Optimizing cellulose fraction for enhanced utility: Comparative pre-treatment of Agave tequilana Weber var. blue bagasse fiber for sustainable applications.

In recent decades, natural fibers have emerged as an alternative to synthetic fibers due to their renewable nature, lower environmental impact, and comparable strength properties. Agave bagasse, a byproduct of agave juice extraction in Mexico, stands out for its potential in various industrial applications, notably biocomposite production. Bagasse is rich in cellulose, along with hemicellulose and lignin. Cellulose is the most suitable to be converted into valuable products, and it is versatile, renewable, and biodegradable. An effective pre-treatment is crucial to enrich its fraction. This study aims to determine the optimal pre-treatment conditions for the agave bagasse. Three different pre-treatments were tested, acid (H2SO4), enzymatic (Cellic® HTec2 enzymatic preparation), and sequence of acid-enzymatic (sulfuric acid and Cellic® HTec2), to determine which pre-treatment got the optimal cellulose fraction increase. The acid pre-treatment was conducted over three time ranges (5, 10, and 15 min) at different acid concentrations (1%, 1.5%, and 2%). Enzymatic reactions were conducted over 24 h, testing three different enzyme concentrations (1.5%, 3%, 4.5%). The sequential pre-treatment utilized the optimal conditions derived from the acid experiments (1.5% H2SO4 for 10 min), followed by enzymatic reactions carried out over three different durations (6, 12, and 24 h). The findings revealed that a 1.5% acid concentration applied for 10 min was the most efficient pre-treatment method. This pre-treatment resulted in a 1.9-fold increase in the cellulose fraction while reducing hemicellulose content by 30%. The hemicellulose reduction was confirmed through Fourier Transform IR spectroscopy (FTIR) analysis, complemented by scanning electron microscopy (SEM) observations highlighting physical alterations in the fiber structure. Furthermore, thermogravimetric analysis (TGA) demonstrated improved thermal stability, suggesting potential use in biocomposites. Future research should evaluate the environmental impact of optimized pre-treatment methods for agave bagasse.

Influence of families and other adult support on HIV prevention outcomes among black men who have sex with men.

BACKGROUND: Prior research has consistently shown that the involvement of families plays a vital role in reducing risk behaviors, such as engaging in condomless sex, and promoting HIV prevention behaviors among young Black men who have sex with men (YBMSM). With the aim of expanding the existing knowledge, this study aimed to examine the specific influence of families and other supportive adults in facilitating casual condom use, partner condom use, HIV testing, and preexposure prophylaxis (PrEP) utilization among young Black MSM. METHODS: A sample of YBMSM aged 18-29 years (N = 400) was collected online. We used a path analysis to examine the influence of family factors on PrEP stigma and PrEP use. Respondents were recruited from December 1, 2021, to January 31, 2022. We used a path analysis to examine the direct and indirect effects of family factors on PrEP use through HIV testing and encouraging condom use. RESULTS: Among BMSM, other adult support was positive and directly associated with condom use by both casual partners (ß = 0.04, p < .05) and partners (ß = 0.17, p < .01). Condom use by casual partners was negative and was directly associated with HIV testing (ß = - 0.15, p < .01). CONCLUSION: The primary aim of this research was to examine the influence of family and adult support on HIV prevention behaviors among young Black MSM, including condom use, HIV testing, and PrEP use. Our findings highlight the significance of implementing interventions that incorporate families and other supportive adults to enhance the engagement of young Black MSM in HIV prevention behaviors.

Examining developmental assets of young Black sexual gender minority males in preventing suicidal behaviors.

Black gay and bisexual male adolescents and young adults (BGBMA/YA) are at higher risk for suicidal outcomes given their minoritized and stigmatized identities at the intersection of race and sexual orientation. This study explores key developmental assets, including family support and family communication, and their role in preventing depression symptoms and suicidal outcomes among BGBMA/YA. A cross-sectional survey was administered to participants (N = 400, Mage = 23.46, SD = 2.59) recruited through Amazon M-Turk, community-based organizations, and social media sites. A path analysis was conducted to examine associations among external assets (family support, communication about sex and drugs with parents, open family communication), depression symptoms, and suicidal attempts and plan to die by suicide. About 28 % of respondents reported a suicide attempt in the past 12 months. Depression symptoms and communication about sex and drugs with parents were positively associated with plan to die by suicide. Family support was negatively associated with depression symptoms. Depression symptoms were positively associated with suicide attempts. Family support was indirectly and negatively associated with suicide attempts. Suggestions for future research and policy implications are discussed.

