OI prophylaxis When to start, when to stoppaetc.org/wp-content/uploads/2017/06/OI_PPx_updated.pdfOI...
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OI prophylaxis When to start, when to stop
Eva Raphael, MD MPH Family and community medicine, pgy-2 University of California, San Francisco
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Learning Objectives o Recognize when to start OI prophylaxis o Identify challenges for patients when taking OI prophylaxis o Evaluate cases for stopping OI prophylaxis
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Polling question 1: I feel comfortable stopping OI prophylaxis in my patients with HIV A. Highly confident B. Somewhat confident C. Neutral D. Somewhat uncomfortable E. Not ready for that yet
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Case Presentation 48 yo Eritrean man living with HIV oDiagnosed in 2003 with a CD4 413 oWas told he did not need treatment oHas been out of care since
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Comes back into care… … Hospitalized oAdmitted March 2017 oCD4 48/9% oVL >5,000,000
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Work-up in hospital o B-Cell lymphoma (liver biopsy) o Cryptoccocemia (sCRAG 1:10) o Anemia o Thrombocytopenia o Acute Pulmonary Embolism and nodules o CMV Ab+ o Wasting Syndrome
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After 1 month… Has been discharged, is now at follow-up visit
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List of meds
o Tenofovir Alafenamide/Emtricitabine (Descovy) daily
o Dolutegravir 50 mg daily (in morning) o Darunavir/cobicistat (Prezcobix) daily o regimen was started empirically in the absence of
baseline resistance information? Or intensive ARV therapy due to high VL?
owill d/c prezcobix when VL UD
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More meds o Azithromycin 600 mg 2 tabs once/week o Dapsone 100 mg daily o Valganciclovir 450mg 2 tabs daily o Fluconazole 200mg 2 tabs daily
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And more o Ferrous gluconate one tab daily (in evening) o Docusate Sodium BID o Carvedilol 3.125 BID o Allopurinol 300mg BID o Megace suspension 20ml daily (appetite stimulant) o Zofran 4mg PRN o Tramadol 50mg PRN
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Labs since starting ARVs oMay 2017: oCD4 99/5% oVL 118
oJune 2017: oVL 168
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Polling question 2: Thoughts? A. Pill burden B. OI prophylaxis C. Prioritizing treatment D. All of the above
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OIs: Fungal disease o Candidiasis of bronchi, trachea, or lungs o Candidiasis, esophageal o Coccidioidomycosis, disseminated or
extrapulmonary o Cryptococcosis, extrapulmonary o Histoplasmosis, disseminated or extrapulmonary o Pneumocystis carinii pneumonia (PCP) (P. jiroveci)
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OIs: Bacterial disease o Mycobacterium avium complex or M. kansasii, (NTM)
disseminated (bloodstream) or extrapulmonary o Mycobacterium tuberculosis, any site (pulmonary or
extrapulmonary) o Mycobacterium, other species or unidentified
species, disseminated or extrapulmonary o Pneumonia, recurrent o Salmonella septicemia, recurrent
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OIs: Viral disease o Cytomegalovirus disease (other than liver, spleen, or nodes) o Cytomegalovirus retinitis (with loss of vision) o Herpes simplex: chronic ulcer(s) (greater than 1 month's duration) o Herpes zoster virus (HZV): Shingles o Herpes simplex virus (HHV8): Kaposi’s sarcoma o Human papilloma virus (HPV): Cervical cancer; Anal warts o Wasting syndrome due to HIV o Encephalopathy due to HIV
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OIs: Protozoal and other diseases o Cryptosporidiosis, chronic intestinal (greater than 1
month's duration) o Isosporiasis, chronic intestinal (greater than 1
month's duration) o Toxoplasmosis of brain o Progressive multifocal leukoencephalopathy
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Starting OI prophylaxis https://aidsinfo.nih.gov/guidelines/html/4/adult-and-
adolescent-oi-prevention-and-treatment-guidelines/354/primary-prophylaxis
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The basics Opportunistic Infection
Indication Preferred Treatment
PCP CD4 <200 ,Oropharyngeal candidiasis, CD4 <14%, h/o AIDS-defining illness, CD4 >200 but <250
TMP-SMX DS daily OR Dapsone 100 mg PO daily or 50 mg PO BID
Toxoplasmosis Toxoplasma IgG+ and CD4 <100 Seronegative patients on PCP PPx not active against toxo, retested for toxo if CD4 <100. Start PPx if seroconversion
TMP-SMX DS daily OR Dapsone 100 mg PO daily or 50 mg PO BID
MAC CD4 <50, after r/o disseminated MAC Azithromycin 1200 mg PO once weekly OR Clarithromycin 500 mg PO BID
Histoplasmosis CD4 ≤150 and high risk Itraconazole 200 mg PO daily Coccidioidomycosis CD4<250 and new positive IgM or IgG Fluconazole 400 mg PO daily
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Points to ponder o ”First, what this man needs to do is take HIV therapy, and I wanted
the regimen to be a simple as possible. Why clutter it with that giant Bactrim tablet?”
