Predicting the difficulty of a lead extraction procedure: the LED index

Area of Science:

• Cardiology
• Medical Devices
• Electrophysiology

Background:

• Many centers performing lead extractions lack adequate personnel, training, and facilities.
• Current guidelines recommend referring patients to experienced centers for complex lead extractions.

Purpose of the Study:

• To develop a predictive score for lead extraction procedure difficulty.
• To identify patients who would benefit from referral to specialized centers.

Main Methods:

• Analysis of 889 lead extractions from 469 patients at a high-volume center.
• Logistic regression models used to identify predictors of procedure difficulty, indexed by fluoroscopy time.
• Development of the Lead Extraction Difficulty (LED) score based on significant predictors.

Main Results:

• The LED score incorporates the number of leads, lead age, lead type (active fixation, dual-coil ICD), and presence of vegetations.
• The LED score accurately predicted complex procedures (fluoroscopy time >90th percentile) with an area under the curve of 0.81.
• A LED score >10 predicted prolonged fluoroscopy time with 78.3% sensitivity and 76.7% specificity.

Conclusions:

• The Lead Extraction Difficulty (LED) score is a simple and accurate tool for predicting procedural complexity.
• The LED score can aid in patient selection for referral to experienced lead extraction centers.