Towards the personalization of septic shock resuscitation: the fundamentals of ANDROMEDA-SHOCK-2 trial.

Septic shock is a highly lethal and prevalent disease. Progressive circulatory dysfunction leads to tissue hypoperfusion and hypoxia, eventually evolving to multiorgan dysfunction and death. Prompt resuscitation may revert these pathogenic mechanisms, restoring oxygen delivery and organ function. High heterogeneity exists among the determinants of circulatory dysfunction in septic shock, and current algorithms provide a stepwise and standardized approach to conduct resuscitation. This review provides the pathophysiological and clinical rationale behind ANDROMEDA-SHOCK-2, an ongoing multicenter randomized controlled trial that aims to compare a personalized resuscitation strategy based on clinical phenotyping and peripheral perfusion assessment, versus standard of care, in early septic shock resuscitation.

Perspectives and thoughts of pregnant women and new mothers living with HIV receiving peer support: A mixed studies systematic review.

AIM: The aim of this study was to systematically consolidate evidence on perspectives and thoughts of women living with HIV regarding the peer support they have encountered during pregnancy and after childbirth. DESIGN: Mixed studies systematic review. DATA SOURCES: PubMed, EMBASE, Cochrane, PsycINFO, CINAHL, Scopus and ProQuest were sourced from 1981 to January 2022. METHODS: A convergent qualitative synthesis approach was used to analyse the data. Quality appraisal was performed using the Mixed Methods Appraisal Tool. RESULTS: A total of 12 studies were included, involving 1596 pregnant women and 1856 new mothers living with HIV. An overarching theme, 'From One Mother to Another: The Supportive Journey of Pregnant Women and New Mothers Living with HIV', and two themes were identified: (1) Emotional support buddies and extended networks and (2) Link bridge to healthcare support and self-empowerment. CONCLUSION: Peer support played an indispensable role in the lives of women living with HIV and served as a complementary support system to professional and family support. IMPACT: What problem did the study address? Pregnant women and new mothers living with HIV face preconceived stigma and discrimination. What were the main findings? Peer support was perceived to be beneficial in enhancing emotional support among women living with HIV and was well-accepted by them. Where and on whom will the research have an impact? Healthcare providers and community social workers could develop or enhance peer support educational programmes tailored to pregnant women and new mothers living with HIV. Policymakers and administrators can leverage public awareness, advocacy and political will to formulate and implement policies and campaigns aimed at fostering awareness and receptivity towards peer support interventions. REPORTING METHOD: Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA). PATIENT OR PUBLIC CONTRIBUTION: No patient or public contribution.

Slow-release microencapsulates containing nanoliposomes for bioremediation of soil hydrocarbons contaminated.

Encapsulation and nutrient addition in bacterial formulations have disadvantages concerning cell viability during release, storage, and under field conditions. Then, the objective of this work was to encapsulate a bacterial consortium with hydrocarbon-degrading capacities in different matrices composed of cross-linked alginate/ polyvinyl alcohol /halloysite beads (M1, M2, and M3) containing nanoliposomes loaded with or without nutrients and evaluate their viability and release in a liquid medium, and soil (microcosmos). Also, evaluate their capacity to remove total petroleum hydrocarbons (TPH) for 165 days and matrices characterization. The encapsulate consortium showed a quick adaptation to contaminated soil and a percentage of removal (PR) of TPH up to 30% after seven days. All the matrices displayed a PR of up to 90% after 165 days. The matrix M2 displayed significant resistance to degradation and higher cell viability with a PR of 94%. This result supports the encapsulation of bacteria in a sustainable matrix supplemented with nutrients as a well-looked strategy for improving viability and survival and, therefore, enhancing their effectiveness in the remediation of hydrocarbon-contaminated soils.

Methodology optimization to quantify microplastic presence in planktonic copepods, chaetognaths and fish larvae.

