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1.
BMC Anesthesiol ; 22(1): 310, 2022 10 03.
Article in English | MEDLINE | ID: covidwho-2053859

ABSTRACT

BACKGROUND: During the COVID-19 first wave in France, the capacity of intensive care unit (ICU) beds almost doubled, mainly because of the opening of temporary ICUs with staff and equipment from anaesthesia. OBJECTIVES: We aim to investigate if the initial management in temporary ICU is associated with a change in ICU mortality and short-term prognosis. DESIGN: Retrospective single-centre cohort study. SETTING: Surgical ICU of the Bichat Claude Bernard University Hospital during the COVID-19 "first wave" (from 18 March to 10 April 2020). PATIENTS: All consecutive patients older than 18 years of age with laboratory-confirmed SARS-CoV-2 infection and/or typical radiological patterns were included during their first stay in the ICU for COVID-19. INTERVENTION: Patients were admitted to a temporary ICU if no room was available in the classical ICU and if they needed invasive mechanical ventilation but no renal replacement therapy or Extracorporeal Membrane Oxygenation (ECMO) in the short term. The temporary ICUs were managed by mixed teams (from the ICU and anaesthesiology departments) following a common protocol and staff meetings. MAIN OUTCOME MEASURE: ICU mortality RESULTS: Among the 59 patients admitted, 37 (62.7%) patients had initial management in the temporary ICU. They had the same characteristics on admission and the same medical management as patients admitted to the classical ICU. ICU mortality was similar in the 2 groups (32.4% in temporary ICUs versus 40.9% in classical ICUs; p=0.58). SAPS-II and ECMO use were associated with mortality in multivariate analysis but not admission to the temporary ICU. CONCLUSION: In an overload context of the ICU of a geographical area, our temporary ICU model allowed access to intensive care for all patients requiring it without endangering them.


Subject(s)
COVID-19 , Cohort Studies , Humans , Intensive Care Units , Pandemics , Retrospective Studies , SARS-CoV-2
2.
Sci Rep ; 12(1): 638, 2022 01 12.
Article in English | MEDLINE | ID: covidwho-1900549

ABSTRACT

COVID-19 can cause acute respiratory distress syndrome, leading to death in many individuals. Evidence of a deleterious role of the innate immune system is accumulating, but the precise mechanisms involved remain unclear. In this study, we investigated the links between circulating innate phagocytes and severity in COVID-19 patients. We performed in-depth phenotyping of neutrophil and monocyte subpopulations and measured soluble activation markers in plasma. Additionally, anti-microbial functions (phagocytosis, oxidative burst, and NETosis) were evaluated on fresh cells from patients. Neutrophils and monocytes had a strikingly disturbed phenotype, and elevated concentrations of activation markers (calprotectin, myeloperoxidase, and neutrophil extracellular traps) were measured in plasma. Critical patients had increased CD13low immature neutrophils, LOX-1 + and CCR5 + immunosuppressive neutrophils, and HLA-DRlow downregulated monocytes. Markers of immature and immunosuppressive neutrophils were strongly associated with severity. Moreover, neutrophils and monocytes of critical patients had impaired antimicrobial functions, which correlated with organ dysfunction, severe infections, and mortality. Together, our results strongly argue in favor of a pivotal role of innate immunity in COVID-19 severe infections and pleads for targeted therapeutic options.


Subject(s)
COVID-19/immunology , Immunity, Innate , Immunocompromised Host , Adult , Aged , Female , Humans , Male , Middle Aged , Monocytes/immunology , Neutrophils/immunology , Phagocytes/immunology , Prognosis , Severity of Illness Index , Young Adult
3.
Biomedicines ; 10(4)2022 Mar 23.
Article in English | MEDLINE | ID: covidwho-1834700

ABSTRACT

High-density lipoproteins (HDLs) have multiple endothelioprotective properties. During SARS-CoV-2 infection, HDL-cholesterol (HDL-C) concentration is markedly reduced, and studies have described severe impairment of the functionality of HDL particles. Here, we report a multi-omic investigation of the first administration of recombinant HDL (rHDL) particles in a severe COVID-19 patient in an intensive care unit. Plasma ApoA1 increased and HDL-C decreased after each recombinant HDL injection, suggesting that these particles were functional in terms of reverse cholesterol transport. The proportion of large HDL particles also increased after injection of recombinant HDL. Shotgun proteomics performed on HDLs isolated by ultracentrifugation indicated that ApoA1 was more abundant after injections whereas most of the pro-inflammatory proteins identified were less abundant. Assessment of Serum amyloid A-1, inflammatory markers, and cytokines showed a significant decrease for most of them during recombinant HDL infusion. Our results suggest that recombinant HDL infusion is feasible and a potential therapeutic strategy to be explored in COVID-19 patients.

