Você pesquisou por y - Critical Care Science (CCS)
Abstract
Rev Bras Ter Intensiva. 2008;20(4):325-330
DOI 10.1590/S0103-507X2008000400002
OBJECTIVES: Sedation scores are important tools for use in pediatric intensive care units. The Comfort-Behavior scale is a valid method for the assessment of children although it is considered an extensive scale. The motor activity assessment scale is validated for an adult population. We considered it simpler then the one above and suitable for application in children. None of these scores had been translated into Portuguese. Our objective was to apply both scales in Portuguese to a pediatric population under mechanical ventilation. Secondary objectives were to evaluate the sedation level of children on mechanical ventilation in tertiary pediatric intensive care units and to compare the Comfort- Behavior and motor activity assessment scales in this population. METHODS: After translating the scales into Portuguese, both were simultaneously applied to 26 patients by 2 pediatricians. Each scale was applied 116 times in total. RESULTS: The intraclass correlation coefficient was 0.90 (0.85 - 0.93 CI 95%) for the Comfort-Behavior and 0.94 (0.92 - 0.96 CI 95%) for the motor activity assessment scale. When applying the Comfort-Behavior scale, the Crombach's alpha was 0.81 for observer A and 0.92 for observer B. The Spearman coefficient was 0.86 for observer A and 0.91 for observer B. These patients were found to be deeply sedated, showing low values in both scales. CONCLUSIONS: The scales were successfully translated into Portuguese and both were adequate to assess pain and sedation in the pediatric population under mechanical ventilation. Sedation level was high in this sample of applications.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):325-330
DOI 10.1590/S0103-507X2008000400002
OBJECTIVES: Sedation scores are important tools for use in pediatric intensive care units. The Comfort-Behavior scale is a valid method for the assessment of children although it is considered an extensive scale. The motor activity assessment scale is validated for an adult population. We considered it simpler then the one above and suitable for application in children. None of these scores had been translated into Portuguese. Our objective was to apply both scales in Portuguese to a pediatric population under mechanical ventilation. Secondary objectives were to evaluate the sedation level of children on mechanical ventilation in tertiary pediatric intensive care units and to compare the Comfort- Behavior and motor activity assessment scales in this population. METHODS: After translating the scales into Portuguese, both were simultaneously applied to 26 patients by 2 pediatricians. Each scale was applied 116 times in total. RESULTS: The intraclass correlation coefficient was 0.90 (0.85 - 0.93 CI 95%) for the Comfort-Behavior and 0.94 (0.92 - 0.96 CI 95%) for the motor activity assessment scale. When applying the Comfort-Behavior scale, the Crombach's alpha was 0.81 for observer A and 0.92 for observer B. The Spearman coefficient was 0.86 for observer A and 0.91 for observer B. These patients were found to be deeply sedated, showing low values in both scales. CONCLUSIONS: The scales were successfully translated into Portuguese and both were adequate to assess pain and sedation in the pediatric population under mechanical ventilation. Sedation level was high in this sample of applications.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):331-338
DOI 10.1590/S0103-507X2008000400003
OBJECTIVES: This study attempted to identify which is the more effective suction system. The objective was to compare open versus closed suction systems according to a systematic review. METHODS: A search of scientific literature was conducted in MedLine, LILACS and Cochrane between 1997 and August 2007 using the key words: endotracheal suction and closed suction. Included were articles that compared the open and closed suction systems used in adult humans and that were randomized and controlled trials. RESULTS: From the 78 articles identified, only 15 were accepted and described in this review. Nine compared incidence of ventilator-associated pneumonia, six compared oxygen saturation, four compared blood pressure and heart rate, three compared pulmonary volumes, two compared secretion removal and four compared costs. No difference was found in these variables compared: incidence of ventilator associated pneumonia, mortality, intensive care unit length of stay, duration of mechanical ventilation, PaCO2, PaO2, mean blood pressure, heart rate and secretion removal. However, there were always SpO2 and pulmonary volume decreases when using the open suction system; and costs were lower in most of the studies that used the closed suction system. CONCLUSIONS: Closed suction system seems to increase the risk of colonization, but has the advantage of not reducing the pulmonary volumes and not entailing a drop of saturation, especially in patients with severe respiratory failure and in the use of higher levels of positive end expiratory pressure.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):331-338
DOI 10.1590/S0103-507X2008000400003
