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Carr JR, Knox DB, Butler AM, Lum MM, Jacobs JR, Jephson AR, Jones BE, Brown SM, Dean NC. ICU Utilization After Implementation of Minor Severe Pneumonia Criteria in Real-Time Electronic Clinical Decision Support. Crit Care Med 2024; 52:e132-e141. [PMID: 38157205 PMCID: PMC10922756 DOI: 10.1097/ccm.0000000000006163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
OBJECTIVES To determine if the implementation of automated clinical decision support (CDS) with embedded minor severe community-acquired pneumonia (sCAP) criteria was associated with improved ICU utilization among emergency department (ED) patients with pneumonia who did not require vasopressors or positive pressure ventilation at admission. DESIGN Planned secondary analysis of a stepped-wedge, cluster-controlled CDS implementation trial. SETTING Sixteen hospitals in six geographic clusters from Intermountain Health; a large, integrated, nonprofit health system in Utah and Idaho. PATIENTS Adults admitted to the hospital from the ED with pneumonia identified by: 1) discharge International Classification of Diseases , 10th Revision codes for pneumonia or sepsis/respiratory failure and 2) ED chest imaging consistent with pneumonia, who did not require vasopressors or positive pressure ventilation at admission. INTERVENTIONS After implementation, patients were exposed to automated, open-loop, comprehensive CDS that aided disposition decision (ward vs. ICU), based on objective severity scores (sCAP). MEASUREMENTS AND MAIN RESULTS The analysis included 2747 patients, 1814 before and 933 after implementation. The median age was 71, median Elixhauser index was 17, 48% were female, and 95% were Caucasian. A mixed-effects regression model with cluster as the random effect estimated that implementation of CDS utilizing sCAP increased 30-day ICU-free days by 1.04 days (95% CI, 0.48-1.59; p < 0.001). Among secondary outcomes, the odds of being admitted to the ward, transferring to the ICU within 72 hours, and receiving a critical therapy decreased by 57% (odds ratio [OR], 0.43; 95% CI, 0.26-0.68; p < 0.001) post-implementation; mortality within 72 hours of admission was unchanged (OR, 1.08; 95% CI, 0.56-2.01; p = 0.82) while 30-day all-cause mortality was lower post-implementation (OR, 0.71; 95% CI, 0.52-0.96; p = 0.03). CONCLUSIONS Implementation of electronic CDS using minor sCAP criteria to guide disposition of patients with pneumonia from the ED was associated with safe reduction in ICU utilization.
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Affiliation(s)
- Jason R Carr
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT
- Division of Respiratory, Critical Care and Occupational Pulmonary Medicine, University of Utah School of Medicine, Salt Lake City, UT
| | - Daniel B Knox
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT
| | - Allison M Butler
- Intermountain Healthcare Statistical Data Center, Salt Lake City, UT
| | | | - Jason R Jacobs
- Intermountain Healthcare, Enterprise Data Analytics, Salt Lake City, UT
| | - Al R Jephson
- Intermountain Healthcare, Enterprise Data Analytics, Salt Lake City, UT
| | - Barbara E Jones
- Division of Respiratory, Critical Care and Occupational Pulmonary Medicine, University of Utah School of Medicine, Salt Lake City, UT
- Salt Lake City Veterans Affairs Medical Center, Salt Lake City, UT
| | - Samuel M Brown
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT
- Division of Respiratory, Critical Care and Occupational Pulmonary Medicine, University of Utah School of Medicine, Salt Lake City, UT
| | - Nathan C Dean
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT
- Division of Respiratory, Critical Care and Occupational Pulmonary Medicine, University of Utah School of Medicine, Salt Lake City, UT
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Lanspa MJ, Dugar SP, Prigmore HL, Boyd JS, Rupp JD, Lindsell CJ, Rice TW, Qadir N, Lim GW, Shiloh AL, Dieiev V, Gong MN, Fox SW, Hirshberg EL, Khan A, Kornfield J, Schoeneck JH, Macklin N, Files DC, Gibbs KW, Prekker ME, Parsons-Moss D, Bown M, Olsen TD, Knox DB, Cirulis MM, Mehkri O, Duggal A, Tenforde MW, Patel MM, Self WH, Brown SM. Early Serial Echocardiographic and Ultrasonographic Findings in Critically Ill Patients With COVID-19. CHEST Crit Care 2023; 1:100002. [PMID: 38014378 PMCID: PMC10030437 DOI: 10.1016/j.chstcc.2023.100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Background Cardiac function of critically ill patients with COVID-19 generally has been reported from clinically obtained data. Echocardiographic deformation imaging can identify ventricular dysfunction missed by traditional echocardiographic