Class of Pacemaker Lead (Electrical Conductivity Measurement)

Why Is This Test Done?

Your healthcare provider may order this test if you have a pacemaker or implantable cardioverter-defibrillator (ICD) and suspect issues like lead malfunction, infection, or improper placement. It helps confirm whether the lead is conducting electricity as intended, which is critical for maintaining proper heart rhythm.

What Does the Test Involve?

This test typically involves a small electrical measurement taken directly from the pacemaker lead during a clinic visit. No blood or other bodily fluid is drawn—it’s a non-invasive procedure using specialized equipment to assess lead conductivity.

What to Expect Before the Test

You may need to fast for a short period before the test if your provider specifies it, but most often, no special preparation is required. Wear comfortable clothing and bring any relevant medical records or device documentation if asked.

What to Expect During the Test

You’ll lie down while a technician connects a small probe to your pacemaker lead. The test involves minimal discomfort as only a brief electrical signal is passed through the lead to measure its conductivity. The process usually takes just a few minutes.