You searched for:"Gilberto Friedman"
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Original Article
Association of biomarkers with successful ventilatory weaning in COVID-19 patients: an observational study
Crit Care Sci. 2024;36:e20240158en
Abstract
Original ArticleAssociation of biomarkers with successful ventilatory weaning in COVID-19 patients: an observational study
Crit Care Sci. 2024;36:e20240158en
DOI 10.62675/2965-2774.20240158-pt
Views11ABSTRACT
Objective:
To evaluate the association of biomarkers with successful ventilatory weaning in COVID-19 patients.
Methods:
An observational, retrospective, and single-center study was conducted between March 2020 and April 2021. C-reactive protein, total lymphocytes, and the neutrophil/lymphocyte ratio were evaluated during attrition and extubation, and the variation in these biomarker values was measured. The primary outcome was successful extubation. ROC curves were drawn to find the best cutoff points for the biomarkers based on sensitivity and specificity. Statistical analysis was performed using logistic regression.
Results:
Of the 2,377 patients admitted to the intensive care unit, 458 were included in the analysis, 356 in the Successful Weaning Group and 102 in the Failure Group. The cutoff points found from the ROC curves were −62.4% for C-reactive protein, +45.7% for total lymphocytes, and −32.9% for neutrophil/lymphocyte ratio. These points were significantly associated with greater extubation success. In the multivariate analysis, only C-reactive protein variation remained statistically significant (OR 2.6; 95%CI 1.51 – 4.5; p < 0.001).
Conclusion:
In this study, a decrease in C-reactive protein levels was associated with successful extubation in COVID-19 patients. Total lymphocytes and the neutrophil/lymphocyte ratio did not maintain the association after multivariate analysis. However, a decrease in C-reactive protein levels should not be used as a sole variable to identify COVID-19 patients suitable for weaning; as in our study, the area under the ROC curve demonstrated poor accuracy in discriminating extubation outcomes, with low sensitivity and specificity.
Keywords:Airway extubationartificialBiomarkersCoronavirus infectionsCOVID-19Intensive care unitsintratrachealIntubationRespirationVentilator weaningSee more -
Original Article
Can central-venous oxygen saturation be estimated from tissue oxygen saturation during a venous occlusion test?
Rev Bras Ter Intensiva. 2022;34(2):255-261
Abstract
Original ArticleCan central-venous oxygen saturation be estimated from tissue oxygen saturation during a venous occlusion test?
Rev Bras Ter Intensiva. 2022;34(2):255-261
DOI 10.5935/0103-507X.20220023-en
Views1See moreABSTRACT
Objective:
To test whether tissue oxygen saturation (StO2) after a venous occlusion test estimates central venous oxygen saturation (ScvO2).
Methods:
Observational study in intensive care unit patients. Tissue oxygen saturation was monitored (InSpectra Tissue Spectrometer Model 650, Hutchinson Technology Inc., MN, USA) with a multiprobe (15/25mm) in the thenar position. A venous occlusion test in volunteers was applied in the upper arm to test the tolerability and pattern of StO2 changes during the venous occlusion test. A sphygmomanometer cuff was inflated to a pressure 30mmHg above diastolic pressure until StO2 reached a plateau and deflated to 0mmHg. Tissue oxygen saturation parameters were divided into resting StO2 (r-StO2) and minimal StO2 (m-StO2) at the end of the venous occlusion test. In patients, the cuff was inflated to a pressure 30mmHg above diastolic pressure for 5 min (volunteers’ time derived) or until a StO2 plateau was reached. Tissue oxygen saturation parameters were divided into r-StO2, m-StO2, and the mean time that StO2 reached ScvO2. The StO2 value at the mean time was compared to ScvO2.
Results:
All 9 volunteers tolerated the venous occlusion test. The time for tolerability or the StO2 plateau was 7 ± 1 minutes. We studied 22 patients. The mean time for StO2 equalized ScvO2 was 100 sec and 95 sec (15/25mm probes). The StO2 value at 100 sec ([100-StO2] 15mm: 74 ± 7%; 25mm: 74 ± 6%) was then compared with ScvO2 (75 ± 6%). The StO2 value at 100 sec correlated with ScvO2 (15 mm: R2 = 0.63, 25mm: R2 = 0.67, p < 0.01) without discrepancy (Bland Altman).
Conclusion:
Central venous oxygen saturation can be estimated from StO2 during a venous occlusion test.
