[Evolucion de marcadores de laboratorio en pacientes con deteccion persistente de SARS-CoV-2.]

OBJECTIVE: The study of the evolution of certain biomarkers in patients with persistent detection of SARS-CoV-2 could determine the profile of the pathology that these patients may suffer. The objective of this study was to describe the evolution of different laboratory markers in patients with persistent detection of SARS-CoV-2, and determining these parameters were into reference values. METHODS: Patients were divided into two groups: the control group (G0) included patients with a positive direct test for SARS-CoV-2 followed by 2 negative, while the problem group (G1) included patients with at least 3 consecutive positive tests. The time between consecutive samples was five to twenty days, and only patients with negative serology were included. Demographic data, comorbidities, symptoms, radiology and hospitalization were collected, as well as data from analytic and blood gases. The comparison between the study groups was realized using the t-student and U Mann-Whitney test for quantitative variables, and the chi2 test for qualitative variables. Results with p<0.05 were taken as significant. RESULTS: Ninety patients were included, thirty-eight in G0 and fifty-two in G1. D-dimer decreased 10.20 times more in G0 patients, and normal levels of this parameter at t1 were 1.46 times more frequent in these patients. The percentage of lymphocytes increased sixteen times more in G0, and the normal values in t1 were 10.40 times more common in these patients. C-reactive protein decreased significantly in both groups, and lactate increased more in G1 patients. CONCLUSIONS: The results of the study suggest that some biomarkers evolve differently in patients with persistent detection of SARS-CoV-2, which may have significant clinical impact. This information could help to determine the main organs or systems affected, allowing to anticipate socio-sanitary measures to prevent or compensate these alterations.

Early prone positioning under VV-ECMO in SARS- CoV-2-induced acute respiratory distress syndrome - a retrospective cohort study

Objectives: The effectiveness of prone positioning (PP) under VV-ECMO for severe COVID-19 still be unclear. Until now, PP under VV-ECMO was often performed as the trump card for refractory hypoxemia and weaning off ECMO. On the other hand, PP has the effect of promoting homogenization of Lung aeration and leading to prevention of VILI. Combine use of early prone positioning together VV-ECMO may have synergy effects of ultra-lung protective strategy. In this study, we analyzed early PP cases under VV-ECMO for severe COVID-19 in our hospital and examined their efficacy and feasibility. Method(s): We performed a retrospective study of patients with SARS-CoV-2-induced ARDS submitted to early PP during VV-ECMO. During VVECMO, PP was considered in case of "Type-H transition in imaging findings (CT / LUS) " and cases that the physician deemed necessary. The lung aeration is evaluated by LUS before and after each PP. If there is a finding that the dorsal collapsed lung is improved through PP, it is implemented as effective, and it continued. Result(s): From April 2021 to August 2021, there were a total of 10 early PP cases under ECMO, and the age was (average) 56 years. ECMO was implanted with P/F 98 and Murray score 3.3 points, and PP was started 14 hours after the ECMO implantation. The average PP duration is 17.4 hours and PP performed 5.8 times per patient. Comparing blood gas and respiratory mechanics before and after PP showed a significant difference in PaCO2 (before: 46 +/- 8 vs after: 42 +/- 9, p = 0.02). Finally, there were 10 ECMO successful weaning (100%) and 8 surviving discharges (80%). No major complications were observed. Conclusion(s): Early PP under VV-ECMO for severe COVID-19 can be safely performed, and it is suggested that the synergy effect of ultra-lung protective strategy may be associated with a reduction of hospital mortality.

Managing Severe Acute Asthma Exacerbation in Pregnancy during the COVID-19 Pandemic: A Case Report from a Resource-limited Setting

