Browsing by Author "Romero, Carlos"

Now showing 1 - 8 of 8
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    Evolution of peripheral vs metabolic perfusion parameters during septic shock resuscitation. A clinical-physiologic study
    (W B SAUNDERS CO-ELSEVIER INC, 2012) Hernandez, Glenn; Pedreros, Cesar; Veas, Enrique; Bruhn, Alejandro; Romero, Carlos; Rovegno, Maximiliano; Neira, Rodolfo; Bravo, Sebastian; Castro, Ricardo; Kattan, Eduardo; Ince, Can
    Purpose: Perfusion assessment during septic shock resuscitation is difficult and usually complex determinations. Capillary refill time (CRT) and central-to-toe temperature difference (Tc-toe) have been proposed as objective reproducible parameters to evaluate peripheral perfusion. The comparative evolution of peripheral vs metabolic perfusion parameters in septic shock resuscitation has not been studied. We conducted a prospective observational clinical-physiologic study to address this subject.
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    High-volume hemofiltration as salvage therapy in severe hyperdynamic septic shock
    (2006) Cornejo, Rodrigo; Downey Concha, Patricio; Castro López, Ricardo; Romero, Carlos; Regueira Heskia, Tomás Emilio; Vega Stieb, Jorge Enrique; Castillo Fuenzalida, Luis Benito; Andresen Hernández, Max Alfonso; Dougnac Labatut, Alberto; Bugedo Tarraza, Guillermo; Hernández Poblete, Glenn Wilson
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    Intra-abdominal hypertension: Incidence and association with organ dysfunction during early septic shock
    (W B SAUNDERS CO-ELSEVIER INC, 2008) Regueira, Tomas; Bruhn, Alejandro; Hasbun, Pablo; Aguirre, Marcia; Romero, Carlos; Llanos, Osvaldo; Castro, Ricardo; Bugedo, Guillermo; Hernandez, Glenn
    Purpose: The objective of this article is to study the cumulative incidence of intra-abdominal hypertension (IAH) in septic shock (SS) patients during the first 72 hours of intensive care unit (ICU) admission and to determine if the presence and severity of IAH are associated with sepsis morbidity and mortality.
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    Intraabdominal hypertension in patients with septic shock
    (Southeastern Surgical Congress, 2007) Regueira, Tomás; Hasbún, Pablo; Rebolledo Acevedo, Rolando Arturo; Galindo, José; Aguirre, Marcia; Romero, Carlos; Castillo, Luis; Bugedo Tarraza, Guillermo; Hernández P., Glenn
    Intraabdominal hypertension (IAH) develops frequently in patients with septic shock. Even a moderate increase in intraabdominal pressure (IAP) in this setting could be associated with high lactate levels. The authors conducted a prospective, observational, nonrandomized control trial in the surgical intensive care unit of an academic tertiary center. Twenty-seven patients with septic shock (septic shock group), and 19 patients undergoing abdominal surgery with more than two risk factors for IAH (postoperative control group) were admitted consecutively to the intensive care unit. IAP was measured every 6 hours during the first 48 hours. IAH was diagnosed with two consecutive measurements greater than 20 mm Hg. The main outcome measures were prevalence of IAH in septic shock and control groups; and comparative lactate levels, norepinephrine requirements and organ dysfunctions in patients with and without IAH in both groups. Fifty-one per cent of patients with septic shock and 31 per cent of control patients developed IAH. Patients with septic shock with and without IAH were comparable in peak norepinephrine dose, sequential organ failure assessment score, and mortality. However, peak lactate levels were significantly higher in patients with septic shock and IAH compared with those without IAH (3.5 mmol/L versus 1.9 mmol/L, P < 0.04). There was a significant positive temporal correlation between IAP and lactate levels in patients with septic shock with IAH. Peak levels of both occurred early and decreased progressively over time. Control patients with and without IAH exhibited comparable peak lactate levels. Intraabdominal hypertension is very common in septic shock and appears to be related to high lactate levels, which diminish as IAP decreases. Future studies should address the usefulness of IAP monitoring in patients with septic shock.