OBJECTIVES: This study attempted to identify which is the more effective suction system. The objective was to compare open versus closed suction systems according to a systematic review. METHODS: A search of scientific literature was conducted in MedLine, LILACS and Cochrane between 1997 and August 2007 using the key words: endotracheal suction and closed suction. Included were articles that compared the open and closed suction systems used in adult humans and that were randomized and controlled trials. RESULTS: From the 78 articles identified, only 15 were accepted and described in this review. Nine compared incidence of ventilator-associated pneumonia, six compared oxygen saturation, four compared blood pressure and heart rate, three compared pulmonary volumes, two compared secretion removal and four compared costs. No difference was found in these variables compared: incidence of ventilator associated pneumonia, mortality, intensive care unit length of stay, duration of mechanical ventilation, PaCO2, PaO2, mean blood pressure, heart rate and secretion removal. However, there were always SpO2 and pulmonary volume decreases when using the open suction system; and costs were lower in most of the studies that used the closed suction system. CONCLUSIONS: Closed suction system seems to increase the risk of colonization, but has the advantage of not reducing the pulmonary volumes and not entailing a drop of saturation, especially in patients with severe respiratory failure and in the use of higher levels of positive end expiratory pressure.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):339-343
DOI 10.1590/S0103-507X2008000400004
OBJECTIVE: After brain injury intracranial hypertension is the major cause of mortality, in addition to the possibility of functional, behavioral and cognitive sequels. Scarcity of studies on the effects of respiratory physiotherapy on these patients may lead to contradictory performances. This study aimed to assess the effects of customary respiratory physiotherapy maneuvers on intracranial and cerebral perfusion pressures in patients with severe brain injury. METHODS: Clinical, prospective trial with patients with severe traumatic brain injury, mechanically ventilated and with a continued measurement of intracranial pressure. The effects of manual vibrocompression maneuvers and intratracheal aspiration with or without saline infusion on the measurements of intracranial and cerebral perfusion pressures, between the first and third day after cerebral injury were evaluated. RESULTS: Data were collected from 11 patients, 41 years of age (median) and APACHE II of 19.5 ± 5. The manual vibrocompression maneuver did not cause an increase of intracranial pressure on any of the days assessed. Intracranial pressure significantly increased after intratracheal aspiration maneuvers in relation to the basal measurement (day1, 9.5 ± 0.9 mm Hg vs 18.0 ± 3.2 mm Hg; day 2, 10.6 ± 1.7 mm Hg vs 21.4 ± 3.8 mm Hg; day 3, 14.4 ± 1.0 vs 24.9 ± 2.7 mm Hg; p<0.05 for all). However, these elevations were transient (about 27 seconds) and accompanied by compensatory increases of the cerebral perfusion pressure. CONCLUSION: The manual vibrocompression maneuver did not increase intracranial pressure or cerebral perfusion pressure in patients with severe brain injury. Intratracheal aspiration induced a significant and transient increase of the intracranial and cerebral perfusion pressures.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):339-343
DOI 10.1590/S0103-507X2008000400004
OBJECTIVE: After brain injury intracranial hypertension is the major cause of mortality, in addition to the possibility of functional, behavioral and cognitive sequels. Scarcity of studies on the effects of respiratory physiotherapy on these patients may lead to contradictory performances. This study aimed to assess the effects of customary respiratory physiotherapy maneuvers on intracranial and cerebral perfusion pressures in patients with severe brain injury. METHODS: Clinical, prospective trial with patients with severe traumatic brain injury, mechanically ventilated and with a continued measurement of intracranial pressure. The effects of manual vibrocompression maneuvers and intratracheal aspiration with or without saline infusion on the measurements of intracranial and cerebral perfusion pressures, between the first and third day after cerebral injury were evaluated. RESULTS: Data were collected from 11 patients, 41 years of age (median) and APACHE II of 19.5 ± 5. The manual vibrocompression maneuver did not cause an increase of intracranial pressure on any of the days assessed. Intracranial pressure significantly increased after intratracheal aspiration maneuvers in relation to the basal measurement (day1, 9.5 ± 0.9 mm Hg vs 18.0 ± 3.2 mm Hg; day 2, 10.6 ± 1.7 mm Hg vs 21.4 ± 3.8 mm Hg; day 3, 14.4 ± 1.0 vs 24.9 ± 2.7 mm Hg; p<0.05 for all). However, these elevations were transient (about 27 seconds) and accompanied by compensatory increases of the cerebral perfusion pressure. CONCLUSION: The manual vibrocompression maneuver did not increase intracranial pressure or cerebral perfusion pressure in patients with severe brain injury. Intratracheal aspiration induced a significant and transient increase of the intracranial and cerebral perfusion pressures.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):344-348
DOI 10.1590/S0103-507X2008000400005