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Original Article
Resuscitation fluid practices in Brazilian intensive care units: a secondary analysis of Fluid-TRIPS
Rev Bras Ter Intensiva. 2021;33(2):206-218
Abstract
Original ArticleResuscitation fluid practices in Brazilian intensive care units: a secondary analysis of Fluid-TRIPS
Rev Bras Ter Intensiva. 2021;33(2):206-218
DOI 10.5935/0103-507X.20210028
Views1See moreAbstract
Objective:
To describe fluid resuscitation practices in Brazilian intensive care units and to compare them with those of other countries participating in the Fluid-TRIPS.
Methods:
This was a prospective, international, cross-sectional, observational study in a convenience sample of intensive care units in 27 countries (including Brazil) using the Fluid-TRIPS database compiled in 2014. We described the patterns of fluid resuscitation use in Brazil compared with those in other countries and identified the factors associated with fluid choice.
Results:
On the study day, 3,214 patients in Brazil and 3,493 patients in other countries were included, of whom 16.1% and 26.8% (p < 0.001) received fluids, respectively. The main indication for fluid resuscitation was impaired perfusion and/or low cardiac output (Brazil: 71.7% versus other countries: 56.4%, p < 0.001). In Brazil, the percentage of patients receiving crystalloid solutions was higher (97.7% versus 76.8%, p < 0.001), and 0.9% sodium chloride was the most commonly used crystalloid (62.5% versus 27.1%, p < 0.001). The multivariable analysis suggested that the albumin levels were associated with the use of both crystalloids and colloids, whereas the type of fluid prescriber was associated with crystalloid use only.
Conclusion:
Our results suggest that crystalloids are more frequently used than colloids for fluid resuscitation in Brazil, and this discrepancy in frequencies is higher than that in other countries. Sodium chloride (0.9%) was the crystalloid most commonly prescribed. Serum albumin levels and the type of fluid prescriber were the factors associated with the choice of crystalloids or colloids for fluid resuscitation.
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Original Article
Association of uteroglobin-related protein 1 with smoke inhalation injury severity
Rev Bras Ter Intensiva. 2021;33(2):276-281
Abstract
Original ArticleAssociation of uteroglobin-related protein 1 with smoke inhalation injury severity
Rev Bras Ter Intensiva. 2021;33(2):276-281
DOI 10.5935/0103-507X.20210035
Views1See moreABSTRACT
Objective:
To evaluate serum uteroglobin-related protein 1 expression early after smoke inhalation injuries and its association with the severity of inhalation injury in burned patients.
Methods:
Smoke or chemical inhalation injury is associated with morbidity and mortality. The consequences of inhalation result from an inflammatory response. Uteroglobin-related protein 1 is an anti-inflammatory protein and may improve lung inflammation. We hypothesized that uteroglobin-related protein 1 levels could reflect disease severity and predict outcome in patients with inhalation injury. Sixteen patients diagnosed with acute respiratory distress syndrome secondary to smoke inhalation injury were prospectively included in the study. Plasma was collected upon intensive care unit admission and within 24 hours of the inhalation injury. Bronchoscopies were carried out in all patients to assess the severity of inhalation injury within 72 hours. Uteroglobin-related protein 1 plasma levels were determined in duplicate with enzyme-linked immunosorbent assay.
Results:
The mean age was 23 ± 5 years, and the inhalation injury distribution was as follows: three of grade 1, four of grade 2, and nine of grade 3. The level of uteroglobin-related protein 1 was related to inhalation severity (grade 1: 0.389 ± 0.053 arbitrary units versus grade 2: 0.474 ± 0.0423 arbitrary units versus grade 3: 0.580 ± 0.094 arbitrary units; p = 0.007).
Conclusion:
Plasma levels of uteroglobin-related protein 1 are associated with the degree of lung inhalation injury.
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Original Article
Hemodynamically stable oliguric patients usually do not respond to fluid challenge
Rev Bras Ter Intensiva. 2020;32(4):564-570
Abstract
Original ArticleHemodynamically stable oliguric patients usually do not respond to fluid challenge
Rev Bras Ter Intensiva. 2020;32(4):564-570
DOI 10.5935/0103-507X.20200094
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Objective:
To evaluate renal responsiveness in oliguric critically ill patients after a fluid challenge.
Methods:
We conducted a prospective observational study in one university intensive care unit. Patients with urine output < 0.5mL/kg/h for 3 hours with a mean arterial pressure > 60mmHg received a fluid challenge. We examined renal fluid responsiveness (defined as urine output > 0.5mL/kg/h for 3 hours) after fluid challenge.
Results:
Forty-two patients (age 67 ± 13 years; APACHE II score 16 ± 6) were evaluated. Patient characteristics were similar between renal responders and renal nonresponders. Thirteen patients (31%) were renal responders. Hemodynamic or perfusion parameters were not different between those who did and those who did not increase urine output before the fluid challenge. The areas under the receiver operating characteristic curves were calculated for mean arterial pressure, heart rate, creatinine, urea, creatinine clearance, urea/creatinine ratio and lactate before the fluid challenge. None of these parameters were sensitive or specific enough to predict reversal of oliguria.
