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[Doppler ultrasound monitoring during vascular interventions]
D Kummer-Kloess1, W Kloess, M Zwaan
1Klinik für Angiologie und Geriatrie, Medizinische Universität zu Lübeck.
Insights
Continuous Doppler ultrasound with a novel probe holder provides real-time arterial flow velocity monitoring during interventions. This enhances detection and correction of complications, improving patient outcomes in angiology.
Area of Science:
- Vascular Medicine
- Diagnostic Imaging
- Medical Device Technology
Background:
- Doppler ultrasound provides discontinuous flow velocity data in angiology.
- Continuous monitoring is crucial for evaluating flow disturbances during interventions like angioplasty and stenting.
Purpose of the Study:
- To develop and evaluate a probe holder for continuous Doppler ultrasound insonation.
- To enable real-time monitoring of arterial flow velocities during radiologic interventions.
Main Methods:
- A miniature 8-MHz pulsed-wave Doppler probe was fixed to the skin using a developed probe holder.
- Continuous insonation was performed on 40 patients undergoing lower limb arterial interventions.
Main Results:
- The probe holder facilitated continuous monitoring during interventions.
- Complications such as occlusions, thrombi, and emboli were detected immediately.
- Immediate detection allowed for timely correction of complications.
Conclusions:
- Continuous Doppler ultrasound with the probe holder is effective for real-time monitoring in interventional angiology.
- This technique improves the detection and management of intra-procedural complications.
- It offers immediate information on flow velocity changes during interventions.
Abstract:
Doppler ultrasound examination as diagnostic device in angiology yields only discontinuous information on flow velocities in vessels during insonation with hand-held probes. Continuous insonation and therefore determination of flow velocities in arteries are necessary to evaluate flow disturbances and changes of flow velocities during radiologic invasive interventions, i.e. implantation of stents, during percutaneous transluminal angioplasty therapy or local lysis. This modification of Doppler ultrasound examination is already used in neurosurgery for permanent monitoring of flow velocities in large brain vessels in one or both hemispheres during therapy. In our institute we developed a probe holder device to fix a miniature Doppler ultrasound probe (8-MHZ pulsed-wave probe) on the skin surface. Therefore continuous insonation during the manipulations is easy to realize. Information about complications such as occlusions, thrombi, emboli and changes in flow velocity is immediately present on the screen. We have monitored 40 patients during radiologic interventional therapy in arteries of the lower limb. Complications during the interventions were detected immediately and could be corrected.