Not only the heart, the signals of the ear or the hand can generate ECG

Scientists explain how signals from ears or hands can be used to generate ECGs to control heart rate

A new electrocardiogram (ECG) method, which uses ear and hand signals to control heart rate, was unveiled today at the EHRA 2011 conference. , Congress of the European Society of Cardiology (ESC). The ECG does not require two hands and can be used by pilots, athletes and the military.

The study's author, Dr. Raffaele De Lucia, of the University Hospital of Pisa, Italy, said: "Mobile ECG devices represent a major opportunity to detect atrial fibrillation, the the most common heart rhythm disorder, and thus prevent strokes and reduce the number of hospitalizations. All commercially available portable ECG devices require both hands, but what will happen if symptoms occur at the wheel? "

This is the first study showing that the ear can be used for ECG signal detection … An ECG was first performed using the standard method, which uses the index and the the middle finger of each hand. A second ECG was performed using the index finger and middle finger of the left hand and a clip attached to the left ear.

This study is the first to show that the ear can be used for ECG signal detection. The study included 32 consecutive healthy volunteers (cardiology students and nurses). An ECG was first performed according to the standard method, which uses the index and major of each hand. A second ECG was performed using the index and middle fingers of the left hand and a clip attached to the left ear. (See Figure)

All ECGs were printed and badyzed by the device and by two cardiologists blind to the method used. No difference was detected in the ECG results obtained by the two methods.

Dr. De Lucia said, "We have shown how the ear can be used as an innovative anatomical site for ECG signal detection in healthy adults. We are currently conducting further studies to validate this method in patients with cardiac arrhythmia. "

The authors stated that the results pave the way for a new type of single electrode ECG wearable device that leaves a free hand, which facilitates its use. In addition to detecting previously undiagnosed atrial fibrillation, the device could be used to badess physical performance during exercise, prevent fainting, and control the heart during the onset of symptoms such as dizziness and shortness of breath. Patients already diagnosed with heart problems such as atrial fibrillation could also use it to monitor their condition.