K76.7

Clinical Causes: Severe liver cirrhosis or advanced liver failure Portal hypertension, leading to abnormal blood flow Systemic vasodilation, reducing effective blood volume Infections such as spontaneous bacterial peritonitis (SBP) Gastrointestinal bleeding from varices Use of certain medications that impair kidney function Liver tumors or hepatocellular carcinoma

Key Symptoms: Decreased urine output Swelling in the legs and abdomen (ascites) Muscle weakness Confusion or mental clouding Fatigue Nausea and decreased appetite Signs of worsening liver disease, such as jaundice Fluid retention causing weight gain

Diagnosis Path: Diagnosing hepatorenal syndrome involves a combination of clinical evaluation and laboratory tests. Key steps include: - Assessing the patient’s medical history and physical symptoms - Blood tests to evaluate kidney function (blood urea nitrogen, serum creatinine) - Urinalysis to exclude other causes of kidney failure - Imaging studies like ultrasound to examine the kidneys and liver - Excluding other possible causes of kidney impairment, such as dehydration or infections The International Club of Ascites recommends specific criteria for diagnosing HRS, including a significant increase in serum creatinine without other identifiable causes of kidney disease or failure.

Treatment Protocols: Managing hepatorenal syndrome focuses on improving kidney function and addressing underlying liver disease. Approaches include: - Medications such as vasoconstrictors (e.g., terlipressin) to improve blood flow to the kidneys - Albumin infusions to expand blood volume and support kidney function - Treatment of precipitating factors, like infections or gastrointestinal bleeding - Liver support measures, potentially including transplantation - Avoiding nephrotoxic drugs and other substances that may harm the kidneys Careful monitoring and supportive care are essential, often involving a multidisciplinary team of healthcare providers to optimize outcomes.