Clinical trial NCT06491186: Pulse Checks Using Femoral Artery B-Mode Ultrasound With Compressibility Assessment
Official title: Femoral Artery Ultrasound With Compressibility Assessment as a Method for Pulse Checks in Out-of-Hospital Cardiac Arrest: A Prospective Exploratory Study.
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Cardiac Arrest, Out-Of-Hospital
Keywords: Cardiac Arrest
Out-of-hospital Cardiac Arrest
OHCA
Ultrasound
Point-Of-Care Ultrasound
POCUS
Pulse Check
POCUS Pulse Check
B-mode Ultrasound
Femoral Artery
Arterial Compressibility Assessment
Lead sponsor: Medical University of Vienna
Sponsor class: OTHER
Collaborators: name: Ludwig Boltzmann Institute Digital Health and Patient Safety
name: Emergency Medical Service of Vienna
First posted: 2024-07-09
Enrollment: 69
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: The study population comprises non-pregnant adults suffering out-of-hospital cardiac arrest of any cause who are treated with CPR by emergency medical services.

Brief summary: The goal of this prospective observational study is to investigate B-mode point-of care ultrasound with arterial compressibility assessment on the femoral artery as a method to determine the presence of a pulse and to compare it with concurrently conducted manual pulse checks.

Detailed description: 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 employ B-mode ultrasound during rhythm checks. 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.

Eligibility criteria: 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

Primary outcomes:
measure: Results of POCUS pulse check
timeFrame: During cardiac arrest, up to 45 minutes
measure: Results of the concurrently conducted manual pulse check
timeFrame: During cardiac arrest, up to 45 minutes
Secondary outcomes:
measure: Arterial compressibility during chest compressions
timeFrame: During cardiac arrest, up to 45 minutes
measure: Arterial compressibility during rhythm checks
timeFrame: During cardiac arrest, up to 45 minutes
measure: Arterial pulsatility during rhythm checks
timeFrame: During cardiac arrest, up to 45 minutes
measure: Time needed for POCUS pulse checks
timeFrame: During cardiac arrest, up to 45 minutes
Other outcomes:
Locations:
city: Vienna
country: Austria
facility: Emergency Medical Service of Vienna
Study officials:
affiliation: Medical University of Vienna
name: Philipp Metelka, MD
role: PRINCIPAL_INVESTIGATOR
References: