As heart disease reaches epidemic proportions worldwide, researchers are moving away from the old “clogged-pipes” model to search for triggers lurking in our genes.
Jennifer Kahn in National Geographic:
At this moment, her doctor is threading a thin catheter up through her femoral artery from an incision in her groin, on into the aorta, and from there into one of the arteries encircling Gloria’s heart. At the tip of the catheter is a small balloon. The doctor gently navigates the tip to a spot where plaque has narrowed the artery’s channel by 90 percent. With a quick, practiced movement he inflates the balloon to push back the artery wall, deflates the balloon, then inserts an expandable stent—it looks like a tiny tube of chicken wire—that will keep the passage open. As Gloria watches on the monitor, the crimp in her artery disappears, and a wide laminar flow gushes through the vessel, like a river in flood.
The procedure is over. It has lasted only half an hour. In all likelihood, Gloria will be able to go home the next day. So will a few thousand other patients in the United States undergoing such routine angioplasty—more than a million of them a year. Pipe fixed, patient cured, right?