Fundus autofluorescence in hydroxychloroquine toxicity

Discussion in 'Trust Pharmacy Canada' started by dim-dem, 25-Feb-2020.

  1. tolstiy_begemot Well-Known Member

    Fundus autofluorescence in hydroxychloroquine toxicity


    Chloroquine is now uncommonly used in favor of its derivative hydroxychloroquine. In the United States, hydroxychloroquine is most often used for its anti-inflammatory effects in rheumatology and dermatology.

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    Fundus autofluorescence patterns in various stages of hydroxychloroquine retinopathy. Classic bull’s-eye maculopathy appearance A. As the RPE atrophies, the FAF intensity in the pericentral macula changes to a mottled, or speckled appearance B, and eventually coalesces into dark areas of absence of FAF signal once the cells have died C. The AAO published dosing and screening recommendations for chloroquine and hydroxychloroquine in 2016, revising previous recommendations published in 2011. The current maximum daily HCQ dose recommended by the AAO is 5 mg/kg of real weight. This is especially true in moderate and later stages of hydroxychloroquine maculopathy. 16 Researchers speculate as to the sensitivity of FAF in early stages of hydroxychloroquine toxicity for some patients, especially compared with spectral domain OCT and mfERG, and it is always important to check for toxic hydroxychloroquine dosing during your screening. 7

    While early toxicity may be asymtomatic, patients with more advanced stage of toxicity may complain of color vision changes or paracentral scotomas. Its toxic effects on the retina are seen in the macula.

    Fundus autofluorescence in hydroxychloroquine toxicity

    FUNDUS AUTOFLUORESCENCE FINDINGS IN EARLY CHLOROQUINE., Despite Plaquenil dosing recommendations, retinal toxicity.

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  6. Plaquenil toxicity first affects small areas of the retina between 5° and 15° from the fovea. Figures 2 and 3 show three patients at different stages of toxicity. Figure 2 bottom right shows a color display of normal mfERGs. The amplitude of the mathematically derived b-wave of the mfERG is displayed in a color scale.

    • Retina Today - Evaluating Hydroxychloroquine Toxicity With..
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    New information shows that hydroxychloroquine retinal toxicity occurs 7.5 percent of the time, which is not that rare. 3 In those patients who are affected, their daily dose and duration of use varied widely. To report an unusual fundus autofluorescence aspect in a patient with suspected hydroxychloroquine retinal toxicity. Method Case report of an unusual presentation of a patient treated for 9 consecutive years with a therapeutically recommended dose of hydroxychloroquine. Jun 06, 2015 To report an unusual fundus autofluorescence aspect in a patient with suspected hydroxychloroquine retinal toxicity. Method Case report of an unusual presentation of a patient treated for 9 consecutive years with a therapeutically recommended dose of hydroxychloroquine.

     
  7. Izzy Guest

    Plaquenil is the brand name for the prescription drug hydroxychloroquine. Breast Yeast Infection Symptoms, Causes, Treatments Ways to Prevent Yeast Infections - WebMD Plaquenil Oral Uses, Side Effects, Interactions.
     
  8. Spowen XenForo Moderator

    Plaquenil Side Effects Go Away? DailyStrength I started taking Plaquenil, and I'm supposed to be taking two 200mg pills a day, but I'm only taking one for a week to ease into it. So far I've woken up every morning very nauseous and with a lot of stomach pain and fatigue early in the day plus diarhea. I heard the side effects go away after a.

    Plaquenil Uses, Dosage & Side Effects -