You searched for:"Jan Bakker"
We found (6) results for your search.-
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.
Views1
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.
-
Special Article
Hemodynamic phenotype-based, capillary refill time-targeted resuscitation in early septic shock: The ANDROMEDA-SHOCK-2 Randomized Clinical Trial study protocol
- Eduardo Kattan
, - Jan Bakker ,
- Elisa Estenssoro ,
- Gustavo Adolfo Ospina-Tascón ,
- Alexandre Biasi Cavalcanti , [ … ],
- Glenn Hernández
Abstract
Special ArticleHemodynamic phenotype-based, capillary refill time-targeted resuscitation in early septic shock: The ANDROMEDA-SHOCK-2 Randomized Clinical Trial study protocol
Rev Bras Ter Intensiva. 2022;34(1):96-106
DOI 10.5935/0103-507X.20220004-en
- Eduardo Kattan ,
- Jan Bakker ,
- Elisa Estenssoro ,
- Gustavo Adolfo Ospina-Tascón ,
- Alexandre Biasi Cavalcanti ,
- Daniel De Backer ,
- Antoine Vieillard-Baron ,
- Jean-Louis Teboul ,
- Ricardo Castro ,
- Glenn Hernández
Views5ABSTRACT
Background:
Early reversion of sepsis-induced tissue hypoperfusion is essential for survival in septic shock. However, consensus regarding the best initial resuscitation strategy is lacking given that interventions designed for the entire population with septic shock might produce unnecessary fluid administration. This article reports the rationale, study design and analysis plan of the ANDROMEDA-2 study, which aims to determine whether a peripheral perfusion-guided strategy consisting of capillary refill time-targeted resuscitation based on clinical and hemodynamic phenotypes is associated with a decrease in a composite outcome of mortality, time to organ support cessation, and hospital length of stay compared to standard care in patients with early (< 4 hours of diagnosis) septic shock.
Methods:
The ANDROMEDA-2 study is a multicenter, multinational randomized controlled trial. In the intervention group, capillary refill time will be measured hourly for 6 hours. If abnormal, patients will enter an algorithm starting with pulse pressure assessment. Patients with pulse pressure less than 40mmHg will be tested for fluid responsiveness and receive fluids accordingly. In patients with pulse pressure > 40mmHg, norepinephrine will be titrated to maintain diastolic arterial pressure > 50mmHg. Patients who fail to normalize capillary refill time after the previous steps will be subjected to critical care echocardiography for cardiac dysfunction evaluation and subsequent management. Finally, vasopressor and inodilator tests will be performed to further optimize perfusion. A sample size of 1,500 patients will provide 88% power to demonstrate superiority of the capillary refill time-targeted strategy.
Conclusions:
If hemodynamic phenotype-based, capillary refill time-targeted resuscitation demonstrates to be a superior strategy, care processes in septic shock resuscitation can be optimized with bedside tools.
Keywords:AlgorithmCapillary refill timeCritical careEchocardiographyLength of staynorepinephrinePerfusionPhenotypeSepsisSeptic shockSee moreViews5Abstract
Special ArticleHemodynamic phenotype-based, capillary refill time-targeted resuscitation in early septic shock: The ANDROMEDA-SHOCK-2 Randomized Clinical Trial study protocol
Rev Bras Ter Intensiva. 2022;34(1):96-106
DOI 10.5935/0103-507X.20220004-en
- Eduardo Kattan ,
- Jan Bakker ,
- Elisa Estenssoro ,
- Gustavo Adolfo Ospina-Tascón ,
- Alexandre Biasi Cavalcanti ,
- Daniel De Backer ,
- Antoine Vieillard-Baron ,
- Jean-Louis Teboul ,
- Ricardo Castro ,
- Glenn Hernández
Views5ABSTRACT
Background:
Early reversion of sepsis-induced tissue hypoperfusion is essential for survival in septic shock. However, consensus regarding the best initial resuscitation strategy is lacking given that interventions designed for the entire population with septic shock might produce unnecessary fluid administration. This article reports the rationale, study design and analysis plan of the ANDROMEDA-2 study, which aims to determine whether a peripheral perfusion-guided strategy consisting of capillary refill time-targeted resuscitation based on clinical and hemodynamic phenotypes is associated with a decrease in a composite outcome of mortality, time to organ support cessation, and hospital length of stay compared to standard care in patients with early (< 4 hours of diagnosis) septic shock.
Methods:
The ANDROMEDA-2 study is a multicenter, multinational randomized controlled trial. In the intervention group, capillary refill time will be measured hourly for 6 hours. If abnormal, patients will enter an algorithm starting with pulse pressure assessment. Patients with pulse pressure less than 40mmHg will be tested for fluid responsiveness and receive fluids accordingly. In patients with pulse pressure > 40mmHg, norepinephrine will be titrated to maintain diastolic arterial pressure > 50mmHg. Patients who fail to normalize capillary refill time after the previous steps will be subjected to critical care echocardiography for cardiac dysfunction evaluation and subsequent management. Finally, vasopressor and inodilator tests will be performed to further optimize perfusion. A sample size of 1,500 patients will provide 88% power to demonstrate superiority of the capillary refill time-targeted strategy.
