Visual detection of pulselessness by carotid artery sonography – a prospective observational study among medical students

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00032890

Enrollment

300

Registered

2023-10-18

Start date

2023-10-18

Completion date

Unknown

Last updated

2026-03-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Resuscitation

Interventions

Group 1: Are medical students able to differentiate between "pulsation of the common carotid artery present" and "no pulsation of the common carotid artery present" using video loops of the common car

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Consent of the participating students - Test persons must be students of human medicine (in the clinical section, enrolled at the Philipps University of Marburg). - Students must have sufficient vision (self-assessment) to evaluate the video sequences.

Exclusion criteria

Exclusion criteria: - No existing consent of the students - Students who are not enrolled in the course of study Human Medicine (in the clinical section) - Students of human medicine who are not enrolled at Philipps-Universität Marburg - Technical defect during presentation of the ultrasound sequences

Design outcomes

Primary

Measure	Time frame
Differentiating "pulse" (as a surrogate parameter of cardiac output activity) from its absence can help medical staff make decisions regarding the care of patients with cardiac arrest, PEA or asystole. Especially in the case of pseudo-PEA, pulse control can be significantly more difficult in the presence of a weak pulse pressure wave. In addition, in ROSC - under resuscitation - perfusion of the cerebral vessels is of great importance. There is a descriptive research question. What percentage of the ultrasound loops shown are correctly named by the students. "Pulsation of the common carotid artery present?" Yes, or No. Using B-, M-mode or the colour Doppler.	—

Measure

Time frame

Differentiating "pulse" (as a surrogate parameter of cardiac output activity) from its absence can help medical staff make decisions regarding the care of patients with cardiac arrest, PEA or asystole. Especially in the case of pseudo-PEA, pulse control can be significantly more difficult in the presence of a weak pulse pressure wave. In addition, in ROSC - under resuscitation - perfusion of the cerebral vessels is of great importance. There is a descriptive research question. What percentage of the ultrasound loops shown are correctly named by the students. "Pulsation of the common carotid artery present?" Yes, or No. Using B-, M-mode or the colour Doppler.

—

Secondary

Measure	Time frame
Are the sequences demonstrated later assessed "better" or is there a kind of "learning effect" for the students in the course of the test? Is the decision made faster and / or more "correctly" with increasing test duration? Do the test results differ depending on the level of education or which semester the students belong to? Are there differences in the correct recognition of a pulselessness or an existing pulse depending on whether the sequences are displayed in B-, M-mode or via colour Doppler?	—

Measure

Time frame

Are the sequences demonstrated later assessed "better" or is there a kind of "learning effect" for the students in the course of the test? Is the decision made faster and / or more "correctly" with increasing test duration? Do the test results differ depending on the level of education or which semester the students belong to? Are there differences in the correct recognition of a pulselessness or an existing pulse depending on whether the sequences are displayed in B-, M-mode or via colour Doppler?

—

Countries

Germany

Contacts

Public ContactBenjamin Vojnar

UKGM - Klinik für Anästhesie und Intensivtherapie am Standort Marburg

vojnar@med.uni-marburg.de004964215861123

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Mar 14, 2026