Constipation in critical care patients: both timing and duration matter

Area of Science:

• Critical Care Medicine
• Gastroenterology
• Clinical Outcomes Research

Background:

• Constipation is commonly defined by the absence of stool post-ICU admission.
• The impact of both the duration and timing of constipation in critical care patients remains underexplored.

Purpose of the Study:

• To investigate the influence of constipation duration and timing on patient outcomes in the intensive care unit (ICU).

Main Methods:

• A prospective, bi-center observational study included 182 critical care patients.
• Patients were categorized into 'not constipated', '3-5 days without stool', and 'at least 6 days without stool' subgroups.
• Further classification distinguished 'early' (constipation onset near ICU admission) and 'late' (constipation onset later in ICU stay) constipation.

Main Results:

• Patients with longer constipation durations (≥6 days) had significantly longer mechanical ventilation times and ICU stays.
• The '3-5 days' constipation group experienced longer ICU stays compared to non-constipated patients.
• Late-onset constipation (≥6 days) was associated with significantly worse survival outcomes compared to all other patient groups.

Conclusions:

• Both the timing and duration of infrequent defecation are significant factors influencing critical care patient outcomes.
• These factors should be considered in the diagnostic criteria for constipation in ICU patients.