A 48-year-old man establishes care at a new primary care clinic. He has not seen a healthcare provider in 15 years. He reports a history of intravenous drug use in his twenties but has been in recovery for 20 years. He is currently asymptomatic, and his physical examination is unremarkable. The physician discusses Hepatitis C virus (HCV) screening, which the patient agrees to undergo. Assuming each diagnostic step yields positive or abnormal results that necessitate further action, arrange the following clinical steps in the correct chronological sequence for this patient's screening and preventive care cascade.
- 1Perform initial screening with a hepatitis C virus (HCV) antibody test
- 2Confirm active chronic infection with an HCV RNA polymerase chain reaction (PCR) test
- 3Determine the extent of hepatic fibrosis using noninvasive testing
- 4Initiate hepatocellular carcinoma surveillance with semiannual abdominal ultrasounds
Answer
The correct sequence is: HCV antibody test, followed by HCV RNA PCR, then hepatic fibrosis staging, and finally hepatocellular carcinoma surveillance.
The clinical cascade for Hepatitis C begins with universal screening using the HCV antibody test. Because antibodies remain positive even if the patient spontaneously clears the virus (which occurs in roughly 20-30% of cases), an HCV RNA PCR is required next to confirm active viremia. Once chronic infection is established, staging the degree of liver fibrosis (e.g., using elastography or serum biomarkers) is a mandatory next step to establish the patient's prognosis. Finally, if the patient is found to have advanced fibrosis or cirrhosis during staging, secondary preventive surveillance for hepatocellular carcinoma with an abdominal ultrasound every 6 months must be initiated.
Step-by-Step Solution
Key Concept
Hepatitis C Virus (HCV) Screening and Management Cascade