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    Organizational Issues, structure and processes of care in 257 ICUs in Latin America: a study from the latin America Intensiva Care Network
    (2017) Estenssoro, Elisa; Alegría, Leyla; Murias, Gastón; Friedman, Gilberto; Castro López, Ricardo; Nin Vaeza, Nicolas; Loudet, Cecilia; Bruhn, Alejandro; Jibaja, Manuel; Ospina Tascon, Gustavo; Ríos, Fernando; Machado, Flavia R.; Biasi Cavalcanti, Alexandre; Dubin, Arnaldo; Hurtado, F. Javier; Briva, Arturo; Romero, Carlos; Bugedo Tarraza, Guillermo; Bakker, Jan; Cecconi, Maurizio; Azevedo, Luciano; Hernández P., Glenn
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    Persistent sepsis-induced hypotension without hyperlactatemia: Is it really septic shock?
    (W B SAUNDERS CO-ELSEVIER INC, 2011) Hernandez, Glenn; Castro, Ricardo; Romero, Carlos; de la Hoz, Claudio; Angulo, Daniela; Aranguiz, Ignacio; Larrondo, Jorge; Bujes, Andres; Bruhn, Alejandro
    Purpose: The prognostic value of hyperlactatemia in septic shock is unquestionable. However, as current definitions do not include hyperlactatemia as a mandatory criterion, some hypotensive patients may be diagnosed as having septic shock despite exhibiting normolactatemia. The significance of persistent sepsis-induced hypotension without hyperlactatemia is unclear. Is it really septic shock? Our aim was to determine differences in outcome between patients diagnosed as having septic shock but exhibiting normal vs elevated lactate levels during evolution. We also explored the potential implications of including hyperlactatemia as an obligatory diagnostic criterion.
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    Recomendaciones de la Sociedad Chilena de Medicina Intensiva para la prevención de tromboembolismo venoso en pacientes críticos médico-quirúrgicos adultos
    (2016) Figueroa, Gastón; Labarca, Eduardo; Cornejo, Rodrigo; Ruiz, Carolina; Sánchez, Juan Eduardo; Castro López, Ricardo; Huerta, Gustavo; Pedreros, César; Regueira Heskia, Tomás; Romero, Carlos
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    When to stop septic shock resuscitation: clues from a dynamic perfusion monitoring
    (2014) Hernández P., Glenn; Bruhn, Alejandro; Kattan Tala, Eduardo José; Fuentealba, Andrea; Castro, Ricardo; Regueira Heskia, Tomás; Luengo, Cecilia; Friedman, Gilberto; Ospina Tascón, Gustavo A.; Romero, Carlos
    Abstract Background The decision of when to stop septic shock resuscitation is a critical but yet a relatively unexplored aspect of care. This is especially relevant since the risks of over-resuscitation with fluid overload or inotropes have been highlighted in recent years. A recent guideline has proposed normalization of central venous oxygen saturation and/or lactate as therapeutic end-points, assuming that these variables are equivalent or interchangeable. However, since the physiological determinants of both are totally different, it is legitimate to challenge the rationale of this proposal. We designed this study to gain more insights into the most appropriate resuscitation goal from a dynamic point of view. Our objective was to compare the normalization rates of these and other potential perfusion-related targets in a cohort of septic shock survivors. Methods We designed a prospective, observational clinical study. One hundred and four septic shock patients with hyperlactatemia were included and followed until hospital discharge. The 84 hospital-survivors were kept for final analysis. A multimodal perfusion assessment was performed at baseline, 2, 6, and 24 h of ICU treatment. Results Some variables such as central venous oxygen saturation, central venous-arterial pCO2 gradient, and capillary refill time were already normal in more than 70% of survivors at 6 h. Lactate presented a much slower normalization rate decreasing significantly at 6 h compared to that of baseline (4.0 [3.0 to 4.9] vs. 2.7 [2.2 to 3.9] mmol/L; p < 0.01) but with only 52% of patients achieving normality at 24 h. Sublingual microcirculatory variables exhibited the slowest recovery rate with persistent derangements still present in almost 80% of patients at 24 h. Conclusions Perfusion-related variables exhibit very different normalization rates in septic shock survivors, most of them exhibiting a biphasic response with an initial rapid improvement, followed by a much slower