Precordial Doppler Monitoring

Precordial Doppler Monitoring for Venous Air Embolism in Neurosurgery

Elevated Risk in Neurosurgical Procedures
Venous air embolism (VAE) is a serious potential complication during neurosurgery. While all neurosurgical procedures carry some risk, those performed in the sitting, semi-sitting, or inclined positions—such as craniotomies, craniosynostosis repairs, or posterior fossa surgeries—pose a significantly higher threat.
Precordial Doppler monitoring offers a reliable method for detecting air bubbles in the right heart chambers. By placing the transducer on the anterior chest wall after patient positioning, clinicians can monitor for embolic events in real time.

Real-Time Audio & Visual Alerts
DWL Doppler systems deliver both visual and audible feedback of Doppler flow velocities. The distinctive sound of air entering the heart cavities can be rapidly identified, allowing anaesthetists and surgeons to respond promptly and effectively to mitigate complications.

Key Features of the Precordial Doppler System
• Reusable Probe: Non-disposable design reduces long-term service costs
• Easy Application: Flat probe holder with adhesive fixations for secure placement
• Event Buffering: Stores up to 60 seconds of signal data, with DICOM integration for streamlined reporting
• Visual Guidance: Doppler velocity waveforms assist in precise probe positioning
• Depth Control: PW Doppler allows sample volume depth adjustment for optimal signal acquisition
• Compact Design: Available with roll-cart or rail clamp to minimize footprint in the operating theatre

Versatile Monitoring Capabilities
Beyond intraoperative use, DWL monitors can be configured for:
• Transcranial Doppler (TCD)
• Extracranial Doppler (ECD)
• Peripheral Vascular Monitoring
• Pre-operative PFO Detection: Identify a Patent Foramen Ovale before surgery to reduce embolic risk

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