Medical Procedure and EMI Warnings, Precautions, and Guidance - Manual for Health Care Professionals - Implanted Pacemakers and Defibrillators

Oct 22, 2026

Manual for health care professionals addressing electromagnetic interference (EMI) risks for patients with implanted pacemakers and cardioverter defibrillators (ICDs). Covers EMI fundamentals, device responses such as oversensing, device reset, and reversion, and general clinician guidance to discuss with patients. Provides perioperative management recommendations and detailed warnings for medical procedures, equipment, and patient magnet use, including specific distance-restriction categories and patient-focused precautions for daily living.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages32

Reading Time1 h 21 min

AccessFree to download

Introduction

Overview of electromagnetic interference (EMI)

Types of EMI

Applicable standards for safety and electromagnetic compatibility

Device responses to EMI

Oversensing

Device reset

Reversion

General guidelines for patients in the presence of EMI

Perioperative management of patients with implanted pacemakers or ICDs

Warnings and precautions for medical procedures and equipment

Medical procedures and equipment requiring warnings

Acceptable procedures and devices

Initiating asynchronous pacing with a patient magnet

Suspending ICD tachyarrhythmia detection with a patient magnet

Medtronic Model 9466 patient magnet

Warnings, precautions, and guidance for EMI for patients

Distance restrictions (no restriction, 15 cm, 30 cm, 60 cm)

Items with special considerations and special environments

Non-EMI environments with special consideration

Medical Procedure and EMI Warnings, Precautions, and Guidance for implanted pacemakers and defibrillators Manual for Health Care Professionals Medtronic, Medtronic with rising man logo, and Medtronic logo are trademarks of Medtronic. Third-party trademarks (“TM*”) belong to their respective owners. The following list includes trademarks or registered trademarks of a Medtronic entity in the United States and/orin other countries. Adapta™, EnPulse™, Kappa™, MVP™, Relia™, Sensia™, SureScan™, Versa™ Contents 1 Introduction ......................................................................... 3 2 Overview of electromagnetic interference (EMI) .......................................... 4 2.1 Types of EMI ........................................................................... 4 2.2 Applicable standards for safety and electromagnetic compatibility ................................ 5 3 Device responses to EMI .............................................................. 5 3.1 Oversensing ........................................................................... 6 3.2 Device reset ............................................................................ 6 3.3 Reversion .............................................................................. 6 4 General guidelines for patients in the presence of EMI ..................................... 6 5 Perioperative management of patients with implanted pacemakers or ICDs ................... 7 6 Warnings and precautions for medical procedures and equipment .......................... 7 6.1 Medical procedures and equipment that require warnings, precautions, and guidance for health care professionals .............................................................................. 7 6.2 Medical procedures and devices that are acceptable for patients with implanted pacemakers and ICDs .................................................................................... 19 6.3 How to initiate asynchronous pacing in a Medtronic pacemaker with a Medtronic Model 9466 patient magnet .................................................................................. 19 6.4 How to suspend tachyarrhythmia detection and therapies in a Medtronic ICD with a Medtronic Model 9466 patient magnet ............................................................................ 20 6.5 Medtronic Model 9466 patient magnet ..................................................... 21 7 Warnings, precautions, and guidance for EMI for patients with an implanted pacemaker or ICD ................................................................................. 22 7.1 Items with no distance restriction from an implanted pacemaker or ICD .......................... 22 7.2 Items with a 15 cm (6 in) distance restriction from an implanted pacemaker or ICD ................. 23 7.3 Items with a 30 cm (12 in) distance restriction from an implanted pacemaker or ICD ................ 25 7.4 Items with a 60 cm (24 in) distance restriction from an implanted pacemaker or ICD ................ 26 7.5 Items with low potential for EMI at extended distances from an implanted pacemaker or ICD ......... 27 7.6 Items and environments with special considerations for EMI for patients with implanted pacemakers and ICDs .................................................................................... 27 7.7 Non-EMI environments with special consideration for patients with implanted pacemakers and ICDs .................................................................................... 28 1 Introduction This manual is for physicians and other health care professionals who treat patients who have the following Medtronic implanted cardiac devices: • Pacemakers, including cardiac resynchronization therapy pacemakers (CRT-P) • Cardioverter defibrillators (ICD), including cardiac resynchronization therapy defibrillators (CRT-D) Note: The warnings, precautions, and guidance in this m

FAQs

Which implanted cardiac devices does the manual apply to?

It applies to Medtronic implanted pacemakers (including CRT-P) and ICDs (including CRT-D). It does not apply to patients with leadless transcatheter cardiac devices or implantable cardiac monitors.

What device responses to EMI are described?

The manual describes common responses including oversensing, device reset, and reversion.

How does the manual structure guidance on medical procedures and EMI risk?

It provides warnings and precautions for procedures and equipment, lists medical procedures considered acceptable, and includes technical guidance for using a Medtronic Model 9466 patient magnet, plus patient precautions organized by distance restrictions and special environments.

Oct 22, 2026

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