4.
Biomedicines ; 10(4):754, 2022.
Article in English | MDPI | ID: covidwho-1762667

ABSTRACT

High-density lipoproteins (HDLs) have multiple endothelioprotective properties. During SARS-CoV-2 infection, HDL-cholesterol (HDL-C) concentration is markedly reduced, and studies have described severe impairment of the functionality of HDL particles. Here, we report a multi-omic investigation of the first administration of recombinant HDL (rHDL) particles in a severe COVID-19 patient in an intensive care unit. Plasma ApoA1 increased and HDL-C decreased after each recombinant HDL injection, suggesting that these particles were functional in terms of reverse cholesterol transport. The proportion of large HDL particles also increased after injection of recombinant HDL. Shotgun proteomics performed on HDLs isolated by ultracentrifugation indicated that ApoA1 was more abundant after injections whereas most of the pro-inflammatory proteins identified were less abundant. Assessment of Serum amyloid A-1, inflammatory markers, and cytokines showed a significant decrease for most of them during recombinant HDL infusion. Our results suggest that recombinant HDL infusion is feasible and a potential therapeutic strategy to be explored in COVID-19 patients.

5.
Vieillard-Baron, Antoine, Flicoteaux, Rémi, Salmona, Maud, Annane, Djillali, Ayed, Soufia, Azoulay, Elie, Bellaiche, Raphael, Beloucif, Sadek, Berti, Enora, Bertier, Astrid, Besset, Sébastien, Bret, Marlène, Cariou, Alain, Carpentier, Christophe, Chaouch, Oussama, Chariot, Appoline, Charron, Cyril, Charpentier, Julien, Cheurfa, Cherifa, Cholley, Bernard, Clerc, Sébastien, Combes, Alain, Chousterman, Benjamin, Cohen, Yves, Constantin, Jean-Michel, Damoisel, Charles, Darmon, Michael, Degos, Vincent, D’Ableiges, Bertrand De Maupeou, Demeret, Sophie, Montmollin, Etienne De, Demoule, Alexandre, Depret, Francois, Diehl, Jean-Luc, Djibré, Michel, Do, Chung-Hi, Dudoignon, Emmanuel, Duranteau, Jacques, Fartoukh, Muriel, Fieux, Fabienne, Gayat, Etienne, Gennequin, Mael, Guidet, Bertrand, Gutton, Christophe, Hamada, Sophie, Heming, Nicholas, Jouffroy, Romain, Keita-Meyer, Hawa, Langeron, Olivier, Lortat-Jacob, Brice, Marey, Jonathan, Mebazaa, Alexandre, Megarbane, Bruno, Mekontso-Dessap, Armand, Mira, Jean-Paul, Molle, Julie, Mongardon, Nicolas, Montravers, Philippe, Morelot-Panzini, Capucine, Nemlaghi, Safaa, Nguyen, Bao-long, Parrot, Antoine, Pasqualotto, Romain, Peron, Nicolas, Picard, Lucile, de Chambrun, Marc Pineton, Planquette, Benjamin, Plaud, Benoit, Pons, Stéphanie, Quesnel, Christophe, Raphalen, Jean-Herlé, Razazi, Keyvan, Ricard, Jean-Damien, Roche, Anne, Rohaut, Benjamin, Roux, Damien, Savale, Laurent, Sobotka, Jennifer, Teboul, Jean-Louis, Timsit, Jean-François, Voiriot, Guillaume, Weiss, Emmanuel, Wildenberg, Lucille, Zogheib, Elie, Riou, Bruno, Batteux, Frédéric.
EuropePMC;
Preprint in English | EuropePMC | ID: ppcovidwho-327150

