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Case AS, Hochberg CH, Hager DN. The Role of Intermediate Care in Supporting Critically Ill Patients and Critical Care Infrastructure. Crit Care Clin 2024; 40:507-522. [PMID: 38796224 PMCID: PMC11175835 DOI: 10.1016/j.ccc.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2024]
Abstract
Intermediate care (IC) is used for patients who do not require the human and technological support of the intensive care unit (ICU) yet require more care and monitoring than can be provided on general wards. Though prevalent in many countries, there is marked variability in models of organization and staffing, as well as monitoring and interventions provided. In this article, the authors will discuss the historical background of IC, review the impact of IC on ICU and IC patient outcomes, and highlight where future studies can shed light on how to optimize IC organization and outcomes.
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Affiliation(s)
- Aaron S Case
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, 1830 East Monument Street, 5th Floor, Baltimore, MD 21287, USA
| | - Chad H Hochberg
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, 1830 East Monument Street, 5th Floor, Baltimore, MD 21287, USA
| | - David N Hager
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, 1800 Orleans Street, Zayed Tower, Suite 9121, Baltimore, MD 21287, USA.
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Campbell ML, Yarandi HN. Effectiveness of an Algorithmic Approach to Ventilator Withdrawal at the End of Life: A Stepped Wedge Cluster Randomized Trial. J Palliat Med 2024; 27:185-191. [PMID: 37594769 PMCID: PMC10825265 DOI: 10.1089/jpm.2023.0128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2023] [Indexed: 08/19/2023] Open
Abstract
Background: The transition to spontaneous breathing puts patients who are undergoing ventilator withdrawal at high risk for developing respiratory distress. A patient-centered algorithmic approach could standardize this process and meet unique patient needs because a single approach (weaning vs. one-step extubation) does not capture the needs of a heterogenous population undergoing this palliative procedure. Objectives: (1) Demonstrate that the algorithmic approach can be effective to ensure greater patient respiratory comfort compared to usual care; (2) determine differences in opioid or benzodiazepine use; (3) predict factors associated with duration of survival. Design/Settings/Measures: A stepped-wedge cluster randomized design at five sites was used. Sites crossed over to the algorithm in random order after usual care data were obtained. Patient comfort was measured with the Respiratory Distress Observation Scale© (RDOS) at baseline, at ventilator off, and every 15-minutes for an hour. Parenteral morphine and lorazepam equivalents from the onset of the process until patient death were calculated. Results: Usual care data n = 120, algorithm data n = 48. Gender and race were evenly distributed. All patients in the usual care arm underwent a one-step ventilator cessation; 58% of patients in the algorithm arm were weaned over an average of 18 ± 27 minutes as prescribed in the algorithm. Patients had significantly less respiratory distress in the intervention arm (F = 10.41, p = 0.0013, effective size [es] = 0.49). More opioids (t = -2.30, p = 0.023) and benzodiazepines (t = -2.08, p = 0.040) were given in the control arm. Conclusions: The algorithm was effective in ensuring patient respiratory comfort. Surprisingly, more medication was given in the usual care arm; however, less may be needed when distress is objectively measured (RDOS), and treatment is initiated as soon as distress develops as in the algorithm. Clinical Trial Registration number: NCT03121391.
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Qin X, Zhang W, Zhu X, Hu X, Zhou W. Early Fresh Frozen Plasma Transfusion: Is It Associated With Improved Outcomes of Patients With Sepsis? Front Med (Lausanne) 2021; 8:754859. [PMID: 34869452 PMCID: PMC8634960 DOI: 10.3389/fmed.2021.754859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 10/12/2021] [Indexed: 12/25/2022] Open
Abstract
Background: So far, no study has investigated the effects of plasma transfusion in the patients with sepsis, especially in the terms of prognosis. Therefore, we aimed to explore the association of early fresh frozen plasma (FFP) transfusion with the outcomes of patients with sepsis. Methods: We performed a cohort study using data extracted from the Medical Information Mart for Intensive Care III database (v1.4). External validation was obtained from the First Affiliated Hospital of Wenzhou Medical University, China. We adopted the Sepsis-3 criteria to extract the patients with sepsis and septic shock. The occurrence of transfusion during the first 3-days of intensive care unit (ICU) stay was regarded as early FFP transfusion. The primary outcome was 28-day mortality. We assessed the association of early FFP transfusion with the patient outcomes using a Cox regression analysis. Furthermore, we performed the sensitivity analysis, subset analysis, and external validation to verify the true strength of the results. Results: After adjusting for the covariates in the three models, respectively, the significantly higher risk of death in the FFP transfusion group at 28-days [e.g., Model 2: hazard ratio (HR) = 1.361, P = 0.018, 95% CI = 1.054–1.756] and 90-days (e.g., Model 2: HR = 1.368, P = 0.005, 95% CI = 1.099–1.704) remained distinct. Contrarily, the mortality increased significantly with the increase of FFP transfusion volume. The outcomes of the patients with sepsis with hypocoagulable state after early FFP transfusion were not significantly improved. Similar results can also be found in the subset analysis of the septic shock cohort. The results of external validation exhibited good consistency. Conclusions: Our study provides a new understanding of the rationale and effectiveness of FFP transfusion for the patients with sepsis. After recognizing the evidence of risk-benefit and cost-benefit, it is important to reduce the inappropriate use of FFP and avoid unnecessary adverse transfusion reactions.
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Affiliation(s)
- Xiaoyi Qin
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaodan Zhu
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiang Hu
- Department of Endocrine and Metabolic Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei Zhou
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Heili-Frades S, Minguez P, Mahillo Fernández I, Jiménez Hiscock L, Santos A, Heili Frades D, Carballosa de Miguel MDP, Fernández Ormaechea I, Álvarez Suárez L, Naya Prieto A, González Mangado N, Peces-Barba Romero G. Patient Management Assisted by a Neural Network Reduces Mortality in an Intermediate Care Unit. Arch Bronconeumol 2020; 56:564-570. [DOI: 10.1016/j.arbres.2019.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/24/2019] [Accepted: 11/03/2019] [Indexed: 10/25/2022]
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Hu X, Qin X, Gu X, Wang H, Zhou W. Effect of lymphocyte-to-monocyte ratio on survival in septic patients: an observational cohort study. Arch Med Sci 2020; 20:790-797. [PMID: 39050157 PMCID: PMC11264070 DOI: 10.5114/aoms.2020.92692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/30/2019] [Indexed: 07/27/2024] Open
Abstract
Introduction The purpose of the present study was to evaluate the potential relationship of lymphocyte-to-monocyte ratio (LMR) with outcomes of septic patients at intensive care unit (ICU) admission. Material and methods 3087 septic patients were included in the final cohort by using the Medical Information Mart for Intensive Care (MIMIC) database. We evaluated the association of different groups of LMRmax with 28-day survival and 1-year survival via Kaplan-Meier (K-M) analysis and Cox regression analysis. Subgroups analysis of LMRmax was performed to further explore the effect of LMRmax on survival. Results According to the optimal cut-off value, the cohort was divided into low-LMRmax and high-LMRmax groups. The 28-day and 1-year survival rates were 47.9% and 19.9%, respectively, in the low-LMRmax group, and 60.4% and 25.9%, respectively, in the high-LMRmax group. Univariate logistic regression and K-M analyses revealed that the 28-day and 1-year survival rates of the high-LMRmax group were higher than those of the low-LMRmax group (both p < 0.001). A subgroup analysis of LMRmax identified a significant stepwise decrease in the risk of death at 28 days and 1 year from group 1 to group 4 (LMRmax increased gradually) after adjustment for multiple variables. Conclusions We report for the first time that a lower LMRmax value is independently predictive of a poor prognosis in septic patients. Therefore, as an inexpensive and readily available indicator, LMRmax may facilitate stratification of prognosis in septic patients.
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Affiliation(s)
- Xiang Hu
- Department of Endocrine and Metabolic Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaoyi Qin
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaolong Gu
- Department of Pneumology, Ningbo Yinzhou No. 2 Hospital, Ningbo, Zhejiang, China
| | - Hailong Wang
- Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wei Zhou
- Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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Brusca RM, Simpson CE, Sahetya SK, Noorain Z, Tanykonda V, Stephens RS, Needham DM, Hager DN. Performance of Critical Care Outcome Prediction Models in an Intermediate Care Unit. J Intensive Care Med 2019; 35:1529-1535. [PMID: 31635507 DOI: 10.1177/0885066619882675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Intermediate care units (IMCUs) are heterogeneous in design and operation, which makes comparative effectiveness studies challenging. A generalizable outcome prediction model could improve such comparisons. However, little is known about the performance of critical care outcome prediction models in the intermediate care setting. The purpose of this study is to evaluate the performance of the Acute Physiology and Chronic Health Evaluation version II (APACHE II), Simplified Acute Physiology Score version II (SAPS II) and version 3 (SAPS 3), and Mortality Probability Model version III (MPM0III) in patients admitted to a well-characterized IMCU. MATERIALS AND METHODS In the IMCU of an academic medical center (July to December 2012), the discrimination and calibration of each outcome prediction model were evaluated using the area under the receiver-operating characteristic and Hosmer-Lemeshow goodness-of-fit test, respectively. Standardized mortality ratios (SMRs) were also calculated. RESULTS The cohort included data from 628 unique IMCU admissions with an inpatient mortality rate of 8.3%. All models exhibited good discrimination, but only the SAPS II and MPM0III were well calibrated. While the APACHE II and SAPS 3 both markedly overestimated mortality, the SMR for the SAPS II and MPM0III were 0.91 and 0.91, respectively. CONCLUSIONS The SAPS II and MPM0III exhibited good discrimination and calibration, with slight overestimation of mortality. Each model should be further evaluated in multicenter studies of patients in the intermediate care setting.
