• A state of acute circulatory failure characterized by persistent arterial hypotension despite adequate fluid resuscitation or by tissue hypoperfusion unexplained by other causes.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• A state of acute circulatory failure resulting from organ injury or damage in response to infection that results in dangerously low blood pressure.
  U.S. FDA Glossary
  U.S. Food & Drug Administration, 2021
• Shock caused by infection; frequently caused by gram negative bacteria, although some cases have been caused by other bacteria, viruses, fungi, and protozoa; characterized by fever, chills, tachycardia, tachypnea, and hypotension.
  CRISP Thesaurus
  National Institutes of Health, 2006
• (shock, septic) Sepsis associated with HYPOTENSION or hypoperfusion despite adequate fluid resuscitation. Perfusion abnormalities may include but are not limited to LACTIC ACIDOSIS; OLIGURIA; or acute alteration in mental status.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Over many years, the terms sepsis and septicemia have referred to several ill-defined clinical conditions present in a patient with bacteremia. Definitions have not changed greatly since 1914, when Schottmueller wrote, �Septicemia is a state of microbial invasion from a portal of entry into the blood stream which causes sign of illness.
  Medscape
  WebMD, 2019