A nurse is caring for a 45-year-old client admitted with acute hepatitis B, reporting jaundice, dark urine, and loss of appetite. Laboratory results show elevated bilirubin and ALT levels, and the client tests positive for HBsAg. Which intervention should the nurse prioritize to prevent transmission of the virus to others?

Standard and contact precautions are prioritized for hepatitis B, transmitted via blood/body fluids, not airborne (choice 1). Negative pressure rooms are for airborne infections, HBIG is for post-exposure prophylaxis, and visitor restrictions are unnecessary with education.

Understanding the Priority: Breaking the Chain of Infection
For a client with acute hepatitis B, the immediate nursing priority is to break the chain of infection at the portal of exit. Hepatitis B virus (HBV) is a bloodborne pathogen, and the primary mode of transmission in healthcare settings is through percutaneous or mucosal exposure to infected blood and certain body fluids. The client’s positive HBsAg (hepatitis B surface antigen) indicates active viral replication and high infectivity. While the client’s jaundice and dark urine reflect impaired bilirubin metabolism due to hepatocyte damage, the nurse’s first action must focus on safety—protecting staff, other patients, and visitors from exposure. Standard precautions, as mandated by the OSHA Bloodborne Pathogens Standard, form the foundation of this protection ^[1]. This includes rigorous hand hygiene, the use of gloves and other personal protective equipment (PPE) when anticipating contact with blood or body fluids, and safe handling of sharps. These measures are not optional; they are a federal regulatory requirement designed to minimize occupational exposure incidents, which are a significant risk for healthcare workers and students alike ^[2].

Why Not the Other Options?
Option 2, placing the client in a private room with negative air pressure ventilation, is incorrect because HBV is not transmitted via the airborne route. Negative pressure rooms are reserved for diseases like tuberculosis or measles, where infectious particles remain suspended in the air. Hepatitis B requires contact and droplet precautions only for specific procedures generating splashes, not airborne isolation. Option 3, administering hepatitis B immune globulin (HBIG) to all staff members, is not a standard or appropriate intervention. HBIG is used for post-exposure prophylaxis (PEP) in unvaccinated individuals after a documented exposure, such as a needlestick injury, not as a blanket preventive measure for an entire unit. The cornerstone of prevention is the hepatitis B vaccine series, which provides long-term immunity. Option 4, restricting all visitors, represents an unnecessary and overly restrictive approach. Visitors can safely interact with the client if they are educated on and adhere to standard precautions, particularly hand hygiene and avoiding contact with blood or body fluids.

Deep Dive into Clinical Application and Safety
The rationale for prioritizing infection control precautions is deeply rooted in the epidemiology of occupational exposure. Studies consistently show that nursing students and healthcare workers are at an elevated risk of contracting HBV, with a risk four times higher than the general population . A significant gap often exists between knowledge and practice; research indicates that while many nursing students understand the theory of bloodborne pathogen transmission, their actual compliance with standard precautions and reporting of exposure incidents can be suboptimal ^[2]. The OSHA standard explicitly requires employers to implement an Exposure Control Plan, provide PPE at no cost, and ensure the availability of the hepatitis B vaccine series to all employees with occupational exposure ^[1]. When a nurse rigorously implements standard precautions for a client with acute hepatitis B, they are directly applying these mandates. This involves practical steps: ensuring proper biohazard labeling of lab specimens, using safety-engineered sharps devices, and immediately disposing of sharps in puncture-resistant containers without recapping. The goal is to prevent the very incidents—needlesticks and mucocutaneous splashes—that are the primary vectors for HBV transmission in clinical environments . The client’s presentation of dark urine and elevated ALT confirms hepatocellular injury, but the nurse’s safety interventions must be initiated immediately upon admission, independent of these lab values, based solely on the confirmed diagnosis of a bloodborne infectious disease.