assessment. Research Question What is the prevalence of ventricular dysfunction and what are its implications for the natural history of critical COVID-19? Study Design and Methods This is a multicenter prospective cohort of critically ill patients with COVID-19. We performed serial echocardiography and lower extremity vascular ultrasound on hospitalization days 1, 3, and 8. We defined left ventricular (LV) dysfunction as the absolute value of longitudinal strain of < 17% or left ventricle ejection fraction (LVEF) of < 50%. Primary clinical outcome was inpatient survival. Results We enrolled 110 patients. Thirty-nine (35.5%) died before hospital discharge. LV dysfunction was present at admission in 38 patients (34.5%) and in 21 patients (36.2%) on day 8 (P = .59). Median baseline LVEF was 62% (interquartile range [IQR], 52%-69%), whereas median absolute value of baseline LV strain was 16% (IQR, 14%-19%). Survivors and nonsurvivors did not differ statistically significantly with respect to day 1 LV strain (17.9% vs 14.4%; P = .12) or day 1 LVEF (60.5% vs 65%; P = .06). Nonsurvivors showed worse day 1 right ventricle (RV) strain than survivors (16.3% vs 21.2%; P = .04). Interpretation Among patients with critical COVID-19, LV and RV dysfunction is common, frequently identified only through deformation imaging, and early (day 1) RV dysfunction may be associated with clinical outcome.
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Affiliation(s)
- Michael J Lanspa
- Shock Trauma ICU, Intermountain Medical Center, Salt Lake City, UT
| | | | | | - Jeremy S Boyd
- Vanderbilt Health, Vanderbilt University, Nashville, TN
| | - Jordan D Rupp
- Vanderbilt Health, Vanderbilt University, Nashville, TN
| | | | - Todd W Rice
- Vanderbilt Comprehensive Care Clinic, Nashville, TN
| | - Nida Qadir
- University of California, Los Angeles, Los Angeles, CA
| | - George W Lim
- University of California, Los Angeles, Los Angeles, CA
| | | | | | | | | | | | - Akram Khan
- Oregon Health and Science University, Portland, OR
| | | | | | | | | | | | | | | | - Mikaele Bown
- Shock Trauma ICU, Intermountain Medical Center, Salt Lake City, UT
| | - Troy D Olsen
- Shock Trauma ICU, Intermountain Medical Center, Salt Lake City, UT
| | - Daniel B Knox
- Shock Trauma ICU, Intermountain Medical Center, Salt Lake City, UT
| | - Meghan M Cirulis
- Shock Trauma ICU, Intermountain Medical Center, Salt Lake City, UT
| | | | | | | | | | | | - Samuel M Brown
- Shock Trauma ICU, Intermountain Medical Center, Salt Lake City, UT
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Scarpato BM, Locke BW, Bledsoe J, Knox DB, Conner K, Stoddard GJ, Cirulis MM, Elliott CG, Dodson MW. The association between pulmonary artery enlargement and mortality in an Emergency Department population undergoing computed tomography pulmonary angiography. Pulm Circ 2023; 13:e12225. [PMID: 37063745 PMCID: PMC10090800 DOI: 10.1002/pul2.12225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 03/16/2023] [Accepted: 04/03/2023] [Indexed: 04/18/2023] Open
Abstract
Findings of an enlarged pulmonary artery diameter (PAd) and increased pulmonary artery to ascending aorta ratio (PA:AA) on contrast-enhanced computed tomography pulmonary angiography (CTPA) are associated with increased mortality in particular groups of patients with cardiopulmonary disease. However, the frequency and prognostic significance of these incidental findings has not been studied in unselected patients evaluated in the Emergency Department (ED). This study aims to determine the prevalence and associated prognosis of enlarged pulmonary artery measurements in an ED cohort. We measured PA and AA diameters on 990 CTPA studies performed in the ED. An enlarged PA diameter was defined as >27 mm in females and >29 mm in males, while an increased PA:AA was defined as >0.9. Poisson regression was performed to calculate prevalence ratios for relevant comorbidities, and multivariable Cox regression was performed to calculate hazard ratios (HR) for mortality of patients with enlarged pulmonary artery measurements. An enlarged PAd was observed in 27.9% of 990 patients and was more commonly observed in older patients and in patients with obesity or heart failure. Conversely, PA:AA was increased in 34.2% of subjects, and was more common in younger patients and those with peripheral vascular disease or obesity. After controlling for age, sex, and comorbidities, both enlarged PAd (HR 1.29, 95% CI 1.00-1.68, p = 0.05) and PA:AA (HR 1.70, 95% CI 1.31-2.22 p < 0.01) were independently associated with mortality. In sum, enlarged PAd and increased PA:AA are common in patients undergoing CTPAs in the ED setting and both are independently associated with mortality.