BACKGROUND: One-third of pregnant women will experience worsening asthma requiring emergency hospitalization. However, no report comprehensively discussed the management of asthma attacks in pregnant women in impoverished settings. We attempt to illuminate what general practitioners can do to stabilize and improve the outcome of severe acute asthma exacerbations in primary care with resource limitations. CASE REPORT: A nulliparous 29-year-old woman in her 21st week of pregnancy presented severe acute asthma exacerbation in moderate persistent asthma with uncontrolled asthma status along with gestational hypertension, uncompensated metabolic acidosis with a high anion gap, anemia, respiratory infection, and asymptomatic bacteriuria, all of which influenced her exacerbations. This patient was admitted to our resource-limited subdistrict hospital in Indonesia during the COVID-19 pandemic for optimal stabilization. Crystalloid infusions, oxygen supplementation, nebulized beta-agonist with anticholinergic agents, inhaled corticosteroids, intravenous methylprednisolone, broad-spectrum antibiotics, subcutaneous terbutaline, mucolytics, magnesium sulphate, oral antihypertensives, and continuous positive airway pressure were used to treat her life-threatening asthma. After she was stabilized, we referred the patient to a higher-level hospital with more advanced pulmonary management under the supervision of a multidisciplinary team to anticipate the worst scenario of pregnancy termination. CONCLUSION(S): Limitations in primary care, including the lack of sophisticated intensive care units and laboratory panels, may complicate challenges in managing severe acute asthma exacerbation during pregnancy. To enhance maternal-fetal outcomes, all multidisciplinary team members should be well-informed about key asthma management strategies during pregnancy using evidence-based guidelines regarding the drug, rationale, and safety profile.Copyright © 2023 Muhammad Habiburrahman, Triya Damayanti, Mohammad Adya Firmansha Dilmy, Hariyono Winarto.

Helping Hands

Introduction: We work in a large, tertiary Teaching Hospital Critical Care unit. As such we have a sizeable and diverse workforce from multiple professional backgrounds. We noted both anecdotally, and from the formal process of Exit Interviews that the changes imposed by the Covid-19 pandemic were impacting on team relationships. Physical barriers enforced by social distancing, as well as the burden of increased patient numbers and changes to job roles had driven apart nursing and medical teams. Critical care appeals to many staff because of the MDT and the chance to work with highly qualified, ambitious colleagues with varying skill sets. Nurturing this positive working relationship between different teams requires a commitment from all to share the burden of increased pressures wherever possible. Objective(s): The aims for this project are to identify specific areas within the working relationship between the medical team and the nursing team that can be improved. More than this, we want to open wider conversation about how teams can work more collaboratively for the benefit of the working environment, staff mental health and ultimately the patient. Method(s): We created an e-survey with input from the critical care matrons and psychologists before distributing amongst nursing staff. Questions focused on communication, practical support and the general working relationship. Each section contained MCQ's and white space questions to allow us to collect both quantitative and qualitative data. Following collection of responses we identified common themes that could be addressed and created an eye-catching poster with specific suggestions for the medical team. Result(s): Communication: Common themes were more presence on the unit with more regular walk-rounds and that STAT medications are often prescribed but not communicated to the nurse at the bedside and are therefore delayed. Practical support: Common suggestions were helping with repositioning patients and relieving breaks. Others included, pulling blood gases, printing off blood request forms and working in pairs for lines so that the nurse doesn't have to be engaged. Working relationship: suggestions mainly focused around introducing ourselves and level of training as well as social integration of the two teams. A few said that improving the communication and assisting with tasks would feed into improving the relationship. A few also said that the survey itself was a good start. Discussion(s): The survey generated many useful suggestions as well as demonstrating an open and receptive attitude. Responses were used to create a poster that gives clear and practical advice to the medical team. This method is easily reproducible and we believe that we have already seen positive changes that have been widely well received. We plan also to send a follow up survey once changes have become ingrained into the culture of the workforce. Acknowledgements Matthew Powell Jane Atkins Nathan Shearman Helen Horton.

A Successful Treatment of a Critically Patient with SARS-CoV2

Background: The role of inflammatory cytokines is known in the pathogenesis of organ damage and is also confirmed in the context of COVID-19 disease. The modulation of the cytokine storm seems to determine endothelial protection, which can translate into a reduction of the "capillary leak syndrome", and, consequently, in a better control of the formation of edema and pulmonary infiltrates. CytoSorb stands in this context as a cartridge capable of adsorbing cytokines and allowing a better clinical course. Case Report: A 69 years-old woman with a history of arterial hypertension, diabetes mellitus and CKD, was admitted to ICU for SARS Cov 2 related critical illness staged with chest CT, blood gas analysis and PCR. At the admission, the patient presented with ubiquitous interstitial pneumonia, PaO2 60 mmHg with 90% Airvo2 and PCR 36.67. Therefore, in order to remove inflammatory cytokines, the patient underwent hemoperfusion treatment with the CytoSorb adsorbent cartridge. Method(s): The protocol used is approved by the FDA for the treatment of covid patients and consists of the use of 4 cartridges 12h, 12h, 24h, 24h with measurement for each cycle of PCR, PaO2 and chest CT control. Result(s): During the hemoperfusion whit CytoSorb, respiratory failure improved until the patient was discharged from the ICU on the tenth day, with oxygen support via simple facial mask. Below the progressive values of the PCR, PaO2 and the chest CT control on the twelfth day. Conclusion(s): The hemoperfusion treatment with the CytoSorb adsorbent cartridge proved to be a valid adjuvant therapy in determining a better clinical course both in terms of the need for invasive mechanical ventilation and survival.

