False Asystole Alarms Post-Temporary Pacemaker Placement Due to Pseudo-fusion

Alyssa M. Vermeulen, Frank Zimmerman, Hoang H. Nguyen

Research output: Contribution to journalArticlepeer-review


An infant with congenital heart block and hemodynamically significant bradycardia underwent therapeutic temporary pacing wires placement. Post-operatively, frequent “asystole” alarms were observed on telemetry causing distress to both the family and the nursing staff. Investigation of these alarms showed that pacemaker malfunction led to monitor pseudo-malfunction. The alarms were alleviated with mindful setting of the pacemaker and telemetry monitor parameters. This case highlights the challenges of pacemaker placement and monitoring of very small infants in the intensive care setting. Awareness of these challenges would help in troubleshooting pacemaker and telemetry monitor issues.

Original languageEnglish (US)
Pages (from-to)215-218
Number of pages4
JournalPediatric Cardiology
Issue number1
StatePublished - Jan 2021


  • Alarm fatigue
  • Congenital heart block
  • False alarm
  • Pseudo-fusion
  • Temporary pacing

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Cardiology and Cardiovascular Medicine


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