Septic shock caused by Rhizobium radiobacter in an elderly woman: A case report

Abstract

Rationale:Rhizobium radiobacter is a Gram-negative pathogen present in soil and plants. Cases of R radiobacter infection in immunocompromised hosts have been sporadically reported. However, septic shock caused by R radiobacter is rarely seen.Patient concerns:Here, we describe an elderly patient with a rapid progression of watery diarrhea, anorexia, fever, weakness, oliguria, and shock. Blood results showed increased total white blood cell count and C-reactive protein. Arterial blood gas results showed hypoxia and elevated lactate level. The Sequential Organ Failure Assessment score was 11. Blood culture at admission showed Gram-negative bacteria, which were later confirmed as R radiobacter.Diagnosis:Septic shock caused by R Radiobacter.Interventions:The patient was treated with intravenous cefoperazone/sulbactam and sequential oral levofloxacin.Outcomes:The patient recovered completely.Conclusion:R radiobacter may be considered as a potential opportunistic pathogen that may cause severe sepsis in elderly patients, especially those with multiple underlying diseases.