What the Eye Cannot See: A Case of Persistent Altered Mental Status in a Patient With Cholestatic Liver Disease?

Introduction: Altered mental status (AMS) is a common symptom in patients with liver disease with a wide list of differential diagnoses. Knowledge of etiologies of AMS unique to patients with hepatic dysfunction is vital in order to help recognize, diagnose, and treat the underlying cause in a timely manner. Case Description/Methods: A 46-year-old man with a history of recent COVID infection was transferred to our hospital for further evaluation of acute liver injury and AMS. On arrival, his labs were notable for AST of 408 U/L, ALT of 620 U/L, ALP of 5942 U/L, TB of 11.0 mg/dL, and an INR of 1.1. His work-up included an MRCP that showed segmental biliary ductal dilation with associated restricted diffusion and peribiliary enhancement concerning for sclerosing cholangitis. ERCP revealed a 3cm biliary cast that was removed and noted diffuse rarefaction of ducts throughout the entire biliary tree. A liver biopsy revealed centrizonal cholestasis with portal-based bile ductular reaction and mild bile duct injury. Despite adequate treatment of suspected infection and hepatic encephalopathy, his AMS persisted. His basic metabolic panel (BMP) was notable for Na of 143 mEq/L. A send-out lipid panel that was obtained to work-up his dyslipidemia revealed a total cholesterol of 1018 mg/dL, triglycerides of 420mg/dL, and the presence of lipoprotein X. A venous blood gas (VBG) was obtained showing a Na of 157 mEq/L and serum osmolality was 322 mmol/kg, confirming true hypernatremia. He was slowly treated with hypotonic solutions with significant improvement in his mentation. On follow-up one year later, he has persistent cholestasis and is currently being considered for liver transplant. Discussion(s): The final diagnosis was COVID-related ischemic cholangitis and disappearing bile ducts with persistent cholangiopathy, presenting with severe cholestasis, accumulation of lipoprotein X, and pseudonormonatremia. When faced with severe cholestatic liver disease, clinicians should keep in mind the possibility of accumulation of lipoprotein X and its association with hyperviscosity and spurious electrolyte abnormalities. Clinicians should rely on obtaining blood gas analyses for accurate electrolyte measurement in such cholestatic patients as blood gas analyses utilize direct ion-sensitive electrodes (ISE) to measure electrolytes, whereas routine basic metabolic panels utilize indirect ISE that are liable to spurious results in the presence of hyperlipoproteinemia/lipoprotein X.

Lung inhomogeneities in COVID-19 related acute respiratory distress syndrome

Introduction: In acute respiratory distress syndrome (ARDS) inhomogeneities in lung aeration can act as local multipliers of pressure during inspiration (stress risers), increasing the risk of lung damage even in presence of airway pressures considered safe [1]. In this study we aimed to describe lung inhomogeneities in COVID-19 related ARDS (C-ARDS) and to relate these to disease severity and lung morphology. Method(s): We enrolled patients with C-ARDS within 3 days from mechanical ventilation start, deeply sedated and paralyzed. Lung CT scan was obtained at PEEP of 5 cmH2O to measure lung weight compartments (non-, poorly-, well- and over-aerated). Lung inhomogeneities were computed as the gas/tissue ratio of each voxel compared to the neighboring voxels. We considered values > 1.61 as pathologic lung inhomogeneities, as previously described [1]. The fraction of total lung volume with pathologic inhomogeneities (extent) and the average severity of inhomogeneities contained in that fraction (intensity) was calculated. Respiratory system compliance and blood gas analysis were obtained at the same PEEP level of the CT scan. Some results have been presented in another publication [2]. Result(s): Forty patients were studied in the supine position 1 (0-1) days after ICU admission. The extent of pathologic lung inhomogeneities represented 18 +/- 4% of total lung volume. The intensity of pathologic lung inhomogeneities was on average 2.53 +/- 0.12. Extent was positively correlated with the amount of poorly aerated lung weight ( r2 = 0.51, p < 0.001) (Fig. 1) and negatively correlated with the amount of non-aerated lung weight ( r2 = 0.22, p = 0.002). No correlation was found between extent and intensity and PaO2/ FiO2, dead space fraction or respiratory system compliance. Conclusion(s): In C-ARDS lung inhomogeneities represent roughly 20% of total lung volume. In these regions local stress is increased with risk of secondary lung damage.