ABSTRACT

Importance Information about the severity of Omicron is scarce. Objective To report the respective risk of ICU admission in patients hospitalized with Delta and Omicron variants and to compare the characteristics and disease severity of critically ill patients infected with both variants according to vaccination status. Design Analysis from the APHP database, called Reality, prospectively recording the following information in consecutive patients admitted in the ICU for COVID-19: age, sex, immunosuppression, vaccination, pneumonia, need for invasive mechanical ventilation, time between symptom onset and ICU admission, and in-ICU mortality. Retrospective analysis on an administrative database, “Système d’Information pour le Suivi des Victimes” (SI-VIC), which lists hospitalized COVID-19 patients. Setting 39 hospitals in the Paris area from APHP group. Participants Patients hospitalized from December 1, 2021 to January 18, 2022 for COVID-19. Main outcomes and measures Risk of ICU admission was evaluated in 3761 patients and Omicron cases were compared to Delta cases in the ICU in 888 consecutive patients. Results On January 18, 45% of patients in the ICU and 63.8% of patients in conventional hospital units were infected with the Omicron variant (p < 0.001). The risk of ICU admission with Omicron was reduced by 64% than with Delta (9.3% versus 25.8% of cases, respectively, p < 0.001). In critically ill patients, 400 had the Delta variant, 229 the Omicron variant, 98 had an uninformative variant screening test and 161 did not have information on variant screening test. 747 patients (84.1%) were admitted for pneumonia. Compared to patients infected with Delta, Omicron patients were more vaccinated (p<0.001), even with 3 doses, more immunocompromised (p<0.001), less admitted for pneumonia (p<0.001), especially when vaccinated (62.1% in vaccinated versus 80.7% in unvaccinated, p<0.001), and less invasively ventilated (p=0.02). Similar results were found in the subgroup of pneumonia but Omicron cases were older. Unadjusted in-ICU mortality did not differ between Omicron and Delta cases, neither in the overall population (20.0% versus 27.9%, p = 0.08), nor in patients with pneumonia (31.6% versus 29.7%, respectively) where adjusted in-ICU mortality did not differ according to the variant (HR 1.43 95%CI [0.89;2.29], p=0.14). Conclusion and relevance Compared to the Delta variant, the Omicron variant is less likely to result in ICU admission and less likely to be associated with pneumonia. However, when patients with the Omicron variant are admitted for pneumonia, the severity seems similar to that of patients with the Delta variant, with more immunocompromised and vaccinated patients and no difference in adjusted in-ICU mortality. Further studies are needed to confirm our results.

6.
PLoS One ; 16(12): e0261024, 2021.
Article in English | MEDLINE | ID: covidwho-1623650

ABSTRACT

BACKGROUND: Tracheostomy has been proposed as an option to help organize the healthcare system to face the unprecedented number of patients hospitalized for a COVID-19-related acute respiratory distress syndrome (ARDS) in intensive care units (ICU). It is, however, considered a particularly high-risk procedure for contamination. This paper aims to provide our experience in performing tracheostomies on COVID-19 critically ill patients during the pandemic and its long-term local complications. METHODS: We performed a retrospective analysis of prospectively collected data of patients tracheostomized for a COVID-19-related ARDS in two university hospitals in the Paris region between January 27th (date of first COVID-19 admission) and May 18th, 2020 (date of last tracheostomy performed). We focused on tracheostomy technique (percutaneous versus surgical), timing (early versus late) and late complications. RESULTS: Forty-eight tracheostomies were performed with an equal division between surgical and percutaneous techniques. There was no difference in patients' characteristics between surgical and percutaneous groups. Tracheostomy was performed after a median of 17 [12-22] days of mechanical ventilation (MV), with 10 patients in the "early" group (≤ day 10) and 38 patients in the "late" group (> day 10). Survivors required MV for a median of 32 [22-41] days and were ultimately decannulated with a median of 21 [15-34] days spent on cannula. Patients in the early group had shorter ICU and hospital stays (respectively 15 [12-19] versus 35 [25-47] days; p = 0.002, and 21 [16-28] versus 54 [35-72] days; p = 0.002) and spent less time on MV (respectively 17 [14-20] and 35 [27-43] days; p<0.001). Interestingly, patients in the percutaneous group had shorter hospital and rehabilitation center stays (respectively 44 [34-81] versus 92 [61-118] days; p = 0.012, and 24 [11-38] versus 45 [22-71] days; p = 0.045). Of the 30 (67%) patients examined by a head and neck surgeon, 17 (57%) had complications with unilateral laryngeal palsy (n = 5) being the most prevalent. CONCLUSIONS: Tracheostomy seems to be a safe procedure that could help ICU organization by delegating work to a separate team and favoring patient turnover by allowing faster transfer to step-down units. Following guidelines alone was found sufficient to prevent the risk of aerosolization and contamination of healthcare professionals.


