A discussion on the clinical evaluation and management of an HIV positive surgical patient. Also gives insight on the problems of the HIV patient and management of needle stick injury.
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Approach to an HIV positive surgical patient
1. APPROACH TO AN HIV POSITIVE
SURGICAL PATIENT
Dr Itaman, Usifoh
Surgery Registrar
Presented 0n 17/12/2019 to the Urology Unit,
Department of Surgery, ISTH, as part of the requirements
for the Part 1 Post-graduate Training Programme in Surgery
2. OUTLINE
• INTRODUCTION
• EPIDEMIOLOGY
• MICROBIOLOGY
• PATHOGENESIS
• CLINICAL PRESENTATION
• PROBLEMS OF HIV PATIENT
• PERIOPERATIVE MGT
PREOP
INTRAOP
POST OP
• MGT OF AN EXPOSURED HCP
• ANTIRETROVIRAL THERAPY
• FUTURE TRENDS
• CONCLUSION
3. INTRODUCTION
• HIV infection is a common cause of morbidity
and mortality. This is particularly true for the
developing world where it is a leading cause of
death.
• HIV in patients now run a chronic course due to
availability of effective treatment. As such they
will develop and present with surgical problems
that will require treatments
• Such Surgical treatments will be for problems
both related and unrelated to HIV infection
4. EPIDEMIOLOGY
• First report of HIV/AIDS was in 1981. The virus
was discovered in 1983.
• Over 40million people living with HIV globally.
• 90% of cases are in Subsaharan Africa.
• About 3million PLWHA in Nigeria.
• 20 to 25% of HIV positive patients will require
surgery in their lifetime.
• Almost half (41.5%) of the surgeons had operated
on a known HIV/AIDS infected individuals
5. RISK FACTORS
• HOMOSEXUALS
• UNPROTECTED HETEROSEXUAL EXPOSURE
• UNSAFE BLOOD TRANSFUSION
• INTRAVENOUS DRUG ABUSE
• LIVING IN ENDEMIC AREAS
• HEALTH CARE WORKERS
6. MODES OF TRANSMISSION
• SEXUAL
• BODY FLUIDS
Blood and blood products, semen, vaginal
secretions, milk, CSF, peritoneal, pleural, pericardial
and synovial fluids.
• PERINATAL TRANSMISSION
NB: TEARS, SWEAT, URINE, FECES, SALIVA ARE NOT
CONSIDERED MEDIA FOR TRANSMISSION UNLESS
BLOOD STAINED
7. MICROBIOLOGY
• HIV is a retrovirus of the Lenti-virus family
• The viral particle consist of a core of 2 single
stranded RNA, reverse transcriptase enzyme,
core proteins and an envelope containing
glycoproteins (gp120 and 41).
15. INDICATIONS FOR SURGERY IN THE HIV
INFECTED PATIENT
• FOR DIAGNOSIS OF HIV RELATED INFECTION
AND NEOPLASM
• THERAPEUTIC FOR SURGICAL COMPLICATIONS
OF AIDS
• FOR OTHER INDICATIONS AS IN GENERAL
POPULATION.
17. PRE OP
HISTORY:
• DURATION OF DISEASE
• RISK FACTORS
• FEATURES OF OPPORTUNISTIC INFECTONS
• TREATMENTS/SIDE EFFECTS
• CO MORBIDITIES
• LATEST CD4 COUNT/VIRAL LOAD
18. PRE OP: EXAMINATION
• GENERAL STATE OF THE PATIENT
• NUTRITIONAL STATUS
• VITAL SIGNS
• SYSTEMIC EXAMINATION IN SEARCH OF
OPPORTUNISTIC INFECTIONS, NEOPLASM
AND CO MORBIDITIES
19. PRE OP: INVESTIGATIONS
• CD4 COUNT
• VIRAL LOAD
• FBC
• EUCR
• URINALYSIS
• LFT
• CXR
• ECG, ECHO (ESP IF GREATER THAN 45%)
• IMAGING AS RELEVANT
20. CD4 COUNT AND VIRAL LOAD
• CD4 counts determine staging of HIV disease
and need for treatment
• Viral Loads determine effectiveness of ARV
treatment.
• Higher complication rates are seen if CD4
<200cell/mm³ and post operative viral load >
10000 copies/ml.
22. INTRA OP
• All staff must be made aware of patient’s status
• ANAESTHESIA
Regional preferred to GA.
Dedicated circuits.