Conclusions:
If hemodynamic phenotype-based, capillary refill time-targeted resuscitation demonstrates to be a superior strategy, care processes in septic shock resuscitation can be optimized with bedside tools.
Keywords:AlgorithmCapillary refill timeCritical careEchocardiographyLength of staynorepinephrinePerfusionPhenotypeSepsisSeptic shockSee more
- Eduardo Kattan
-
Original Article
Statistical analysis plan for early goal-directed therapy using a physiological holistic view – the ANDROMEDA-SHOCK: a randomized controlled trial
Rev Bras Ter Intensiva. 2018;30(3):253-263
Abstract
Original ArticleStatistical analysis plan for early goal-directed therapy using a physiological holistic view – the ANDROMEDA-SHOCK: a randomized controlled trial
Rev Bras Ter Intensiva. 2018;30(3):253-263
DOI 10.5935/0103-507X.20180041
Views0See moreABSTRACT
Background:
ANDROMEDA-SHOCK is an international, multicenter, randomized controlled trial comparing peripheral perfusion-targeted resuscitation to lactate-targeted resuscitation in patients with septic shock in order to test the hypothesis that resuscitation targeting peripheral perfusion will be associated with lower morbidity and mortality.
Objective:
To report the statistical analysis plan for the ANDROMEDA-SHOCK trial.
Methods:
We describe the trial design, primary and secondary objectives, patients, methods of randomization, interventions, outcomes, and sample size. We describe our planned statistical analysis for the primary, secondary and tertiary outcomes. We also describe the subgroup and sensitivity analyses. Finally, we provide details for presenting our results, including mock tables showing baseline characteristics, the evolution of hemodynamic and perfusion variables, and the effects of treatments on outcomes.
Conclusion:
According to the best trial practice, we report our statistical analysis plan and data management plan prior to locking the database and initiating the analyses. We anticipate that this procedure will prevent analysis bias and enhance the utility of the reported results.
Views0Abstract
Original ArticleStatistical analysis plan for early goal-directed therapy using a physiological holistic view – the ANDROMEDA-SHOCK: a randomized controlled trial
Rev Bras Ter Intensiva. 2018;30(3):253-263
DOI 10.5935/0103-507X.20180041
Views0See moreABSTRACT
Background:
ANDROMEDA-SHOCK is an international, multicenter, randomized controlled trial comparing peripheral perfusion-targeted resuscitation to lactate-targeted resuscitation in patients with septic shock in order to test the hypothesis that resuscitation targeting peripheral perfusion will be associated with lower morbidity and mortality.
Objective:
To report the statistical analysis plan for the ANDROMEDA-SHOCK trial.
Methods:
We describe the trial design, primary and secondary objectives, patients, methods of randomization, interventions, outcomes, and sample size. We describe our planned statistical analysis for the primary, secondary and tertiary outcomes. We also describe the subgroup and sensitivity analyses. Finally, we provide details for presenting our results, including mock tables showing baseline characteristics, the evolution of hemodynamic and perfusion variables, and the effects of treatments on outcomes.
Conclusion:
According to the best trial practice, we report our statistical analysis plan and data management plan prior to locking the database and initiating the analyses. We anticipate that this procedure will prevent analysis bias and enhance the utility of the reported results.
-
Commentaries
Lactate is THE target for early resuscitation in sepsis
Rev Bras Ter Intensiva. 2017;29(2):124-127
Abstract
CommentariesLactate is THE target for early resuscitation in sepsis
Rev Bras Ter Intensiva. 2017;29(2):124-127
DOI 10.5935/0103-507X.20170021
Views0INTRODUCTIONThe resuscitation of patients in sepsis is a challenge for many reasons. One of the important questions is: Who needs what kind of resuscitation? In the present guidelines, resuscitation is mostly directed at patients with a high risk of mortality. In this review, I will discuss the value of using lactate levels to identify patients […]See moreViews0Abstract
CommentariesLactate is THE target for early resuscitation in sepsis
Rev Bras Ter Intensiva. 2017;29(2):124-127
DOI 10.5935/0103-507X.20170021
Views0INTRODUCTIONThe resuscitation of patients in sepsis is a challenge for many reasons. One of the important questions is: Who needs what kind of resuscitation? In the present guidelines, resuscitation is mostly directed at patients with a high risk of mortality. In this review, I will discuss the value of using lactate levels to identify patients […]See more
-
Review Articles
Near-infrared spectroscopy for monitoring peripheral tissue perfusion in critically ill patients
Rev Bras Ter Intensiva. 2011;23(3):341-351
Abstract
Review ArticlesNear-infrared spectroscopy for monitoring peripheral tissue perfusion in critically ill patients
Rev Bras Ter Intensiva. 2011;23(3):341-351
DOI 10.1590/S0103-507X2011000300013
Views0See moreNear infrared spectroscopy (NIRS) is a non-invasive technique that allows determination of tissue oxygenation based on spectro-photometric quantitation of oxy- and deoxyhemoglobin within a tissue. This technique has gained acceptance as a tool to monitor peripheral tissue perfusion in critically ill patient. NIRS principle is based on the use of near-infrared electromagnetic waves for qualitative and quantitative assessments of molecular factors related to tissue oxygenation. Although this technique can be apllied in any tissue, it is primarily used for monitoring peripheral oxygenation in the muscle. Parameters that are determined using NIRS can be either directly calculated or can be derived from physiological interventions, such as arterial and venous occlusions methods. Information regarding muscle oxygen saturation, muscle oxygen consumption and regional blood flow can therefore be obtained. Clinical applications of NIRS include peripheral oxygenation monitoring during resuscitation of trauma and septic shock as well as the assessment of regional microcirculatory disorders. This review provides a brief discussion of NIRS basic principles and main clinical uses of this technique, with a specific focus on studies that assess the usefulness of NIRS in intensive care and emergency patients.
