Atypical presentation of COVID-19 in older patients is associated with frailty but not with adverse outcomes.

Purpose: Older patients with COVID-19 can present with atypical complaints, such as falls or delirium. In other diseases, such an atypical presentation is associated with worse clinical outcomes. However, it is not known whether this extends to COVID-19.

Delirium in older COVID-19 patients: Evaluating risk factors and outcomes.

Objectives: A high incidence of delirium has been reported in older patients with Coronavirus disease 2019 (COVID-19). We aimed to identify determinants of delirium, including the Clinical Frailty Scale, in hospitalized older patients with COVID-19. Furthermore, we aimed to study the association of delirium independent of frailty with in-hospital outcomes in older COVID-19 patients.

Characteristics and outcomes of older patients hospitalised for COVID-19 in the first and second wave of the pandemic in The Netherlands: the COVID-OLD study.

Background: as the coronavirus disease of 2019 (COVID-19) pandemic progressed diagnostics and treatment changed.

Objective: to investigate differences in characteristics, disease presentation and outcomes of older hospitalised COVID-19 patients between the first and second pandemic wave in The Netherlands.

Methods: this was a multicentre retrospective cohort study in 16 hospitals in The Netherlands including patients aged ≥ 70 years, hospitalised for COVID-19 in Spring 2020 (first wave) and Autumn 2020 (second wave).

Early hydroxychloroquine but not chloroquine use reduces ICU admission in COVID-19 patients.

Background: The global push for the use of hydroxychloroquine (HCQ) and chloroquine (CQ) against COVID-19 has resulted in an ongoing discussion about the effectivity and toxicity of these drugs. Recent studies report no effect of (H)CQ on 28-day mortality. We investigated the effect of HCQ and CQ in hospitalized patients on the non-ICU COVID-ward.

Weather field reconstruction using aircraft surveillance data and a novel meteo-particle model.

Wind and temperature data are important parameters in aircraft performance studies. The lack of accurate measurements of these parameters forces researchers to rely on numerical weather prediction models, which are often filtered for a larger area with decreased local accuracy. Aircraft, however, also transmit information related to weather conditions, in response to interrogation by air traffic controller surveillance radars.

Clopidogrel-associated acute generalized exanthematous pustulosis.

Acute generalized exanthematous pustulosis (AGEP) is a skin eruption of rapid onset and progression that is characterized by the formation of numerous sterile pustules on an erythematous background. Other features may include fever and leukocytosis, with resolution usually in less than 15 days. We present an 83-year-old woman with an erythematous pustular eruption following placement of a bare metal coronary stent and initiation of anticoagulation with clopidogrel.