One such commonly used medication for dermatologic and rheumatologic inflammatory conditions is hydroxychloroquine (Plaquenil), a chloroquine derivative. It is used to treat many diseases including malaria, rheumatoid arthritis and systemic lupus erythematosus. Hydroxychloroquine dosage for malaria prevention Chloroquine in first trimester pregnancy Can you take aleve with plaquenil Plaquenil meme And significant visual field defects consistent with hydroxychloroquine retinopathy, but without evidence of structural defects on SD-OCT or FAF may be considered for multifocal electroretinography. Screening may be commenced before five years of therapy if additional risk factors exist e.g. very high dose of drug therapy, A risk factor for Plaquenil hydroxychloroquine retinotoxicity is a daily dose that exceeds 5.0 mg of drug per kg of body weight. The tool on the right simply calculates this threshold based on a ppatient’s real body weight. It’s important to understand that the daily dose is only one risk factor for plaquenil retinotoxicity. Jan 05, 2020 Risk Factors. Hydroxychloroquine retinopathy is most influenced by daily dose and duration of use. Risk for toxicity is less with 5.0 mg/kg real weight/day for hydroxychloroquine and 2.3 mg/kg real weight/day for chloroquine. Patients are at low risk during the first 5 years of treatment. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects. Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. Plaquenil retinopathy risk factors Determine risk for hydroxychloroquine retinal toxicity., Plaquenil Risk Calculators Is there weight loss with plaquenilChloroquine malaria tablets costPlaquenil alcohol liverRheumatoid arthritis guidelines hydroxychloroquine Melles R, Marmor M. The risk of toxic retinopathy in patients on long-term hydroxychloroquine therapy. JAMA Ophthalmol. 2014;132121453-60. 6. Michaelides M, Niam H, Stover P, et al. Retinal toxicity associated with hydroxychloroquine and chloroquine risk factors, screening, and progression despite cessation of therapy. How to Succeed in Plaquenil Screenings. Hydroxychloroquine toxicity - EyeWiki. Despite Plaquenil dosing recommendations, retinal toxicity.. In addition, toxic maculopathy has been reported to be dose dependent, whereby retinal toxicity risk increases with more than 6.5mg/kg of body weight. 6. Other risk factors include advanced age and pre-existing retinal disease. Patients with any of the aforementioned findings are considered “high risk” and should be monitored closely. Aug 29, 2014 Several risk factors may increase the likelihood of retinal toxicity from Plaquenil such as, age of greater than 60 years, daily dose more than 6.5 mg/kg; use of the drug more than 5 years, obesity, preexisting retinal disease and, renal or liver failure. Risk factors that increase the chance of hydroxychloroquine retinopathy include daily dosage, cumulative dose, renal or liver disease, age, and previous retinal disease 9. A daily dose of 6.5mg/kg ideal body weight places patients at higher risk, but a daily dose below this level did not preclude the patient from developing toxicity after many years of treatment.