ATLAS_score_for_C_difficile_infection v.1

A tool to predict treatment response to Clostridium difficile infection (CDI).

Winner Ng

dokter.winner@gmail.com

@CambioCDS

To predict the treatment response (cure rate) in the cases of CDI.

To be used at the time of CDI diagnosis, for example within 48 hours of a positive C. difficile toxin assay, and when planning to administer fidaxomicin or vancomycin. ATLAS Score consists of five assessment criteria hence the abbreviation "ATLAS": - Age (<60 years: 0 point, 60-79 years: 1 point, ≥80 years: 2 points) - Treatment with systemic antibiotics for one or moredays of CDI therapy (No: 0 point, Yes: 2 points) - Leukocyte count (<16,000 cells/µL: 0 point, 16,000-25,000 cells/µL: 1 point, >25,000 cells/µL: 2 points) - Albumin (serum level) (>35 g/L: 0 point, 26-35 g/L: 1 point, ≤25 g/L: 2 points) - Serum creatinine (≤120 μmol/L: 0 point, 121-179 μmol/L: 1 point, ≥180 μmol/L: 2 points) The ATLAS score is calculated by the summation of all the points. The predicted cure rate is calculated based on the formula: Cure rate = 100 – [5.08 × (ATLAS score)]

Not to be used for continuous evaluation during the treatment.

1. Miller MA, Louie T, Mullane K, et al. Derivation and validation of a simple clinical bedside score (ATLAS) for Clostridium difficile infection which predicts response to therapy. BMC Infect Dis. 2013;13:148. 2. Miller MA. ATLAS - A Bedside Scoring System Predicting Mortality Due to Clostridium Difficile Infection (CDI) in Elderly Hospitalized Patients. 48th IDSA Annual Meeting. 2010;P452.

OBSERVATION.basic_demographic.v1, OBSERVATION.atlas_score_for_c_difficile_infection.v0, OBSERVATION.lab_test-full_blood_count.v1, OBSERVATION.lab_test-liver_function.v1, OBSERVATION.lab_test_creatinine.v1