OBJECTIVE: The main purpose of this study was to compare performance of the Ramsay and Richmond sedation scores on mechanically ventilated critically ill patients, in a university-affiliated hospital. METHODS: This was a 4-month prospective study, which included a total of 45 patients mechanically ventilated, with at least 48 hours stay in the intensive care unit. Each patient was assessed daily for sedation mode, sedative and analgesic doses and sedation level using the Ramsay and Richmond scores. Statistical analysis was made using Student's t-test, Pearson's and Spearman's correlation, and constructing ROC-curves. RESULTS: A high general mortality of 60% was observed. The length of sedation and daily dose of medication did not correlate with mortality. Deep sedation (Ramsay > 4 or Richmond < -3) was positively correlated with probability of death with an AUC > 0.78. An adequate level of sedation (Ramsay 2 to 4 or Richmond 0 to -3) was sensitively correlated with probability of survival with an AUC > 0.80. A low level of sedation was observed in 63 days evaluated (8.64%), and no correlation was found between occurrence of agitation and unfavorable outcomes. Correlation between Ramsay and Richmond scores (Pearson's > 0.810 - p<0.0001) was good. CONCLUSION: In this study, Ramsay and Richmond sedation scores were similar for the assessment of deep, insufficient and adequate sedation. Both have good correlation with mortality in over sedated patients.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):344-348
DOI 10.1590/S0103-507X2008000400005
OBJECTIVE: The main purpose of this study was to compare performance of the Ramsay and Richmond sedation scores on mechanically ventilated critically ill patients, in a university-affiliated hospital. METHODS: This was a 4-month prospective study, which included a total of 45 patients mechanically ventilated, with at least 48 hours stay in the intensive care unit. Each patient was assessed daily for sedation mode, sedative and analgesic doses and sedation level using the Ramsay and Richmond scores. Statistical analysis was made using Student's t-test, Pearson's and Spearman's correlation, and constructing ROC-curves. RESULTS: A high general mortality of 60% was observed. The length of sedation and daily dose of medication did not correlate with mortality. Deep sedation (Ramsay > 4 or Richmond < -3) was positively correlated with probability of death with an AUC > 0.78. An adequate level of sedation (Ramsay 2 to 4 or Richmond 0 to -3) was sensitively correlated with probability of survival with an AUC > 0.80. A low level of sedation was observed in 63 days evaluated (8.64%), and no correlation was found between occurrence of agitation and unfavorable outcomes. Correlation between Ramsay and Richmond scores (Pearson's > 0.810 - p<0.0001) was good. CONCLUSION: In this study, Ramsay and Richmond sedation scores were similar for the assessment of deep, insufficient and adequate sedation. Both have good correlation with mortality in over sedated patients.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):349-354
DOI 10.1590/S0103-507X2008000400006
OBJECTIVES: Drug interactions occur when effects and/or toxicity of a drug are affected by presence of another drug. They are usually unpredictable and undesirable. A study was conducted to verify the prevalence and clinical value of potential drug interactions in intensive care units METHODS: All patients, of three intensive care units were included in a cross-sectional study, over a period of two months. Patients with less than a 2 days length of stay were excluded. Data were collected from twenty-four hour prescriptions and all possible paired combinations drug-drug were recorded. Prevalence and clinical value (significance) were checked at the end of follow-up. RESULTS: One hundred and forty patients were analyzed, 67.1% presented with some significant potential drug interactions and of the 1069 prescriptions, 39.2% disclosed the same potential. Of 188 different potential drug interactions, 29 were considered highly significant. Univariate analysis showed that in the group with significant potential drug interactions a higher number of different drugs, drugs/day had been used, there were more prescribing physicians and extended stay in intensive care units. Adjusted to the multivariate logistic regression model, only the number of drugs/day correlated with increased risk of significant potential drug interaction (p = 0.0011) and, furthermore that use of more than 6 drugs/day increased relative risk by 9.8 times. CONCLUSIONS: Critically ill patients are submitted to high risk of potential drug interactions and the number of drugs/day has a high positive predictive value for these interactions. Therefore, it is imperative that critical care physicians be constantly alert to recognize this problem and provide appropriate mechanisms for management, thereby reducing adverse outcomes.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):349-354
DOI 10.1590/S0103-507X2008000400006
