A New HBsAg-Positive Patient, a Shared Station, and a Needlestick

Today's treatment:

• Dialyze the patient in the isolation room with the dedicated machine. Do not use a shared station.
• Assign dedicated staff where possible, and do not have the same nurse care for this patient and for susceptible patients in the same shift without changing gloves and following hand hygiene.
• Use dedicated supplies and equipment in the room when feasible.

Station 7:

• Perform terminal disinfection of the station and machine per unit protocol before another patient uses it.
• Review what was shared: blood pressure cuff, tourniquet, scissors, and any multidose vials.

Cohorting rationale:

• HBsAg-positive patients may share a room and machine with other HBsAg-positive patients, but not with susceptible or uninfected patients.
• Vaccination history without a documented titer does not prove protection. The patient's own vaccination status is irrelevant to protecting others.
• The adjacent patient's titer of 8 mIU/mL is below the protective threshold, so that patient is susceptible and should not be exposed.

Communication: notify the medical director and infection prevention, and document the placement decision.

Needlestick (source HBsAg positive, nurse vaccinated but titer unknown):

• Wash the site; report immediately per protocol.
• Test the nurse's anti-HBs titer.
• If the titer is below 10 mIU/mL or unknown and the nurse is a nonresponder, give hepatitis B immune globulin and start revaccination; the exact regimen is per protocol and physician direction.
• Document the exposure, source, and follow-up plan. Do not rely on the childhood vaccination history alone.

Adjacent patient with HBsAb 8 mIU/mL:

• This is below the protective level; treat the patient as susceptible.
• There was no reported exposure event, but the patient shared a nearby station. Review whether any shared items or blood contamination occurred.
• Check the vaccination record and offer revaccination or a booster per protocol, then recheck the titer.

Surveillance:

• Check whether other patients were exposed and review their titers.
• Report the exposure and the new HBsAg case through the appropriate channels.

Reasoning: the actions differ because one is a documented percutaneous exposure and the other is a susceptible patient with possible environmental exposure.

Surveillance:

• Continue monthly HBsAg screening for all patients, and track results so a new positive is recognized immediately.
• Maintain a vaccine and titer registry; identify nonresponders and patients with unknown status.
• Review infection logs for patterns and audit isolation practices.

Education:

• Reinforce hand hygiene and glove use.
• Ban recapping of needles; use a needle-safe device or a one-handed technique, and place sharps containers within reach.
• Train staff on separation of clean and contaminated supplies and on not sharing items between stations.
• Educate patients about vaccination and about reporting symptoms.

System changes:

• Make isolation placement part of the routine new-positive workflow.
• Ensure the isolation room and dedicated machine are ready and labeled.
• Review the needlestick and adjust staffing or equipment if the cause was a process failure.

Reasoning: the case shows three separate gaps - station assignment, vaccine-titer tracking, and sharps handling - so the response should address all three rather than only the individual patient.