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Affiliation(s)
- Rebeccah M Brusca
- Department of Medicine, 1500Johns Hopkins University, Baltimore, MD, USA
| | - Catherine E Simpson
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, 1500Johns Hopkins University, Baltimore, MD, USA
| | - Sarina K Sahetya
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, 1500Johns Hopkins University, Baltimore, MD, USA
| | - Zeba Noorain
- 29099Bangalore Medical College and Research Institute, Bangalore, India
| | - Varshitha Tanykonda
- Department of Medicine, 12227University of Connecticut School of Medicine, Farmington, CT, USA
| | - R Scott Stephens
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, 1500Johns Hopkins University, Baltimore, MD, USA
| | - Dale M Needham
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, 1500Johns Hopkins University, Baltimore, MD, USA.,Armstrong Institute for Patient Safety, 1466John Hopkins University, Baltimore, MD, USA.,Outcomes After Critical Illness and Surgery (OACIS) Group, 1466Johns Hopkins University, Baltimore, MD, USA.,Department of Physical Medicine and Rehabilitation, School of Medicine, 1466Johns Hopkins University, Baltimore, MD, USA
| | - David N Hager
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, 1500Johns Hopkins University, Baltimore, MD, USA
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Jahn M, Rekowski J, Gerken G, Kribben A, Canbay A, Katsounas A. The predictive performance of SAPS 2 and SAPS 3 in an intermediate care unit for internal medicine at a German university transplant center; A retrospective analysis. PLoS One 2019; 14:e0222164. [PMID: 31553738 PMCID: PMC6760764 DOI: 10.1371/journal.pone.0222164] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 08/16/2019] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To analyze and compare the performance of the Simplified-Acute-Physiology-Score (SAPS) 2 and SAPS 3 among intermediate care patients with internal disorders. MATERIALS AND METHODS We conducted a retrospective single-center analysis in patients (n = 305) admitted to an intermediate-care-unit (ImCU) for internal medicine at the University Hospital Essen, Germany. We employed and compared the SAPS 2 vs. the SAPS 3 scoring system for the assessment of disease severity and prediction of mortality rates among patients admitted to the ImCU within an 18-month period. Both scores, which utilize parameters recorded at admission to the intensive-care-unit (ICU), represent the most widely applied scoring systems in European intensive care medicine. The area-under-the-receiver-operating-characteristic-curve (AUROC) was used to evaluate the SAPS 2 and SAPS 3 discrimination performance. Ultimately, standardized-mortality-ratios (SMRs) were calculated alongside their respective 95%-confidence-intervals (95% CI) in order to determine the observed-to-expected death ratio and calibration belt plots were generated to evaluate the SAPS 2 and SAPS 3 calibration performance. RESULTS Both scores provided acceptable discrimination performance, i.e., the AUROC was 0.71 (95% CI, 0.65-0.77) for SAPS 2 and 0.77 (95% CI, 0.72-0.82) for SAPS 3. Against the observed in-hospital mortality of 30.2%, SAPS 2 showed a weak performance with a predicted mortality of 17.4% and a SMR of 1.74 (95% CI, 1.38-2.09), especially in association with liver diseases and/or sepsis. SAPS 3 performed accurately, resulting in a predicted mortality of 29.9% and a SMR of 1.01 (95% CI, 0.8-1.21). Based on Calibration belt plots, SAPS 2 showed a poor calibration-performance especially in patients with low mortality risk (P<0.001), while SAPS 3 exhibited a highly accurate calibration performance (P = 0.906) across all risk levels. CONCLUSIONS In our study, the SAPS 3 exhibited high accuracy in prediction of mortality in ImCU patients with internal disorders. In contrast, the SAPS 2 underestimated mortality particularly in patients with liver diseases and sepsis.
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Affiliation(s)
- Michael Jahn
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Jan Rekowski
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Guido Gerken
- Department of Gastroenterology and Hepatology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Andreas Kribben
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Ali Canbay
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital Magdeburg, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Antonios Katsounas
- Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital Magdeburg, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
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Noninvasive ventilation during weaning from prolonged mechanical ventilation. Pulmonology 2019; 25:328-333. [PMID: 31519534 DOI: 10.1016/j.pulmoe.2019.07.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/17/2019] [Accepted: 07/23/2019] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Non invasive ventilation (NIV) is currently employed for weaning from invasive ventilation (IMV) in the acute setting but its use for weaning from prolonged ventilation is still occasional and not standardized. We wanted to evaluate whether a combined protocol of NIV and decannulation in tracheostomized patients needing prolonged mechanical ventilation was feasible and what would be the one-year outcome. METHODS We studied patients still dependent from invasive mechanical ventilation with the following inclusion criteria: a) tolerance of at least 8h of unsupported breathing, b) progressive hypercapnia/acidosis after invasive ventilation discontinuation, c) good adaptation to NIV, d) favorable criteria for decannulation. These patients were switched from IMV to NIV and decannulated; then they were discharged on home NIV and followed-up for one year in order to evaluate survival and complications rate. RESULTS Data from patients consecutively admitted to a weaning unit were prospectively collected between 2005 and 2018. Out of 587 patients admitted over that period, 341 were liberated from prolonged mechanical ventilation. Fifty-one out of 147 unweaned patients (35%) were eligible for the protocol but only 46 were enrolled. After a mean length of stay of 35 days they were decannulated and discharged on domiciliary NIV. After one year, 38 patients were still alive (survival rate 82%) and 37 were using NIV with good adherence (only one patient was switched again to invasive ventilation). CONCLUSIONS NIV applied to patients with failed weaning from prolonged IMV is feasible and can facilitate the decannulation process. Patients successfully completing this process show good survival rates and few complications.
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A Proposal for an Intermediate Care Unit-Quality Measurement Framework. Crit Care Res Pract 2018; 2018:4560718. [PMID: 30151281 PMCID: PMC6087599 DOI: 10.1155/2018/4560718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/01/2018] [Accepted: 06/24/2018] [Indexed: 01/09/2023] Open
Abstract
Rationale, Aims, and Objectives. The Intermediate Care Unit (IMCU) is a hospital unit which is logistically situated between the hospital ward and the Intensive Care Unit (ICU). There is debate regarding the value of the IMCU. Understanding its value is compromised by the lack of adequate quality indicators. Therefore, this study identifies currently used IMCU indicators and evaluates their usefulness. Methods. Through a systematic literature search, currently used quality indicators were identified and evaluated for their importance using a proposed IMCU-specific quality measurement framework. Results. From 4034 titles and abstracts, 168 articles were selected for full-text review. Of these, 22 articles were included, which reported IMCU quality at the level of the IMCU (n = 12), the ICU (n = 5), both IMCU and ICU (n = 3) or hospital level (n = 2). At the IMCU, the IMCU mortality (n = 16), discharge-to-ICU rate (n = 7), in-hospital IMCU mortality (n = 7), and length of stay (n = 6) were most frequently reported. Three studies compared the effect of different structures of the IMCU on its utilization or hospital outcome. Conclusions. Current focus in IMCU quality research is towards measuring quality at the IMCU itself. Since the influence of the structure of IMCUs on its utilization and its effects on hospital outcome are only rarely investigated, attention should shift towards these important issues in further research. The proposed IMCU quality measurement framework can thereby serve as a helpful tool.
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Hager DN, Tanykonda V, Noorain Z, Sahetya SK, Simpson CE, Lucena JF, Needham DM. Hospital mortality prediction for intermediate care patients: Assessing the generalizability of the Intermediate Care Unit Severity Score (IMCUSS). J Crit Care 2018; 46:94-98. [PMID: 29804039 DOI: 10.1016/j.jcrc.2018.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/04/2018] [Accepted: 05/15/2018] [Indexed: 01/09/2023]
Abstract
PURPOSE The Intermediate Care Unit Severity Score (IMCUSS) is an easy to calculate predictor of in-hospital death, and the only such tool developed for patients in the intermediate care setting. We sought to examine its external validity. MATERIALS AND METHODS Using data from patients admitted to the intermediate care unit (IMCU) of an urban academic medical center from July to December of 2012, model discrimination and calibration for predicting in-hospital death were assessed using the area under the receiver operating characteristic (AUROC) and the Hosmer-Lemeshow goodness-of-fit chi-squared (HL GOF X2) test, respectively. The standardized mortality ratio (SMR) with 95% confidence intervals (95% CI) was also calculated. RESULTS The cohort included data from 628 unique admissions to the IMCU. Overall hospital mortality was 8.3%. The median IMCUSS was 10 (Interquartile Range: 0-16), with 229 (36%) patients having a score of zero. The AUROC for the IMCUSS was 0.72 (95% CI: 0.64-0.78), the HL GOF X2 = 30.7 (P < 0.001), and the SMR was 1.22 (95% CI: 0.91-1.60). CONCLUSIONS The IMCUSS exhibited acceptable discrimination, poor calibration, and underestimated mortality. Other centers should assess the performance of the IMCUSS before adopting its use.
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Affiliation(s)
- David N Hager
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States.
| | | | - Zeba Noorain
- Bangalore Medical College and Research Institute, Bangalore, India
| | - Sarina K Sahetya
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States.
| | - Catherine E Simpson
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States.
| | - Juan Felipe Lucena
- Division of Intermediate Care and Hospitalists Unit, Department of Internal Medicine, Clinica Universidad de Navarra, Pamplona, Navarra, Spain.
| | - Dale M Needham
- Division of Pulmonary & Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States; Armstrong Institute for Patient Safety, John Hopkins University, Baltimore, MD, United States; Outcomes After Critical Illness and Surgery (OACIS) Group, Johns Hopkins University, Baltimore, MD, United States; Department of Physical Medicine and Rehabilitation, School of Medicine, Johns Hopkins University, Baltimore, MD, United States.
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Simpson CE, Sahetya SK, Bradsher RW, Scholten EL, Bain W, Siddique SM, Hager DN. Outcomes of Emergency Medical Patients Admitted to an Intermediate Care Unit With Detailed Admission Guidelines. Am J Crit Care 2017; 26:e1-e10. [PMID: 27965236 DOI: 10.4037/ajcc2017253] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND An important, but not well characterized, population receiving intermediate care is that of medical patients admitted directly from the emergency department. OBJECTIVE To characterize emergency medical patients and their outcomes when admitted to an intermediate care unit with clearly defined admission guidelines. METHODS Demographic data, admitting diagnoses, illness severity, comorbid conditions, lengths of stay, and hospital mortality were characterized for all emergency medical patients admitted directly to an intermediate care unit from July through December 2012. RESULTS A total of 317 unique patients were admitted (mean age, 54 [SD, 16] years). Most patients were admitted with respiratory (26.5%) or cardiac (17.0%) syndromes. The mean (SD) Acute Physiology and Chronic Health Evaluation score version II, Simplified Acute Physiology Score version II, and Charlson Comorbidity Index were 15.6 (6.5), 20.7 (11.8), and 2.7 (2.3), respectively. Severity of illness and length of stay were significantly different for patients who required intensive care within 24 hours of admission (n = 16) or later (n = 25), patients who continued with inter mediate care for more than 24 hours (n = 247), and patients who were downgraded or discharged in less than 24 hours (n = 29). Overall hospital mortality was 4.4% (14 deaths). CONCLUSIONS Emergency medical patients with moderate severity of illness and comorbidity can be admitted to an intermediate level of care with relatively infrequent transfer to intensive care and relatively low mortality.