Latent class analysis of imaging and clinical respiratory parameters from patients with COVID-19-related ARDS identifies recruitment subphenotypes

Introduction: Patients with COVID-19-related acute respiratory distress syndrome (ARDS) require respiratory support with invasive mechanical ventilation and show varying responses to recruitment manoeuvres. In patients with ARDS not related to COVID-19, two pulmonary subphenotypes that differed in recruitability were identified using latent class analysis (LCA) of imaging and clinical respiratory parameters [1]. We aimed to validate these phenotypes and evaluate if similar subphenotypes are present in patients with COVID-19-related ARDS. Method(s): This is the retrospective analysis of mechanically ventilated patients with COVID-19-related ARDS who underwent CT scans at positive end-expiratory pressure of 10 cmH2O and after a recruitment manoeuvre at 20 cmH2O. LCA was applied to quantitative CT-derived parameters, clinical respiratory parameters, blood gas analysis and routine laboratory values before recruitment to identify subphenotypes. Result(s): 99 patients were included. Using 12 variables, a two-class LCA model was identified as best fitting. Subphenotype 2 (recruitable) was characterized by a lower PaO2/ FiO2, lower normally aerated lung volume and lower compliance as opposed to a higher nonaerated lung mass and higher mechanical power when compared to subphenotype 1 (non-recruitable) (Fig. 1). Patients with subphenotype 2 had more decrease in non-aerated lung mass in response to a standardized recruitment manoeuvre (p = 0.024) and were mechanically ventilated longer until successful extubation (adjusted SHR 0.46, 95% CI 0.23-0.91, p = 0.026), while no difference in survival was found (p = 0.814). Conclusion(s): A recruitable and non-recruitable subphenotype were identified in patients with COVID-19-related ARDS. The subphenotypes are similar to non-COVID-19-related ARDS and are promising for identification of recruitable patients in future practice as they can be classified with only few clinically available parameters before the recruitment manoeuvre.

Predictive value of central venous-to-arterial carbon dioxide tension in patients with ARDS treated with veno - venous extracorporeal membrane oxygenation (ECMO)

Introduction: Central venous-to-arterial carbon dioxide tension ( PvaCO2) can be useful for monitoring adequacy of tissue perfusion in patients with ARDS supported with veno-venous Extracorporeal Membrane Oxygenation (VV-ECMO). However, in theory, the unavoidable mixing of venous blood with blood after the oxygenator can affect PvaCO2 values by increasing central venous oxygen saturation and substantially decreasing CO2 concentration. This study aimed to evaluate acute changes in PvaCO2 after VV-ECMO installation and determine its association with patient outcomes. Method(s): Retrospectively evaluated coronavirus disease 2019 (COVID-19) ARDS patients with at least one concurrent arterial and central venous blood gas analysis before and after VV-ECMO installation as standard care. The primary outcome was intensive care unit (ICU) mortality at 28 days. Result(s): 29 patients were enrolled in the study. All the patients had a 25 F drainage multistage femoral cannula and a 21 F internal jugular infusion cannula. The median distance between the central venous sampling point and the tip of the infusion cannula was 39 [23-73] mm. No statistically significant changes in PvaCO2frelative changes calculated. After were observed 24-48 h after VV-ECMO installation (5 [4-7] mmHg to 6.5 [5-8.2] mmHg, p = 0.12). Hemoglobin concentration decreased 24 to 48 h after VVECMO installation (10.7 [9.5-12.7] g/dl to 9.6 [8.8-11.6] g/dl, p < 0.01) but neither central venous (75 [70-81]% to 73 [67-78]%, p = 0.46) nor arterial oxygen saturation (95 [92-97]% to 95 [93-96]%, p = 0.81) changed significantly. Elevated PvaCO2 after VV-ECMO installation had a good predictive value for 28 day ICU mortality (calculated area under the ROC curve 0.81) (Fig. 1 veno-venous). Conclusion(s): VV-ECMO support appears to have little effect on the PvaCO2 calculation. PvaCO2 can be used to evaluate patients with ARDS supported with VV-ECMO, as persistently elevated values can be associated with poor outcomes.

