Feasibility of Doppler Ultrasound for Pulse Detection in Out-of-Hospital Cardiac Arrest Patients

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

75 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-01-04

Study Completion Date

2024-04-18

Brief Summary

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The goal of this prospective observational study is to investigate the feasibility of using doppler point-of-care ultrasound on the femoral artery with a portable device to assess the presence of a pulse in patients suffering from cardiac arrest in the out-of-hospital environment. The main question is how often researchers are successful in acquiring the necessary ultrasound signal in the out-of-hospital environment.

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Detailed Description

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In this prospective observational study, a dedicated research team will be dispatched to cardiac arrest patients treated in the prehospital environment by emergency medical services (EMS). The team will use a portable ultrasound device to identify the femoral artery and conduct a pulsed wave (PW) doppler measurement during chest compressions as well as during chest compression pauses for rhythm analysis and save the recorded images. These ultrasound pulse checks will be conducted in parallel with the normal treatment of the patient, including manual pulse checks, and will only be conducted if ultrasound is possible without interference in the resuscitation. All treatment decisions will rest with the treating EMS team.

Conditions

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Cardiac Arrest, Out-Of-Hospital

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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Included patients

Point-of-care vascular ultrasound

Intervention Type OTHER

Point-of-care ultrasound will be used to image the femoral vessels and to perform a pulsed-wave doppler measurement of blood flow during chest compressions and during pauses for rhythm and manual pulse checks.

Interventions

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Point-of-care vascular ultrasound

Point-of-care ultrasound will be used to image the femoral vessels and to perform a pulsed-wave doppler measurement of blood flow during chest compressions and during pauses for rhythm and manual pulse checks.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Out-of-hospital cardiac arrest treated by EMS
* Minimum age of 18 years

Exclusion Criteria

* Pregnancy or suspected pregnancy
* Disapproval of the treating EMS team
* Adults under legal guardianship
* Inability to perform femoral artery doppler ultrasound due to limited access to the patient and possible interference with the treating EMS team
* Inability to perform femoral artery doppler ultrasound due to injuries or anatomic abnormalities in the femoral region or necessary emergent medical interventions in the femoral region
* Decision to transfer the patient to the hospital with ongoing CPR for emergent procedures such as extracorporeal CPR before femoral artery doppler ultrasound could be attempted
* Inability to safely perform femoral artery doppler ultrasound due to environmental hazards

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No