Tetanus in adults--a continuing problem: an analysis of 217 patients over 3 years from Delhi, India, with special emphasis on predictors of mortality

Tetanus is still widely prevalent in many parts of the world especially in the developing countries. This study was conducted to assess the demographic and clinical features, treatment and outcome of tetanus in adults with a special emphasis on identification of predictors of mortality. This was a retrospective study of all adult patients admitted with tetanus over a three-year period from 1998 to 2000 at Lok Nayak Hospital, New Delhi, India. The demography, clinical features, treatment and complications of the patients were assessed and were evaluated against two possible outcomes- survival or death, to identify the predictors of mortality. There were 217 adults (148 males, 69 females) admitted with generalized tetanus during the study period. The mean age of the patients was 36.08 +/- 18.84 years. In most instances (63.5%), wounds / injuries served as the source of infection. Overall 31.8% had mild, 21.7% had moderate and 46.5% had severe disease at presentation. Respiratory failure and dysautonomia were the frequently observed complications. Of the 217 patients, 82 died - a mortality rate of 37.78%. Parameters that were significantly associated with increased mortality were: age (especially > 60 years); shorter duration of symptoms - trismus, rigidity and dysphagia; severe disease at presentation and shorter period of onset. Tetanus is a preventable disease associated with a high fatality rate. Universal coverage of immunization programme and appropriate wound prophylaxis is the corner stone of tetanus eradication. The treatment of tetanus is difficult and requires specialized and intensive care. The presence of parameters indicating an adverse outcome at the beginning in the patients will help identify the subset of patients that need more intensive management especially in resource poor nations.