Increased shunt and dead space in recovered COVID-19 pneumonitis patients

Introduction/Aim: We previously reported impaired pulmonary gas exchange in acute COVID-19 patients resulting from both increased intrapulmonary shunt (SH) and increased alveolar dead space (AD) 1 . The present study quantifies gas exchange in recovered patients. Method(s): Unvaccinated patients diagnosed with acute COVID-19 infection (March-December 2020) were studied 15 to 403 days post first SARS-CoV-2 positive PCR test. Demographic, anthropometric, acute disease severity and comorbidity data were collected. Breathing room air, steady-state exhaled gas concentrations were measured simultaneously with arterial blood gases. Alveolar CO 2 and O 2 (P A CO 2 and P A O 2 ;mid-exhaled volume) determined;AaPO2, aAPCO2, SH% and AD% calculated. 2 Results: We studied 59 patients (33 males, Age: 52[38-61] years, BMI: 28.8[25.3-33.6] kg/m 2 ;median[IQR]). Co-morbibities included asthma (n = 2), cardiovascular disease (n = 3), hypertension (n = 12), and diabetes (n = 9);14 subjects smoked;44 had experienced mild-moderate COVID-19 (NIH category 1-2), 15 severe-critical disease (NIH category 3-5). PaCO 2 was 39.4[35.6-41.1] mmHg, PaO 2 92.1[87.1-98.2] mmHg;P A CO 2 32.8[28.6-35.3] mmHg, P A O 2 112.9[109.4-117.0] mmHg, AaPO 2 18.8[12.6-26.8] mmHg, aAPCO 2 5.9[4.3-8.0] mmHg, SH 4.3 [2.1-5.9]% and AD 16.6 [12.6-24.4]%. 14% of patients had normal SH (<5%) and AD (<10%);1% abnormal SH and normal AD;36% both abnormal SH and AD;49% normal shunt and abnormal AD. Previous severe-critical disease was a strong independent predictor for increased SH (OR 14.8[2.28-96], [95% CI], p < 0.01), increasing age weakly predicted increased AD (OR 1.18[1.01, 1.37], p < 0.04). Time since infection, BMI and comorbidities were not significant predictors (all p > 0.11). Conclusion(s): Prior COVID-19 was associated with increased intrapulmonary shunt and/or increased alveolar dead space in 86% of this cohort up to ~13 months post infection, with those with more severe acute disease, and older patients, at greater risk. Increased intrapulmonary shunt suggests persistent alveolar damage, while increased alveolar dead space may indicate persistent pulmonary vascular occlusion.

COVID-19 management using respiratory supports in the ward, Australian hospital

Introduction/Aim: Acute hypoxaemic respiratory failure occurs often in people with COVID-19 pneumonia, with high need for respiratory support therapies (RST). We aimed to examine the clinical management of COVID-19 pneumonia including use of ward-based RST. Method(s): A ambispective electronic medical record review was conducted at an Australian tertiary hospital for COVID-19 patients requiring ward-based RST between 28/02/2020 and 18/03/2022. Result(s): Of 964 patient records identified, 670 were included, with 61% male and mean age 62 years (SD=19). 344 (51.4%) were unvaccinated, with 120 (17.9%) having >=1respiratory comorbidities. Prone positional therapy was achieved in 63 (9.4%) and recommended in 221 (33%) patients. High flow nasal oxygen (HFNO;n = 243, 36.2%), continuous positive airway pressure (CPAP;n = 131, 19.5%) and non-invasive ventilation (NIV;n = 4, 0.6%) were frequently administered to patients. 120 (49.4%) patients received both HFNO and CPAP. Arterial blood gases were infrequently measured prior to initiation of HFNO (n = 23, 9.5%) or CPAP (n = 25,19.1%). Target saturation aims were documented in 547 (81.6%) patients with a medical prescription for RST in 486 (72.5%). Patients using HFNO/CPAP/NIV had a daily respiratory nurse consultant review 236 (97.1%) with documented RST prescriptions and aims. Medical verification occurred at least once per admission from a consultant or advanced trainee for 213 (87.6%) HFNO patients and 117 (89.3%) CPAP patients. Median usage of HFNO was 2 days (IQR 1-4) and for CPAP 1 days (IQR 0.5-3). The median length of stay was 5 days (IQR 3-8). Clinical escalation with transfer to ICU occurred in 90 (13.4%) patients, with 24 (26.6%) intubated. 44 (6.6%) patients died. Most (n = 424, 63.2%) were discharged directly home without requiring domiciliary respiratory supports. Conclusion(s): Multidisciplinary, ward-based RST was successfully provided to most patients with COVID-19 pneumonia with clear documentation of processes of care. Support for and expansion of ward-based RST models of care should be considered longer term. Conflict of Interest: Nil.

