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Original Article

Unchanged mortality in patients with acute cholangitis despite an increase in malignant etiologies – a 25-year epidemiological study

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Pages 335-341 | Received 16 Nov 2018, Accepted 17 Feb 2019, Published online: 04 Apr 2019
 

Abstract

Background and aims: Acute cholangitis (AC) is a rare but serious condition, with an incidence of 7.0 per 10,000 people and mortality rates up to 10%. The aim of this study was to describe changes in obstruction etiology, comorbidities, clinical factors, and mortality among AC patients during a 25-year period.

Methods: Using a database of 11,563 consecutive ERCP-procedures performed from 1990–2015 at Odense University Hospital, we identified all AC cases during that period. Clinical and epidemiological data were collected from the database and the Danish Patient Registry. Association with 30-day mortality was investigated using multiple logistic regression analysis with adjustment for confounding factors.

Results: In total, 775 consecutive and individual cases of AC were included. Among cases, 42% (n = 326) were of malignant etiology, with an increasing incidence over time (regression coefficient [95% CI]: 0.03 [0.01–0.04] per year; p = .01). Mean Charlson Comorbidity Index was 1.4, with an increase over time (regression coefficient [95% CI]: 0.04 [0.03–0.05] per year; p < .01). Malignant obstruction etiology was associated with 30-day mortality (OR [95% CI]: 1.11 [1.04–1.18]; p < .01). Overall 30-day mortality was 12% (n = 91). After adjustment for confounding factors, no significant changes in 30-day mortality were observed over time (OR [95% CI]: 1 [1–1.00]; p = .91 per year).

Conclusion: Significant increases in the incidence of malignant obstruction etiology and severity of comorbidities among AC patients were observed during the study period. Despite those findings, 30-day mortality remained unchanged, potentially reflecting a general improvement in the management of AC.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This project was supported financially by the Novo Nordisk Fonden [reference number: NNF15OC0016788] and the Odense University Hospital Free Research Fund [project number: 10212037].

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