Subject(s)
COVID-19/surgery , Tracheostomy/methods , Aged , COVID-19/mortality , COVID-19/therapy , Critical Care/methods , Female , Follow-Up Studies , Hospitals, University , Humans , Intensive Care Units , Length of Stay , Male , Middle Aged , Paris , Personnel, Hospital , Respiration, Artificial , Retrospective Studies , Tracheostomy/adverse effects , Treatment Outcome
7.
Respir Med Res ; 80: 100847, 2021 Nov.
Article in English | MEDLINE | ID: covidwho-1300984

ABSTRACT

BACKGROUND: The COVID-19 pandemic has been associated with an increase in anxiety and depression symptoms in people. We investigated the impact of the pandemic on coping strategies and anxiety and depression in lung transplantation (LT) recipients and patients with end-stage chronic lung disease awaiting LT. METHODS: We retrospectively investigated coping strategies by using the Coping Inventory for Stressful Situations questionnaire and anxiety and depression symptoms by the Hospital Anxiety and Depression scale in 115 LT candidates and recipients. RESULTS: Overall, 63 participants (20 women; median age 59 years [interquartile range 52•65]) answered one or both questionnaires (49 LT recipients and 14 LT candidates). The preferred coping strategy was task-focused for 51 (86.4%) participants, with no difference between LT recipients and candidates nor according to the main anamnestic and clinical data. Eleven patients had suspected or proven depression symptoms, and 18 had suspected or proven anxiety symptoms. Coping strategies related to COVID-19 did not differ by presence of anxiety or depression symptoms. CONCLUSION: In the current pandemic, healthcare professionals should consider these results to provide relevant psychological help to these fragile populations and promote a systematic and wide multidisciplinary assessment of LT recipients and candidates.


Subject(s)
COVID-19 , Lung Transplantation , Adaptation, Psychological , Anxiety/epidemiology , Anxiety/etiology , Cross-Sectional Studies , Depression/epidemiology , Depression/etiology , Female , Humans , Lung Transplantation/adverse effects , Middle Aged , Pandemics , Retrospective Studies , SARS-CoV-2
8.
PLoS One ; 16(4): e0250728, 2021.
Article in English | MEDLINE | ID: covidwho-1207636

ABSTRACT

Among 197 COVID-19 patients hospitalized in ICU, 88 (44.7%) experienced at least one bacterial infection, with pneumonia (39.1%) and bloodstream infections (15,7%) being the most frequent. Unusual findings include frequent suspicion of bacterial translocations originating from the digestive tract as well as bacterial persistence in the lungs despite adequate therapy.


Subject(s)
Bacterial Infections/complications , COVID-19/complications , Pneumonia, Bacterial/complications , Aged , Bacterial Infections/epidemiology , COVID-19/epidemiology , Female , France/epidemiology , Hospitalization , Humans , Intensive Care Units , Lung/microbiology , Lung/virology , Male , Middle Aged , Pneumonia, Bacterial/epidemiology
12.
Eur J Clin Microbiol Infect Dis ; 40(10): 2227-2234, 2021 Oct.
Article in English | MEDLINE | ID: covidwho-1139366

