Algorithms have frequently been mistaken for the graphic format in whi
ch they are presented. However, an algorithm is neither a flow chart n
or a list of instructions; it is a step-by-step approach to solving a
problem. Likewise, a clinical algorithm (CA) is a step-by-step approac
h to solving a clinical problem. CAs are deterministic, which does not
mean that they are rigid. They are practical rather than mathematical
algorithms, that can be used only with clinical judgement, and must b
e tailored to each patient. There are a number of types of, or uses fo
r, CAs that can improve sepsis management, including: diagnostic or se
verity score CAs; a management CA for managing sepsis, constructed acc
ording to recently published standards for use in teaching; research p
rotocol algorithms that must be used to collect data or guide implemen
tation of a clinical trial aimed at validating one or more decisions i
n the management CA; and finally, protocol-style CAs drawn from the ma
nagement CA that should be validated using matching outcome studies.