Objectives Aim of our study was to describe the incidence and predictive factors of secondary infections in patients with COVID-19. Methods Cohort study on patients hospitalized with COVID-19 at IRCCS San Raffaele Hospital between February 25 th and April 6th, 2020 (NCT04318366). We considered secondary bloodstream (BSIs) or possible lower respiratory tract infections (pLRTIs) occurred after 48 hours since hospital admission until death or discharge. We calculated multivariable Fine-Gray models, to assess factors associated with risk of secondary infections. Results Among 731 patients, a secondary infection was diagnosed in 68 patients (9.3%): 58/731 patients (7.9%) had at least one BSI and 22/731 patients (3.0%) at least one pLRTI. Overall 28-day cumulative incidence was 16.4% (95% CI 12.4% - 21.0%). The majority of BSIs was due to gram-positive pathogens (76/106 isolates, 71.7%), specifically coagulase-negative staphylococci (53/76, 69.7%), while among gram-negatives (23/106, 21.7%) Acinetobacter baumanii (7/23, 30.4%) and Escherichia coli (5/23, 21.7%) predominated. pLRTIs were mainly caused by gram-negative pathogens (14/26, 53.8%). Eleven patients were diagnosed with putative invasive aspergillosis. At multivariable analysis, factors associated with secondary infections were low baseline lymphocyte count ( < 0.7 vs >0.7 per 10 9 /L: subdistribution hazard ratios (sdHRs) 1.93 [95% CI 1.11-3.35]), baseline PaO 2 /FiO 2 (per 100-points lower: sdHRs 1.56 [95% CI 1.21-2.04]), and intensive-care unit (ICU) admission in the first 48 hours (sdHR 2.51 [95% CI 1.04-6.05]). Conclusions Patients hospitalized with COVID-19 had a high incidence of secondary infections. At multivariable analysis, early need for ICU, respiratory failure, and severe lymphopenia, were identified as risk factors for secondary infections.
Data on residual clinical damage after Coronavirus disease-2019 (COVID-19) are lacking. The aims of this study were to investigate whether COVID-19 leaves behind residual dysfunction, and identify patients who might benefit from post-discharge monitoring. All patients aged �18 years admitted to the Emergency Department (ED) for COVID-19, and evaluated at post-discharge follow-up between 7 April and 7 May, 2020, were enrolled. Primary outcome was need of follow-up, defined as the presence at follow-up of at least one among: respiratory rate (RR) >20 breaths/min, uncontrolled blood pressure (BP) requiring therapeutic change, moderate to very severe dyspnoea, malnutrition, or new-onset cognitive impairment, according to validated scores. Post-traumatic stress disorder (PTSD) served as secondary outcome. 185 patients were included. Median [interquartile range] time from hospital discharge to follow-up was 23 [20-29] days. 109 (58.9%) patients needed follow-up. At follow-up evaluation, 58 (31.3%) patients were dyspnoeic, 41 (22.2%) tachypnoeic, 10 (5.4%) malnourished, 106 (57.3%) at risk for malnutrition. Forty (21.6%) patients had uncontrolled BP requiring therapeutic change, and 47 (25.4%) new-onset cognitive impairment. PTSD was observed in 41 (22.2%) patients. At regression tree analysis, the ratio of arterial oxygen partial pressure to fractional inspired oxygen (PaO 2 /FiO 2) and body mass index (BMI) at ED presentation, and age emerged as independent predictors of the need of followup. Patients with PaO 2 /FiO 2 <324 and BMI �33 Kg/m 2 had the highest odds to require follow-up. Among hospitalised patients, age �63 years, or age <63 plus non-invasive ventilation or diabetes identified those with the highest probability to need follow-up. PTSD was independently predicted by female gender and hospitalisation, the latter being protective (odds ratio, OR, 4.03, 95% confidence interval, CI, 1.76 to 9.47, p 0.0011; OR 0.37, 95% CI
It would seem from these findings that the risk of pregnancy failure in APS women planning to conceive can be stratified on the basis of some specific clinical and laboratory features.
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