Sir, I refer to the letter entitled Odd practice (BDJ 2009; 207: 464–465) and would like to remind readers that atheromatous blockage is not confined to arteries but is at least as important as a neurological risk factor in the internal jugular vein.1 Early warning of any blockage of blood supply to or drainage from the brain is vital to avert long-term neurological damage and any method that shows this is welcome.
References
Zamboni P, Menegatti E, Galeotti R, Malagoni A M et al. The value of cerebral Doppler venous haemodynamics in the assessment of multiple sclerosis. J Neurol Sci 2009; 282: 21–27.
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Carmichael, A. Averting damage. Br Dent J 207, 568 (2009). https://doi.org/10.1038/sj.bdj.2009.1145
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DOI: https://doi.org/10.1038/sj.bdj.2009.1145
