Carotid Ultrasound Under Pulsed-wave Doppler Mode to Check the Pulse in Cardiopulmonary Arrest Patients.

It's crucial to determine whether a pulse is present or not in patient with cardiac arrest. But more and more studies have shown that manual palpation is unreliable for detecting pulse 1-4. Failure to detect pulselessness may cause delay of chest compression and directly affect the patient's outcome. Likewise, failure to rapidly detect return of spontaneous circulation may cause prolonged chest compression and increase associated injury during resuscitation.

More and more studies have demonstrated that echo guided pulse detection is feasible 5-7. The aim of our study is to check carotid pulse via ultrasound. This is a prospective study and the patient selection is in-hospital or out of hospital cardiac arrest. A curvilinear ultrasonography transducer is used and placed transversely on either right/left carotid artery under pulsed-wave doppler mode to check whether the pulse is present or not. The result of ultrasonography will be compared with manual palpation and to determine the accuracy and effectiveness of clinical usage.

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Key information

Conditions

Cardiac Arrest Cardiovascular Diseases Heart Arrest Heart Diseases

Age range

20 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

National Taiwan University Hospital

Taipei, 100, Taiwan

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

any patient presenting at ER with cardiac arrest older than 20 years-old

Exclusion criteria

younger than 20 years-old
patient who is pregnant

Treatment and study plan

Carotid ultrasound under pulsed-wave doppler mode

Device

Carotid ultrasound under pulsed-wave doppler mode to check whether carotid pulse is present

Primary outcomes

Carotid ultrasound under pulsed-wave doppler compared with manual palpation

Time frame: 5 seconds during pulse check period of resuscitation

The result of ultrasonography will be compared with manual palpation and to determine the accuracy（e.g., no pulse under manual palpation but positive pulse-wave finding）of clinical usage.
Carotid ultrasound under pulsed-wave doppler compared with manual palpation

Time frame: 5 seconds during pulse check period of resuscitation

The result of ultrasonography will be compared with manual palpation and to determine the effectiveness (e.g., the time need to confirm whether pulse is present or not under manual palpation and ultrasound) of clinical usage.

Sponsors and collaborators

Lead sponsor

National Taiwan University Hospital

Other

Registry information

Important dates

Study start: 2020
Primary completion: 2026
Study completion: 2026
First posted: Mar 10, 2021
Registry last updated: Feb 19, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

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