Effect of N95 Filtering Facepiece Respirator on Venous Blood Carbon Dioxide Levels and Hemodynamic Changes in Health Care Workers.

Background: N95 filtering facepiece respirators (FFR) are used by health care workers for prevention of airborne infection, and its use has increased manifolds during COVID-19 pandemic. Prolonged use may result in carbon dioxide (CO2) accumulation, affect hemodynamics, and blood gas values. Although arterial blood gas values accurately measure the blood CO2 levels, venous blood gas values also show acceptable correlation. Aim: To evaluate the physiological impact of N95 FFRs on health care workers, including hemodynamic changes and venous blood levels of CO2 during a period of 6 h. Settings and Design: Prospective observational study in a tertiary care hospital. Methods: The study was conducted on 30 health care workers who performed routine duties while wearing N95 FFR. Venous blood gas values (CO2, pH, and bicarbonate) and vitals (respiratory rate, heart rate, blood pressure, and saturation) were noted at baseline, 2 (T2), and 6 h (T6) after wearing the mask. Discomfort level was also measured on a Visual Analogue Scale (VAS) of 1-10. Statistical Analysis: Repeated measures analysis was done using repeated measures ANOVA or Friedman's test. Group comparisons for continuously distributed data were made using independent sample "t" test or Wilcoxon test. Results and Conclusion: Hemodynamic and blood gas values did not change over time. The VAS for discomfort because of respirator use was 1.33 (1.42) at T2 and 2.77 (1.91) at T6. This was a significant increase in discomfort over time (P = 0.001). About 80% of participants experienced discomfort during this period. N95 FFR did not lead to significant alteration in hemodynamics or change in blood gas values after 6 h of continuous usage. However, discomfort significantly increased over time.

Racial Disparities in Pulse Oximeter Device Inaccuracy and Estimated Clinical Impact on COVID-19 Treatment Course.

Arterial blood oxygen saturation measured by pulse oximetry (SpO2) may be differentially less accurate for people with darker skin pigmentation, which could potentially affect COVID-19 treatment course. We analyzed pulse oximeter accuracy and association with COVID-19 treatment outcomes using electronic health record (EHR) data from Sutter Health, a large, mixed-payer, integrated healthcare delivery system in northern California, United States (US). We analyzed two cohorts: (1) 43,753 concurrent arterial blood gas (ABG) oxygen saturation (SaO2)/SpO2 measurement pairs taken January 2020-February 2021 for Non-Hispanic white (NHW) or Non-Hispanic Black/African American (NHB) adults, and (2) 8,735 adults who went to the emergency department (ED) with COVID-19 July 2020-February 2021. Pulse oximetry systematically overestimated blood oxygenation by 1% more in NHB individuals than in NHW individuals. For people with COVID-19, this was associated with lower admission probability (-3.1 percentage-points), dexamethasone treatment (-3.1 percentage-points), and supplemental oxygen treatment (-4.5 percentage-points), as well as increased time-to-treatment: +37.2 minutes before dexamethasone initiation and +278.5 minutes before initiation of supplemental oxygen. These results call for additional investigation of pulse oximeters, and suggest that current guidelines for development, testing, and calibration of these devices should be revisited, investigated, and revised.

New Translational Trends in Personalized Medicine: Autologous Peripheral Blood Stem Cells and Plasma for COVID-19 Patient.

The COVID-19 pandemic, caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), still remains a severe threat. At the time of writing this paper, the second infectious wave has caused more than 280,000 deaths all over the world. Italy was one of the first countries involved, with more than 200,000 people reported as infected and 30,000 deaths. There are no specific treatments for COVID-19 and the vaccine still remains somehow inconclusive. The world health community is trying to define and share therapeutic protocols in early and advanced clinical stages. However, numbers remain critical with a serious disease rate of 14%, ending with sepsis, acute respiratory distress syndrome (ARDS), multiple organ failure (MOF) and vascular and thromboembolic findings. The mortality rate was estimated within 2-3%, and more than double that for individuals over 65 years old; almost one patient in three dies in the Intensive Care Unit (ICU). Efforts for effective solutions are underway with multiple lines of investigations, and health authorities have reported success treating infected patients with donated plasma from survivors of the illness, the proposed benefit being protective antibodies formed by the survivors. Plasma transfusion, blood and stem cells, either autologous or allograft transplantation, are not novel therapies, and in this short paper, we propose therapeutic autologous plasma and peripheral blood stem cells as a possible treatment for fulminant COVID-19 infection.