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Affiliation(s)
- Catherine E Simpson
- Catherine E. Simpson and Sarina K. Sahetya are fellows, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. Robert W. Bradsher III is an instructor, Division of Internal Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. Eric L. Scholten is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, California. William Bain is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania. Shazia M. Siddique is a fellow, Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University
| | - Sarina K Sahetya
- Catherine E. Simpson and Sarina K. Sahetya are fellows, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. Robert W. Bradsher III is an instructor, Division of Internal Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. Eric L. Scholten is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, California. William Bain is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania. Shazia M. Siddique is a fellow, Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University
| | - Robert W Bradsher
- Catherine E. Simpson and Sarina K. Sahetya are fellows, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. Robert W. Bradsher III is an instructor, Division of Internal Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. Eric L. Scholten is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, California. William Bain is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania. Shazia M. Siddique is a fellow, Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University
| | - Eric L Scholten
- Catherine E. Simpson and Sarina K. Sahetya are fellows, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. Robert W. Bradsher III is an instructor, Division of Internal Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. Eric L. Scholten is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, California. William Bain is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania. Shazia M. Siddique is a fellow, Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University
| | - William Bain
- Catherine E. Simpson and Sarina K. Sahetya are fellows, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. Robert W. Bradsher III is an instructor, Division of Internal Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. Eric L. Scholten is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, California. William Bain is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania. Shazia M. Siddique is a fellow, Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University
| | - Shazia M Siddique
- Catherine E. Simpson and Sarina K. Sahetya are fellows, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland. Robert W. Bradsher III is an instructor, Division of Internal Medicine, University of Tennessee Health Science Center, Memphis, Tennessee. Eric L. Scholten is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California, San Diego, California. William Bain is a fellow, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania. Shazia M. Siddique is a fellow, Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania. David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University
| | - David N Hager
- David N. Hager is an assistant professor, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University. David N. Hager, MD, PhD, Johns Hopkins University, Sheikh Zayed Tower, Ste 9121, 1800 Orleans St, Baltimore, MD 21287 (e-mail: )
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Yoo EJ, Damaghi N, Shakespeare WG, Sherman MS. The effect of physician staffing model on patient outcomes in a medical progressive care unit. J Crit Care 2015; 32:68-72. [PMID: 26777775 DOI: 10.1016/j.jcrc.2015.12.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/30/2015] [Accepted: 12/02/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE Although evidence supports the impact of intensivist physician staffing in improving intensive care unit (ICU) outcomes, the optimal coverage for progressive care units (PCU) is unknown. We sought to determine how physician staffing models influence outcomes for intermediate care patients. MATERIALS AND METHODS We conducted a retrospective observational comparison of patients admitted to the medical PCU of an academic hospital during 12-month periods of high-intensity and low-intensity staffing. RESULTS A total of 318 PCU patients were eligible for inclusion (143 high-intensity and 175 low-intensity). We found that low-intensity patients were more often stepped up from the emergency department and floor, whereas high-intensity patients were ICU transfers (61% vs 42%, P = .001). However, Mortality Probability Model scoring was similar between the 2 groups. In adjusted analysis, there was no association between intensity of staffing and hospital mortality (odds ratio, 0.84; 95% confidence interval, 0.36-1.99; P = .69) or PCU mortality (odds ratio, 0.96; 95% confidence interval, 0.38-2.45; P = .69). There was also no difference in subsequent ICU admission rates or in PCU length of stay. CONCLUSIONS We found no evidence that high-intensity intensivist physician staffing improves outcomes for intermediate care patients. In a strained critical care system, our study raises questions about the role of the intensivist in the graded care options between intensive and conventional ward care.
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Affiliation(s)
- E J Yoo
- Division of Pulmonary, Critical Care, and Sleep Medicine, Drexel University College of Medicine, Philadelphia, PA; Department of Medicine, Drexel University College of Medicine, Philadelphia, PA.
| | - N Damaghi
- Department of Medicine, Drexel University College of Medicine, Philadelphia, PA
| | - W G Shakespeare
- Department of Medicine, Drexel University College of Medicine, Philadelphia, PA
| | - M S Sherman
- Division of Pulmonary, Critical Care, and Sleep Medicine, Drexel University College of Medicine, Philadelphia, PA; Department of Medicine, Drexel University College of Medicine, Philadelphia, PA
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Martinez-Urbistondo D, Alegre F, Carmona-Torre F, Huerta A, Fernandez-Ros N, Landecho MF, García-Mouriz A, Núñez-Córdoba JM, García N, Quiroga J, Lucena JF. Mortality Prediction in Patients Undergoing Non-Invasive Ventilation in Intermediate Care. PLoS One 2015; 10:e0139702. [PMID: 26436420 PMCID: PMC4593538 DOI: 10.1371/journal.pone.0139702] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/15/2015] [Indexed: 11/23/2022] Open
Abstract
Background Intermediate Care Units (ImCU) have become an alternative scenario to perform Non-Invasive Ventilation (NIV). The limited number of prognostic studies in this population support the need of mortality prediction evaluation in this context. Objective The objective of this study is to analyze the performance of Simplified Acute Physiology Score (SAPS) II and 3 in patients undergoing NIV in an ImCU. Additionally, we searched for new variables that could be useful to customize these scores, in order to improve mortality prediction. Design Cohort study with prospectively collected data from all patients admitted to a single center ImCU who received NIV. The SAPS II and 3 scores with their respective predicted mortality rates were calculated. Discrimination and calibration were evaluated by calculating the area under the receiver operating characteristic curve (AUC) and with the Hosmer-Lemeshow goodness of fit test for the models, respectively. Binary logistic regression was used to identify new variables to customize the scores for mortality prediction in this setting. Patients The study included 241 patients consecutively admitted to an ImCU staffed by hospitalists from April 2006 to December 2013. Key Results The observed in-hospital mortality was 32.4% resulting in a Standardized Mortality Ratio (SMR) of 1.35 for SAPS II and 0.68 for SAPS 3. Mortality discrimination based on the AUC was 0.73 for SAPS II and 0.69 for SAPS 3. Customized models including immunosuppression, chronic obstructive pulmonary disease (COPD), acute pulmonary edema (APE), lactic acid, pCO2 and haemoglobin levels showed better discrimination than old scores with similar calibration power. Conclusions These results suggest that SAPS II and 3 should be customized with additional patient-risk factors to improve mortality prediction in patients undergoing NIV in intermediate care.
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Affiliation(s)
- Diego Martinez-Urbistondo
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
| | - Félix Alegre
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
| | - Francisco Carmona-Torre
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
| | - Ana Huerta
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
| | - Nerea Fernandez-Ros
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
| | - Manuel Fortún Landecho
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | | | - Jorge M. Núñez-Córdoba
- Clínica Universidad de Navarra, Division of Biostatistics, Research Support Service, Central Clinical Trials Unit, Pamplona, Spain
- Department of Preventive Medicine and Public Health, Medical School, Universidad de Navarra, Pamplona, Spain
- Epidemiology and Public Health Area, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Nicolás García
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
| | - Jorge Quiroga
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Pamplona, Spain
| | - Juan Felipe Lucena
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Pamplona, Spain
- * E-mail:
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Campbell ML, Yarandi HN, Mendez M. A Two-Group Trial of a Terminal Ventilator Withdrawal Algorithm: Pilot Testing. J Palliat Med 2015; 18:781-5. [DOI: 10.1089/jpm.2015.0111] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - Michael Mendez
- School of Medicine, Wayne State University, Detroit, Michigan
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Design and Performance of a New Severity Score for Intermediate Care. PLoS One 2015; 10:e0130989. [PMID: 26121578 PMCID: PMC4485470 DOI: 10.1371/journal.pone.0130989] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 05/26/2015] [Indexed: 02/06/2023] Open
Abstract
Background Application of illness-severity scores in Intermediate Care Units (ImCU) shows conflicting results. The aim of the study is to design a severity-of-illness score for patients admitted to an ImCU. Methods We performed a retrospective observational study in a single academic medical centre in Pamplona, Spain. Demographics, past medical history, reasons for admission, physiological parameters at admission and during the first 24 hours of ImCU stay, laboratory variables and survival to hospital discharge were recorded. Logistic regression analysis was performed to identify variables for mortality prediction. Results A total of 743 patients were included. The final multivariable model (derivation cohort = 554 patients) contained only 9 variables obtained at admission to the ImCU: previous length of stay 7 days (6 points), health-care related infection (11), metastatic cancer (9), immunosuppressive therapy (6), Glasgow comma scale 12 (10), need of non-invasive ventilation (14), platelets 50000/mcL (9), urea 0.6 g/L (10) and bilirubin 4 mg/dL (9). The ImCU severity score (ImCUSS) is generated by summing the individual point values, and the formula for determining the expected in-hospital mortality risk is: eImCUSS points*0.099 – 4,111 / (1 + eImCUSS points*0.099 – 4,111). The model showed adequate calibration and discrimination. Performance of ImCUSS (validation cohort = 189 patients) was comparable to that of SAPS II and 3. Hosmer-Lemeshow goodness-of-fit C test was χ2 8.078 (p=0.326) and the area under receiver operating curve 0.802. Conclusions ImCUSS, specially designed for intermediate care, is based on easy to obtain variables at admission to ImCU. Additionally, it shows a notable performance in terms of calibration and mortality discrimination.