Conclusion:
After achieving hemodynamic stability, oliguric patients did not increase urine output after a fluid challenge. Systemic hemodynamic, perfusion or renal parameters were weak predictors of urine responsiveness. Our results suggest that volume replacement to correct oliguria in patients without obvious hypovolemia should be done with caution.
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Original Article
Time to clearance of abdominal septic focus and mortality in patients with sepsis
Rev Bras Ter Intensiva. 2020;32(2):245-250
Abstract
Original ArticleTime to clearance of abdominal septic focus and mortality in patients with sepsis
Rev Bras Ter Intensiva. 2020;32(2):245-250
DOI 10.5935/0103-507X.20200029
Views0See moreABSTRACT
Objective:
To assess the relationship between time to focus clearance and hospital mortality in patients with sepsis and septic shock.
Methods:
This was an observational, single-center study with a retrospective analysis of the time to clearance of abdominal septic focus. Patients were classified according to the time to focus clearance into an early (≤ 12 hours) or delayed (> 12 hours) group.
Results:
A total of 135 patients were evaluated. There was no association between time to focus clearance and hospital mortality (≤ 12 hours versus > 12 hours): 52.3% versus 52.9%, with p = 0.137.
Conclusion:
There was no difference in hospital mortality among patients with sepsis or septic shock who had an infectious focus evacuated before or after 12 hours after the diagnosis of sepsis.
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Original Article
Epidemiology and outcome of high-surgical-risk patients admitted to an intensive care unit in Brazil
Rev Bras Ter Intensiva. 2020;32(1):17-27
Abstract
Original ArticleEpidemiology and outcome of high-surgical-risk patients admitted to an intensive care unit in Brazil
Rev Bras Ter Intensiva. 2020;32(1):17-27
DOI 10.5935/0103-507X.20200005
Views1ABSTRACT
Objective:
To define the epidemiological profile and the main determinants of morbidity and mortality in noncardiac high surgical risk patients in Brazil.
Methods:
This was a prospective, observational and multicenter study. All noncardiac surgical patients admitted to intensive care units, i.e., those considered high risk, within a 1-month period were evaluated and monitored daily for a maximum of 7 days in the intensive care unit to determine complications. The 28-day postoperative, intensive care unit and hospital mortality rates were evaluated.
Results:
Twenty-nine intensive care units participated in the study. Surgeries were performed in 25,500 patients, of whom 904 (3.5%) were high-risk (95% confidence interval – 95%CI 3.3% – 3.8%) and were included in the study. Of the participating patients, 48.3% were from private intensive care units, and 51.7% were from public intensive care units. The length of stay in the intensive care unit was 2.0 (1.0 – 4.0) days, and the length of hospital stay was 9.5 (5.4 – 18.6) days. The complication rate was 29.9% (95%CI 26.4 – 33.7), and the 28-day postoperative mortality rate was 9.6% (95%CI 7.4 – 12.1). The independent risk factors for complications were the Simplified Acute Physiology Score 3 (SAPS 3; odds ratio – OR = 1.02; 95%CI 1.01 – 1.03) and Sequential Organ Failure Assessment Score (SOFA) on admission to the intensive care unit (OR = 1.17; 95%CI 1.09 – 1.25), surgical time (OR = 1.001, 95%CI 1.000 – 1.002) and emergency surgeries (OR = 1.93, 95%CI, 1.10 – 3.38). In addition, there were associations with 28-day mortality (OR = 1.032; 95%CI 1.011 – 1.052), SAPS 3 (OR = 1.041; 95%CI 1.107 – 1.279), SOFA (OR = 1.175, 95%CI 1.069 – 1.292) and emergency surgeries (OR = 2.509; 95%CI 1.040 – 6.051).
Conclusion:
Higher prognostic scores, elderly patients, longer surgical times and emergency surgeries were strongly associated with higher 28-day mortality and more complications during the intensive care unit stay.
Keywords:BrazilIntensive care unitspostoperative carePostoperative complications/mortalitySurgical procedures, operative/epidemiologySurgical procedures, operative/mortalitySee more
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Case reports Child Coronavirus infections COVID-19 Critical care Critical illness ICU Infant, newborn Intensive care Intensive care units Intensive care units, pediatric mechanical ventilation Mortality Physical therapy modalities Prognosis Respiration, artificial Respiratory insufficiency risk factors SARS-CoV-2 Sepsis