Mild to moderate intra-abdominal hypertension: Does it matter?

Area of Science:

• Critical Care Medicine
• Surgical Physiology
• Gastroenterology

Background:

• Intra-abdominal hypertension (IAH) affects approximately 40% of intensive care unit (ICU) patients.
• While abdominal compartment syndrome prevalence decreases, IAH prevalence remains high, with most cases being mild to moderate (Grade I-II).
• Current research often treats IAH as a binary condition, neglecting the impact of varying severity grades.

Purpose of the Study:

• To review the epidemiology, pathophysiological effects, and outcome impact of mild to moderate IAH (Grade I-II).
• To identify limitations in current IAH treatment guidelines.
• To highlight areas for future research in IAH management.

Main Methods:

• Literature review summarizing existing studies on IAH.
• Analysis of epidemiological data, pathophysiological consequences, and patient outcomes.
• Critical evaluation of current treatment recommendations and research gaps.

Main Results:

• Even mild IAH negatively affects tissue perfusion and microcirculation.
• IAH is associated with increased hospital stay and duration of mechanical ventilation.
• The impact of IAH on mortality is debated and likely influenced by patient-specific factors and circulatory status.

Conclusions:

• Clear intervention thresholds for mild to moderate IAH are not established.
• Management strategies for IAH should consider individual patient characteristics and circulatory status.
• Further research is crucial to define the clinical significance of mild to moderate IAH and establish precise intervention triggers.