Prospective validation of AIIMS index as a predictor of steroid failure in patients with acute severe ulcerative colitis.
AIIMS index
Acute severe ulcerative colitis
Colectomy
Oxford criteria
Steroid failure
Journal
Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology
ISSN: 0975-0711
Titre abrégé: Indian J Gastroenterol
Pays: India
ID NLM: 8409436
Informations de publication
Date de publication:
06 2022
06 2022
Historique:
received:
02
04
2021
accepted:
19
07
2021
pubmed:
28
4
2022
medline:
17
8
2022
entrez:
27
4
2022
Statut:
ppublish
Résumé
Optimal outcomes in acute severe ulcerative colitis (ASUC) are related to time-bound management based upon early prediction of response to intravenous (IV) steroids. In an earlier study, we described the All India Institute of Medical Sciences (AIIMS) index (baseline Ulcerative Colitis Endoscopic Index of Severity [UCEIS] ≥ 7 and day 3 fecal calprotectin [FCP] > 1000 μg/g) for predicting failure of IV steroids. The current study is designed to validate this index in a prospective cohort. IV steroid-naïve patients with ASUC, satisfying Truelove and Witts' criteria, hospitalized from August 2018 to July 2019 were included. Patients' assessment included baseline sigmoidoscopy, day 1 and 3 FCP, hemogram, biochemistry and day 3 C-reactive protein. All patients received IV steroids, and the primary outcome was steroid failure, defined as the need for colectomy or rescue therapy with cyclosporine (CYC)/infliximab (IFX) during admission. Of the 47 patients, eight were excluded (four received steroids outside, two were directly taken for surgery/infliximab therapy, one had toxic megacolon, and one had infectious colitis), and 39 patients were included (mean age: 36.1 ± 12.6 years, male: 31%). Fifteen patients (38%) failed IV steroid and required rescue therapy (IFX: 9, CYC: 2, Colectomy: 3, IFX followed by colectomy: 1). On univariate analysis, UCEIS ≥ 7 at baseline (p = 0.006), day 1 FCP (p = 0.03), day 3 FCP > 1000 μg/g (p = 0.001), Oxford criteria (p = 0.04) and AIIMS index (p < 0.001) were significantly different between steroid responders and steroid failures. On multivariate analysis, day 3 FCP > 1000 μg/g (odds ratio (odds ratio (OR)= 6.4;(95% CI =2.2-196.1) and baseline UCEIS ≥ 7 (OR) = 10.1;(95% CI = 2.1-80.2) were independent predictors. The AIIMS index predicted steroid failure with a better specificity (100% vs. 83%, p = 0.04) and positive predictive value (100% vs. 64%, p = 0.03) than Oxford criteria. AIIMS index has been validated in 39 prospective ASUC patients as an effective early predictor of steroid failure (sensitivity = 53%, specificity = 100%).
Sections du résumé
BACKGROUND
Optimal outcomes in acute severe ulcerative colitis (ASUC) are related to time-bound management based upon early prediction of response to intravenous (IV) steroids. In an earlier study, we described the All India Institute of Medical Sciences (AIIMS) index (baseline Ulcerative Colitis Endoscopic Index of Severity [UCEIS] ≥ 7 and day 3 fecal calprotectin [FCP] > 1000 μg/g) for predicting failure of IV steroids. The current study is designed to validate this index in a prospective cohort.
METHODS
IV steroid-naïve patients with ASUC, satisfying Truelove and Witts' criteria, hospitalized from August 2018 to July 2019 were included. Patients' assessment included baseline sigmoidoscopy, day 1 and 3 FCP, hemogram, biochemistry and day 3 C-reactive protein. All patients received IV steroids, and the primary outcome was steroid failure, defined as the need for colectomy or rescue therapy with cyclosporine (CYC)/infliximab (IFX) during admission.
RESULTS
Of the 47 patients, eight were excluded (four received steroids outside, two were directly taken for surgery/infliximab therapy, one had toxic megacolon, and one had infectious colitis), and 39 patients were included (mean age: 36.1 ± 12.6 years, male: 31%). Fifteen patients (38%) failed IV steroid and required rescue therapy (IFX: 9, CYC: 2, Colectomy: 3, IFX followed by colectomy: 1). On univariate analysis, UCEIS ≥ 7 at baseline (p = 0.006), day 1 FCP (p = 0.03), day 3 FCP > 1000 μg/g (p = 0.001), Oxford criteria (p = 0.04) and AIIMS index (p < 0.001) were significantly different between steroid responders and steroid failures. On multivariate analysis, day 3 FCP > 1000 μg/g (odds ratio (odds ratio (OR)= 6.4;(95% CI =2.2-196.1) and baseline UCEIS ≥ 7 (OR) = 10.1;(95% CI = 2.1-80.2) were independent predictors. The AIIMS index predicted steroid failure with a better specificity (100% vs. 83%, p = 0.04) and positive predictive value (100% vs. 64%, p = 0.03) than Oxford criteria.
CONCLUSION
AIIMS index has been validated in 39 prospective ASUC patients as an effective early predictor of steroid failure (sensitivity = 53%, specificity = 100%).
Identifiants
pubmed: 35474175
doi: 10.1007/s12664-021-01217-0
pii: 10.1007/s12664-021-01217-0
doi:
Substances chimiques
Leukocyte L1 Antigen Complex
0
Steroids
0
Infliximab
B72HH48FLU
Types de publication
Journal Article
Validation Study
Langues
eng
Sous-ensembles de citation
IM
Pagination
273-283Informations de copyright
© 2022. Indian Society of Gastroenterology.
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