Inappropriate activation of pacemaker magnet response mode by CPAP masks

Yosef Schwartz*, Jeremiah Wasserlauf, Alan Varteres Sahakian, Bradley Paul Knight

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Background: While electromagnetic interference is widely recognized as a cause of noise detected by cardiac implanted electronic devices (CIEDs), we report on two cases of inappropriate activation of magnet response mode due to magnets in continuous positive airway pressure (CPAP) masks. Methods: Two patients with St. Jude Medical dual-chamber pacemakers (Assurity DR 2240; St. Jude Medical, St. Paul, MN, USA) were discovered on routine outpatient device interrogation to have magnet response events that correlated with nightly use of their CPAP masks. A magnet response event was reproduced by positioning one CPAP mask over the patient's pulse generator site. The magnetic flux density was measured using a Gauss meter. Results: It was found that their CPAP masks had magnetic clips that were used to secure the headgears. These appeared to be transiently positioned within sufficient proximity of the patients’ CIEDs to activate magnet response events during sleep. The measured magnetic field density adjacent to a mask magnet was 136 Gauss. Conclusion: Clinicians managing CPAPs and CIEDs should be aware of magnetic interference with the potential for inappropriate activation of magnet response mode. CPAP masks that are secured with magnetic clips should be avoided in patients with CIEDs, since this can result in inappropriate asynchronous pacing in pacemakers or potential failure to deliver life-saving tachytherapies in patients with implanted cardioverter-defibrillators.

Original languageEnglish (US)
JournalPACE - Pacing and Clinical Electrophysiology
DOIs
StatePublished - Jan 1 2019

Fingerprint

Continuous Positive Airway Pressure
Magnets
Masks
Equipment and Supplies
Surgical Instruments
Defibrillators
Electromagnetic Phenomena
Magnetic Fields
Noise
Sleep
Outpatients

Keywords

  • CPAP
  • ICD
  • magnet
  • pacemaker

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

@article{3e523e424aae40879b3e364127460e23,
title = "Inappropriate activation of pacemaker magnet response mode by CPAP masks",
abstract = "Background: While electromagnetic interference is widely recognized as a cause of noise detected by cardiac implanted electronic devices (CIEDs), we report on two cases of inappropriate activation of magnet response mode due to magnets in continuous positive airway pressure (CPAP) masks. Methods: Two patients with St. Jude Medical dual-chamber pacemakers (Assurity DR 2240; St. Jude Medical, St. Paul, MN, USA) were discovered on routine outpatient device interrogation to have magnet response events that correlated with nightly use of their CPAP masks. A magnet response event was reproduced by positioning one CPAP mask over the patient's pulse generator site. The magnetic flux density was measured using a Gauss meter. Results: It was found that their CPAP masks had magnetic clips that were used to secure the headgears. These appeared to be transiently positioned within sufficient proximity of the patients’ CIEDs to activate magnet response events during sleep. The measured magnetic field density adjacent to a mask magnet was 136 Gauss. Conclusion: Clinicians managing CPAPs and CIEDs should be aware of magnetic interference with the potential for inappropriate activation of magnet response mode. CPAP masks that are secured with magnetic clips should be avoided in patients with CIEDs, since this can result in inappropriate asynchronous pacing in pacemakers or potential failure to deliver life-saving tachytherapies in patients with implanted cardioverter-defibrillators.",
keywords = "CPAP, ICD, magnet, pacemaker",
author = "Yosef Schwartz and Jeremiah Wasserlauf and Sahakian, {Alan Varteres} and Knight, {Bradley Paul}",
year = "2019",
month = "1",
day = "1",
doi = "10.1111/pace.13693",
language = "English (US)",
journal = "PACE - Pacing and Clinical Electrophysiology",
issn = "0147-8389",
publisher = "Wiley-Blackwell",

}

Inappropriate activation of pacemaker magnet response mode by CPAP masks. / Schwartz, Yosef; Wasserlauf, Jeremiah; Sahakian, Alan Varteres; Knight, Bradley Paul.

In: PACE - Pacing and Clinical Electrophysiology, 01.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Inappropriate activation of pacemaker magnet response mode by CPAP masks

AU - Schwartz, Yosef

AU - Wasserlauf, Jeremiah

AU - Sahakian, Alan Varteres

AU - Knight, Bradley Paul

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Background: While electromagnetic interference is widely recognized as a cause of noise detected by cardiac implanted electronic devices (CIEDs), we report on two cases of inappropriate activation of magnet response mode due to magnets in continuous positive airway pressure (CPAP) masks. Methods: Two patients with St. Jude Medical dual-chamber pacemakers (Assurity DR 2240; St. Jude Medical, St. Paul, MN, USA) were discovered on routine outpatient device interrogation to have magnet response events that correlated with nightly use of their CPAP masks. A magnet response event was reproduced by positioning one CPAP mask over the patient's pulse generator site. The magnetic flux density was measured using a Gauss meter. Results: It was found that their CPAP masks had magnetic clips that were used to secure the headgears. These appeared to be transiently positioned within sufficient proximity of the patients’ CIEDs to activate magnet response events during sleep. The measured magnetic field density adjacent to a mask magnet was 136 Gauss. Conclusion: Clinicians managing CPAPs and CIEDs should be aware of magnetic interference with the potential for inappropriate activation of magnet response mode. CPAP masks that are secured with magnetic clips should be avoided in patients with CIEDs, since this can result in inappropriate asynchronous pacing in pacemakers or potential failure to deliver life-saving tachytherapies in patients with implanted cardioverter-defibrillators.

AB - Background: While electromagnetic interference is widely recognized as a cause of noise detected by cardiac implanted electronic devices (CIEDs), we report on two cases of inappropriate activation of magnet response mode due to magnets in continuous positive airway pressure (CPAP) masks. Methods: Two patients with St. Jude Medical dual-chamber pacemakers (Assurity DR 2240; St. Jude Medical, St. Paul, MN, USA) were discovered on routine outpatient device interrogation to have magnet response events that correlated with nightly use of their CPAP masks. A magnet response event was reproduced by positioning one CPAP mask over the patient's pulse generator site. The magnetic flux density was measured using a Gauss meter. Results: It was found that their CPAP masks had magnetic clips that were used to secure the headgears. These appeared to be transiently positioned within sufficient proximity of the patients’ CIEDs to activate magnet response events during sleep. The measured magnetic field density adjacent to a mask magnet was 136 Gauss. Conclusion: Clinicians managing CPAPs and CIEDs should be aware of magnetic interference with the potential for inappropriate activation of magnet response mode. CPAP masks that are secured with magnetic clips should be avoided in patients with CIEDs, since this can result in inappropriate asynchronous pacing in pacemakers or potential failure to deliver life-saving tachytherapies in patients with implanted cardioverter-defibrillators.

KW - CPAP

KW - ICD

KW - magnet

KW - pacemaker

UR - http://www.scopus.com/inward/record.url?scp=85065206735&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065206735&partnerID=8YFLogxK

U2 - 10.1111/pace.13693

DO - 10.1111/pace.13693

M3 - Article

C2 - 30969432

AN - SCOPUS:85065206735

JO - PACE - Pacing and Clinical Electrophysiology

JF - PACE - Pacing and Clinical Electrophysiology

SN - 0147-8389

ER -