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J R Soc Med. 2006 August; 99(8): 386.
PMCID: PMC1533503

Bilateral chronic subdural haematoma

The proposition that chronic subdural haematoma (CSH) is largely amenable to surgical treatment1 can only be substantiated, in the short term, by a national audit of neurosurgical practice, and, in the long term, by a randomized controlled trial. The latter strategy was the one suggested by a leading neurosurgical authority who noted that there were no randomized controlled trials to yield class I evidence supporting any of the treatment options for chronic subdural haematoma; and that the available class II evidence relied on only six trials.2

What is even more worrying is the reliance, at least in one instance, on case control studies such as the one dating back to 1992,3 which was subsequently cited as recently as 1999 to support a proposed management option for CSH.4 In essence, that option was based on the premise that ‘... there is little point in active treatment over the age of 65 for those who remain in coma (Glasgow Come Scale 8 or less) for more than 6 hours...’.4 Such statements, I maintain, should, at least, be qualified by the acknowledgement that, given the biological diversity of the over 65s, clinical outcomes in that age group might be better predicted by the biological age/physiological reserve index than by chronological age.5

Notes

Competing interests None declared.

References

1. Suman S, Meenakshisundaram S, Woodhouse P. Bilateral chronic subdural haematoms: a reversible cause of parkinsonism. J R Soc Med 2006;99: 91-2 [PMC free article] [PubMed]
2. Dunn LT. Surgery for chronic subdural haematoma: is there an evidence base? J Neurol Neurosurg Psychiat 2003;74: 842 [PMC free article] [PubMed]
3. Jamjoom A, Nelson R, Stranjalis G, et al. Outcome following surgical evacuation of traumatic intracranial haematomas in the elderly. Br J Neurosurg 1992;6: 27-32 [PubMed]
4. Maurice-Williams RS. Head injuries in the elderly. Br J Neurosurg 1999;13: 5-8 [PubMed]
5. Goffaux J, Friesinger GC, Lambert W, et al. Biological age-a concept whose time has come: a preliminary study. S Med J 2005;98: 985-93 [PubMed]

Articles from Journal of the Royal Society of Medicine are provided here courtesy of Royal Society of Medicine Press