Scientists Develop Ways of Detecting Heart Attack German researchers have comeup with a ne

Scientists Develop Ways of Detecting Heart Attack

German researchers have comeup with a new generation of defibrillators(除颤器) and early-warn-ing software aimed at offeringheart patients greater _(51) from sudden death from cardiac ar-rest (心脏停搏).

InGermanyalone, around 100,000people die annually _(52) a result of cardiac arrest and many of these casesare caused by disruption to the heart's thythm. Those most at _(53) are patients who have alreadysuffered a heart attack, and for years the use of defibrillators has proved'useful in _ _(54)life-threatening disruptions to heart thythms and correcting them automaticallyby intervening within seconds. These devices _(55) on a range of functions, such asthat of pacemaker(起搏器).

Heart specialists atFreiburg's University Clinic have now achieved a breakthrough with anim-planted defibrillator (56) of generating a six-channelelectrocardiogram (ECG,心电图 ) with-in the body. This integrated systemallows _ _(57) diagnosis ofsevere blood-flow problems and a pending. (即将发生的) heartattack. It will be implanted in . _(58) for the first time this year.Meanwhile,researchers at the Fraunhofer Institute for Applied Mathematics inKaiserslautern have developed new computer software that _(59) the evalution ofECG data more precise.

Theoverwhelming majority of patients at risk will not have an implanteddefibrillator and must for this _(60)undergo regular ECGs. "Many of the current programs only take into _ (61) a linear correlation of the data.We are, however, making use of a non-linear process (62) reveals the chaotic patterns ofheart beats as an open and complex system," Hagen Knaf says,"In thisway changes in the heart _(63) over time can be monitored and individualvariations in patients taken into account. " An old study of ECG data,based upon 600 patients who had (64)a subsequent heart attack, enabled the researchers to compare risks and to showthat the new software evaluates the (65) considerably better.

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