In Candida septic shock, each hour of antifungal delay tracked with lower survival

Design

Multicentre retrospective cohort

Population

850 adults with culture-positive Candida septic shock at 32 hospitals

Primary outcome

Hospital survival by delay from persistent hypotension to appropriate antifungal

Effect

Adjusted OR of death 1.045 per hour (1.035–1.056); survival 86% if treated within 2 hours; median delay 32.3 hours

A retrospective cohort in Critical Care Medicine, published on 21 October, studied 850 adults with culture-positive Candida septic shock at 32 hospitals in Canada, the United States and Saudi Arabia between 1989 and 2018.

Survival was 86% when an appropriate antifungal started within two hours of persistent hypotension. After that, survival fell by about 5% for each hour of delay, out to 10 to 12 hours. The adjusted odds of death rose 4.5% per hour. Time to appropriate antifungal was the strongest single predictor of outcome, ahead of illness severity. Yet the median delay was 32 hours, and fewer than one in five patients were treated within six hours.

The practical difficulty is that Candida is rarely known at the onset of shock. The lesson is to think of it early in patients with risk factors: abdominal surgery or leak, total parenteral nutrition, broad-spectrum antibiotic exposure, central lines, Candida colonisation at several sites, or neutropenia.

The data span three decades and are observational, but the pattern mirrors the established time-to-antibiotic relationship in bacterial septic shock.

• Consider empirical antifungal cover in septic shock with Candida risk factors, such as recent abdominal surgery, parenteral nutrition or multi-site colonisation.
• Do not wait for blood cultures to turn positive in a high-risk patient deteriorating on antibiotics.
• Check local susceptibility patterns, including for Candida auris, when choosing the agent.
• Review and de-escalate antifungals once cultures and clinical course are clear.

Why it matters

Most patients waited more than a day for the drug that most predicted survival.

Don't overread it

This is retrospective and observational; sicker or more obvious cases may have been treated sooner.

The statistics, in plain English

An odds ratio of 1.045 per hour (95% CI 1.035 to 1.056) sounds small but compounds: over ten hours it adds up to substantially higher odds of death. Because the cohort spans 1989 to 2018, antifungal choices and ICU care changed over the period.

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