ABSTRACT

Because the diagnosis of co/superinfection in COVID-19 patients is challenging, empirical antibiotic therapy is frequently initiated until microbiological analysis results. We evaluated the performance and the impact of the BioFire® FilmArray® Pneumonia plus Panel on 112 respiratory samples from 67 COVID-19 ICU patients suspected of co/superinfections. Globally, the sensitivity and specificity of the test were 89.3% and 99.1%, respectively. Positive tests led to antibiotic initiation or adaptation in 15% of episodes and de-escalation in 4%. When negative, 28% of episodes remained antibiotic-free (14% no initiation, 14% withdrawal). Rapid multiplex PCRs can help to improve antibiotic stewardship by administering appropriate antibiotics earlier and avoiding unnecessary prescriptions.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Bacteria/isolation & purification , Bacterial Infections/drug therapy , COVID-19/complications , Multiplex Polymerase Chain Reaction/methods , Aged , Antimicrobial Stewardship , Bacteria/classification , Bacteria/drug effects , Bacteria/genetics , Bacterial Infections/diagnosis , Bacterial Infections/microbiology , COVID-19/virology , Female , Hospitalization , Humans , Intensive Care Units/statistics & numerical data , Male , Middle Aged , Retrospective Studies , SARS-CoV-2/genetics , SARS-CoV-2/physiology
15.
Sci Rep ; 11(1): 2291, 2021 01 27.
Article in English | MEDLINE | ID: covidwho-1065945

ABSTRACT

Coronavirus disease 2019 (COVID-19) pandemic is affecting millions of patients worldwide. The consequences of initial exposure to SARS-CoV-2 go beyond pulmonary damage, with a particular impact on lipid metabolism. Decreased levels in HDL-C were reported in COVID-19 patients. Since HDL particles display antioxidant, anti-inflammatory and potential anti-infectious properties, we aimed at characterizing HDL proteome and functionality during COVID-19 relative to healthy subjects. HDLs were isolated from plasma of 8 severe COVID-19 patients sampled at admission to intensive care unit (Day 1, D1) at D3 and D7, and from 16 sex- and age-matched healthy subjects. Proteomic analysis was performed by LC-MS/MS. The relative amounts of proteins identified in HDLs were compared between COVID-19 and controls. apolipoprotein A-I and paraoxonase 1 were confirmed by Western-blot analysis to be less abundant in COVID-19 versus controls, whereas serum amyloid A and alpha-1 antitrypsin were higher. HDLs from patients were less protective in endothelial cells stiumalted by TNFα (permeability, VE-cadherin disorganization and apoptosis). In these conditions, HDL inhibition of apoptosis was blunted in COVID-19 relative to controls. In conclusion, we show major changes in HDL proteome and decreased functionality in severe COVID-19 patients.


Subject(s)
COVID-19/blood , Lipoproteins, HDL/blood , Apolipoprotein A-I/blood , Aryldialkylphosphatase/analysis , Aryldialkylphosphatase/blood , COVID-19/epidemiology , COVID-19/pathology , COVID-19/virology , Case-Control Studies , Chromatography, Liquid/methods , Endothelial Cells/pathology , Female , France/epidemiology , Humans , Male , Middle Aged , Pandemics , Proteome/metabolism , Proteomics/methods , SARS-CoV-2/isolation & purification , Serum Amyloid A Protein/metabolism , Tandem Mass Spectrometry/methods , Tumor Necrosis Factor-alpha/blood , alpha 1-Antitrypsin/blood
17.
PLoS One ; 15(12): e0243261, 2020.
Article in English | MEDLINE | ID: covidwho-1004446

ABSTRACT

BACKGROUND: Rapid identification of patients with high suspicion of COVID-19 will become a challenge with the co-circulation of multiple respiratory viruses (RVs). We have identified clinical or biological characteristics to help distinguish SARS-CoV-2 from other RVs. METHODS: We used a prospective cohort including all consecutive patients admitted through the emergency department's (ED) and presenting respiratory symptoms from November 2019 to April 2020. Patients were tested for RV using multiplex polymerase chain reaction (mPCR) and SARS-CoV-2 RT-PCR. RESULTS: 203/508 patients were positive for an RV during the non-SARS-CoV-2 epidemic period (November to February), and 268/596 patients were SARS-CoV-2 positive during the SARS-CoV-2 epidemic (March to April). Younger age, male gender, fever, absence of expectoration and absence of chronic lung disease were statistically associated with SARS-CoV-2 detection. Combining these variables allowed for the distinguishing of SARS-CoV-2 infections with 83, 65, 75 and 76% sensitivity, specificity, PPV and NPV, respectively. CONCLUSION: Patients' characteristics associated with a positive PCR are common between SARS-CoV-2 and other RVs, but a simple discrimination of strong SARS-CoV-2 suspicion with a limited set of clinical features seems possible. Such scoring could be useful but has to be prospectively evaluated and will not eliminate the need for rapid PCR assays.


