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This system analyzes publicly available FDA MAUDE data. It does NOT provide medical advice. MAUDE data is de-identified — do not attempt re-identification. © 2026 Claripulse.

Back to Cardiac Rhythm Management
MAUDE LookupCardiac Rhythm ManagementIsoflex

Isoflex Adverse Events: FDA MAUDE Data

ABBOTT (ST. JUDE MEDICAL) · Permanent Defibrillator Electrode (Lead) · First cleared Oct 1998 · 6 device variants grouped

Total Reports

3,882

Reports (30d)

36

Active Signals

5

Open Recalls

0

Monthly Report Volume
Event Type Breakdown

What the reports describe · Claripulse analysis

Most commonly reported problems

1

Failed Implant Attempt Due to Helix Issue

lead implanted, stable, new lead, implant procedure, helix

19

reports

2

Noise Oversensing Observed in Clinic Follow-Up

resolve event, observed right, patient stable, clinic follow, clinic

8

reports

3

Oversensing Noise with No Intervention

oversensing noise, patient stable, intervention, consequences, intervention performed

6

reports

4

Dislodged Lead Confirmed by X-Ray

replaced patient, patient stable, stable, patient presented, capture

5

reports

5

Explanted ICD Due to Infection

implantable cardioverter, icd, infection, cardioverter defibrillator, defibrillator icd

5

reports

6

Remote Monitoring Noise Oversensing

intervention performed, patient condition, condition, remote, intervention

5

reports

Problem groupings are generated by Claripulse from report narrative text. They summarize what reporters wrote, not adjudicated root cause.

Detection

Active safety signals

Increasing trendcriticalDisproportionate reportinghighDisproportionate reportinghighDisproportionate reportinghighDisproportionate reportinghigh

Evidence

Related research

Prevalence and management of electrical lead abnormalities in cardiac implantable electronic device leads.

Roberts H, et al. · 2023

[<sup>68</sup>Ga]Ga-DOTA-TOC Synthesis by a Cassette Developer System with [<sup>68</sup>Ga]GaCl<sub>3</sub> from Cyclotron using Liquid Target: An Italian Experience.

Cossandi M, et al. · 2025

Inhibition of ventricular output in a dual chamber pacemaker with normal pacing and sensing parameters: What is the mechanism?

Bera D, et al. · 2021

Medial subclavicular musculotendinous complex and insulation break: Rare cause of late pacemaker lead malfunction.

Bhattacharyya PJ, et al. · 2015

DDD pacemaker for severe heart failure-alternate to CRT.

Krishnamani NC. · 2016

Citations indexed from PubMed.

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Understanding this data

What FDA MAUDE data does and does not tell you

How these reports are filed, why raw counts mislead, and the limits to know before drawing conclusions.

→

How a safety signal is detected

What the "Active Signals" count above means and the methods that separate a real signal from noise.

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Disclaimer: This system analyzes publicly available FDA MAUDE data. It does NOT provide medical advice. MAUDE data is de-identified. Do not attempt re-identification. Report counts may differ from the FDA's MAUDE search due to processing cadence and deduplication. Data is updated weekly.