Peritoneal Disorders

The earliest sign of dialysis-associated peritonitis is cloudy peritoneal effluent (the fluid drained during a dialysis exchange), which should normally appear clear and pale yellow. Patients often develop abdominal tenderness, localized or diffuse abdominal pain, fever, and nausea. Anyone on peritoneal dialysis who observes cloudy drainage should contact their nephrology team immediately and save the drained bag for laboratory evaluation, including white blood cell counts, Gram stains, and cultures, so that targeted intraperitoneal antibiotics can be started without delay. How do primary and secondary peritonitis differ in their causes and treatments?::Primary peritonitis (spontaneous bacterial peritonitis, or SBP) develops without an obvious structural tear in the gastrointestinal tract; it typically occurs in individuals with end-stage liver disease and ascites due to bacteria migrating through the bowel wall into the peritoneal fluid. Secondary peritonitis is caused by an acute physical disruption of an abdominal organ, such as an inflamed appendix rupturing, a perforated stomach ulcer, or a ruptured diverticulum. While primary peritonitis is primarily managed with intravenous antibiotics, secondary peritonitis typically requires urgent exploratory surgery to repair the underlying anatomical defect. What is peritoneal carcinomatosis, and how is it clinically addressed?::Peritoneal carcinomatosis is the widespread dissemination of malignant cells throughout the peritoneal membrane, most frequently originating from primary gastrointestinal or gynecological cancers such as colon, appendiceal, gastric, or ovarian malignancies. In addition to systemic chemotherapy and palliative procedures to drain recurrent ascites, selected candidates may undergo cytoreductive surgery (CRS) to remove all visible macroscopic tumor nodules, followed directly by Hyperthermic Intraperitoneal Chemotherapy (HIPEC), which circulates heated chemotherapy directly through the abdominal cavity to kill remaining microscopic tumor cells.