Two of the groups most impacted by microplastics (MPs) are zooplankton and fish larvae, either through MPs ingestion or absorption. Although there has been an increase of studies focusing on MPs ingestion by these organisms, there is still no standardized methodology for the quantification of MPs present in plankton. For example, some reagents normally used to digest plankton and recover MPs appear adversely to affect some plastic characteristics. This can potentially lead to underestimating the amount and types of MPs present in the organisms analyzed. Hence, this work aimed to optimize a methodology to quantify MPs present in plankton, namely zooplankton and fish larvae, and ensuring MPs integrity. Hence, the planktonic organism tissues were digested using 30% (v/v) H2O2 solution at different temperatures and incubation periods while preserving the integrity and polymer characteristics of 13 types of MPs. MPs' characteristics were register before and after the tests, by visual inspection and Fourier Transform Infrared Spectroscopy (FTIR) analysis, to evaluate the integrity and features of MPs. With this methodology, MPs recovery was above 85% for all types of plastic tested. The proposed methodology is a rapid protocol, with a maximum of 7 h of incubation, that ensures simultaneously the full digestion of the organism tissues and the complete preservation of all the plastic characteristics, namely color, size and polymer type.•A methodology was optimized to quantify microplastics present in zooplankton (copepods, chaetognaths and fish larvae).•Thirteen types of microplastics (fibers and fragments of different polymers) were used to test the efficiency of the methodology ensuring the maintenance of the integrity of plastics.•With this methodology, microplastic recovery was above 85% for all the types of microplastic tested and no changes in their characteristics were observed.

Structure and size-dependent vibrational and thermal properties of Ni clusters: A systematic ab initio approach.

There is scarce information on the vibrational and thermal properties of small Ni clusters. Here, the outcomes of ab initio spin-polarized density functional theory calculations on the size and geometry effects upon the vibrational and thermal properties of Nin (n = 13 and 55) clusters, are discussed. For theses clusters a comparison is presented between the closed shell symmetric octahedral (Oh) and the icosahedral (Ih) geometries. The results indicate that the Ih isomers are lower in energy. Besides, ab initio molecular dynamics runs at T = 300K show that Ni13 and Ni55 clusters transform from their initial Oh geometries towards the corresponding Ih ones. For Ni13, we also consider the lowest energy less symmetric layered 1-3-6-3 structure, and the cuboid, recently observed experimentally for Pt13, which is competitive in energy but is unstable, as phonon analysis reveals. We calculate their vibrational density of states (νDOS) and heat capacity, and compare with the Ni FCC bulk counterpart. The characteristic features of the νDOS curves of these clusters are interpreted in terms of the clusters' sizes, the interatomic distance contractions, the bond order values as well as the internal pressure and strains of the clusters. We find that the softest possible frequency of the clusters is size and structure-dependent, being the smallest for the Oh ones. We identify mostly shear, tangential type displacements involving mainly surface atoms for the lowest frequency of the spectra of both Ih and Oh isomers. For the maximum frequencies of these clusters the central atom shows anti-phase movements against groups of nearest neighbor atoms. An excess of heat capacity at low temperatures with respect to the bulk is found, while at high temperatures a constant limiting value, close but lower to the Dulong and Petit value, is determined.

Insulin decreases epileptiform activity in rat layer 5/6 prefrontal cortex in vitro.

Accumulating evidence indicates that insulin-mediated signaling in the brain may play important roles in regulating neuronal function. Alterations to insulin signaling are associated with the development of neurological disorders including Alzheimer's disease and Parkinson's disease. Also, hyperglycemia and insulin resistance have been associated with seizure activity and brain injury. In recent work, we found that insulin increased inhibitory GABAA -mediated tonic currents in the prefrontal cortex (PFC). In this work, we used local field potential recordings and calcium imaging to investigate the effect of insulin on seizure-like activity in PFC slices. Seizure-like events (SLEs) were induced by perfusing the slices with magnesium-free artificial cerebrospinal fluid (ACSF) containing the proconvulsive compound 4-aminopyridine (4-AP). We found that insulin decreased the frequency, amplitude, and duration of SLEs as well as the synchronic activity of PFC neurons evoked by 4-AP. These insulin effects were mediated by the PI3K/Akt signaling pathway and mimicked by gaboxadol (THIP), a δ GABAA receptor agonist. The effect of insulin on the number of SLEs was partially blocked by L-655,708, an inverse agonist with high selectivity for GABAA receptors containing the α5 subunit. Our results suggest that insulin reduces neuronal excitability by an increase of GABAergic tonic currents. The physiological relevance of these findings is discussed.