trend thereafter. This fact should be taken into account to determine the most appropriate criteria to stop resuscitation opportunely and avoid the risk of over-resuscitation.Abstract Background The decision of when to stop septic shock resuscitation is a critical but yet a relatively unexplored aspect of care. This is especially relevant since the risks of over-resuscitation with fluid overload or inotropes have been highlighted in recent years. A recent guideline has proposed normalization of central venous oxygen saturation and/or lactate as therapeutic end-points, assuming that these variables are equivalent or interchangeable. However, since the physiological determinants of both are totally different, it is legitimate to challenge the rationale of this proposal. We designed this study to gain more insights into the most appropriate resuscitation goal from a dynamic point of view. Our objective was to compare the normalization rates of these and other potential perfusion-related targets in a cohort of septic shock survivors. Methods We designed a prospective, observational clinical study. One hundred and four septic shock patients with hyperlactatemia were included and followed until hospital discharge. The 84 hospital-survivors were kept for final analysis. A multimodal perfusion assessment was performed at baseline, 2, 6, and 24 h of ICU treatment. Results Some variables such as central venous oxygen saturation, central venous-arterial pCO2 gradient, and capillary refill time were already normal in more than 70% of survivors at 6 h. Lactate presented a much slower normalization rate decreasing significantly at 6 h compared to that of baseline (4.0 [3.0 to 4.9] vs. 2.7 [2.2 to 3.9] mmol/L; p < 0.01) but with only 52% of patients achieving normality at 24 h. Sublingual microcirculatory variables exhibited the slowest recovery rate with persistent derangements still present in almost 80% of patients at 24 h. Conclusions Perfusion-related variables exhibit very different normalization rates in septic shock survivors, most of them exhibiting a biphasic response with an initial rapid improvement, followed by a much slower trend thereafter. This fact should be taken into account to determine the most appropriate criteria to stop resuscitation opportunely and avoid the risk of over-resuscitation.Abstract Background The decision of when to stop septic shock resuscitation is a critical but yet a relatively unexplored aspect of care. This is especially relevant since the risks of over-resuscitation with fluid overload or inotropes have been highlighted in recent years. A recent guideline has proposed normalization of central venous oxygen saturation and/or lactate as therapeutic end-points, assuming that these variables are equivalent or interchangeable. However, since the physiological determinants of both are totally different, it is legitimate to challenge the rationale of this proposal. We designed this study to gain more insights into the most appropriate resuscitation goal from a dynamic point of view. Our objective was to compare the normalization rates of these and other potential perfusion-related targets in a cohort of septic shock survivors. Methods We designed a prospective, observational clinical study. One hundred and four septic shock patients with hyperlactatemia were included and followed until hospital discharge. The 84 hospital-survivors were kept for final analysis. A multimodal perfusion assessment was performed at baseline, 2, 6, and 24 h of ICU treatment. Results Some variables such as central venous oxygen saturation, central venous-arterial pCO2 gradient, and capillary refill time were already normal in more than 70% of survivors at 6 h. Lactate presented a much slower normalization rate decreasing significantly at 6 h compared to that of baseline (4.0 [3.0 to 4.9] vs. 2.7 [2.2 to 3.9] mmol/L; p < 0.01) but with only 52% of patients achieving normality at 24 h. Sublingual microcirculatory variables exhibited the slowest recovery rate with persistent derangements still present in almost 80% of patients at 24 h. Conclusions Perfusion-related variables exhibit very different normalization rates in septic shock survivors, most of them exhibiting a biphasic response with an initial rapid improvement, followed by a much slower trend thereafter. This fact should be taken into account to determine the most appropriate