Different dosage regimens of hydroxychloroquine are used to manage COVID-19 patients, without information on the pharmacokinetics in this population.Blood samples (n=101) were collected from 57 COVID-19 patients for 7 days and concentrations were compared with simulated kinetic profiles.Hydroxychloroquine exposure is low and cannot be predicted by other populations.

Objectives Fecal microbiota transplantation (FMT) is an innovative therapy indicated for the treatment of recurrent Clostridioides difficile infections. Although CDI and its complications are more common in very old patients (≥80 years) due to their comorbidities, frailty and senescence of the immune system, limited data are available for this older patient population. Design This was a single-center, real-life cohort study with retrospective outcome data registration, conducted at Toulouse, France. Setting and Participants Older people group was compared to the control group aged 18–79 years. Measurements The primary outcome was overall survival at 52 weeks for ≥80 years patients compared to the control group after FMT. Recurrence-free survival at 52 weeks and, the occurrence of adverse events in the short and long term were the secondary endpoints. Results A total of 58 patients were included, 19 were aged ≥80 years and 39 were aged 18–79 years. Overall survival at 52 weeks after FMT of the very old patients was not different from the control group (78.9% versus 89.7%, p= 0.29). Recurrence-free survival of CDI was not different between groups, with 94.3% in the 18–79-group versus 86.9% in the ≥80 group (p=0.44). The occurrence of short- or long-term adverse events was not statistically different between the two groups (36.8% vs 41%, p=0.45). Conclusions FMT is effective and well-tolerated in very old frail patients. This treatment brings a rapid benefit and limits the loss of functions. It also favors their maintenance at home or in a non-medical institution dedicated to dependent subjects and improves their quality of life.

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