Current devices deliver electric pulses that are extremely painful and can damage heart tissue, researchers said.The study appears in the Journal of Clinical Investigation.When they triggered ventricular fibrillation in a mouse heart, a light pulse of one second applied to the heart was enough to restore normal rhythm. This idea springs from advances in the field of optogenetics, in which light-sensitive proteins are embedded in living tissue, enabling the use of light sources to modify electrical activity in cells.
(Photo: Pixabay) Current devices deliver electric pulses that are extremely painful and can damage heart tissue, researchers said."It shows for the first time experimentally that light can be used for defibrillation ip65 waterproof light factory of cardiac arrhythmia," said Mr Bruegmann.end-of.To find if this technique could help human patients, researchers performed an analogous experiment within a detailed computer model of a human heart, one derived from MRI scans taken of a patient who had experienced a heart attack and was now at risk of arrhythmia.
"In addition to demonstrating the feasibility of optogenetic defibrillation in a virtual heart of a patient, the simulations revealed the precise ways in which light alters the collective electrical behaviour of the cells in the heart to achieve the desired arrhythmia termination," Mr Trayanova said. "This is a very important result," said Tobias Bruegmann, from University of Bonn. The red light, which has a longer wavelength, was more effective in the virtual human tests."Our simulations show that a light pulse to the heart could stop the cardiac arrhythmia in this patient," said Patrick M Boyle, a Johns Hopkins research professor. Washington: Scientists have shown that beams of light could replace harsh electric shocks to treat patients reeling from arrhythmia - a deadly heart rhythm disorder.