ABSTRACT
INTRODUCTION: Intravenous crystalloid fluid resuscitation forms a crucial part of the early intervention bundle for sepsis and septic shock, with the Surviving Sepsis Campaign guidelines recommending a 30 mL/kg fluid bolus within the first hour. Compliance with this suggested target varies in patients with comorbidities such as congestive heart failure, chronic kidney disease and cirrhosis due to concerns regarding iatrogenic fluid overload. However, it remains unclear whether resuscitation with higher fluid volumes puts them at greater risk of adverse outcomes. Thus, this systematic review will synthesise evidence from existing studies to assess the effects of a conservative as compared with a liberal approach to fluid resuscitation in patients at greater perceived risk of fluid overload due to comorbid conditions. METHODS AND ANALYSIS: This protocol was registered on PROSPERO and has been drafted following the checklist of Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols. We will search MEDLINE, MEDLINE Epub Ahead of Print and In-Process, In-Data-Review & Other Non-Indexed Citations, Embase, Embase Classic, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, Web of Science Core Collection, CINAHL Complete and ClinicalTrials.gov. A preliminary search of these databases was performed from their inception to 30 August 2022. The risk of bias and random errors will be assessed using the revised Cochrane risk-of-bias tool for randomised clinical trials and the Newcastle-Ottawa Scale for case-control and cohort studies. If a sufficient number of comparable studies are identified, we will perform a meta-analysis applying random effects model. We will investigate heterogeneity using a combination of visual inspection of the funnel plot as well as the Egger's test. ETHICS AND DISSEMINATION: No ethics approval is required for this study since no original data will be collected. The findings will be disseminated through peer-reviewed publication and conference presentation. PROSPERO REGISTRATION NUMBER: CRD42022348181.
Subject(s)
Sepsis , Shock, Septic , Humans , Shock, Septic/therapy , Systematic Reviews as Topic , Meta-Analysis as Topic , Sepsis/therapy , Administration, IntravenousABSTRACT
Background and objective: To describe the characteristics and the evolution of patients with solid tumours admitted to the ICU and to identify factors associated with hospital mortality and to evaluate three illness severity scores. Material and methods: Descriptive study including 132 patients with solid tumour admitted to the ICU (2010-2016). Demographics and cancer-related data, organ failures, life-supporting therapies and severity scores: APACHE II, SOFA and ICU Cancer Mortality Model (ICMM) were collected. Results: There were 58 patients admitted for medical reasons and 74 for scheduled surgery. The ICU and hospital mortality rate were 12.9% and 19.7%, respectively. The medical reason for admission, the number of organ failures, and the need of life-supporting therapies were significantly associated with a higher mortality (p<0.05). In the logistic regression analysis, the three severity scores: SOFA (OR 1.18, 95% IC 1.14-1.48), APACHE II (OR 1.11, 95% CI 1.09-1.27), and ICMM (OR 1.03, 95% CI 1.02-1.07) were independently associated with a higher mortality (p<0.05). To evaluate the discrimination, the area under the receiver operating characteristics curves (AUROC) were calculated: APACHE II (0.795, 95% CI 0.69-0.9), SOFA (0.77, 95% CI 0.69-0.864) and ICMM (0.794, 95% CI 0.697-0.891). The comparison of AUC ROC after DeLong's test showed no difference between them. Conclusion: Hospital mortality was associated with the type and severity of acute illness. The three severity scores were useful to assess outcome and accurate in the discrimination, but we did not find a significant difference between them
Introducción y objetivo: Describir las características generales y la evolución de los pacientes con tumores sólidos ingresados en una unidad de cuidados intensivos (UCI), identificar los factores asociados a la mortalidad y evaluar el valor pronóstico de 3 escalas de gravedad. Material y métodos: Estudio descriptivo de 132 pacientes con diagnóstico de tumour sólido admitidos en la UCI (2010-2016). Se analizaron los datos demográficos relacionados con el tumour, la disfunción orgánica y las terapias de soporte vital, así como las escalas de gravedad APACHE II, SOFA e ICMM. Resultados: Ingresaron 58 pacientes por causa médica y 74 tras cirugía programada. La tasa de mortalidad en la UCI y hospitalaria fue del 12,9% y 19,7%, respectivamente. La causa médica de ingreso, el número de fallos orgánicos y la necesidad de terapias de soporte vital