Subject(s)
COVID-19 Nucleic Acid Testing/statistics & numerical data , COVID-19/epidemiology , Emergency Service, Hospital/statistics & numerical data , Adult , Aged , Aged, 80 and over , COVID-19/diagnosis , Diagnosis, Differential , Female , Humans , Male , Middle Aged , Multiplex Polymerase Chain Reaction/statistics & numerical data , Point-of-Care Testing/statistics & numerical data
19.
PLoS One ; 15(9): e0239573, 2020.
Article in English | MEDLINE | ID: covidwho-793642

ABSTRACT

INTRODUCTION: Severe acute respiratory syndrome coronavirus2 has caused a global pandemic of coronavirus disease 2019 (COVID-19). High-density lipoproteins (HDLs), particles chiefly known for their reverse cholesterol transport function, also display pleiotropic properties, including anti-inflammatory or antioxidant functions. HDLs and low-density lipoproteins (LDLs) can neutralize lipopolysaccharides and increase bacterial clearance. HDL cholesterol (HDL-C) and LDL cholesterol (LDL-C) decrease during bacterial sepsis, and an association has been reported between low lipoprotein levels and poor patient outcomes. The goal of this study was to characterize the lipoprotein profiles of severe ICU patients hospitalized for COVID-19 pneumonia and to assess their changes during bacterial ventilator-associated pneumonia (VAP) superinfection. METHODS: A prospective study was conducted in a university hospital ICU. All consecutive patients admitted for COVID-19 pneumonia were included. Lipoprotein levels were assessed at admission and daily thereafter. The assessed outcomes were survival at 28 days and the incidence of VAP. RESULTS: A total of 48 patients were included. Upon admission, lipoprotein concentrations were low, typically under the reference values ([HDL-C] = 0.7[0.5-0.9] mmol/L; [LDL-C] = 1.8[1.3-2.3] mmol/L). A statistically significant increase in HDL-C and LDL-C over time during the ICU stay was found. There was no relationship between HDL-C and LDL-C concentrations and mortality on day 28 (log-rank p = 0.554 and p = 0.083, respectively). A comparison of alive and dead patients on day 28 did not reveal any differences in HDL-C and LDL-C concentrations over time. Bacterial VAP was frequent (64%). An association was observed between HDL-C and LDL-C concentrations on the day of the first VAP diagnosis and mortality ([HDL-C] = 0.6[0.5-0.9] mmol/L in survivors vs. [HDL-C] = 0.5[0.3-0.6] mmol/L in nonsurvivors, p = 0.036; [LDL-C] = 2.2[1.9-3.0] mmol/L in survivors vs. [LDL-C] = 1.3[0.9-2.0] mmol/L in nonsurvivors, p = 0.006). CONCLUSION: HDL-C and LDL-C concentrations upon ICU admission are low in severe COVID-19 pneumonia patients but are not associated with poor outcomes. However, low lipoprotein concentrations in the case of bacterial superinfection during ICU hospitalization are associated with mortality, which reinforces the potential role of these particles during bacterial sepsis.


Subject(s)
Cholesterol, HDL/blood , Cholesterol, LDL/blood , Coronavirus Infections/blood , Pneumonia, Bacterial/blood , Pneumonia, Ventilator-Associated/blood , Pneumonia, Viral/blood , Superinfection/blood , Aged , Betacoronavirus , COVID-19 , Coronavirus Infections/mortality , Female , France , Hospitals, University , Humans , Intensive Care Units , Male , Middle Aged , Pandemics , Pneumonia, Bacterial/mortality , Pneumonia, Ventilator-Associated/mortality , Pneumonia, Viral/mortality , Prospective Studies , SARS-CoV-2
20.
Anesth. Reanim. ; 2020.
Article in English, French | WHO COVID, ELSEVIER | ID: covidwho-738087

ABSTRACT

We report here the implementation and the use during 24 days of critical care beds beyond the walls during the COVID-19 outbreak in a teaching university hospital in Paris. These beds were settled in a 14-bed recovery room and two adjacent operating theatres leading to 20 additional critical care beds. The historical timeline, architectural elements, human resources, organisation and medical devices issues are presented. The benefits and limitations of this organisation are discussed.

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