Examining the Role of Autonomy Support, Goal Setting, and Care Coordination Quality on HIV PrEP Adherence in Black Men Who Have Sex with Men: HPTN 073.

Autonomy support is a concept that is derived from self-determination theory. Autonomy refers to the freedom to act as one chooses. The current study aimed to examine if autonomy support was associated with dried blood spot validated pre-exposure prophylaxis (PrEP) adherence, and whether the association was mediated by PrEP adherence goal setting and progress toward PrEP adherence goals. Our sample was drawn from Black men who have sex with men (MSM) from across three cities (Chapel Hill, NC; Los Angeles, CA; and Washington, DC) in the United States between February 2013 and September 2014. We used logistic regression to evaluate associations between study variables and path analysis to test mediation effects. Participants were, on average, 28 [standard deviation (SD) = 1.12] years old and 25% were unemployed. We found that MSM who experienced high autonomy support were more likely to adhere to PrEP [odds ratio (OR) = 1.17; 95% confidence interval: 1.00-1.38]. MSM who set PrEP adherence goals were more likely to adhere to PrEP. Moreover, MSM who reported making progress toward their goals were also more likely to adhere to PrEP. Finally, client perception of coordination quality enhanced the magnitude of the association between goal setting and goal progress and the effect size of goal progress on PrEP adherence. Autonomy support, goal setting, goal monitoring/evaluation, and care coordination quality influenced PrEP adherence among Black MSM. Our findings indicate that while it is important to set goals for PrEP adherence, goal setting may need to be accompanied by progress monitoring to achieve the maximal effect.

A Longitudinal Study on the Influence of Sibling Support and HIV Testing Among Black Youth.

BACKGROUND: Healthy familial relationships have been noted as protective against HIV infection among the Black youth. Previous studies have indicated that sibling relationships are important over the life course and may have a significant influence on health behaviors and health promotion. However, the specific interaction between sibling relationships, HIV prevention, and HIV testing is underexplored. This longitudinal study aims to examine the role of sibling relationships, healthcare providers, and other contextual factors on HIV testing. METHODS: This study was conducted via the secondary analysis of data from the National Longitudinal Study of Adolescent to Adult Health evaluating the health of adolescents. The analysis included Black youth from Wave 1 and 3 (N = 509) with a mean age of 16 years. A multinomial analysis evaluated the association of sibling relationships on HIV testing. RESULTS: In Wave 1, youth who reported having love for their sibling were 1.90 (p < .001) times more likely to test for HIV infection than those who reported no love for their sibling. In Wave 1 and 3, the youth who reported no sibling support was 89% (p < .001) less likely to get tested for HIV more than once. CONCLUSION: This study's findings show that sibling relationships have a significant positive influence on HIV testing among Black youth, and they are a protective factor against HIV transmission. These findings are essential in structuring HIV testing programs and interventions tailored to Black youth.

Implementation of Client-Centered Care Coordination for HIV Prevention with Black Men Who Have Sex with Men: Activities, Personnel Costs, and Outcomes-HPTN 073.

BACKGROUND: Black men who have sex with men (MSM) experience disproportionate rates of HIV infection in the USA, despite being no more likely to engage in sexual risk behaviors than other MSM racial/ethnic groups. HIV pre-exposure prophylaxis (PrEP) has been shown to reduce risk of HIV acquisition; however, rates of PrEP use among Black MSM remain low. Clinical, psychosocial, and structural factors have been shown to impact PrEP use and adherence among Black MSM. Care coordination of HIV prevention services has the potential to improve PrEP use and adherence for Black MSM, as it has been shown to improve HIV-related care outcomes among people living with HIV. METHODS: Client-centered care coordination (C4) is a multi-level intervention designed to address clinical, psychosocial, and structural barriers to HIV prevention services for Black MSM within HPTN 073, a PrEP demonstration project among Black MSM in three cities in the USA. The current study examined the implementation process of C4, specifically investigating the activities, cost, time, and outcomes associated with the C4 intervention. RESULTS: On average, participants engaged in five care coordination encounters. The vast majority of care coordination activities were conducted by counselors, averaging 30 min per encounter. The cost of care coordination was relatively low with a mean cost of $8.70 per client encounter. CONCLUSION: Although client-centered care coordination was initially implemented in well-resourced communities with robust HIV research and service infrastructure, our findings suggest that C4 can be successfully implemented in resource constrained communities.