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Romero-Ganuza J, García-Forcada A, Vargas E, Gambarrutta C. An intermediate respiratory care unit for spinal cord-injured patients. A retrospective study. Spinal Cord 2015; 53:552-6. [PMID: 25777333 DOI: 10.1038/sc.2015.10] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 01/05/2015] [Accepted: 01/08/2015] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Patients with cervical spinal cord injury (SCI) may need prolonged mechanical ventilation (MV) and a long stay in the Intensive Care Unit. An intermediate respiratory care unit (IRCU) can shorten that stay, optimizing hospital resources. The aim of our work has been to evaluate the activity of such a unit in our hospital. METHODS This is a descriptive retrospective study based on the data of patients with SCI and respiratory failure discharged from our IRCU between 1 July 2010 and 28 February 2013. RESULTS We have analysed data from 146 patients with SCI, adding up to 228 admissions (68 first admissions and 160 readmissions due to complications or scheduled review visits). Sixty-three out of the 68 newly admitted patients survived their first admission (92.6%). Length of hospitalization was 195.6±110.4 days, 22 were admitted to monitor their respiratory status and 46 were on MV on admission. Of these, 26 (38.2%) were admitted to attempt weaning from the respirator and 20 (29.4%) to enter a programme of permanent respiratory support. Weaning was successful in 23 out of 26 patients (88.4%), the process taking 47.2±49.3 days. Forty of them (58.8%) were discharged to their home. CONCLUSIONS An IRCU can manage a substantial number of severe SCI patients who need MV, and an important number of them can be weaned from the respirator. It may also achieve a good success rate in the integration of MV-dependent patients within family and society.
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Affiliation(s)
- J Romero-Ganuza
- Intermediate Respiratory Care Unit, Internal Medicine Service, Toledo, Spain
| | - A García-Forcada
- Intermediate Respiratory Care Unit, Internal Medicine Service, Toledo, Spain
| | - E Vargas
- Rehabilitation Medicine Service, National Hospital of Paraplegics, Toledo, Spain
| | - C Gambarrutta
- Intermediate Respiratory Care Unit, Internal Medicine Service, Toledo, Spain
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Abstract
Stepdown beds provide an intermediate level of care for patients with requirements somewhere between that of the general ward and the intensive care unit. Models of care include incorporation of stepdown beds into intensive care units, stand-alone units, or incorporation of beds into standard wards. Stepdown beds may be used to provide a higher level of care for patients deteriorating on a ward ("step-up"), a lower level of care for patients transitioning out of intensive care ("stepdown") or a lateral transfer of care from a recovery room for postoperative patients. These units are one possible strategy to improve critical care cost-effectiveness and patient flow without compromising quality, but these potential benefits remain primarily theoretical as few patient-level studies provide concrete evidence. This narrative review provides a general overview of the theory of stepdown beds in the care of hospitalized patients and a summary of what is known about their impact on patient flow and outcomes and highlights areas for future research.
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Affiliation(s)
- Meghan Prin
- 1 Department of Anesthesiology, Columbia University, New York, New York
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Serum lipid profile, cytokine production, and clinical outcome in patients with severe sepsis. J Crit Care 2014; 29:723-7. [DOI: 10.1016/j.jcrc.2014.04.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 03/28/2014] [Accepted: 04/21/2014] [Indexed: 02/04/2023]
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Seak CJ, Ng CJ, Yen DHT, Wong YC, Hsu KH, Seak JCY, Seak CK. Performance assessment of the Simplified Acute Physiology Score II, the Acute Physiology and Chronic Health Evaluation II score, and the Sequential Organ Failure Assessment score in predicting the outcomes of adult patients with hepatic portal venous gas in the ED. Am J Emerg Med 2014; 32:1481-4. [PMID: 25308825 DOI: 10.1016/j.ajem.2014.09.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/02/2014] [Accepted: 09/09/2014] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE This study aims to evaluate the performance of Simplified Acute Physiology Score II (SAPS II), the Acute Physiology and Chronic Health Evaluation II (APACHE II) score, and the Sequential Organ Failure Assessment (SOFA) score for predicting illness severity and the mortality of adult hepatic portal venous gas (HPVG) patients presenting to the emergency department (ED). This will assist emergency physicians in risk stratification. METHODS Data for 48 adult HPVG patients who visited our ED between December 2009 and December 2013 were analyzed. The SAPS II, APACHE II score, and SOFA score were calculated based on the worst laboratory values in the ED. The probability of death was calculated for each patient based on these scores. The ability of the SAPS II, APACHE II score, and SOFA score to predict group mortality was assessed by using receiver operating characteristic curve analysis and calibration analysis. RESULTS The sensitivity, specificity, and accuracy were 92.6%,71.4%, and 83.3%, respectively, for the SAPS II method; 77.8%, 81%, and 79.2%, respectively, for the APACHE II scoring system, and 77.8%, 76.2%, and 79.2%, respectively, for the SOFA score. In the receiver operating characteristic curve analysis, the areas under the curve for the SAPS II, APACHE II scoring system, and SOFA score were 0.910, 0.878, and 0.809, respectively. CONCLUSION This is one of the largest series performed in a population of adult HPVG patients in the ED. The results from the present study showed that SAPS II is easier and more quickly calculated than the APACHE II and more superior in predicting the mortality of ED adult HPVG patients than the SOFA. We recommend that the SAPS II be used for outcome prediction and risk stratification in adult HPVG patients in the ED.
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Affiliation(s)
- Chen-June Seak
- Department of Emergency Medicine, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan; Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chip-Jin Ng
- Department of Emergency Medicine, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - David Hung-Tsang Yen
- Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Emergency Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yon-Cheong Wong
- College of Medicine, Chang Gung University, Taoyuan, Taiwan; Division of Emergency and Critical Care Radiology, Department of Medical Imaging and Intervention, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Kuang-Hung Hsu
- Laboratory for Epidemiology, Department of Health Care Management, and Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.
| | | | - Chen-Ken Seak
- Sarawak General Hospital, Kuching, Sarawak, Malaysia
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Linnér A, Darenberg J, Sjölin J, Henriques-Normark B, Norrby-Teglund A. Clinical efficacy of polyspecific intravenous immunoglobulin therapy in patients with streptococcal toxic shock syndrome: a comparative observational study. Clin Infect Dis 2014; 59:851-7. [PMID: 24928291 DOI: 10.1093/cid/ciu449] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Streptococcal toxic shock syndrome (STSS) and necrotizing fasciitis are the 2 most severe invasive manifestations caused by group A Streptococcus (GAS). Intravenous immunoglobulin (IVIG) therapy has been suggested as adjunctive treatment with a beneficial effect on mortality. However the clinical evidence is limited. Here we aim to further document the clinical efficacy of administered IVIG therapy in a comparative observational study of well-defined patients with STSS. METHODS The effect of IVIG was evaluated in patients with STSS prospectively identified in a nationwide Swedish surveillance study conducted between April 2002 and December 2004. Detailed data on symptoms, severity of disease, treatment, and outcome were obtained from 67 patients. Crude and adjusted analyses with logistic regression were performed. RESULTS Twenty-three patients received IVIG therapy compared with 44 who did not. No significant difference in comorbidities, severity of disease, organ failures, or sex was seen, but the IVIG group was slightly younger and had a higher degree of necrotizing fasciitis (56% vs 14%). The primary endpoint was 28-day survival. Adjusted analysis revealed that factors influencing survival in STSS were Simplified Acute Physiology Score II (odds ratio [OR], 1.1; P = .007), clindamycin (OR, 8.6; P = .007), and IVIG (OR, 5.6; P = .030). CONCLUSIONS This comparative observational study of prospectively identified STSS patients demonstrates that both IVIG and clindamycin therapy contribute to a significantly improved survival in STSS.
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Affiliation(s)
- Anna Linnér
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Stockholm
| | | | - Jan Sjölin
- Department of Infectious Diseases, Uppsala University
| | - Birgitta Henriques-Normark
- Public Health Agency of Sweden, Solna Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm Karolinska University Hospital, Solna, Sweden
| | - Anna Norrby-Teglund
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Stockholm
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Righi S, Santambrogio L, Monsagrati A, Saliu M, Locati L, Radrizzani D. Clinical Evaluation of Neutrophil CD64 as a Diagnostic Marker of Infection in a Polyvalent Intensive Care Unit. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2014. [DOI: 10.1097/ipc.0b013e31828f4b6a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lucena JF, Alegre F, Martinez-Urbistondo D, Landecho MF, Huerta A, García-Mouriz A, García N, Quiroga J. Performance of SAPS II and SAPS 3 in intermediate care. PLoS One 2013; 8:e77229. [PMID: 24130860 PMCID: PMC3793951 DOI: 10.1371/journal.pone.0077229] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 08/31/2013] [Indexed: 11/23/2022] Open
Abstract
Objective The efficacy and reliability of prognostic scores has been described extensively for intensive care, but their role for predicting mortality in intermediate care patients is uncertain. To provide more information in this field, we have analyzed the performance of the Simplified Acute Physiology Score (SAPS) II and SAPS 3 in a single center intermediate care unit (ImCU). Materials and Methods Cohort study with prospectively collected data from all patients admitted to a single center ImCU in Pamplona, Spain, from April 2006 to April 2012. The SAPS II and SAPS 3 scores with respective predicted mortality rates were calculated according to standard coefficients. Discrimination was evaluated by calculating the area under receiver operating characteristic curve (AUROC) and calibration with the Hosmer-Lemeshow goodness of fit test. Standardized mortality ratios (SMR) with 95% confidence interval (95% CI) were calculated for each model. Results The study included 607 patients. The observed in-hospital mortality was 20.1% resulting in a SMR of 0.87 (95% CI 0.73-1.04) for SAPS II and 0.56 (95% CI 0.47-0.67) for SAPS 3. Both scores showed acceptable discrimination, with an AUROC of 0.76 (95% CI 0.71-0.80) for SAPS II and 0.75 (95% CI 0.71- 0.80) for SAPS 3. Calibration curves showed similar performance based on Hosmer-Lemeshow goodness of fit C-test: (X2=12.9, p=0.113) for SAPS II and (X2=4.07, p=0.851) for SAPS 3. Conclusions Although both scores overpredicted mortality, SAPS II showed better discrimination for patients admitted to ImCU in terms of SMR.
