What is the Charcot triad?

The Charcot triad is the classic combination of fever, jaundice, and right-upper-quadrant pain that suggests acute cholangitis; not all patients show all three features.

Why is biliary drainage central to acute cholangitis?

Because the infection occurs in an obstructed, high-pressure biliary system, relieving the obstruction (decompression) is the key principle of management; the specific method and timing are individualized and beyond this reference entry.

Acute Cholangitis

Acute cholangitis is infection of the biliary tree, typically arising when an obstructed bile duct - most often from a stone - becomes colonised by bacteria, producing fever, jaundice, and right-upper-quadrant pain. It is a potentially life-threatening condition that depends on prompt recognition, supportive care, and timely biliary drainage to relieve the obstruction.

Definition

Acute cholangitis is an acute bacterial infection of the biliary system that occurs in the setting of biliary obstruction and bile stasis, characterised clinically by fever, jaundice, and abdominal pain.

Scope

This topic covers the pathophysiology of biliary obstruction and infection, the classic clinical features and their standardised diagnostic criteria, severity grading, and the central role of biliary decompression. It is a reference account of the condition and is not individualized clinical advice.

Key concepts

Biliary obstruction and bile stasis
Charcot triad (fever, jaundice, right-upper-quadrant pain)
Reynolds pentad
Tokyo Guidelines diagnostic criteria and severity grading
Biliary drainage and decompression
Choledocholithiasis as a common cause

Mechanisms

Acute cholangitis arises from the combination of biliary obstruction and bacterial infection. Obstruction - commonly by a common-bile-duct stone, but also by strictures or tumours - causes bile stasis and raised intraductal pressure, which promotes bacterial proliferation and allows translocation of organisms and their products from the obstructed duct into the bloodstream, producing systemic sepsis. The classic Charcot triad of fever, jaundice, and right-upper-quadrant pain reflects this process; addition of hypotension and altered mental status (Reynolds pentad) indicates severe, suppurative disease.

Clinical relevance

Acute cholangitis is a biliary emergency in which the combination of infection and obstruction can progress rapidly to sepsis; the Tokyo Guidelines provide standardised diagnostic criteria and a three-tier severity grading that frame how the condition is described and stratified, and timely biliary drainage is the defining principle of management. This entry summarises the condition for reference and educational purposes and is not a basis for individual treatment decisions.

Epidemiology

Most cases of acute cholangitis are caused by choledocholithiasis (stones in the common bile duct), with benign and malignant strictures and instrumentation of the biliary tree as other causes; it therefore shares risk factors with gallstone disease.

Evidence & guidelines

The Tokyo Guidelines 2018 define diagnostic criteria and a severity grading (Grade I-III) for acute cholangitis and provide associated antimicrobial guidance, serving as the principal international reference framework; the guidelines emphasise biliary drainage according to severity.

Seminal works

kiriyama-2018
gomi-2018

Frequently asked questions

What is the Charcot triad?: The Charcot triad is the classic combination of fever, jaundice, and right-upper-quadrant pain that suggests acute cholangitis; not all patients show all three features.
Why is biliary drainage central to acute cholangitis?: Because the infection occurs in an obstructed, high-pressure biliary system, relieving the obstruction (decompression) is the key principle of management; the specific method and timing are individualized and beyond this reference entry.