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Heme Onc 7 HIV
HIV
| Question | Answer |
|---|---|
| What is the classic (but rare) EKG finding in PE? | S wave in lead 1, Q wave in lead 3, and inverted T wave in lead 3. S1Q3T3 |
| A post-op pt with significant pain presents with hyponatremia and normal volume status. Dx? | SIADH 2/2 stress of post-op pain |
| What is the tx for mild unconjugated hyperbilirubinemia? Severe unconjugated hyperbilirubinemia? | Mild: phototherapy. Severe: exchange transfusion |
| HIV + pt is seen in ER w/dyspnea. Over past few weeks, he reports incr difficulty breathing on exertion. He has a cough, fever, and you notice white plaques on the tongue and pharynx. He also admits to odynophagia. What would you expect his CD4 ct to be? | <200 (thrush and esophagitis) |
| A 39yo male HIV pt receives a head CT for HA and new-onset confusion and slurring of words. The imaging reveals a ring-enhancing lesion. What is the suspected dx? How could that dx be confirmed? | Toxoplasmosis. Toxo IgG Ab confirms dx |
| What is the rate of transmission of HIV thru a needle stick incident? What drugs should be given in case there is appreciable risk of transmission of HIV in this setting? | 0.3%. Give zidovudine and lamivudine |
| A 25yo man is dx with HIV and must begin a HAART regimen. What classes of drugs should his regimen include initially? | 2 Nucleoside Reverse Transcriptase Inhibitors (NRTI) + 1 protease inhibitor or NNRTI |
| Which antiretroviral (class) matches the following statements?: SE lactic acidosis | NRTIs |
| Which antiretroviral (class) matches the following statements?: SE GI intolerance | Protease inhib |
| Which antiretroviral (class) matches the following statements?: SE pancreatitis | Zalcitabine, stavudine, didanosine, *ritonavir* |
| Which antiretroviral (class) matches the following statements?: SE peripheral neuropathy | Zalcitabine, stavudine, didanosine |
| Which antiretroviral (class) matches the following statements?: SE megaloblastic anemia | Zidovudine |
| Which antiretroviral (class) matches the following statements?: SE rash | NNRTI |
| Which antiretroviral (class) matches the following statements?: SE hyperglycemia, DM, and lipid abnormalities | Idinavir, saquinavir, amprenavir |
| Which antiretroviral (class) matches the following statements?: SE bone marrow suppression | Zidovudine |
| Which antiretroviral (class) matches the following statements?: given to pregnant women with HIV | HAART, zidovudine during labor |
| Which antiretroviral (class) matches the following statements?: regimen for occupational HIV exposures | Zidovudine + lamivudine |
| Regarding abx prophylaxis in HIV pts, when with what, and for what organisms? | <200: bactrim or dapsone for PCP pneumonia <50: azithro or clarithromycin for MAC |
| What is AIDS defined as? | CD4 <200 or presence of an AIDS defining illness |
| What labs should be done to determine if a pt has HIV? | ELISA (2 if the first 1 is +) and Western blot. |
| When should HIV tx be started? | CD4 ct <350 or symptomatic development of opportunistic dz |
| Indicator of HIV disease progression? | Viral load |
| What should be given to HIV/AIDS pts with close contact with TB-infected persons? | Isoniazid |
| How should newborns of HIV-infected mothers be treated? | Give zidovudine for 6wk after birth. Test for presence of virus in initial 6mos of life. Note that anti-HIV Ab will always be present. Early on, viral load is prob a better measurement of dz. |
| Should HIV-infected moms breastfeed? | No |
| Which HIV drug class?: inhibit production of viral genome, prevent incorporation of viral DNA into host genome thru reverse transcriptase inhibition | NRTI |
| Which HIV drug class?: inhibit reverse transcriptase activity to prevent viral replication | NNRTI |
| Which HIV drug class?: interfere with viral replication to cause production of non-functional viruses | Protease inhibitors |
| Which HIV drug class?: combine multiple meds into same pill. Ideal to reduce confusion of dosing schedules or to increase compliance | Combination agents |
| Which HIV drug class?: binds to glycoprotein 41 to prevent fusion of HIV to CD4 cells | Fusion inhibitor |
| Which HIV drug (class)?: SE incr rate of bacterial pneumonia | Enfuvirtide (fusion inhibitor) |