se asociaron significativamente con mayor mortalidad (p<0,05). En el análisis por regresión logística las 3 escalas evaluadas: SOFA (OR: 1,18; IC 95%: 1,14-1,48), APACHE II (OR: 1,11; IC 95%: 1,09-1,27) e ICMM (OR: 1,03; IC 95%: 1,02-1,07) se asociaron de forma independiente con una mayor mortalidad (p<0,05). Para evaluar la discriminación, se calcularon las AUROC: APACHE II (0,795; CI 95%: 0,69-0,9), SOFA (0,77; CI 95%: 0,69-0,864) e ICMM (0,794; CI 95%: 0,697-0,891). La comparación de las mismas por el test DeLong no mostró diferencias entre los sistemas de puntuación. Conclusiones: La mortalidad hospitalaria se asoció con el tipo y la gravedad de la enfermedad aguda. Las e escalas de gravedad evaluadas fueron igualmente útiles para evaluar el pronóstico, sin mostrar diferencias entre ellas
Subject(s)
Humans , Male , Middle Aged , Aged , Severity of Illness Index , Neoplasms/diagnosis , Intensive Care Units , Prognosis , Patient Acuity , Hospital Mortality , Retrospective Studies , APACHE , Organ Dysfunction ScoresABSTRACT
BACKGROUND AND OBJECTIVE: To describe the characteristics and the evolution of patients with solid tumours admitted to the ICU and to identify factors associated with hospital mortality and to evaluate three illness severity scores. MATERIAL AND METHODS: Descriptive study including 132 patients with solid tumour admitted to the ICU (2010-2016). Demographics and cancer-related data, organ failures, life-supporting therapies and severity scores: APACHE II, SOFA and ICU Cancer Mortality Model (ICMM) were collected. RESULTS: There were 58 patients admitted for medical reasons and 74 for scheduled surgery. The ICU and hospital mortality rate were 12.9% and 19.7%, respectively. The medical reason for admission, the number of organ failures, and the need of life-supporting therapies were significantly associated with a higher mortality (p<0.05). In the logistic regression analysis, the three severity scores: SOFA (OR 1.18, 95% IC 1.14-1.48), APACHE II (OR 1.11, 95% CI 1.09-1.27), and ICMM (OR 1.03, 95% CI 1.02-1.07) were independently associated with a higher mortality (p<0.05). To evaluate the discrimination, the area under the receiver operating characteristics curves (AUROC) were calculated: APACHE II (0.795, 95% CI 0.69-0.9), SOFA (0.77, 95% CI 0.69-0.864) and ICMM (0.794, 95% CI 0.697-0.891). The comparison of AUC ROC after DeLong's test showed no difference between them. CONCLUSION: Hospital mortality was associated with the type and severity of acute illness. The three severity scores were useful to assess outcome and accurate in the discrimination, but we did not find a significant difference between them.
Subject(s)
Hospital Mortality , Intensive Care Units , Neoplasms/mortality , Patient Admission , Severity of Illness Index , APACHE , Aged , Female , Humans , Intensive Care Units/statistics & numerical data , Length of Stay , Life Support Care/methods , Logistic Models , Male , Middle Aged , Neoplasms/drug therapy , Neoplasms/surgery , Organ Dysfunction Scores , ROC Curve , Retrospective StudiesABSTRACT
Spatial receptive fields of neurons in the auditory pathway of the barn owl result from the sensitivity to combinations of interaural time (ITD) and level differences across stimulus frequency. Both the forebrain and tectum of the owl contain such neurons. The neural pathways, which lead to the forebrain and tectal representations of auditory space, separate before the midbrain map of auditory space is synthesized. The first nuclei that belong exclusively to either the forebrain or the tectal pathways are the nucleus ovoidalis (Ov) and the external nucleus of the inferior colliculus (ICx), respectively. Both receive projections from the lateral shell subdivision of the inferior colliculus but are not interconnected. Previous studies indicate that the owl's tectal representation of auditory space is different from those found in the owl's forebrain and the mammalian brain. We addressed the question of whether the computation of spatial cues in both pathways is the same by comparing the ITD tuning of Ov and ICx neurons. Unlike in ICx, the relationship between frequency and ITD tuning had not been studied in single Ov units. In contrast to the conspicuous frequency independent ITD tuning of space-specific neurons of ICx, ITD selectivity varied with frequency in Ov. We also observed that the spatially tuned neurons of Ov respond to lower frequencies and are more broadly tuned to ITD than in ICx. Thus there are differences in the integration of frequency and ITD in the two sound-localization pathways. Thalamic neurons integrate spatial information not only within a broader frequency band but also across ITD channels.