o “Second, assuming we can actually get him on ART, do we have any evidence whatsoever that primary prophylaxis for PCP is still necessary? All the studies of PCP prophylaxis were done way before we had effective HIV therapy — in fact, this one (for you history buffs) was done in the mid-1980s, before we had any antiretrovirals at all.”
o From John Brooks: No trial done to demonstrate difference between primary OI PPx vs none when starting ARVs. Swiss cohort tried to show this. Inicidencein the US is so low that researchers can’t get good p-value
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Polling question 3: What is your take on this A. I agree, why start OI PPx if the patient will have trouble taking all these meds B. No, I disagree, always prescribe OI PPx C. This is a case-by-case issue D. I’ve already had such discussion with patients E. C and D F. A, C, D
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Stopping OI prophylaxis US Department of Health and Human Services, AIDSInfo.
Guidelines for the Prevention and Treatment of Opportunistic Infections in HIV-Infected Adults and Adolescents. https://aidsinfo.nih.gov/guidelines/html/4/adult-and-adolescent-oi-prevention-and-treatment-guidelines/357/discontinuing-prophylaxis
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The basics (take home point: only if taking ART) Opportunistic Infection
Discontinuing 1ary PPx
Discontinuing 2ary PPx/Chronic Maintenance
PCP CD4 increased from <200 to >200 cells/µL for >3 months
Same as 1ary, (if PCP Dx when CD4>200, lifelong PPx)
Toxoplasmosis CD4 increased from <200 to >200 cells/µL for >3 months
Completed therapy, no Sx, and CD4 count >200 for >6 months
MAC CD4 >100 cells/µL for ≥3 months
Completed ≥12 months of therapy, and No Sx, and CD4 >100 for >6 mos
Histoplasmosis CD4 >150 cells/µL for 6 months
Itraconazole Tx >1yr, CD4 >150, serum Histo Ag <2 ng/ml
Coccidioidomycosis CD4 ≥250 cells/µL with VL UD If meningeal: forever If focal PNA: same as 1ary with CXR surveillance If diffuse pulmonary dz: 12 mos Tx, after discussion with ID
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Thank you
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References o Panel on Opportunistic Infections in HIV-Infected Adults and
Adolescents. Guidelines for the prevention and treatment of opportunistic infections in HIV-infected adults and adolescents: recommendations from the Centers for Disease Control and Prevention, the National Institutes of Health, and the HIV Medicine Association of the Infectious Diseases Society of America. Available at http://aidsinfo.nih.gov/contentfiles/lvguidelines/adult_oi.pdf. Accessed 6/19/17
o CDC. HIV/AIDS: Opportunistic Infections. https://www.cdc.gov/hiv/basics/livingwithhiv/opportunisticinfections.html