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HAEMATOGENOUS SPINAL INFECTION IN THE ELDERLY: TOO MANY, TOO LITTLE, TOO LATE



Abstract

Pyogenic haematogenous spinal infection in the elderly, described as spondylodiscitis, vertebral osteomyelitis and epidural abscess is considered a rare but life threatening condition. Our objective was to test the hypothesis that low index of suspicion leads to delayed diagnosis and referral for definitive treatment resulting in increased and perhaps avoidable medical morbidity, social drift including early mortality and to analyse pathological entities, complications and optimum treatment options.

We performed a retrospective review of medical records over 10-year period. Post-operative infections and patients under 65 years old excluded. Initial presentation, investigations and differential diagnosis, time to diagnosis, date and day of referral, mode of definitive treatment, pathologic entities, complications and outcomes were noted. Patient outcomes were measured as duration of treatment, length of hospital stay, complications, ambulatory status, complications, discharge destination and death. Outcomes were correlated with delayed diagnosis and referral.

46 elderly (age> 65) patients with a mean age of 71 years (range=65–91). 62% referral from physicians. Fever with malaise associated with chronic LBP was the commonest presenting complaint. There were 31 patients with discitis, 12 epidural abscess and 3 osteomyelitis. Lumbar spine was affected in 63% patients. Time to diagnosis ranged from 2–17 days with mean of 8 days. Mean referral time was 9 days with 39% referrals on Friday. Staphylococcus aureus (47%) was the commonest organism isolated. Duration of hospitalisation ranged from two to twelve weeks. 46% required surgical decompression with four cases of related mortality during acute hospital stay.

Time duration to spinal referral had direct correlation with increase in morbidity, social drift and mortality. The incidence of haematogenous spinal infection in the elderly has increased over the years in our series, contrary to popular belief. A high index of suspicion in elderly patients with PUO promotes early diagnosis and optimises outcome.

Correspondence should be addressed to Editorial Secretary Mr ML Costa or Assistant Editorial Secretary Mr B.J. Ollivere at BOA, 35–43 Lincoln’s Inn Fields, London WC2A 3PE, England; Email: mattcosta@hotmail.com or ben@ollivere.co.uk