pictures of Clinton's North Korea rescue mission...
Just as he was starting to reclaim his spot, Ho began coughing up blood during the Cornell game in Week 4—resulting from a ruptured blood vessel in his lung that Ho initially suffered against the Bulldogs the season prior. When he returned in Week 7, an away game at Dartmouth, Ho was hurt again—this time his shoulder...
...persist. Particulates can lodge deep in the lungs, where they activate another process - inflammation, which kicks in over the 24 hours after exposure. The inflammatory response can stiffen blood vessels and cause longer-term damage to blood-vessel flexibility and their ability to absorb changes in blood flow from the heart. Weakened blood vessels can increase the risk of heart disease or stroke...
...that doesn't mean that every urban resident is at higher risk of heart disease. For most healthy people, the exposure to city air and transient changes in blood pressure isn't dangerous. But, says Brook, "it's plausible that if someone has underlying hypertension or coronary disease, then these changes in blood pressure and blood-vessel function might be exaggerated and might even trigger a heart attack. The levels at which we encounter these particles today is still dangerous to people who are unhealthy and at high risk." (See pictures of the effects of global warming...
...autopsy could, however, rule out a heart attack. If Jackson's cardiac arrest had been triggered by a heart attack - caused by a ruptured plaque blocking blood flow to his heart - then pathologists should be able to see the occluded vessel and the fresh evidence of the clogged-up heart...