Post Exposure Prophylaxis

(Needle-stick, bites etc.)



Approach


Immediate wound care

Sharp Injury:

  • Encourage wound to bleed
  • Do not suck the puncture wound
  • Wash thoroughly (soap & running water) then disinfect with alcohol ± Betadine
  • Document neurovascular status
  • Check tetanus status

Bites and scratches:

  • Encourage area to bleed & wash with soap & cold water
  • Do not use a nail-brush. The wound should be covered

Splashes

  • Wash with soap and cold water. Contaminated clothing should be removed
  • Eyes: Wash eyes with cold tap water
  • Mouth: Rinse thoroughly with cold water

For bites, as above plus wound care incl.

  • Thorough wound cleaning as soon as possible
  • Wound closure only for large defects (cosmesis) - may require general anaesthesia
  • Antibiotics - (Co-amoxiclav or clarithromycin) for 1 to 3 days. Add metronidazole in severe injury
  • Consider x-ray for tooth fragments
  • Complete body fluid exposure forms as for needle stick injury

Triage/Initial Management

This protocol should be used to assess the need for a HIV-PEP starter-pack (held in ED resusc.) which should be dispensed and administered to patient if warranted.

CUH:

  • Please refer for PEP follow up via iCM

Elsewhere:

  • Please send a referral letter to the ID secretary via FAX (021 4921343)
  • A yellow prescription should be written and sent to pharmacy via internal post

Initial Mx


Assessment for HIV post occupational/non occupational exposure

Step 1 - Assess risk of exposure

Step 2: Assess risk of source

Nightclub needlestick

In 2021 several patients presented following needle stick injuries in bars/nightclubs. These are very low risk patients and, in general (source unknown), should not be considered for PEP but require usual hepatitis management.

Decision table for HIV PEP

Decision table for HIV PEP
PEP for HIV
Exposures
Known HIV+ source Unknown source status
High risk exposure Emtricitabine/Tenofovir +
Raltegravir*
Consider PEP
Moderate risk exposure Emtricitabine/Tenofovir +
Raltegravir*
Consider PEP

Don't forget!

  • Take baseline bloods: FBC, U&E, LFTs, HIV screen, Hep C Ab, Hep B sAg, cAb and sAb
  • Administer tetanus toxoid if indicated
  • Consider Hep B PEP or emergency contraception
  • Advise against unprotected sexual intercourse until specialist assessment
  • Organise follow up before the patient leaves the ED. In CUH this is via an iCM referral

* In the case of a known HIV-positive source, the case should be discussed with the ID SpR or consultant.


Assessment for HIV PEP following sexual exposure

Only for patients presenting within 72hrs of exposure)

Step 1 : assess risk of exposure

Exposure risk after sex
  Source known HIV positive HIV status unknown,
Source high risk for HIV+
HIV status unknown
Source low risk for HIV
Exposure Viral load detectable Viral load undetectable
Receptive anal sex Recommended Recommended Recommended Considered
Insertive anal sex Recommended Not recommended Considered Not recommended
Receptive vaginal sex Recommended Not recommended Considered Not recommended
Insertive vaginal sex Recommended Not recommended Considered Not recommended
Fellatio sex with ejaculation Consider Not recommended Not recommended Not recommended
Fellatio without ejaculation Not recommended Not recommended Not recommended Not recommended
Cunnilingus Not Recommended Not Recommended Not recommended Not recommended
Sharing of injecting equipment Recommended Not recommended Consider Not recommended
Human bites Consider in very limited circumstances Not recommended Not recommended Not recommended
Needlestick from discarded needle in community     Consider in very limited circumstances (above) Not recommended
Needlestick direct from source Recommended Not recommended Consider Not recommended
Semen/Blood splash to non-intact skin, eye or mouth Considered Not recommended Not recommended Not recommended
Decision table for HIV PEPSE
PEP for HIV Sexual exposures Management
Red box exposure Emtricitabine/Tenofovir + Raltegravir
Yellow box exposure Consider PEP

Don't forget

  • Take baseline bloods: FBC, U&E, LFTs, HIV screen, Hep C Ab, Hep B sAg, cAb and sAb
  • Consider if Hepatitis B PEP or emergency contraception is indicated
  • Administer tetanus toxoid if indicated
  • Organise follow up before the patient leaves the department (In CUH, via iCM)

Potential hepatitis B exposure

PEP for Hepatitis B virus

  • The vaccine is relatively safe, including in pregnancy – it is unnecessary if the patient has been adequately vaccinated
  • Hepatitis B Immunoglobulin (Hepatect) is produced from blood donors, and treated to inactivate virus present. There is a risk of contamination e.g. other unknown viruses, CJD etc
  • Hepatitis B Immunoglobulin should only be prescribed when the source is known to be HepB sAg positive
  • The prevalence of Hepatitis B in Ireland is too low to warrant giving Hepatitis B Immunoglobulin to patients where the source is unknown

Hepatitis B virus prescribing details

Hepatitis vaccine

Engerix B 1mL IM (deltoid) or B Vax IM (deltoid).
Will need x2 further injections to complete the course (GP).

Hep B Immunoglobulin (HBIG)

Hepacect CP (0.16-0.20 mL/Kg)
Infuse at reate of 0.1 mL/kg/hr.

Hepatect CP SPC.

HPSC - Hepatect preparation.

In CUH

Hep B HBIG is sourced from Blood Bank @22537.

Hep B vaccines are located in Clean utility fridge ED (or Pharmacy Dept if stock depleated in ED).


CUH ED Discharge/follow up for patients for PEP or PEPSE

If you examine/review a patient and decide that a PEP pack is required, you must:

  • Complete a referral on iCM to the HIV clinic. This will ensure the patient is reviewed by ID and will facilitate the supply of a further 3 weeks of medicines if they are required
  • For staff members or following occupational injury, follow-up should be organised with Occupational Health
  • Please write a prescription and leave in the Resusc DDA press when you are taking the 7 day pack
  • Do not give a prescription to the patient (they cannot access these meds. in the community)
  • Print/provide an Information leaflet

Appendices

Estimated Risk of HIV Transmission per Exposure from Source Known to be HIV Positive
Type of exposure Estimated risk per exposure
Blood transfusion 1 in 1
IVDU sharing needles 1 in 150
Occupational needles-tick
(known HIV pos+ve patient)
1 in 300
Mucous membrane exposure 1 in 1,000
Receptive anal sex Up to 1 in 30
Insertive anal sex Up to 1 in 1,000
Receptive oral sex Up to 1 in 2,500
Insertive vaginal sex Up to 1 in 1,000
Receptive vaginal sex Up to 1 in 500


Content by Dr Íomhar O' Sullivan. Last review Dr Matthew Blair, ÍOS 18/04/24.