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Affiliation(s)
- Brittany M. Scarpato
- Division of Pulmonary and Critical Care MedicineUniversity of UtahSalt Lake CityUtahUSA
- Department of Pulmonary and Critical Care MedicineIntermountain Medical CenterMurrayUtahUSA
| | - Brian W. Locke
- Division of Pulmonary and Critical Care MedicineUniversity of UtahSalt Lake CityUtahUSA
- Department of Pulmonary and Critical Care MedicineIntermountain Medical CenterMurrayUtahUSA
| | - Joseph Bledsoe
- Division of Emergency MedicineIntermountain Medical CenterMurrayUtahUSA
- Department of Emergency MedicineStanford MedicineStanfordCaliforniaUSA
| | - Daniel B. Knox
- Department of Pulmonary and Critical Care MedicineIntermountain Medical CenterMurrayUtahUSA
| | - Karen Conner
- Division of RadiologyIntermountain Medical CenterMurrayUtahUSA
| | | | - Meghan M. Cirulis
- Division of Pulmonary and Critical Care MedicineUniversity of UtahSalt Lake CityUtahUSA
- Department of Pulmonary and Critical Care MedicineIntermountain Medical CenterMurrayUtahUSA
- Department of Pulmonary and Critical Care MedicinePulmonary Hypertension Care Center, Intermountain Medical CenterUtahMurrayUSA
| | - Charles Gregory Elliott
- Department of Pulmonary and Critical Care MedicineIntermountain Medical CenterMurrayUtahUSA
- Department of Pulmonary and Critical Care MedicinePulmonary Hypertension Care Center, Intermountain Medical CenterUtahMurrayUSA
| | - Mark W. Dodson
- Department of Pulmonary and Critical Care MedicineIntermountain Medical CenterMurrayUtahUSA
- Department of Pulmonary and Critical Care MedicinePulmonary Hypertension Care Center, Intermountain Medical CenterUtahMurrayUSA
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Knox DB, Hirshberg EL, Orme J, Peltan I, Lanspa MJ. Effect of COVID 19 pneumonia on hyperglycemia: Is it different from non COVID pneumonia? Diabetes Metab Syndr 2022; 16:102407. [PMID: 35074624 PMCID: PMC8767985 DOI: 10.1016/j.dsx.2022.102407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 01/14/2022] [Accepted: 01/16/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIMS Glycemic control in critical illness has been linked to outcomes. We sought to investigate if COVID pneumonia was causing disrupted glycemic control compared to historically similar diseases. METHODS At Intermountain Healthcare, a 23-hospital healthcare system in the intermountain west, we performed a multicenter, retrospective cohort observational study. We compared 13,268 hospitalized patients with COVID pneumonia to 6673 patients with non -COVID-pneumonia. RESULTS Patients with COVID-19 were younger had fewer comorbidities, had lower mortality and greater length of hospital stay. Our regression models demonstrated that daily insulin dose, indexed for weight, was associated with COVID-19, age, diabetic status, HgbA1c, admission SOFA, ICU length of stay and receipt of corticosteroids. There was significant interaction between a diagnosis of diabetes and having COVID-19. Time in range for our IV insulin protocol was not correlated with having COVID after adjustment. It was correlated with ICU length of stay, diabetic control (HgbA1C) and prior history of diabetes. Among patients with subcutaneous (SQ) insulin only percent of glucose checks in range was correlated with diabetic status, having Covid-19, HgbA1c, total steroids given and Elixhauser comorbidity score even when controlled for other factors. CONCLUSIONS Hospitalized patients with COVID-19 pneumonia who receive insulin for glycemic control require both more SQ and IV insulin than the non-COVID-19 pneumonia counterparts. Patients with COVID-19 who received SQ insulin only had a lower percent of glucose checks in range.