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Affiliation(s)
- Juan F. Lucena
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
- * E-mail:
| | - Félix Alegre
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
| | - Diego Martinez-Urbistondo
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
| | - Manuel F. Landecho
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
| | - Ana Huerta
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
| | | | - Nicolás García
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
| | - Jorge Quiroga
- Clínica Universidad de Navarra, Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Navarra, Pamplona, Spain
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Lucena JF, Alegre F, Rodil R, Landecho MF, García-Mouriz A, Marqués M, Aquerreta I, García N, Quiroga J. Results of a retrospective observational study of intermediate care staffed by hospitalists: impact on mortality, co-management, and teaching. J Hosp Med 2012; 7:411-5. [PMID: 22271454 DOI: 10.1002/jhm.1905] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 11/10/2011] [Accepted: 11/27/2011] [Indexed: 11/11/2022]
Abstract
BACKGROUND Hospitalized patients are complex and institutions have to face the high cost of critical care and the limited resources of the ward. Intermediate care appears as an attractive strategy to provide rational care according to patient needs. It is an interesting scenario to expand co-management and teaching. STUDY DESIGN Retrospective observational study. SETTING Intermediate care unit (ImCU) of a single academic hospital. PATIENTS AND METHODS 456 patients admitted from April 2006 to April 2010 were included in the study. Demographics, admission physiologic parameters and in-hospital mortality were recorded. We used the Simplified Acute Physiology Score II (SAPS II) as prognostic score system. Co-management with medical and surgical teams, and the number of training residents were evaluated. RESULTS In-hospital mortality was 20.6%, whereas the expected mortality was 23.2% based on SAPS II score. The correlation between SAPS II predicted and observed death rates was accurate and statistically significant (Rho = 1.0, p < 0.001). Co-management was performed with several medical and surgical teams, with an increase in perioperative comanagement of 22.7% (p = 0.014). The number of training residents in ImCU increased from 4.3% to 30.4% (p = 0.002) CONCLUSIONS An ImCU led by hospitalists showed encouraging results regarding patient survival and SAPS II is an useful tool for prognostic evaluation in this population. Intermediate care serves as an expansion of role for hospitalists; and clinicians, trainees and patients may benefit from co-management and teaching opportunities at this unique level of care.
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Affiliation(s)
- Juan Felipe Lucena
- Department of Internal Medicine, Division of Intermediate Care and Hospitalists Unit, Clínica Universidad de Navarra, Pamplona, Spain.
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Duque S, Freitas P, Silvestre J, Fernandes L, Pinto M, Sousa A, Batalha V, Campos L. Prognostic factors of elderly patients admitted in a medical intermediate care unit. Eur Geriatr Med 2011. [DOI: 10.1016/j.eurger.2011.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Delirium in patients admitted to a step-down unit: Analysis of incidence and risk factors. J Crit Care 2010; 25:136-43. [DOI: 10.1016/j.jcrc.2009.07.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Revised: 06/19/2009] [Accepted: 07/05/2009] [Indexed: 11/19/2022]
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Abboud I, Lerolle N, Urien S, Tadié JM, Leviel F, Fagon JY, Faisy C. Pharmacokinetics of epinephrine in patients with septic shock: modelization and interaction with endogenous neurohormonal status. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2009; 13:R120. [PMID: 19622169 PMCID: PMC2750169 DOI: 10.1186/cc7972] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 06/26/2009] [Accepted: 07/21/2009] [Indexed: 11/28/2022]
Abstract
Introduction In septic patients, an unpredictable response to epinephrine may be due to pharmacodynamic factors or to non-linear pharmacokinetics. The purpose of this study was to investigate the pharmacokinetics of epinephrine and its determinants in patients with septic shock. Methods Thirty-eight consecutive adult patients with septic shock were prospectively recruited immediately before epinephrine infusion. A baseline blood sample (C0) was taken to assess endogenous epinephrine, norepinephrine, renin, aldosterone, and plasma cortisol levels before epinephrine infusion. At a fixed cumulative epinephrine dose adjusted to body weight and under steady-state infusion, a second blood sample (C1) was taken to assess epinephrine and norepinephrine concentrations. Data were analyzed using the nonlinear mixed effect modeling software program NONMEM. Results Plasma epinephrine concentrations ranged from 4.4 to 540 nmol/L at steady-state infusion (range 0.1 to 7 mg/hr; 0.026 to 1.67 μg/kg/min). A one-compartment model adequately described the data. Only body weight (BW) and New Simplified Acute Physiologic Score (SAPSII) at intensive care unit admission significantly influenced epinephrine clearance: CL (L/hr) = 127 × (BW/70)0.60 × (SAPS II/50)-0.67. The corresponding half-life was 3.5 minutes. Endogenous norepinephrine plasma concentration significantly decreased during epinephrine infusion (median (range) 8.8 (1 – 56.7) at C0 vs. 4.5 (0.3 – 38.9) nmol/L at C1, P < 0.001). Conclusions Epinephrine pharmacokinetics is linear in septic shock patients, without any saturation at high doses. Basal neurohormonal status does not influence epinephrine pharmacokinetics. Exogenous epinephrine may alter the endogenous norepinephrine metabolism in septic patients.
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Affiliation(s)
- Imad Abboud
- Medical Intensive Care Unit, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris, Université Paris - Descartes, Paris, France.
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Cosentini R, Folli C, Cazzaniga M, Aliberti S, Piffer F, Grazioli L, Milani G, Pappalettera M, Arioli M, Tardini F, Brambilla AM. Usefulness of simplified acute physiology score II in predicting mortality in patients admitted to an emergency medicine ward. Intern Emerg Med 2009; 4:241-7. [PMID: 19387793 DOI: 10.1007/s11739-009-0250-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 03/24/2009] [Indexed: 10/20/2022]
Abstract
The Objective of this prospective observational study was to evaluate the applicability of the simplified acute physiology score (SAPS II) in patients admitted to an Emergency Medicine Ward in the Emergency Medicine Ward of a tertiary university hospital. We studied consecutive patients admitted to an Emergency Medicine Ward from the emergency department. The SAPS II was assessed in predicting overall in-hospital mortality in terms of sensitivity, specificity and receiver operating characteristic (ROC) curve. A total of 211 consecutive patients were admitted over a period of 2 months. Median SAPS II score was 28 (range 6-93), with a mean risk of in-hospital mortality of 0.17 (range 0.01-0.97) for the whole population, and an observed mortality of 15%. The area under the receiver operator curve (ROC) was 0.84 (0.77-0.91). Considering a cut-off value of SAPS II of 49, the sensitivity was 0.50 (95% CI 0.42-0.56), the specificity was 0.95 (0.92-0.98), the positive predictive value (PPV) was 0.64 (0.58-0.71), and the negative predictive value (NPV) was 0.91 (0.87-0.95), the positive likelihood ratio (pLH) was 9.9, and the negative likelihood ratio (nLH) was 0.5. If contrarily a cut-off value of SAPS II of 22 were used, the sensitivity would be 1.0, the specificity would be 0.21 (0.16-0.26), the PPV would be 0.18 (0.13-0.23), the NPV would be 1.0, the pLH would be 1.3, and the nLH would be 0.0. In this preliminary study, SAPS II predicted in-hospital mortality in patients admitted to an Emergency Ward.
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Affiliation(s)
- Roberto Cosentini
- Fondazione IRCCS Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena, U.O. Medicina d'Urgenza, Gruppo NIV Policlinico, Via F. Sforza, 35, 20122 Milan, Italy
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Point-of-use water filtration reduces endemic Pseudomonas aeruginosa infections on a surgical intensive care unit. Am J Infect Control 2008; 36:421-9. [PMID: 18675148 DOI: 10.1016/j.ajic.2007.09.012] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Revised: 09/17/2007] [Accepted: 09/17/2007] [Indexed: 11/21/2022]
Abstract
BACKGROUND Endemic infections because of Pseudomonas aeruginosa were observed on a surgical intensive care unit (ICU) for a period of >24 months. Tap water probing revealed persistent colonization of all ICU water taps with a single P aeruginosa clonotype. METHODS Water outlets of the ICU were equipped with disposable point-of-use water filters, changed in weekly and, later, 2-week intervals. To delineate the effect of the filters, 4 study approaches were followed: (1) a descriptive analysis of the incidence of P aeruginosa colonizations and infections, (2) microbiologic examinations of tap water before and after installation of the filters, (3) a comparative cohort analysis of representative patient samples from the prefilter and postfilter time periods, and (4) an analysis of general ward variables for the 2 periods. RESULTS (1) The mean monthly rate (+/-SD) of P aeruginosa infection/colonization episodes was 3.9 +/- 2.4 in the prefilter and 0.8 +/- 0.8 in the postfilter period. P aeruginosa colonizations were reduced by 85% (P < .0001) and invasive infections by 56% (P < .0003) in the postfilter period. (2) Microbiologic examinations of tap water revealed growth of P aeruginosa in 113 of 117 (97%) samples collected during the prefilter period, compared with 0 of 52 samples taken from filter-equipped taps. (3) In the comparative cohort analysis, a number of patient-related variables were significantly associated with P aeruginosa colonization/infection. Considering these variables in a multivariate analysis, belonging to the postfilter cohort was the factor most strongly associated with a reduced risk of P aeruginosa positivity (relative risk, 0.04; P = .0002). (4) General ward variables such as bed occupancy, personnel-to-patient ratio, or microbiologic culturing density did not differ significantly between the 2 periods. CONCLUSION Taking into account various patient-related and general ward variables, point-of-use water filtration was associated with a significant reduction of chronically endemic P aeruginosa colonizations/infections on a surgical ICU.
