Ascites and intraabdominal infection.

Area of Science:

• Critical care medicine
• Gastroenterology
• Infectious disease

Background:

• Ascites and intraabdominal infections are common complications in critically ill patients, particularly those with cirrhosis.
• Traditional understanding focused on hydrostatic and Starling forces, but emerging evidence points to complex pathophysiological mechanisms.

Purpose of the Study:

• To review current trends in the diagnosis, treatment, and pathogenesis of ascites and intraabdominal infection.
• To provide an overview for critically ill patients, both cirrhotic and noncirrhotic.

Main Methods:

• Literature review of recent studies on ascites and intraabdominal infection.
• Analysis of pathophysiological concepts, diagnostic tools, and therapeutic interventions.

Main Results:

• Bacterial translocation from the gut is a key factor, evidenced by bacterial DNA in sterile ascites and serum.
• Splanchnic vasodilatation, induced by factors like hypoxia and carbon monoxide, contributes to disease progression.
• Novel diagnostic methods like colorimetric test strips and automated counters improve spontaneous bacterial peritonitis detection.
• Vasopressin V2-antagonists offer new therapeutic options for hyponatremia.

Conclusions:

• Pathogenesis is redefined by bacterial translocation, mesenteric inflammation, and altered splanchnic circulation.
• These dynamic processes, rather than solely hydrostatic forces, dictate the occurrence, severity, and outcomes of ascites and infection.
• Updated diagnostic and therapeutic approaches are crucial for managing these complex conditions in critically ill patients.