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Affiliation(s)
- Daniel B Knox
- Division of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, USA; Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, UT, USA.
| | - Eliotte L Hirshberg
- Division of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, USA; Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, UT, USA
| | - James Orme
- Division of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, USA; Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, UT, USA
| | - Ithan Peltan
- Division of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, USA; Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, UT, USA
| | - Michael J Lanspa
- Division of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, USA; Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, UT, USA
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Knox DB, Lanspa MJ, Wilson E, Haaland B, Beesley S, Hirshberg E, Abraham TP, Vallabhajosyula S, Grissom CK, Drakos SG, Brown SM. Initial Derivation of a Predictive Model for Left Ventricular Longitudinal Strain (LS) in Early Sepsis. J Intensive Care Med 2021; 37:1049-1054. [PMID: 34757892 DOI: 10.1177/08850666211053796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Septic shock is a common deadly disease often associated with cardiovascular dysfunction. Left ventricular longitudinal strain (LV LS) has been proposed as a sensitive marker to measure cardiovascular function; however, it is not available universally in standard clinical echocardiograms. We sought to derive a predictive model for LV LS, using machine learning techniques with the hope that we may uncover surrogates for LV LS. We found that left ventricular ejection fraction, tricuspid annular plane systolic excursion, sepsis source, height, mitral valve Tei index, LV systolic dimension, aortic valve ejection time, and peak acceleration rate were all predictive of LV LS in this initial exploratory model. Future modeling work may uncover combinations of these variables which may be powerful surrogates for LV LS and cardiovascular function.
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Affiliation(s)
- Daniel B Knox
- 98078Intermountain Medical Center, Murray, UT, USA.,14434University of Utah, Salt Lake City, UT, USA
| | - Michael J Lanspa
- 98078Intermountain Medical Center, Murray, UT, USA.,14434University of Utah, Salt Lake City, UT, USA
| | - Emily Wilson
- 98078Intermountain Medical Center, Murray, UT, USA
| | | | - Sarah Beesley
- 98078Intermountain Medical Center, Murray, UT, USA.,14434University of Utah, Salt Lake City, UT, USA
| | - Eliotte Hirshberg
- 98078Intermountain Medical Center, Murray, UT, USA.,14434University of Utah, Salt Lake City, UT, USA
| | | | | | - Colin K Grissom
- 98078Intermountain Medical Center, Murray, UT, USA.,14434University of Utah, Salt Lake City, UT, USA
| | | | - Samuel M Brown
- 98078Intermountain Medical Center, Murray, UT, USA.,14434University of Utah, Salt Lake City, UT, USA
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Knox DB, Lanspa MJ, Brown SM, Peltan ID, Donohue MM, Puttgen A. Decreased Observance of Stroke in the Population Associated With COVID-19 Related Distancing Measures. Neurohospitalist 2021; 11:137-140. [PMID: 33791057 DOI: 10.1177/1941874420961207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Stroke is a catastrophic medical disease with roughly 795,000 cases per year in the US. We strove to explore whether stroke admissions to a comprehensive stroke center in an area with moderately-low COVID-19 burden changed and if so, to better define the characteristics of the patients and their presentation. We performed a retrospective analysis of all patients with strokes admitted to Intermountain Medical Center. There was a 43% reduction in patients' presentations across all stroke types compared to average April patient volume over the prior 3 years. Likely this was due to a myriad of complex factors which we may retrospectively be able to more fully understand in the years to come.