OBJECTIVES: Drug interactions occur when effects and/or toxicity of a drug are affected by presence of another drug. They are usually unpredictable and undesirable. A study was conducted to verify the prevalence and clinical value of potential drug interactions in intensive care units METHODS: All patients, of three intensive care units were included in a cross-sectional study, over a period of two months. Patients with less than a 2 days length of stay were excluded. Data were collected from twenty-four hour prescriptions and all possible paired combinations drug-drug were recorded. Prevalence and clinical value (significance) were checked at the end of follow-up. RESULTS: One hundred and forty patients were analyzed, 67.1% presented with some significant potential drug interactions and of the 1069 prescriptions, 39.2% disclosed the same potential. Of 188 different potential drug interactions, 29 were considered highly significant. Univariate analysis showed that in the group with significant potential drug interactions a higher number of different drugs, drugs/day had been used, there were more prescribing physicians and extended stay in intensive care units. Adjusted to the multivariate logistic regression model, only the number of drugs/day correlated with increased risk of significant potential drug interaction (p = 0.0011) and, furthermore that use of more than 6 drugs/day increased relative risk by 9.8 times. CONCLUSIONS: Critically ill patients are submitted to high risk of potential drug interactions and the number of drugs/day has a high positive predictive value for these interactions. Therefore, it is imperative that critical care physicians be constantly alert to recognize this problem and provide appropriate mechanisms for management, thereby reducing adverse outcomes.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):355-361
DOI 10.1590/S0103-507X2008000400007
OBJECTIVES: Students of Salvador - BA, Brazil were trained in critical care medicine by accomplishing extracurricular internships. This study aims to detect changes in attitude and interest of students who concluded these internships as well as the most frequent activities developed. METHODS: Descriptive cross-sectional survey conducted with students who did extracurricular internships in adult intensive care units during the second semester of 2006. A self-administered questionnaire was given using objective questions. RESULTS: We evaluated 49 students. Interest in becoming an intensivist was classified as high/very high by 32.7% before internship, after which 61.2% reported increased interest. Before internship, students on a 1 to 5 scale rated the importance of critical care medicine as 4.55 ± 0.70. After internship, 98% felt more confident to refer a patient to the intensive care unit, 95.9% to evaluate with supervision, patients admitted to intensive care units and 89.8% to attend patients in the emergency room. The most common procedures observed were: central venous access (100%), peripheral venous access (91.8%) and orotracheal intubation (91.8%). Topics ranked in terms of interest from 1 to 5 were: systemic inflammatory response syndrome/sepsis (4.82 ± 0.48), shock (4.81 ± 0.44) and cardiopulmonary resuscitation (4.77 ± 0.55). CONCLUSIONS: This study showed that internships in adult intensive care units of Salvador (BA), Brazil provided students with greater assurance to evaluate critical patients, increased their interest to follow an intensivist physician career and allowed contact with the main procedures and topics related to critical care medicine.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):355-361
DOI 10.1590/S0103-507X2008000400007
OBJECTIVES: Students of Salvador - BA, Brazil were trained in critical care medicine by accomplishing extracurricular internships. This study aims to detect changes in attitude and interest of students who concluded these internships as well as the most frequent activities developed. METHODS: Descriptive cross-sectional survey conducted with students who did extracurricular internships in adult intensive care units during the second semester of 2006. A self-administered questionnaire was given using objective questions. RESULTS: We evaluated 49 students. Interest in becoming an intensivist was classified as high/very high by 32.7% before internship, after which 61.2% reported increased interest. Before internship, students on a 1 to 5 scale rated the importance of critical care medicine as 4.55 ± 0.70. After internship, 98% felt more confident to refer a patient to the intensive care unit, 95.9% to evaluate with supervision, patients admitted to intensive care units and 89.8% to attend patients in the emergency room. The most common procedures observed were: central venous access (100%), peripheral venous access (91.8%) and orotracheal intubation (91.8%). Topics ranked in terms of interest from 1 to 5 were: systemic inflammatory response syndrome/sepsis (4.82 ± 0.48), shock (4.81 ± 0.44) and cardiopulmonary resuscitation (4.77 ± 0.55). CONCLUSIONS: This study showed that internships in adult intensive care units of Salvador (BA), Brazil provided students with greater assurance to evaluate critical patients, increased their interest to follow an intensivist physician career and allowed contact with the main procedures and topics related to critical care medicine.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):362-369
DOI 10.1590/S0103-507X2008000400008
