|送交者: Pascal 2017年03月12日00:07:46 于 [健康生活] 发送悄悄话|
耳垂上的折痕 ≈≈ 冠状动脉粥样硬化性心脏病 / 缺血性心脏病
上述标题，是一个古老的发现。古老到44年前的1973年，Dr. Sanders T. Frank在权威的《新英格兰医学》学术刊物上，首次以公开信的形式提出这一发现。
How Could Ear Creases Indicate Heart Disease?
Scientists aren’t sure how these two might be connected, but there are some theories. Degeneration of the elastic tissue around the small blood vessels that carry blood to the earlobes produces the earlobe crease. This is the same type of change in blood vessels associated with CAD. In other words, visible changes that show up in tiny blood vessels of the ear could indicate similar changes in those blood vessels that can’t be seen around the heart.
Rare disorders like Beckwith-Wiedemann syndrome, an overgrowth disorder, in children or genetic factors such as race and earlobe shape also can cause a crease. So how concerned should you be if you have an earlobe crease?
Several scientists have looked at the potential connection between earlobe creases and CAD. Some studies have shown a correlation, while others have not.
A study of 340 patients published in 1982 found an earlobe crease to be a sign associated with aging and CAD. The crease suggested the presence of a more severe form of heart disease in people who were showing symptoms. The earlobe crease, the researchers wrote, “may identify a subset of patients prone to early aging and to the early development of coronary artery disease, whose prognosis might be improved by early preventative measures.”
Another study published in 1989 studied the bodies of 300 patients who had died from various causes. In this study, the diagonal creases were associated with cardiovascular causes of death. The researchers wrote, “We found a strong association between earlobe creases and a cardiovascular cause of death in men and women after age, height, and diabetes had been controlled for.”
A 1991 study found similar results. So did a study publsihed in 2006, which reported that an ear crease in people younger than age 40 was a sign of CAD in up to 80 percent of cases. In a 2012 study, 430 patients with no history of CAD were examined for ear creases and then given a CT scan for CAD. Those with an ear crease were more likely to have CAD.
Other studies have shown different results. A study in 1980 showed no significant relationship between ELC and CAD in American Indians. This indicates that “Frank’s sign” may not show the same correlation in other ethnic groups. Another study of Japanese Americans living in Hawaii also found no connection. Studies have indicated that the sign may be less indicative in people who have other important risk factors for CAD, particularly diabetes.
Some studies have theorized that as people age, the presence of earlobe creases and heart disease increase — especially after they reach age 50. This doesn’t necessarily mean that one has to do with the other. A study by University of Massachusetts Medical School concluded that earlobe creases are a simple feature of the aging process in some people.
This cohort study investigated 449 consecutive Chinese, 250 cases with CAD and 199 without CAD, who were certified by coronary artery angiography in our center. Characteristic differences and the relation of DELC to CAD were assessed by Chi-square and t tests. The multivariate regression was performed to adjust for confounders and ROCs mode were used to detect its predicting performance for CAD.
The prevalence of DELC was 46.2% in those without CAD and 75.2% in those with CAD (P < .001). Subjects with DELC had more stenostic vessels and higher prevalence of both any and significant coronary artery stenosis than those without DELC (P < .001).
Steven Spielberg with left DELC (red arrow). Photograph: Gabriel Bouys/AFP/Getty Images
Why A Creased Earlobe May Kill You And Other Hidden Signs Of Heart Problems
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