Featured Article in Chaos on 26 May 2020 - Flickering of cardiac state before the onset and termination of atrial fibrillation.
Atrial fibrillation (AF) is an irregular heartbeat (arrhythmia) that can lead to stroke, heart failure and other heart-related complications. Associate Professor Lan Boon Leong, from the School of Engineering, led an international team of researchers to study the dynamics of the cardiac state before the onset and termination of AF. They found that the cardiac state flickers between near normal and near AF as the tipping point is approached, instead of becoming increasingly similar as previously expected.
Their paper was selected as a featured article in the journal Chaos, which is published by the American Institute of Physics (AIP).
According to Lan, a wearable device can be used to measure the cardiac state because it is defined using the intervals between successive heart beats. "Our finding could therefore lead to a more accurate method for early detection and better management of the disease using wearable devices. Furthermore, our definition of the state of a complex system could be adapted to study the critical transition in other chronic episodic diseases and other complex systems," he added.