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Varricatt VP, Rau NR, Attur RP, Baig WW. Validation of Liano score in acute renal failure: a prospective study in Indian patients. Clin Exp Nephrol 2008; 13:33-7. [PMID: 18661194 DOI: 10.1007/s10157-008-0073-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Accepted: 06/23/2008] [Indexed: 11/27/2022]
Abstract
AIM To validate Liano score as a prognostic scoring system in acute renal failure (ARF): a prospective study in Indian patients. PATIENTS AND METHODS Prospective study including 100 patients over a period of 1 year, from March 2006 to July 2007. Inclusion criteria were patients with no previous renal disease or any systemic disease known to affect the kidney and who presented with acute rise (hours to days) in serum creatinine. Exclusion criteria were patients with preexisting chronic renal failure, age younger than 12 years and ultrasound of the abdomen showing contracted kidneys. RESULTS AND CONCLUSIONS In this study there were 68 males and 32 females. Peak incidence by age was in the fifth decade. There was no increased mortality in any age group (p = 0.278). A total of 19 patients had pre-renal ARF, 74 patients had intrinsic ARF, of which 46 were acute tubular necrosis (ATN); 7 patients had obstructive ARF. A total of 21 patients had Liano score greater than 0.9, of which 18 patients died and 3 were discharged against medical advice in a critical condition (and died later at home). Calculated sensitivity was 62.1%, specificity was 100% and positive predictive value was 100%. Sensitivity and specificity when calculated separately for intrinsic renal ARF (after excluding post renal ARF) were 60.7% and 100%, respectively. There was statistically significant correlation between Liano score and mortality (p < 0.001).
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Affiliation(s)
- Veena P Varricatt
- Department of Medicine, Kasturba Medical College, Manipal, 576104, Karnataka, India
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Heras A, Abizanda R, Belenguer A, Vidal B, Ferrándiz A, Micó ML, Alvaro R. [Intermediate care units. Health care consequences in a reference hospital]. Med Intensiva 2008; 31:353-60. [PMID: 17942058 DOI: 10.1016/s0210-5691(07)74839-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Intermediate Care Units are forms to provide health care services to potentially critical patients that allow for improved cost-benefit ratio of the care offered by Intensive Medicine Departments. OBJECTIVE Analyze heart care repercussion that the permanent opening of this type of unit had in a reference teaching center. DESIGN Prospective. PERIOD From the beginning of 2003 to the end of 2005. SCOPE Intensive Medicine Department (IMD), with teaching accreditation, which has 15 conventional ICU beds and 4 intermediate care beds. PATIENTS AND METHODS Analysis of demographic data (gender and age, type of patient, and origin or admission), of severity (SAPS 2), prognosis (MPM II 0 and SAPS2) and health care burden (NEMS) in 3,392 consecutive admissions to IMD. Specific analysis of the stay and mortality (intra- and post ICU). RESULTS Permanent opening of an intermediate care unit is associated with an increase of patients seen by the IMD and makes it possible to clearly identify two different types of patients according to the site linked to the cause of the admission. The patients seen in the Intermediate Care Unit have a shorter stay, less seriousness, greater survival prognosis and less care burden. However, the initiation of this service does not decrease the interval of total mortality (intra+post- ICU). CONCLUSION Initiating an intermediate care unit depending on an IMD increases its health care capacity and that of the center it gives service to without affecting global mortality.
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Affiliation(s)
- A Heras
- Servei de Medicina Intensiva, Hospital Universitario Asociado General de Castelló, Spain
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Kofoed K, Eugen-Olsen J, Petersen J, Larsen K, Andersen O. Predicting mortality in patients with systemic inflammatory response syndrome: an evaluation of two prognostic models, two soluble receptors, and a macrophage migration inhibitory factor. Eur J Clin Microbiol Infect Dis 2008; 27:375-83. [PMID: 18197443 DOI: 10.1007/s10096-007-0447-5] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2007] [Accepted: 12/10/2007] [Indexed: 01/20/2023]
Abstract
Better outcomes in patients suspected of community-acquired infections requires the optimal and timely assessment of disease severity at the point of first contact with the health care system, which is typically in the emergency department. This study was conducted using a previously described, prospectively collected cohort of patients with systemic inflammatory response syndrome (SIRS) that were admitted to an emergency department and a department of infectious diseases at a university hospital. Plasma samples were collected and disease severity scores calculated upon admission. A multiplex immunoassay and a newly developed enzyme-linked immunosorbent assay (ELISA)-based assay were used to measure the soluble urokinase-type plasminogen activator receptor, soluble triggering receptor expressed on myeloid cells-1, and macrophage migration inhibitory factor. The area under the receiver operating characteristic (ROC) curve for the prediction of 30- and 180-day mortality was used to compare the performance of the markers and the models. A total of 151 patients were eligible for analysis. Of these, nine died before day 30 and 19 died before day 180 post-admission. Admission-soluble urokinase-type plasminogen activator receptor levels were significantly higher in both day 30 and day 180 non-survivors. There was a non-significant trend towards higher macrophage migration inhibitory factor concentrations in day 30 non-survivors. Soluble triggering receptor expressed on myeloid cells-1 levels were significantly lower in non-survivors at both time points. The simplified acute physiology score II (SAPS II) and sequential organ failure assessment (SOFA) scores were significantly higher in non-survivors at both time points, indicating that these models intended for use in intensive care units might also be useful in an emergency department setting.
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Affiliation(s)
- K Kofoed
- Clinical Research Centre and Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, Kettegaard Allé 30, 2650 Hvidovre, Denmark.
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Corfield AR, Thomas L, Inglis A, Hearns S. A rural emergency medical retrieval service: the first year. Emerg Med J 2007; 23:679-83. [PMID: 16921078 PMCID: PMC2564207 DOI: 10.1136/emj.2006.034355] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION We describe the first year of operation of a rural emergency medical retrieval service (EMRS), staffed by emergency medicine and anaesthetic consultants and providing air based retrieval of critically ill and injured patients from general practitioner led community hospitals in rural west Scotland. METHODS Data were collected on all patients referred to the service, both those subsequently transported and those where transport by the service was not indicated, for a period of 1 year from 1 October 2004 to 30 September 2005. Data collected included information on demographics, physiology, and medical interventions. Detailed data were collected regarding advanced airway care and any complications relating to transfer. RESULTS Forty patients were attended and advice was given on a further 21 patients. Twenty one of the 40 patients (53%) required rapid sequence intubation prior to transfer. The median Injury Severity Score (ISS) for trauma patients was 26 (range 2-59). The median Acute Physiology and Chronic Health Evaluation (APACHE) II score for all patients was 11 (range 2-37). CONCLUSION Our data show a high level of acuity among this patient group and a need for advanced medical intervention to ensure safe transfer.
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Affiliation(s)
- A R Corfield
- Emergency Medicine, Royal Alexandra Hospital, Paisley, PA2 9PN, UK.
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Castillo F, López JM, Marco R, González JA, Puppo AM, Murillo F. [Care grading in Intensive Medicine: Intermediate Care Units]. Med Intensiva 2007; 31:36-45. [PMID: 17306139 DOI: 10.1016/s0210-5691(07)74768-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Intermediate Care Units are created for patients who predictably have low risk of requiring therapeutic life support measures but who require more monitoring and nursing cares than those received in the conventional hospitalization wards. Previous studies have demonstrated that Intermediate Care Units may promote hospital care grading, allowing for better classification in critical patients, improving efficacy and efficiency of the ICUs and thus decreasing costs and above all mortality in the conventional hospitalization wards. This document attempts to group the currently existing knowledge that served as a base for the consensus meeting on the application of them in the establishment of future ICUs in our hospital setting.
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Affiliation(s)
- F Castillo
- Servicio de Cuidados Críticos y Urgencias, Hospitales Universitarios Virgen del Rocío, Sevilla, España.
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Peek N, Arts DGT, Bosman RJ, van der Voort PHJ, de Keizer NF. External validation of prognostic models for critically ill patients required substantial sample sizes. J Clin Epidemiol 2007; 60:491-501. [PMID: 17419960 DOI: 10.1016/j.jclinepi.2006.08.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2005] [Accepted: 08/23/2006] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To investigate the behavior of predictive performance measures that are commonly used in external validation of prognostic models for outcome at intensive care units (ICUs). STUDY DESIGN AND SETTING Four prognostic models (Simplified Acute Physiology Score II, the Acute Physiology and Chronic Health Evaluation II, and the Mortality Probability Models II) were evaluated in the Dutch National Intensive Care Evaluation registry database. For each model discrimination (AUC), accuracy (Brier score), and two calibration measures were assessed on data from 41,239 ICU admissions. This validation procedure was repeated with smaller subsamples randomly drawn from the database, and the results were compared with those obtained on the entire data set. RESULTS Differences in performance between the models were small. The AUC and Brier score showed large variation with small samples. Standard errors of AUC values were accurate but the power to detect differences in performance was low. Calibration tests were extremely sensitive to sample size. Direct comparison of performance, without statistical analysis, was unreliable with either measure. CONCLUSION Substantial sample sizes are required for performance assessment and model comparison in external validation. Calibration statistics and significance tests should not be used in these settings. Instead, a simple customization method to repair lack-of-fit problems is recommended.
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Affiliation(s)
- N Peek
- Department of Medical Informatics, Academic Medical Center--Universiteit van Amsterdam, Amsterdam, the Netherlands.
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Serantes R, Arnalich F, Figueroa M, Salinas M, Andrés-Mateos E, Codoceo R, Renart J, Matute C, Cavada C, Cuadrado A, Montiel C. Interleukin-1beta enhances GABAA receptor cell-surface expression by a phosphatidylinositol 3-kinase/Akt pathway: relevance to sepsis-associated encephalopathy. J Biol Chem 2006; 281:14632-43. [PMID: 16567807 DOI: 10.1074/jbc.m512489200] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Sepsis-associated encephalopathy (SAE) is a frequent but poorly understood neurological complication in sepsis that negatively influences survival. Here we present clinical and experimental evidence that this brain dysfunction may be related to altered neurotransmission produced by inflammatory mediators. Compared with septic patients, SAE patients had higher interleukin-1beta (IL-1beta) plasma levels; interestingly, these levels decreased once the encephalopathy was resolved. A putative IL-1beta effect on type A gamma-aminobutyric acid receptors (GABA(A)Rs), which mediate fast synaptic transmission in most cerebral inhibitory synapses in mammals, was investigated in cultured hippocampal neurons and in Xenopus oocytes expressing native or foreign rat brain GABA(A)Rs, respectively. Confocal images in both cell types revealed that IL-1beta increases recruitment of GABA(A)Rs to the cell surface. Moreover, brief applications of IL-1beta to voltage-clamped oocytes yielded a delayed potentiation of the GABA-elicited chloride currents (I(GABA)); this effect was suppressed by IL-1ra, the natural IL-1 receptor (IL-1RI) antagonist. Western blot analysis combined with I(GABA) recording and confocal images of GABA(A) Rs in oocytes showed that IL-1beta stimulates the IL-1RI-dependent phosphatidylinositol 3-kinase activation and the consequent facilitation of phospho-Akt-mediated insertion of GABA(A)Rs into the cell surface. The interruption of this signaling pathway by specific phosphatidylinositol 3-kinase or Akt inhibitors suppresses the cytokine-mediated effects on GABA(A)R, whereas activation of the conditionally active form of Akt1 (myr-Akt1.ER*) with 4-hydroxytamoxifen reproduces the effects. These findings point to a previously unrecognized signaling pathway that connects IL-1beta with increased "GABAergic tone." We propose that through this mechanism IL-1beta might alter synaptic strength at central GABAergic synapses and so contribute to the cognitive dysfunction observed in SAE.
