![]() Unipolar Pacing System A unipolar pacing system has only one electrode (the negative electrode) making contact with the heart. Both electrodes are in contact with myocardial tissues, so either wire may be use as the negative, or ground electrode The negative electrode is attached to the negative terminal, and the positive electrode is attached to the positive terminal of the pulse generator, either directly or via a bridging cable īipolar pacing system An epicardial lead system is often used for temporary pacing after cardiac surgery The bipolar epicardial lead system has two separate insulated wires (one negative and one positive) that are loosely secured with sutures to the cardiac chambers to be paced. īipolar pacing system Approximately 1 cm from the negative electrode is a positive electrode. The distal, or negative, electrode is at the tip of the pacing lead and is in the direct contact with the heart, usually inside the right atrium or ventricle. Pacing Lead System The pacing lead used for temporary pacing may be bipolar or unipolar Bipolar Pacing System In bipolar pacing system, two electrodes (positive and negative) are located within the heart īipolar Pacing System The bipolar lead used in the transvenous pacing as two electrodes on one catheter. The power source for a temporary external pulse generator is standard 9-volt alkaline battery inserted into the generator This electrical current initiates a myocardial depolarization. Pacing pulse generator The pulse generator is designed to generate an electrical current that travels through pacing lead and exits through electrode that is in direct contact with the heart. The Pacemaker System A simple electrical circuit consisting of PULSE GENERATOR PACING LEAD Indications Bradycardia Sinus bradycardia and arrest Sick sinus syndrome Heart blocks Tachydysrhythmias Supraventricular Ventricular Permanent pacemaker failure Support cardiac output after cardiac surgery Diagnostic studies Electrophysiological studies Atrial electrogram Temporary Pacemaker Temporary Pacemakers can be used temporarily, either supportively or prophylactically, until the condition responsible for the rate or conduction disturbance resolves. Types of Pacemaker Temporary pacemaker Permanent pacemaker
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