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Affiliation(s)
- Daniel B Knox
- Intermountain Medical Center, Murray, UT, USA.,University of Utah, Salt Lake City, UT, USA
| | - Michael J Lanspa
- Intermountain Medical Center, Murray, UT, USA.,University of Utah, Salt Lake City, UT, USA
| | - Samuel M Brown
- Intermountain Medical Center, Murray, UT, USA.,University of Utah, Salt Lake City, UT, USA
| | - Ithan D Peltan
- Intermountain Medical Center, Murray, UT, USA.,University of Utah, Salt Lake City, UT, USA
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Touray S, Sood RN, Lindstrom D, Holdorf J, Ahmad S, Knox DB, Sosa AF. Risk Stratification in Patients with Complicated Parapneumonic Effusions and Empyema Using the RAPID Score. Lung 2018; 196:623-629. [PMID: 30099584 DOI: 10.1007/s00408-018-0146-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/05/2018] [Indexed: 01/13/2023]
Abstract
PURPOSE Complicated parapneumonic effusions and empyema are a leading cause of morbidity in the United States with over 1 million admissions annually and a mortality rate that remains high in spite of recent advances in diagnosis and treatment. The identification of high risk patients is crucial for improved management and the provision of cost-effective care. The RAPID score is a scoring system comprised of the following variables: renal function, age, purulence, infection source, and dietary factors and has been shown to predict outcomes in patients with pleural space infections. METHODS In a single center retrospective study, we evaluated 98 patients with complicated parapneumonic effusions and empyema who had tube thoracostomy (with or without Intrapleural fibrinolytic therapy) and assessed treatment success rates, mortality, length of hospital stay, and direct hospitalization costs stratified by three RAPID score categories: low-risk (0-2), medium risk (3-4), and high-risk (5-7) groups. RESULTS Treatment success rate was 71%, and the 90 day mortality rate was 12%. There was a positive-graded association between the low, medium and high RAPID score categories and mortality, (5.3%, 8.3% and 22.6%, respectively), length of hospital stay (10, 21, 19 days, respectively), and direct hospitalization costs ($19,909, $36,317 and $43,384, respectively). CONCLUSION Our findings suggest that the RAPID score is a robust tool which could be used to identify patients with complicated parapneumonic effusions and empyema who may be at an increased risk of mortality, prolonged hospitalization, and who may incur a higher cost of treatment. Randomized controlled trials identifying the most effective initial treatment modality for medium- and high-risk patients are needed.
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Affiliation(s)
- Sunkaru Touray
- Division of Pulmonary, Allergy & Critical Care, Department of Pulmonary Allergy & Critical Care Medicine, UMass Memorial Medical Centre, University of Massachusetts Medical School, Worcester, MA, 01605, USA.
| | - Rahul N Sood
- Lahey Hospital & Medical Center, Burlington, MA, USA
| | - Daniel Lindstrom
- Division of Pulmonary, Allergy & Critical Care, Department of Pulmonary Allergy & Critical Care Medicine, UMass Memorial Medical Centre, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Jonathan Holdorf
- Division of Pulmonary, Allergy & Critical Care, Department of Pulmonary Allergy & Critical Care Medicine, UMass Memorial Medical Centre, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Sumera Ahmad
- Division of Pulmonary and Critical Care, Mayo Clinic, Rochester, MN, USA
| | - Daniel B Knox
- Division of Pulmonary, Allergy & Critical Care, Department of Pulmonary Allergy & Critical Care Medicine, UMass Memorial Medical Centre, University of Massachusetts Medical School, Worcester, MA, 01605, USA
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Lanspa MJ, Gutsche AR, Wilson EL, Olsen TD, Hirshberg EL, Knox DB, Brown SM, Grissom CK. Application of a simplified definition of diastolic function in severe sepsis and septic shock. Crit Care 2016; 20:243. [PMID: 27487776 PMCID: PMC4973099 DOI: 10.1186/s13054-016-1421-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/20/2016] [Indexed: 12/18/2022]
Abstract
BACKGROUND Left ventricular diastolic dysfunction is common in patients with severe sepsis or septic shock, but the best approach to categorization is unknown. We assessed the association of common measures of diastolic function with clinical outcomes and tested the utility of a simplified definition of diastolic dysfunction against the American Society of Echocardiography (ASE) 2009 definition. METHODS In this prospective observational study, patients with severe sepsis or septic shock underwent transthoracic echocardiography within 24 h of onset of sepsis (median 4.3 h). We measured echocardiographic parameters of diastolic function and used random forest analysis to assess their association with clinical outcomes (28-day mortality and ICU-free days to day 28) and thereby suggest a simplified definition. We then compared patients categorized by the ASE 2009 definition and our simplified definition. RESULTS We studied 167 patients. The ASE 2009 definition categorized only 35 % of patients. Random forest analysis demonstrated that the left atrial volume index and deceleration time, central to the ASE 2009 definition, were not associated with clinical outcomes. Our simplified definition used only e' and E/e', omitting the other measurements. The simplified definition categorized 87 % of patients. Patients categorized by either ASE 2009 or our novel definition had similar clinical outcomes. In both definitions, worsened diastolic function was associated with increased prevalence of ischemic heart disease, diabetes, and hypertension. CONCLUSIONS A novel, simplified definition of diastolic dysfunction categorized more patients with sepsis than ASE 2009 definition. Patients categorized according to the simplified definition did not differ from patients categorized according to the ASE 2009 definition in respect to clinical outcome or comorbidities.