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Affiliation(s)
- Rocío Serantes
- Departamento de Medicina, Hospital Universitario La Paz, Paseo de la Castellana 261, 28046 Madrid, Spain
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Gordon AC, Oakervee HE, Kaya B, Thomas JM, Barnett MJ, Rohatiner AZS, Lister TA, Cavenagh JD, Hinds CJ. Incidence and outcome of critical illness amongst hospitalised patients with haematological malignancy: a prospective observational study of ward and intensive care unit based care. Anaesthesia 2005; 60:340-7. [PMID: 15766336 DOI: 10.1111/j.1365-2044.2005.04139.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To determine the incidence and outcome of critical illness amongst the total population of hospital patients with haematological malignancy (including patients treated on the ward as well as those admitted to the intensive care unit), consecutive patients with haematological malignancy were prospectively studied. One hundred and one of the 1437 haemato-oncology admissions (7%) in 2001 were complicated by critical illness (26% of all new referrals). Fifty-four (53%) of these critically ill patients survived to leave hospital and 33 (34%) were still alive after 6 months. The majority (77/101) were not admitted to the intensive care unit but were managed on the ward, often with the assistance of the intensive care team. Independent risk factors for dying in hospital included hepatic failure (odds ratio 5.3, 95% confidence intervals 1.3-21.2) and central nervous system failure (odds ratio 14.5, 95% confidence intervals 1.7-120.5). No patient with four or more organ failures or a Simplified Acute Physiology Score II >/= 65 survived to leave hospital. There was close agreement between actual and predicted mortality with increasing Simplified Acute Physiology Score II for all patients, including those not admitted to intensive care.
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Affiliation(s)
- A C Gordon
- Department of Anaesthesia and Intensive Care, Barts and The London Queen Mary's School of Medicine and Dentistry, St. Bartholomew's Hospital, West Smithfield, London, EC1A 7BE, UK
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da Silva MCM, de Sousa RMC. A versão simplificada do Therapeutic Intervention Scoring System e seu valor prognóstico. Rev Esc Enferm USP 2004; 38:217-24. [PMID: 15973981 DOI: 10.1590/s0080-62342004000200013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
O estudo avalia a capacidade do Therapeutic Intervention Scoring System (TISS-28) de discriminar pacientes internados em UTI, prováveis de morrer daqueles possíveis de sobreviver e estabelecer a pontuação limiar para alta probabilidade de morte. Os resultados, obtidos da amostra de 200 pacientes internados em 14 UTIs do Município de São Paulo, mostraram que o TISS-28 apresentou associação com mortalidade (p=0,0001). O ponto de corte estabelecido foi 21. Encontrou-se que 80,88% dos que morreram tinham pontuação do TISS-28 maior ou igual, e 68,18% dos sobreviventes tinham pontuação menor que 21. Além disso, quanto ao valor prognóstico do TISS-28, constatou-se acurácia de 0,72.
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Affiliation(s)
- Maria Cláudia Moreira da Silva
- Enfermeira. Especialista em Cuidados Intensivos e Mestre em Enfermagem-Saúde do Adulto pela Escola de Enfermagem da USP.
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Priestley G, Watson W, Rashidian A, Mozley C, Russell D, Wilson J, Cope J, Hart D, Kay D, Cowley K, Pateraki J. Introducing Critical Care Outreach: a ward-randomised trial of phased introduction in a general hospital. Intensive Care Med 2004; 30:1398-404. [PMID: 15112033 DOI: 10.1007/s00134-004-2268-7] [Citation(s) in RCA: 227] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2003] [Accepted: 02/27/2004] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The purpose of the study was to investigate the effects of introducing a critical care outreach service on in-hospital mortality and length of stay in a general acute hospital. DESIGN A pragmatic ward-randomised trial design was used, with intervention introduced to all wards in sequence. No blinding was possible. SETTING Sixteen adult wards in an 800-bed general hospital in the north of England. PATIENTS AND PARTICIPANTS All admissions to the 16 surgical, medical and elderly care wards during 32-week study period were included (7450 patients in total, of whom 2903 were eligible for the primary comparison). INTERVENTIONS Essential elements of the Critical Care Outreach service introduced during the study were a nurse-led team of nurses and doctors experienced in critical care, a 24-h service, emphasis on education, support and practical help for ward staff. MEASUREMENTS AND RESULTS The main outcome measures were in-hospital mortality and length of stay. Outreach intervention reduced in-hospital mortality compared with control (two-level odds ratio: 0.52 (95% CI 0.32-0.85). A possible increased length of stay associated with outreach was not fully supported by confirmatory and sensitivity analyses. CONCLUSIONS The study suggests outreach reduces mortality in general hospital wards. It may also increase length of stay, but our findings on this are equivocal.
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Lekkou A, Karakantza M, Mouzaki A, Kalfarentzos F, Gogos CA. Cytokine production and monocyte HLA-DR expression as predictors of outcome for patients with community-acquired severe infections. CLINICAL AND DIAGNOSTIC LABORATORY IMMUNOLOGY 2004; 11:161-7. [PMID: 14715564 PMCID: PMC321326 DOI: 10.1128/cdli.11.1.161-167.2004] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This study was performed to evaluate the impact of pro- and anti-inflammatory molecules and human leukocyte antigen DR (HLA-DR) expression as markers of immune status for the final outcome of septic patients. The study included 30 patients with severe sepsis due to community-acquired infections. Concentrations of tumor necrosis factor alpha (TNF-alpha), interleukin-6 (IL-6), IL-8, IL-10, and transforming growth factor beta1 (TGF-beta1) in serum, as well as monocyte HLA-DR expression, were determined on admission and on days 3, 10, 13, and 17 during hospitalization. Of the 30 patients enrolled, 13 survived, while 17 died during their hospital stay. All patients had significantly lower HLA-DR expression and higher pro- and anti-inflammatory cytokine levels than healthy individuals. HLA-DR expression was significantly decreased in nonsurvivors at almost all time points. In nonsurvivors, higher levels in serum of TNF-alpha on days 13 and 17; IL-6 levels on day 3; and IL-10 on days 3, 10, and 13 were found. Baseline levels of TGF-beta1 were significantly higher in survivors. Independent risk factors of mortality were IL-10 levels on days 3 and 10, while monocyte HLA-DR expression on admission was a good predictor for survival. Several pro- and anti-inflammatory cytokines are oversynthesized during severe infections, especially in patients with a poor outcome. Monocyte HLA-DR expression is an early and constant predictive marker for survival in severe sepsis, while serum IL-10 levels on days 3 and 10 have negative prognostic value for the final outcome.
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Affiliation(s)
- A Lekkou
- Department of Internal Medicine, Patras University Hospital, School of Medicine, 26500 Patras, Greece
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Gogos CA, Lekkou A, Papageorgiou O, Siagris D, Skoutelis A, Bassaris HP. Clinical prognostic markers in patients with severe sepsis: a prospective analysis of 139 consecutive cases. J Infect 2003; 47:300-6. [PMID: 14556754 DOI: 10.1016/s0163-4453(03)00101-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To analyze the clinical characteristics and determine predictive factors of mortality in previously healthy individuals suffering from severe sepsis. METHODS The study included 139 patients with severe sepsis, admitted to the Department of Medicine over a two years period. Data recorded on admission included demographic information, blood pressure, core temperature, white blood count, hepatic and renal function tests, coagulation factors, blood gases, serum lactic acid levels, simplified acute physiology score (SAPS-II) and Glasgow Coma Scale (GCS). RESULTS On admission, 62 patients were hypotensive, 52 had signs of diffuse intravascular coagulation (DIC), 72 had renal and 27 hepatic dysfunction. The overall mortality rate was 27.3%. Twenty-nine patients had septic shock on admission with a mortality rate of 62.07%. Hypoxemia, metabolic acidosis and the presence of DIC were more frequent in non-survivors, who also had significantly higher SAPS-II on admission and days 3 and 7. Independent factors associated with mortality were older age, septic shock, DIC and acute renal failure on admission, as well as SAPS-II at all time points and lactic acid levels on day 7. CONCLUSIONS Septic patients with advanced age, septic shock, renal failure, DIC and metabolic acidosis on admission are at increased risk of mortality. The sustained presence of high SAPS-II and lactacidemia one week after admission are also important risk factors of poor outcome.
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Affiliation(s)
- Charalambos A Gogos
- Section of Infectious Diseases, School of Medicine, Patras University, Greece.