Strategies That Promote Equity in COVID-19 Vaccine Uptake for Latinx Communities: a Review.

Latinx people in the USA have had a high burden of COVID-19 cases, hospitalizations, and death, yet rates of COVID-19 vaccine uptake among Latinx individuals were lower than other demographic groups. Effective strategies to promote vaccine uptake among Latinx communities are needed. We conducted a rapid review of information available between December 2020 and August 2021. Our search strategy used PUBMED, Google, and print media with a prescribed set of definitions and search terms for two reasons: there were limited peer-reviewed studies during early period of roll-out and real-time perspectives were crucially needed. Analyses included expert opinion, descriptions of project implementation and outcomes. We found that approaches varied. An integral component with all interventions was the use of local Latinx community leaders. They could understand the nuances of vaccine hesitancy, access issues, and structural inequities experienced by Latinx communities. The mechanisms for messaging included the use of social media, radio, and promotora outreach workers to disseminate information about COVID-19 vaccines and counter misinformation. Phone hotlines for scheduling were reported. Promoting access involved pop-up clinics at shopping malls, farmer's markets, and nearby grocery stores which were popularly used to vaccinate Latinx community members. Other practices included limited registration requirements, avoiding online-only communication, and training staff to provide specialized support to Latinx clients. This rapid review provides a basis for developing strategic implementation to increase COVID-19 vaccine uptake in this ongoing pandemic and planning to promote health equity for future bio-events and health crises.

Assessing the Influence of Child Sexual Behavior on Depression among Black SMM in the Southeastern United States.

Limited studies have examined the associations between child sexual abuse (CSA) and depression among Black sexual minority men (SMM) in the Southeastern United States (US). As, such, the current study examined the critical gap in understanding the impact of CSA on Black SMM's mental health. Specifically, we tested the associations between contextual CSA factors and depression among a large population-based sample of Black SMM living in two cities in the Southern US. Data were obtained from the MARI Study, a sample of Black SMM ages 18-66 years, recruited from the Jackson, MS and Atlanta, GA metropolitan areas (n = 507). Depression was assessed using the 9-item CES-D scale. We conducted multivariable regression analyses to examine the association between depression with history of CSA and other child sexual-related variables (i.e., age of perpetrator and age of sexual abuse), controlling for key confounders. Our results indicated that CSA (ß = 0.14, p < 0.001) was positively associated with depression. Our results also indicated that Black SMM who reported being sexually abused at the ages of 6 to 10 (ß = 0.30, p < 0.01) and 16 to 18 (ß = 0.25, p < 0.05) were positively associated with depression. These findings suggest that there is a need to provide culturally and safe mental health services in the Southeastern US for CSA survivors.

Community-Engaged Intervention Mapping for Cardiovascular Disease Prevention in Black and Latinx Sexual Minority Men With HIV in New York City: Protocol for a Web-Based Mixed Methods Study.

