Clinical characteristics of infective endocarditis with vertebral osteomyelitis

The relationship between infective endocarditis (IE) and vertebral osteomyelitis (VO) is uncertain. This study investigates the incidence of VO in patients with IE and the outcome of IE-associated VO. Among 58 patients with IE at Musashino Red Cross Hospital from January 2002 to July 2009, 11 patients (19.0%) had VO. Back pain was reported in all cases with VO. Because the antibiotics treatment for VO should continue for 6-8 weeks, hospital stay was significantly longer for patients with VO (75.8 +/- 41.0 days) compared to patients without VO (42.6 +/- 30.4 days; P = 0.0035). Although 6 hospital deaths (15.8%) occurred among the patients without VO, there were no hospital deaths among patients with VO. The 30- and 80-month survival was not significantly different between the patients with VO and without VO (30-month: 88.9% vs 81.7%, 80-month: 88.9% vs 74.3%, respectively). When specifically sought, the incidence of VO is high in patients with IE. VO does not appear to worsen the prognosis of IE, although the need for long hospital stays seems to be more frequent.