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Ceriana P, Carlucci A, Navalesi P, Rampulla C, Delmastro M, Piaggi G, De Mattia E, Nava S. Weaning from tracheotomy in long-term mechanically ventilated patients: feasibility of a decisional flowchart and clinical outcome. Intensive Care Med 2003; 29:845-8. [PMID: 12634987 DOI: 10.1007/s00134-003-1689-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2002] [Accepted: 01/21/2003] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess the feasibility of following a decisional flowchart to decide whether to remove tracheotomy in long-term mechanically ventilated patients. DESIGN AND SETTING Prospective study in a respiratory intensive care unit, with beds dedicated to weaning from prolonged mechanical ventilation. PATIENTS AND PARTICIPANTS 108 tracheotomized patients with respiratory failure of different causes (chronic obstructive pulmonary disease, postsurgical complications, recovery from hypoxemic respiratory failure, neuromuscular disorders), 36 of whom died or could not be weaned from mechanical ventilation. INTERVENTIONS We applied a decisional flowchart based on some simple clinical and physiological parameters aimed at assessing the patient's ability to remove secretions, swallowing function, absence of psychiatric diseases, possibility of reaching spontaneous breathing, and amount of respiratory space. MEASUREMENTS AND RESULTS Following our flowchart 56 of the remaining patients were successfully weaned from the tracheotomy cannula, with a reintubation rate at 3 months of 3%. The main reasons for not proceeding to decannulation were inability to remove secretions and severe glottic stenosis. No statistical differences were found between patients who received a surgical or percutaneous tracheotomy. CONCLUSIONS Using a simple decisional flowchart we were able to remove tracheotomy cannula in almost 80% of the patients with spontaneous breathing autonomy without major clinical complications. Further larger prospective studies are needed to confirm this clinical approach in larger and different populations.
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Affiliation(s)
- Piero Ceriana
- Respiratory Intensive Care Unit, Istituto Scientifico di Pavia, Fondazione S. Maugeri, IRCCS, Via Ferrata 8, 27100 Pavia, Italy
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Frutos F, Alía I, Vallverdú I, Revuelta P, Saura P, Besso G, Gener J, Gómez rubí J, González prado S, De pablo R, Benito S, Esteban A. Pronóstico de una cohorte de enfermos en ventilación mecánica en 72 unidades de cuidados intensivos en España. Med Intensiva 2003. [DOI: 10.1016/s0210-5691(03)79886-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Junker C, Zimmerman JE, Alzola C, Draper EA, Wagner DP. A multicenter description of intermediate-care patients: comparison with ICU low-risk monitor patients. Chest 2002; 121:1253-61. [PMID: 11948061 DOI: 10.1378/chest.121.4.1253] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
STUDY OBJECTIVES To describe the characteristics and outcomes of patients admitted to intermediate-care areas (ICAs) and to compare them with those of ICU patients who receive monitoring only on day 1 and are at a low risk (i.e., < 10%) for receiving subsequent active life-supporting therapy (i.e., low-risk monitor patients). DESIGN Nonrandomized, retrospective, cohort study. SETTING Thirteen US teaching hospitals and 19 nonteaching hospitals. PATIENTS A consecutive sample of 8,971 patients at 37 ICAs and 5,116 low-risk (i.e., < 10%) monitor patients at 59 ICUs in 32 US hospitals. INTERVENTIONS None. MEASUREMENTS AND RESULTS We recorded demographic and clinical characteristics, resource use, and outcomes for the ICA and ICU low-risk monitor patients. Patient data and outcomes for this study were collected concurrently or retrospectively. ICA and ICU low-risk monitor patients were similar in regard to gender, race, and frequency of comorbitities, but ICA patients were significantly (p < 0.001) older, had fewer physiologic abnormalities (mean acute physiology score, 16.7 vs 19.8, respectively), and were more frequently admitted due to nonoperative diagnoses. The mean length of stay for ICA patients was significantly longer (3.9 days) than for ICU low-risk monitor patients (2.6 days; p < 0.001). The hospital mortality rate was significantly higher for ICA patients (3.1%) compared to ICU low-risk monitor patients (2.3%; p = 0.002). CONCLUSIONS The clinical features of ICA patients are similar, but not identical to, those of less severely ill ICU monitor patients. Comparisons of hospital death rates and lengths of stay for these patients should be adjusted for characteristics that previously have been shown to influence these outcomes.
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Affiliation(s)
- Christopher Junker
- Department of Anesthesiology and Critical Care Medicine, George Washington University Medical Center, Washington, DC 20037, USA.
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Severity of Illness Scoring Systems. Intensive Care Med 2002. [DOI: 10.1007/978-1-4757-5551-0_81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Aronin SI, Quagliarello VJ. Utility of prognostic stratification in adults with community-acquired bacterial meningitis. COMPREHENSIVE THERAPY 2001; 27:72-7. [PMID: 11280860 DOI: 10.1007/s12019-001-0011-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Prognostic stratification uses baseline clinical features to subdivide patients into subgroups with different risks for a particular outcome. We review the importance of prognostic stratification in internal medicine, in infectious diseases, and in adults with community-acquired bacterial meningitis.
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Affiliation(s)
- S I Aronin
- Waterbury Hospital Health Center, 64 Robbins Street, Waterbury, CT 06721, USA
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Confalonieri M, Gorini M, Ambrosino N, Mollica C, Corrado A. Respiratory intensive care units in Italy: a national census and prospective cohort study. Thorax 2001; 56:373-8. [PMID: 11312406 PMCID: PMC1746048 DOI: 10.1136/thorax.56.5.373] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND In Italy, respiratory intensive care units (RICUs) provide an intermediate level of care between the intensive care unit (ICU) and the general ward for patients with single organ respiratory failure. Because of the lack of official epidemiological data in these units, a two phase study was performed with the aim of describing the work profile in Italian RICUs. METHODS A national survey of RICUs was conducted from January to March 1997 using a questionnaire which comprised over 30 items regarding location, models of service provision, staff, and equipment. The following criteria were necessary for inclusion of a unit in the survey: (1) a nurse to patient ratio ranging from 1:2.5 to 1:4 per shift; (2) availability of adequate continuous non-invasive monitoring; (3) expertise for non-invasive ventilation (NIV) and for intubation in case of NIV failure; (4) physician availability 24 hours a day. Between November 1997 and January 1998 a 3 month prospective cohort study was performed to survey the patient population admitted to the RICUs. RESULTS Twenty six RICUs were included in the study: four were located in rehabilitation centres and 22 in general hospitals. In most, the reported nurse to patient ratio ranged from 1:2 to 1:3, with 36% of units reporting a ratio of 1:4 per shift. During the study period 756 consecutive patients of mean (SD) age 68 (12) years were admitted to the 26 RICUs. The highest proportion (47%) were admitted from emergency departments, 19% from other medical wards, 18% were transferred from the ICU, 13% from specialist respiratory wards, and 2% were transferred following surgery. All but 32 had respiratory failure on admission. The reasons for admission to the RICU were: monitoring for expected clinical instability (n=221), mechanical ventilation (n=473), and weaning (n=59); 586 patients needed mechanical ventilation during their stay in the RICU, 425 were treated with non-invasive techniques as a first line of treatment (374 by non-invasive positive pressure, 51 by iron lung), and 161 underwent invasive mechanical ventilation (63 intubated, 98 tracheostomies). All but 48 patients had chronic respiratory disease, mainly chronic obstructive pulmonary disease (COPD; n=451). More than 70% of patients (n=228) had comorbidity, mainly consisting of heart disorders. The median APACHE II score was 18 (range 1--43). The predicted inpatient mortality risk rate according to the APACHE II equation was 22.1% while the actual inpatient mortality rate was 16%. The mean length of stay in the RICU was 12 (11) days. The outcome in most patients (79.2%) admitted to RICUs was favourable. CONCLUSIONS Italian RICUs are specialised units mainly devoted to the monitoring and treatment of acute on chronic respiratory failure by non-invasive ventilation, but also to weaning from invasive mechanical ventilation. The results of this study provide a useful insight into an increasingly important field of respiratory medicine.
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Affiliation(s)
- M Confalonieri
- Unità Operativa di Pneumologia, Ospedali Riuniti di Trieste, Trieste, Italy.
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Fiaccadori E, Maggiore U, Lombardi M, Leonardi S, Rotelli C, Borghetti A. Predicting patient outcome from acute renal failure comparing three general severity of illness scoring systems. Kidney Int 2000; 58:283-92. [PMID: 10886573 DOI: 10.1046/j.1523-1755.2000.00164.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND A major problem of studies on acute renal failure (ARF) arises from a lack of prognostic tools able to express the medical complexity of the syndrome adequately and to predict patient outcome accurately. Our study was thus aimed at evaluating the predictive ability of three general prognostic models [version II of the Acute Physiology and Chronic Health Evaluation (APACHE II), version II of the Simplified Acute Physiology Score (SAPS II), and version II of the Mortality Probability Model at 24 hours (MPM24 II)] in a prospective, single-center cohort of patients with ARF in an intermediate nephrology care unit. METHODS Four hundred twenty-five patients consecutively admitted for ARF to the Nephrology and Internal Medicine Department over a five-year period were studied (272 males and 153 females, median age 71 years, interquartile range 61 to 78, median APACHE II score 23, interquartile range 18 to 28). Acute tubular necrosis (ATN) accounted for 68.7% (292 out of 425) of patients. Renal replacement therapies (hemodialysis or continuous hemofiltration) were used in 64% (272 out of 425) of ARF patients. RESULTS Observed mortality was 39.1% (166 out of 425). The mean predicted mortality was 36.2% with APACHE II (P = 0.571 vs. observed mortality), 39.3% with SAPS II (P = 0.232), and 45.1% with MPM24 II (P < 0.0001). Lemeshow-Hosmer goodness-of-fit C and H statistics were 15.67 (P = 0.047) and 12.05 (P = 0.15) with APACHE II, 32.53 (P = 0.0001), 39.8 (P = 0.0001) with SAPS II, 21.86 (P = 0.005), and 20. 24 (P = 0.009) with MPM24 II, respectively. Areas under the receiver operating characteristic (ROC) curve were 0.75, 0.77, and 0.85, respectively. CONCLUSIONS The APACHE II model was a slightly better calibrated predictor of group outcome in ARF patients, as compared with the SAPS II and MPM24 II outcome prediction models. The MPM24 II model showed the best discrimination capacity, in comparison with both APACHE II and SAPS II models, but it constantly and significantly overestimated mean predicted mortality in ARF patients. None of the models provided sufficient confidence for the prediction of outcome in individual patients. A high degree of caution must be exerted in the application of existing general prognostic models for outcome prediction in ARF patients.
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Affiliation(s)
- E Fiaccadori
- Reparto Acuti, Dipartimento di Clinica Medica, Nefrologia, and Scienze della Prevenzione, Universitá degli Studi di Parma, Italy.
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Statistical basis and clinical applications of severity of illness scoring systems in the intensive care unit. Curr Opin Crit Care 1999. [DOI: 10.1097/00075198-199906000-00005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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