Related Experiment Video
Updated: Jul 13, 2026
04:01
Point of Care Transcranial Color-Coded Duplex Ultrasound of the Middle Cerebral Artery
Published on: August 9, 2024
Color and pulsed Doppler sonography for arterial bleeding detection
Wenbo Luo1, Vesna Zderic, Frederick A Mann
1Department of Bioengineering, University of Washington, Seattle, WA 98195, USA. wenbo@u.washington.edu
Summary
Doppler sonography can identify bleeding in extremities by detecting unique velocity patterns and turbulence at the injury site. This technology aids in rapid hemorrhage control on the battlefield.
Area of Science:
- Medical imaging
- Vascular surgery
- Emergency medicine
Background:
- Hemorrhage from extremity penetrating injuries is a leading cause of preventable battlefield deaths.
- Effective hemorrhage control requires rapid detection and localization of vascular bleeding.
- Current methods often require specialized training and are not suitable for pre-hospital settings.
Purpose of the Study:
- To evaluate Doppler sonography's capability in characterizing bleeding sites in extremities.
- To determine if quantitative Doppler parameters can pinpoint vascular injury locations.
Main Methods:
- Twenty-four rabbit femoral arteries were punctured with an 18-gauge needle.
- Pulsed and color Doppler ultrasound interrogated five locations: injury site, proximal/distal to injury, and bleeding jet neck/tip.
- Doppler signals were compared between normal and injured vessels.
Main Results:
- Pulsed Doppler showed significantly increased systolic and diastolic velocities at the injury site and bleeding jet neck.
- The bleeding jet tip exhibited venous-like flow patterns.
- Color Doppler revealed localized turbulence (checkered patterns) at the injury site.
Conclusions:
- Doppler sonography, both color and pulsed, accurately localizes vascular injury sites.
- These findings suggest Doppler ultrasound can facilitate timely hemorrhage control in battlefield scenarios.
More Related Videos
Related Concept Videos
01:19Assessing Blood pressure using a doppler ultrasound
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
01:30Equipments Used To Measure Blood Pressure
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
01:16Pulse
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...
The pulse serves as a clinical indicator...