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A quantity of factors put patients with irregular fatty deposits in an artery at high risk for heart attack, stroke and cardiovascular death, a new study shows. Patients in different stages of this condition atherothrombosis  are at enlarged risk for heart attack and stroke stemming from cheap blood flow from the artery blockage, but some are at better risk than others. In an analysis of more than 45,000 patients, the researchers found that patients with abnormal fatty deposits in an artery were at highest risk if they had a prior history of heart attack or other emergencies linked to an artery blockage.
Reduction of the arteries in various locations also greatly increased the risk for patients with atherothrombosis, as did diabetes for all the patients even those with only the risk factors for atherothrombosis.
Perceptive that these factors boost the risk can help physicians take preventive action, according to the researchers, who are from the VA Boston Healthcare System, Brigham and Women's Hospital and Harvard Medical School in Boston.
The researchers analyzed data from 45,227 patients enrolled in an worldwide study known as Reduction of Atherothrombosis for Continued Health (REACH) between 2003 and 2004. They collected detailed information from the patients when they enrolled and conducted follow-ups one, two, three and four years later.
They establish that 81.3 percent of the patients had hypertension, 70.4 percent had high cholesterol levels in the blood, and 15.9 percent had polyvascular disease. In adding, 48.4 percent of the patients had "ischemic events" prior heart attacks, unstable angina or other problems related to the artery blockage, with 28.1 percent of those patients having had such an event within the previous year.
During the follow-up period, 2,315 patients suffered cardiovascular death, 1,228 had a heart attack, 1,898 had a stroke, and 40 had a heart attack and a stroke on the similar day.
The researchers establish that patients with atherothrombosis with a previous history of heart attacks and other events related to a blood vessel blockage had the highest rate of following cardiac emergencies linked to blood flow problems. Patients with stable heart, cerebrovascular or peripheral route disease had a lower risk, while the risk was lowest amongst those with risk factors for atherothrombosis but without established disease.
The results show that "there is a entire spectrum of [emergencies relating to artery blockage and blood flow] in patients with risk factors or with recognized cardiovascular disease easily ascertainable clinical characteristics are the famous factors associated with a high risk of future ischemic events," they fulfilled.