Every 40 seconds, someone in the U.S. has a heartattack, which amounts to about 805,000 heart attacks every year. Of course, this statistic applies only to humans. WorldHeartDay
Every 40 seconds, someone in the U.S. has a heart attack, which amounts to about 805,000 heart attacks every year. Of course, this statistic applies only to humans. But what about other animals — do they also experience this debilitating and potentially deadly condition?
"All mammalian hearts are very similar," Fenton said."So, most mammalian hearts, in principle, could have heart attacks." Yet 15% of first-time heart attacks occur in people without any cardiac risk factors. Rather, humans may be particularly heart-attack-prone because of a mutation that's unique to humans. This mutation prevents us from making a particular sugar molecule called Neu5Gc, as Gordts, the Varkis and colleagues reported in a 2019 study published in the journal Proceedings of the National Academy of Sciences .
But based on heart structure, researchers can make predictions about which vertebrates are most likely to have heart attacks. Mammalian and bird hearts have just one source of oxygen, the coronary arteries, according to Owerkowicz. These branch into smaller arterioles and capillaries, where heart muscle cells pick up oxygen and discard carbon dioxide.
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