OBJECTIVES: Elevated lipase and amylase are commonly found in patients in intensive care unit without a previously recognized pancreatic illness, constituting a diagnostic and therapeutic challenge. The authors therefore proposed to determine the frequency of asymptomatic high serum lipase in critically ill patients, involved risk factors and outcome. METHODS: Retrospective study of patients admitted in an intensive care unit from January 1 to December 31, 2006, excluding admissions for acute pancreatitis, history of pancreatic disease, renal insufficiency or lacking of data. Patients were divided in two groups (with and without high serum lipase) that were compared for clinical, laboratory and radiological variables. Statistical analysis: SPSS 13; Student's t test and Chi-square test (CI 95%) with statistical significance if p< 0.05). RESULTS: 102 patients were included with high serum lipase was present in 39.2% of patients, mean lipase of 797U/L. Patients with high serum lipase had longer hospital stay (p< 0.001), parenteral nutrition (p< 0.001), ventilator support (p=0.04), fever (p< 0.001), hyperamylasemia (p<0.05), hyperbilirrubinemia (p=0.003) and rise of transaminases (p=0.001), with no significant differences in diagnosis, gender, age, APACHE II, SOFA, SAPS, mortality, hypotension, alkaline phosphatase, hemoglobin, lactate, tolerance to enteral nutrition and use of propofol. Imaging study revealed pancreatic alterations in two patients with high serum lipase. CONCLUSIONS: Elevated lipase was commonly found in critical patients, it related with longer length of stay but was not accompanied by increased clinical severity or mortality. It was more frequent with parenteral nutrition. A minority of patients met the criteria of acute pancreatitis.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):362-369
DOI 10.1590/S0103-507X2008000400008
OBJECTIVES: Elevated lipase and amylase are commonly found in patients in intensive care unit without a previously recognized pancreatic illness, constituting a diagnostic and therapeutic challenge. The authors therefore proposed to determine the frequency of asymptomatic high serum lipase in critically ill patients, involved risk factors and outcome. METHODS: Retrospective study of patients admitted in an intensive care unit from January 1 to December 31, 2006, excluding admissions for acute pancreatitis, history of pancreatic disease, renal insufficiency or lacking of data. Patients were divided in two groups (with and without high serum lipase) that were compared for clinical, laboratory and radiological variables. Statistical analysis: SPSS 13; Student's t test and Chi-square test (CI 95%) with statistical significance if p< 0.05). RESULTS: 102 patients were included with high serum lipase was present in 39.2% of patients, mean lipase of 797U/L. Patients with high serum lipase had longer hospital stay (p< 0.001), parenteral nutrition (p< 0.001), ventilator support (p=0.04), fever (p< 0.001), hyperamylasemia (p<0.05), hyperbilirrubinemia (p=0.003) and rise of transaminases (p=0.001), with no significant differences in diagnosis, gender, age, APACHE II, SOFA, SAPS, mortality, hypotension, alkaline phosphatase, hemoglobin, lactate, tolerance to enteral nutrition and use of propofol. Imaging study revealed pancreatic alterations in two patients with high serum lipase. CONCLUSIONS: Elevated lipase was commonly found in critical patients, it related with longer length of stay but was not accompanied by increased clinical severity or mortality. It was more frequent with parenteral nutrition. A minority of patients met the criteria of acute pancreatitis.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):370-375
DOI 10.1590/S0103-507X2008000400009
OBJECTIVE: The aim of this study was to understand the experience of family members, during a patient's stay in the intensive care unit of public and private hospitals using an approximation to the phenomenology referential. METHODS: We interviewed 27 relatives of adult patients, 10 from a public institution and 17 from a private one. RESULTS: From analyses of interviews in a public institution, four thematic categories emerged. In a private institution six categories were identified. Searching for differences and similarities, four similar thematic categories were perceived in both institutions and two categories were absent in the public hospital. CONCLUSION: There are no significant differences between categories in private and public hospitals. This indicates that family behavior and reactions to patient's admission to the ICU are not associated with social or financial aspects. However, a greater knowledge of government policies and programs is necessary, because they favor humanization by allowing family members to accompany the patient in tertiary services.
Abstract
Rev Bras Ter Intensiva. 2008;20(4):370-375
DOI 10.1590/S0103-507X2008000400009
OBJECTIVE: The aim of this study was to understand the experience of family members, during a patient's stay in the intensive care unit of public and private hospitals using an approximation to the phenomenology referential. METHODS: We interviewed 27 relatives of adult patients, 10 from a public institution and 17 from a private one. RESULTS: From analyses of interviews in a public institution, four thematic categories emerged. In a private institution six categories were identified. Searching for differences and similarities, four similar thematic categories were perceived in both institutions and two categories were absent in the public hospital. CONCLUSION: There are no significant differences between categories in private and public hospitals. This indicates that family behavior and reactions to patient's admission to the ICU are not associated with social or financial aspects. However, a greater knowledge of government policies and programs is necessary, because they favor humanization by allowing family members to accompany the patient in tertiary services.