Views0Abstract
Review ArticlesNear-infrared spectroscopy for monitoring peripheral tissue perfusion in critically ill patients
Rev Bras Ter Intensiva. 2011;23(3):341-351
DOI 10.1590/S0103-507X2011000300013
Views0See moreNear infrared spectroscopy (NIRS) is a non-invasive technique that allows determination of tissue oxygenation based on spectro-photometric quantitation of oxy- and deoxyhemoglobin within a tissue. This technique has gained acceptance as a tool to monitor peripheral tissue perfusion in critically ill patient. NIRS principle is based on the use of near-infrared electromagnetic waves for qualitative and quantitative assessments of molecular factors related to tissue oxygenation. Although this technique can be apllied in any tissue, it is primarily used for monitoring peripheral oxygenation in the muscle. Parameters that are determined using NIRS can be either directly calculated or can be derived from physiological interventions, such as arterial and venous occlusions methods. Information regarding muscle oxygen saturation, muscle oxygen consumption and regional blood flow can therefore be obtained. Clinical applications of NIRS include peripheral oxygenation monitoring during resuscitation of trauma and septic shock as well as the assessment of regional microcirculatory disorders. This review provides a brief discussion of NIRS basic principles and main clinical uses of this technique, with a specific focus on studies that assess the usefulness of NIRS in intensive care and emergency patients.
-
Failure to wean caused by cryptogenic fibrosing pleuritis and bilateral lung trapping: case report
Rev Bras Ter Intensiva. 2007;19(4):504-508
Abstract
Failure to wean caused by cryptogenic fibrosing pleuritis and bilateral lung trapping: case report
Rev Bras Ter Intensiva. 2007;19(4):504-508
DOI 10.1590/S0103-507X2007000400018
Views0See moreBACKGROUND AND OBJECTIVES: Cryptogenic fibrosing pleuritis is an extremely rare disease, which can affect both lungs from a very young age. The most common finding is severe lung restriction resulting in both hypoxemic and ventilatory failure. CASE REPORT: Male patient, 26 year old with acute deterioration of chronic respiratory failure. Following admission prolonged mechanical ventilation was necessary. An atypical clinical presentation made the diagnosis difficult, but eventually cryptogenic fibrosing pleuritis and lung fibrosis were established. CONCLUSIONS: The prognostic outcome of patients with the final diagnosis of cryptogenic fibrosing pleuritis is extremely poor, especially in an advanced phase of this disease. We recommend early treatment with corticosteroids or surgical pleural decortication.
Views0Abstract
Failure to wean caused by cryptogenic fibrosing pleuritis and bilateral lung trapping: case report
Rev Bras Ter Intensiva. 2007;19(4):504-508
DOI 10.1590/S0103-507X2007000400018
Views0See moreBACKGROUND AND OBJECTIVES: Cryptogenic fibrosing pleuritis is an extremely rare disease, which can affect both lungs from a very young age. The most common finding is severe lung restriction resulting in both hypoxemic and ventilatory failure. CASE REPORT: Male patient, 26 year old with acute deterioration of chronic respiratory failure. Following admission prolonged mechanical ventilation was necessary. An atypical clinical presentation made the diagnosis difficult, but eventually cryptogenic fibrosing pleuritis and lung fibrosis were established. CONCLUSIONS: The prognostic outcome of patients with the final diagnosis of cryptogenic fibrosing pleuritis is extremely poor, especially in an advanced phase of this disease. We recommend early treatment with corticosteroids or surgical pleural decortication.
Search
Search in:
KEY WORDS
Case reports Child Coronavirus infections COVID-19 Critical care Critical illness Extracorporeal membrane oxygenation 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