Outcomes of High-Dose Vitamin C Therapy on Patients Diagnosed with COVID-19 Associated ARDS in Intensive Care Units: Multi-Center Retrospective Study

Background and Aim: The new type of Severe Acute Respiratory Syndrome Coronavirus 2 (Coronavirus 2019-COVID-19) infection is the largest pandemic in the last decade. Acute respiratory distress syndrome is the complication with the highest mortality rate of this infection and there is no adequate treatment with proven efficacy to reduce mortality. This multi-center, retrospective study aimed to determine the effect of high-dose vitamin C on survival and other endpoints in invasively ventilated ARDS patients. Method(s): This multi-center, observational retrospective cohort study was performed at five ICU centers between March 2020 and July 2020. Patients with ARDS due to COVID-19 who required IMV were included. High-dose vitamin C group was defined as patients who were treated with vitamin C over 200 mg/kg for four days. Patients who were not given vitamin C treatment were defined as the control group by using propensity score match analysis, as well. The groups were compared about the effects of high-dose vitamin C treatment on ICU mortality. Result(s): A total of 86 patients with a mean age of 67.85 +/- 10.38 were included in the study. 72.1% of the patients were male. Forty-two (49%) patients were in the high dose vitamin C group, and 44 (51%) were in the control group. The mean PaO2/FiO2 at the time of admission to the ICU was 128.27+/-58.69 mmHg (133.63+/-56.51 mmHg in the control group, 122.36+/-61.18 mmHg in the study group, p=0.389). The mortality rate of high dose vitamin C group was lower than the control group (73.8% vs. 90.9%, p = 0.037,respectively). Conclusion(s): As an adjunctive therapy in invasively ventilated patients with COVID-19-associated ARDS, high doses of vitamin C may reduce mortality and development of organ damage. Prospective, randomized controlled studies with larger numbers of patients are needed to confirm these findings.Copyright © 2023, Society of Turkish Intensivists. All rights reserved.

Dynamic changes of il-6 blood level during covid-19 infection

Background: During COVID 19 pandemic many clinical presentations of respiratory infection were seen. Moreover, many other parts of the body can be involved. More than 75 % of patients were presented as respiratory infection. According to recent published data around 85 % of COVID 19 cases were asymptomatic. Patients with clinical presentation of COVID 19 pneumonia, if they are symptomatic, were presented as widespread pneumonia with appearance of ground glass opacities in most cases. Clinical course of COVID 19, if the predominant is respiratory infection, were divided according to severity, in five groups, as was presented in recent literature. Inflammatory markers rest the corner stone in process of decision making in diagnostic and therapeutic approach. Method(s): Patients treated in COVID Division of Pneumonology department of General hospital Tesanj were analyzed. Standardized diagnostic tools was performed for all patients, and separate other ones, if needs, as follow: Chest x-ray on admission, third, seventh hospitalization day and the day before discharge were performed. Chest CT scan was performed for patients if needs. IL-6, procalcitonin were performed so and LAB analyses including blood cells account, SE, CRP, LDH, CK, ALaAT, AspAT, total amount of proteins, albumins, globulins, lipids, creatinine, blood gas analyses, deep dimer, and other analyses if needs. Result(s): Out of all we analyzed 196, among them 93 female (47.45 %) and 103 (52.55 male, average age 53,2 (+/- 6.6) years. Measurement of IL-6 and procalcitonin were performed for those patients with substantial presentation of ground glass opacities in chest x-ray. Substantial variability was found in IL-6 level in relative short time frame, no more than 24 hours, in 38 patients. Variability of IL-6 was from 2.22 pg/ml as the lowest level and 2600 pg/ml as the highest measured level. Due to the large variability in the concentration of Il-6 in the blood, the calculation of the average value is not informative. Conclusion(s): We concluded that the level of IL-6 is very variable, with no constant close correlation with other inflammatory markers, like CRP.