BACKGROUND: Approximately every 37 seconds, someone in the United States dies of cardiovascular disease (CVD). It has emerged as an important contributor to morbidity among persons with HIV. Black and Latinx sexual minority men are at higher risk of both HIV and CVD when compared to heterosexual, nonethnic or minority men. Persons with HIV have a 1.5 to 2-times risk of having CVD than do HIV-negative persons. Data suggest that by the year 2030, an estimated 78% of persons with HIV will have CVD. The relationship between HIV and CVD in marginalized populations is not well understood because overall awareness of HIV and CVD as comorbid conditions is low, which further heightens risk. This has created a critically pressing issue affecting underrepresented ethnic and racial populations with HIV and requires immediate efforts to mitigate risk. OBJECTIVE: The purpose of this formative, mixed methods study is to use a community-engaged approach to map a behavioral intervention for CVD prevention in Black and Latinx sexual minority men with HIV in New York City. METHODS: Literature reviews focused on behavioral prevention studies using intervention mapping. In Aim 1, we will use qualitative interviews with HIV program managers and community members to understand facilitators and barriers to CVD prevention, chronic illnesses of concern, and early design elements needed for a web-based CVD prevention intervention. In Aim 2, we will conduct qualitative interviews and administer cross-sectional validated surveys with 30 Black and Latinx sexual minority men with HIV. We will assess illness perceptions of chronic conditions, such as HIV, hypertension, and diabetes. A total of 40 participants (program managers and community members) for Aims 1 and 2 will be enrolled to participate. To develop the protocol, we will follow steps 1 through 3 (needs assessment, change objectives, implementation strategy) of intervention mapping, using mixed methods. RESULTS: The study was approved by New York University Institutional Review Board in February 2021 (IRB-FY2021-4772) and also by the Yale University Institutional Review Board in June 2022 (#2000031577). We anticipate completing data collection on or before December 2022. Early analyses suggested concerns about illnesses outside of HIV and associated comorbid conditions, such as COVID-19 and monkeypox. Additionally, we noted a strong interest in using a web-based platform for CVD prevention education. CONCLUSIONS: Web-based, behavioral, CVD prevention interventions may be promising modalities to closing the cardiovascular health disparities gap in Black and Latinx sexual minority men with HIV by extending the reach of prevention interventions using community-informed approaches and technological modalities that have been underused in this population. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR1-10.2196/41602.

Neumonía asociada a ventilación mecánica en pacientes con neumonía grave por SARS-CoV-2 / Ventilation associated pneumonia in patients with severe SARS-CoV-2 pneumonia

Introducción: Los pacientes con COVID-19 pueden evolucionar hacia una falla respiratoria aguda grave y requerir ventilación mecánica invasiva (VMI). La complicación más frecuente en estos pacientes es la neumonía asociada a ventilación mecánica (NAVM), con incidencias reportadas más altas que en la época pre-COVID. El objetivo de este estudio es reportar la incidencia, tasa de incidencia y microbiología de la NAVM en pacientes en VMI con COVID-19. Métodos: Se incluyeron a todos los pacientes con neumonía grave y PCR (+) para SARS-CoV-2 que ingresaron y requirieron VMI entre marzo y julio del 2021 en el Instituto Nacional del Tórax (INT). Se recolectaron datos demográficos, clínicos y de laboratorio de la ficha electrónica. Se registraron y caracterizaron los casos de neumonía asociado a la ventilación mecánica. Resultados: Se incluyeron 112 pacientes de los cuales el 42,8% presentó NAVM, con una tasa de incidencia de 28,8/1.000 días de VMI. Los microorganismos aislados más frecuentes fueron Klebsiella pneumoniae (29,6%), Staphylococcus aureus (21,8%) y Pseudomonas aeruginosa (12,5%). Los pacientes que cursaron NAVM estuvieron casi el doble de tiempo en VMI, pero sin presentar aumento de la mortalidad. Conclusión: La NAVM es una complicación frecuente en los pacientes con neumonía grave asociada a COVID-19. La microbiología de estas entidades no ha cambiado respecto a la era pre-pandémica. Estos resultados cobran relevancia en el inicio y suspensión de antibióticos en este grupo de pacientes.

Introduction: Patients with COVID-19 can progress to severe acute respiratory failure and require invasive mechanical ventilation (IMV). The most frequent complication in these patients is ventilator-associated pneumonia (VAP), with higher reported incidences than in the pre-COVID era. The objective of this study is to report the prevalence, incidence rate and microbiology of VAP in patients on IMV with COVID-19. Methods: Patients with severe pneumonia and PCR (+) for SARS-CoV-2 who were admitted to IMV between march and july 2021 at the Instituto Nacional del Tórax (Chile) were included. Demographic, clinical and laboratory data from electronic records were collected. Cases of pneumonia associated with mechanical ventilation were recorded and characterized. Results: 112 patients were included, 42.8% of them presented VAP with an incidence rate of 28.8/1,000 IMV days. The most frequent isolated microorganisms were Klebsiella pneumoniae (29.6%), Staphylococcus aureus (21.8%) and Pseudomonas aeruginosa (12.5%). Patients who underwent VAP spent almost twice as long on IMV, although they had not increase in mortality. Conclusion: VAP is a common complication in patients with severe pneumonia associated with COVID-19. The microbiology of these entities has not changed from the pre-pandemic era. These results become relevant in the initiation and suspension of antibiotics in this group of patients.