Related Experiment Videos
Cerebral ischemia induced by compression tests during transcranial Doppler sonography
1Neurologische Abteilung, Universitätsklinikum Steglitz, Freie Universität Berlin.
The Clinical Investigator
|January 1, 1993
Summary
Compression tests during transcranial Doppler sonography may cause focal cerebral ischemias, even reversible ones. These risks suggest routine use of these diagnostic tests for carotid stenosis is not advised.
Area of Science:
- Neurology
- Vascular Surgery
Background:
- Transcranial Doppler (TCD) sonography with compression tests aids in identifying cerebral vessels and assessing collateral circulation within the circle of Willis.
- This information is considered valuable for managing patients with extracranial carotid stenoses and planning bypass surgeries.
Observation:
- A retrospective analysis of 380 cases identified two patients with symptomatic carotid artery stenoses who experienced three compression-induced focal cerebral ischemias.
- Two of these ischemic events initiated during the compression test, with deficits being reversible.
- One patient experienced a delayed onset of an additional, persistent motor deficit.
Findings:
- The diagnostic benefit of compression tests in TCD sonography remains unestablished.
- The risks associated with these compression maneuvers are not well-defined.
Implications:
- The potential for inducing cerebral ischemia, even if transient, raises concerns about the safety of routine compression testing.
- Current evidence does not support the routine use of compression tests during TCD sonography for carotid stenosis evaluation.
- Further research is needed to clarify the risks and benefits before widespread adoption.