Potential for drug-drug interaction
• PROPHYLATIC ANTIBIOTICS
23. INTRA-OP
PREVENT HCP EXPOSURE
• Proper barrier protective devices (disposable
Scrubs, aprons, gowns, goggles, face mask,
impervious boots, gloves)
• Prevention of needle-stick injuries
-Experienced surgeon and assistant
-Double glove
-Minimal access surgeries preferred
-Diathermy preferred to scalpels
-Slow and careful techniques
-Avoid handling needles/blades
-Cutting needles from sutures before tying a knot
-Use of staplers
26. POST OP
• WOUND CARE
• REMOVAL OF SUTURES
• ANTIBIOTICS
• ANTIRETROVIRAL AGENTS
• PROPHYLAXIS AGAINST OPPORTUNISTIC
INFECTION
• PREVENTION OF HCP EXPOSURE
• FOLLOW UP
27. PREDICTORS OF OPERATIVE OUTCOME
• ANAESTHESIST RISK CLASS.
• CD4 <200CELL/MM³ (INFECTION RISK)
• POST-OP CD4 COUNT.
• PRE TO POST-OP CHANGE IN CD4.
• Becker et al: reported successful surgical
outcome rate of 79% (range: 68%-90%) without
any significant increase of mortality or morbidity
in HIV infection
30. HEALTHCARE PRACTICIONER (HCP) EXPOSURE
• DEFINED AS CONTACT WITH BLOOD AND OTHER
FLUIDS/TISSUES OF AN HIV POSITIVE PATIENT IN
MANNERS THAT CREATES A RISK FOR
TRANSMISSION.
• EXPOSURE RATES 2-6%
• RISKS:
Endemic areas, surgery longer than 3hrs, blood
loss > 300ml, pelvic surgeries.
31. • TYPES OF EXPOSURE:
Needle stick injury
Mucosal
Cutaneous
• RISK FOR TRANSMISSION 0.03% - 0.3%
Depends on:
• Type of needle (Hollow/Large bore needle)
• Depth of injury
• Quantity of blood
• Disease status of source patient
• Host defenses
• Post-exposure prophylaxis
32. MGT OF AN EXPOSURED HCP
• TREATMENT OF EXPOSED LOCAL SITE:
SKIN: allow to bleed freely, wash with soap
and running water for 30mins.
EYES: irrigate with fresh water
ORAL CAVITY: spit out immediately. Rinse
mouth.
• PROMPT EXPOSURE REPORTING.
33. • PROMPT RISK ASSESSMENT:
o SOURCE:
HIV testing after obtaining consent.
If known to be positive, assess health status and
possibility of drug resistance.
o RECIPIENT:
Baseline serological testing for HIV, HBV, HCV
o NATURE OF EXPOSURE
34. POST EXPOSURE PROPHYLAXIS
• USE OF ARVs TO PREVENT INFECTION
FOLLOWING EXPOSURE.
• Decision to start PEP depends on:
Severity of exposure and HIV status of the
patient
• Best commenced 1-2hrs after exposure. Less
efficacy after 72hrs.
• Duration of 4weeks
• Not 100% guarantee, risk must be balanced with
toxicity
37. • TESTING done at 6wk, 12wk and 6month
• Follow up every 1-2 wk for side effects
• Advise:
Have safe sex (use barrier methods),
Do not donate blood or organs.
38.
39. LOCAL CHALLENGES
• LACK OF DATA
• NON AVAILABILITY OF NEWER DRUGS
• LACK OF LAID DOWN PROCTOCOL FOR
MANAGING EXPOSURES.
• SOCIAL STIGMATISATION OF PLWHA
• IGNORANCE
41. CONCLUSION
• Doctors are bound by ethics of duty to
manage all patients, including PLWHA.
• Availability of effective treatment for HIV
means that surgeons will operative on more
persons living with HIV/AIDS.
• The surgeon must therefore be abreast of the
principles of mgt and the prevention of
exposure transmission.
• PREVENTION IS BETTER THAN CURE.
42. REFERENCES
1. Smit S. Guidelines for surgery in the HIV patient. CME J.2010;
28(8):356-8.
2. Irowa O.OHIVJAIDS, Surgical Complications and Challenges,
The Nigerian Experience. Benin Journal of Postgraduate
Medicine. 2007:9(1:55-572 Centers for Disease Control.
Morbidity and Mortality Weekly Report.
3. Kosmidis C, AnthimidisG, Vasiliadou. Acute abdomen and
HIV infection. https://cdn.intechopen.com/pdfs-
wm/23598.pdf219