A local outbreak as mirror-like scenario for COVID-19 worldwide progression. Clinical presentation to the Emergency Department during one of the first sub-regional outbreak in Italy A lesson to learn

BACKGROUND: One of the most precocious Italian COVID-19 outbreaks began in February 2020 in Medicina, a small town in the province of Bologna. We compared the characteristics of different cohorts, to identify potential predictive factors for outcome: patients of Medicina outbreak versus those of the surrounding district (Imola), and before or after the local medical intervention. METHOD(S): Between March the 3rd and April the 9th, 2020 167 adults with COVID-19 were admitted to the Emergency Department (ED) (78 from Medicina cluster, 89 from Imola district). Data at ED presentation were collected;hospitalized patients were followed until death or discharge. RESULT(S): Medicina and Imola cohorts were similar in age, main comorbidities, clinical presentation, laboratory tests, arterial blood gas analysis (ABG), death and acute respiratory distress syndrome (ARDS) rates. Age, hypertension, diabetes, chronic obstructive pulmonary disease, dyspnea, body temperature, quickSOFA Score, elevated C-reactive protein (CRP), creatinine, urea, DELTA A-a O2, respiratory rate and FiO2 were associated with death and ARDS. Elevated Glasgow Coma Scale, diastolic blood pressure, oxygen peripheral saturation, P/F and pH were associated with patient survival and protective from ARDS. After the intervention in Medicina district, patients presenting at ED were younger and with long-lasting symptoms;CRP values were significantly lower, ABG and respiratory clinical parameters were less severely impaired. These differences did not affect the outcome. CONCLUSION(S): Since the results of our study are consistent with worldwide evidences, we suggest that the early insight of a small local SARS-CoV-2 outbreak can be representative and predictive of the subsequent course of the virus in wider areas. This must be kept in mind to manage next epidemic waves.Copyright © 2022 EDIZIONI MINERVA MEDICA.

Initial five and ten-minute regional cerebral oxygen saturation as a predictor of the futility of resuscitation for out-of-hospital cardiac arrest

This study aimed to investigate the usefulness of cerebral regional oxygen saturation (rSO2) during the initial 5 and 10 minutes of cardiopulmonary resuscitation (CPR) compared with an initial rSO2 and mean rSO2 during entire CPR to predict the futility of resuscitation for patients without of-hospital-cardiac arrest (OHCA). This was a prospective study involving 52 adult patients presenting in OHCA and whose cerebral rSO2 values were measured until either CPR was terminated or sustained return of spontaneous circulation (ROSC) was achieved. Receiver operating characteristics analyses were used to evaluate which time and type of measurement is better to predict non-ROSC. The area under the curve (AUC) of each rSO2 value according to measurement time (overall, initial 5 minutes and 10 minutes) were the highest value of 0.743, 0.724, and 0.739, mean values of 0.724, 0.677 and 0.701 and rSO2 (Changes in values of regional cerebral oxygen) value of 0.722, 0.734 and 0.724, respectively, while all of the initial values had a poor AUC (<0.7) and also were not statistically significant. The optimal cut-off value of each rSO2 values during overall, initial 5 minutes and 10 minutes were the highest value of 26% (sensitivity, 53.9% specificity, 92.3%), 24% (sensitivity, 56.4% specificity, 92.3%), and 30% (sensitivity, 61.5% specificity, 84.6%), mean value of 15.2%, 15.3% and 16%, respectively. None of the patients with a persistent rSO2 <=18% during the overall period achieved ROSC. Initial 5 minutes and 10 minutes cerebral rSO2 values an out-of-hospital-cardiac arrest (OHCA) are a better predictor in deciding the futility of CPR, compared to initial and overall measurements.Copyright © 2023 The Author(s). Published by MRE Press.

Differencies between former smokers and non-smokers during post-Covid period

Previous studies comparing treatment outcomes and the recovery of smokers after COVID 19 infection have yielded contradictory results. The aim of this retrospective study was to compare recovery and the rate of posthospital complications of former long-term smokers (FS) with non-smoking (NS) controls observed in PostCovid out-clinic hospital. We compared 88 FS and 96 NS, who had suffered from moderate to severe Covid-19 pneumonia, and were observed during 1-year follow-up period. The inclusion criteria were positive PCR test for SARS-CoV-2 infection and hospitalization due to acute respiratory failure. We compared lung function tests, blood gas analyses, onset of new symptoms and incidence of thrombotic incidents. Mean age of participants was 64.8+/-11.4 years for NS and 63.8+/-8.8 years for FS. At the beginning of follow-up FS group had significantly lower pulmonary function tests vs NS, including FEV1 (89.9% vs 94.6%, p<0.01);FVC (87.5% vs 94.3%, p< 0.01);DLco (62.3% vs 72.7%, p< 0.01), with a tendency for slower recovery during subsequent examinations. There was no significant difference between two groups regarding blood gas levels, number of reported symptoms and incidence of pulmonary embolism (7 vs 7). According to the results we can conclude that former smokers initially had worse lung function scores and prolonged recovery course. However, there was no significant difference in the number of symptoms and the frequency of thrombotic complications.