criteria to stop resuscitation opportunely and avoid the risk of over-resuscitation.Abstract Background The decision of when to stop septic shock resuscitation is a critical but yet a relatively unexplored aspect of care. This is especially relevant since the risks of over-resuscitation with fluid overload or inotropes have been highlighted in recent years. A recent guideline has proposed normalization of central venous oxygen saturation and/or lactate as therapeutic end-points, assuming that these variables are equivalent or interchangeable. However, since the physiological determinants of both are totally different, it is legitimate to challenge the rationale of this proposal. We designed this study to gain more insights into the most appropriate resuscitation goal from a dynamic point of view. Our objective was to compare the normalization rates of these and other potential perfusion-related targets in a cohort of septic shock survivors. Methods We designed a prospective, observational clinical study. One hundred and four septic shock patients with hyperlactatemia were included and followed until hospital discharge. The 84 hospital-survivors were kept for final analysis. A multimodal perfusion assessment was performed at baseline, 2, 6, and 24 h of ICU treatment. Results Some variables such as central venous oxygen saturation, central venous-arterial pCO2 gradient, and capillary refill time were already normal in more than 70% of survivors at 6 h. Lactate presented a much slower normalization rate decreasing significantly at 6 h compared to that of baseline (4.0 [3.0 to 4.9] vs. 2.7 [2.2 to 3.9] mmol/L; p < 0.01) but with only 52% of patients achieving normality at 24 h. Sublingual microcirculatory variables exhibited the slowest recovery rate with persistent derangements still present in almost 80% of patients at 24 h. Conclusions Perfusion-related variables exhibit very different normalization rates in septic shock survivors, most of them exhibiting a biphasic response with an initial rapid improvement, followed by a much slower trend thereafter. This fact should be taken into account to determine the most appropriate criteria to stop resuscitation opportunely and avoid the risk of over-resuscitation.Abstract Background The decision of when to stop septic shock resuscitation is a critical but yet a relatively unexplored aspect of care. This is especially relevant since the risks of over-resuscitation with fluid overload or inotropes have been highlighted in recent years. A recent guideline has proposed normalization of central venous oxygen saturation and/or lactate as therapeutic end-points, assuming that these variables are equivalent or interchangeable. However, since the physiological determinants of both are totally different, it is legitimate to challenge the rationale of this proposal. We designed this study to gain more insights into the most appropriate resuscitation goal from a dynamic point of view. Our objective was to compare the normalization rates of these and other potential perfusion-related targets in a cohort of septic shock survivors. Methods We designed a prospective, observational clinical study. One hundred and four septic shock patients with hyperlactatemia were included and followed until hospital discharge. The 84 hospital-survivors were kept for final analysis. A multimodal perfusion assessment was performed at baseline, 2, 6, and 24 h of ICU treatment. Results Some variables such as central venous oxygen saturation, central venous-arterial pCO2 gradient, and capillary refill time were already normal in more than 70% of survivors at 6 h. Lactate presented a much slower normalization rate decreasing significantly at 6 h compared to that of baseline (4.0 [3.0 to 4.9] vs. 2.7 [2.2 to 3.9] mmol/L; p < 0.01) but with only 52% of patients achieving normality at 24 h. Sublingual microcirculatory variables exhibited the slowest recovery rate with persistent derangements still present in almost 80% of patients at 24 h. Conclusions Perfusion-related variables exhibit very different normalization rates in septic shock survivors, most of them exhibiting a biphasic response with an initial rapid improvement, followed by a much slower trend thereafter. This fact should be taken into account to determine the most appropriate criteria to stop resuscitation opportunely and avoid the risk of over-resuscitation.