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Cardiopulmonary resuscitation

Real-Time Detection of Spontaneous Circulation during Cardiopulmonary Resuscitation: A New Approach

Strategic Insights

— 1 min read

Researchers from Trondheim University Hospital in Norway have developed a novel hands-free Doppler ultrasound system, RescueDoppler, which continuously measures carotid blood flow during cardiopulmonary resuscitation (CPR). The system has shown promise in detecting spontaneous circulation and return of spontaneous circulation (ROSC) in adult cardiac arrest patients. In a pilot study, 26 in-hospital and 36 out-of-hospital cardiac arrest patients were equipped with the RescueDoppler system, which detected carotid blood flow velocities generated by chest compressions and detected spontaneous circulation during rhythm checks. The study found the system to be safe and feasible, although the fastening patch and connecting cable need optimization.

Key Takeaways:

  • The RescueDoppler system is a novel hands-free Doppler ultrasound system that continuously measures carotid blood flow during CPR.
  • The system was tested in 26 in-hospital and 36 out-of-hospital cardiac arrest patients and detected spontaneous circulation and ROSC in 30 patients.
  • The study found the system to be safe and feasible, with no adverse events reported, but with 22 device deficiencies related to the fastening patch and connecting cable.
  • The system requires minimal training and is user-friendly.
  • The research concluded that further studies are required to confirm clinical relevance.

Statistics:

  • 26 in-hospital and 36 out-of-hospital cardiac arrest patients were equipped with the RescueDoppler system.
  • 30 patients had synchronized carotid blood flow curves with defibrillator data.
  • 22 device deficiencies were reported, mostly related to the fastening patch and connecting cable.
  • The system detected spontaneous circulation and ROSC in 30 patients.

Sources:

  • NewsRx. Recent Findings in Health and Medicine Described by Researchers from Trondheim University Hospital (Realtime detection of spontaneous circulation in humans during cardiopulmonary resuscitation using a continuous hands-free carotid Doppler: a ...). Medical Devices & Surgical Technology Week. October 26, 2025; p 1350.

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