Hidden pacemaker pulses detection based on wavelet and Hilbert-Huang transform

A pacemaker is a small electronic device implanted under the skin near the collarbone. Pacemakers monitor the heart´s electrical activity. If the heart is beating too slowly or pausing too long between beats, the pacemaker will provide electrical impulses that stimulate the heart to beat. The pacemaker itself consists of a small box (the pulse generator) and one to three leads that are placed in the heart. This paper is devoted to signal processing, based on wavelets analysis and Hilbert-Huang transformation which enables to find hidden pacemaker electrical impulses in ECG (electro cardio graph signal). Results will be helpful for prolonging pacemaker battery life and reducing the stimuli pain on patients with implantable pacemaker.