Tell the difference between bipolar and unipolar polarity fo

Tell the difference between bipolar and unipolar polarity for pacemaker leads What\'s the difference between single chamber pacemaker system and dual chamber pacemaker system?

Solution

Difference between Bipolar and Unipolar Pacemaker leads:-

A unipolar lead is a single conductor lead with an electrode located at the tip.

A bipolar lead has two separate and isolated conductors within a single-lead; the distal electrode is located at the tip of the lead and the other one is usually about 2 cm more proximal.

Difference between Single and Dual Chamber acemaker System:-

The difference between single and dual chamber pacemakers is essentially in the fact that a single chamber pacemaker has only one lead implanted (typically in the right ventricle) and a dual chamber has two, one in the atrium and one in the RV.

Single chamber atrial based pacing can be used in sinus node diseased without concommitant AV node disease. This can be tested at implant by pacing AAI at 130-140bpm and ensuring there is one to one AV conduction. In saying that most physicians will implant a dual chamber device as about 3-5% of people with sinus node disease will develop AV node disease per year.

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