An ECG test, used to measure heart activity, was not carried quickly enough.
And these studies are not really designed to measure heart risk.
Monitoring equipment is becoming cheaper and easier to use: Philips is developing an app which uses the camera in an iPad2 to measure heart and respiration rates.
Instead of sticking sensors onto the skin, Philips has developed a vital-signs camera system which the Dutch company says can measure heart and respiration rates extremely accurately.
The 400PT is a heavy monster that won't slide around the floor and it has cutting-edge electronics that measure heart rate, calorie burn and power output by the watt.
The trend toward monitors got moving when cardiologist George Klein, of the University of Western Ontario, first approached Medtronic in 1989 with the idea of a semipermanent implant to measure heart rhythms.
So the goal is to walk a mile, and at the end, we have to measure our heart rate.
The companies ran the required test and in June said results showed Bydureon wasn't associated with a clinically relevant prolonged measure of heart rhythm.
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But those results had not been announced as the studies' primary goal ahead of time, and are generally considered "softer, " or less reliable, than the combined measure of heart attacks and death.
The company claims that in the future it will be possible to have something like a detective game in which the camera can read players' faces and measure their heart rates in order to have a stab at deciding which ones are lying.
Researchers looked at the heart's electrical stability through a measure called T-wave alternans.
They have painstakingly cut through a heart, millimetre by millimetre, to measure and model the arrangement of the muscle fibres in each slice.
According to the British Heart Foundation, LVADs are a temporary measure - the longest that one of these devices had supported a patient so far is two years.
"You need to actually be able to directly measure how aroused the player is -- what their heart rate is, things like that -- in order to offer them a new experience each time they play, " Newell said.
But that bump came at a cost: increases in cortisol, a stress hormone, and a measure of inflammation called CRP, which can raise the risk of developing heart disease and diabetes.
Lilly wants to measure the viscosity of postmenopausal women, to see which face the risk of heart disease should they go on estrogen therapy.
He says he never thought it made sense that Vytorin would do better than the generic, Zocor, at the main measure used in the study: preventing the artery thickening that can lead to heart attacks.
It was only after last week's emergency that Cheney's doctors finally made public a crucial measure of his coronary performance, the "ejection fraction, " which indicates the heart's pumping power.
Scientists were able to detect signals from heart and nerve cell electro-flesh made this way, allowing them to measure changes in response to certain drugs.
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The protein is thought to be a measure of inflammation in the arteries, and inflamed arteries are more likely to develop the clots that cause heart attacks and strokes.
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