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Affiliation(s)
- Michael J Lanspa
- Critical Care Echocardiography Service, Intermountain Medical Center, 5121 South Cottonwood Street, Murray, UT, 84157, USA. .,Division of Pulmonary and Critical Care Medicine, University of Utah, 30 North 1900 East, 701 Wintrobe Building, Salt Lake City, UT, 84132, USA.
| | - Andrea R Gutsche
- Department of Anesthesiology, University of Utah, 30 North 1900 East, 701 Wintrobe, Salt Lake City, UT, 84132, USA
| | - Emily L Wilson
- Critical Care Echocardiography Service, Intermountain Medical Center, 5121 South Cottonwood Street, Murray, UT, 84157, USA
| | - Troy D Olsen
- Critical Care Echocardiography Service, Intermountain Medical Center, 5121 South Cottonwood Street, Murray, UT, 84157, USA
| | - Eliotte L Hirshberg
- Critical Care Echocardiography Service, Intermountain Medical Center, 5121 South Cottonwood Street, Murray, UT, 84157, USA.,Division of Pulmonary and Critical Care Medicine, University of Utah, 30 North 1900 East, 701 Wintrobe Building, Salt Lake City, UT, 84132, USA.,Division of Pediatric Critical Care, Department of Pediatrics, University of Utah, 295 Chipeta Way, Salt Lake City, UT, 84108, USA
| | - Daniel B Knox
- Division of Pulmonary and Critical Care Medicine, University of Utah, 30 North 1900 East, 701 Wintrobe Building, Salt Lake City, UT, 84132, USA.,Division of Pulmonary, Allergy, and Critical Care Medicine, University of Massachusetts, 55 Lake Avenue North, Worchester, MA, 01655, USA
| | - Samuel M Brown
- Critical Care Echocardiography Service, Intermountain Medical Center, 5121 South Cottonwood Street, Murray, UT, 84157, USA.,Division of Pulmonary and Critical Care Medicine, University of Utah, 30 North 1900 East, 701 Wintrobe Building, Salt Lake City, UT, 84132, USA
| | - Colin K Grissom
- Critical Care Echocardiography Service, Intermountain Medical Center, 5121 South Cottonwood Street, Murray, UT, 84157, USA.,Division of Pulmonary and Critical Care Medicine, University of Utah, 30 North 1900 East, 701 Wintrobe Building, Salt Lake City, UT, 84132, USA
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Knox DB, Lanspa MJ, Kuttler KG, Brewer SC, Brown SM. Phenotypic clusters within sepsis-associated multiple organ dysfunction syndrome. Intensive Care Med 2015; 41:814-22. [PMID: 25851384 DOI: 10.1007/s00134-015-3764-7] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 03/18/2015] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Sepsis is a devastating condition that is generally treated as a single disease. Identification of meaningfully distinct clusters may improve research, treatment and prognostication among septic patients. We therefore sought to identify clusters among patients with severe sepsis or septic shock. METHODS We retrospectively studied all patients with severe sepsis or septic shock admitted directly from the emergency department to the intensive care units (ICUs) of three hospitals, 2006-2013. Using age and Sequential Organ Failure Assessment (SOFA) subscores, we defined clusters utilizing self-organizing maps, a method for representing multidimensional data in intuitive two-dimensional grids to facilitate cluster identification. RESULTS We identified 2533 patients with severe sepsis or septic shock. Overall mortality was 17 %, with a mean APACHE II score of 24, mean SOFA score of 8 and a mean ICU stay of 5.4 days. Four distinct clusters were identified; (1) shock with elevated creatinine, (2) minimal multi-organ dysfunction syndrome (MODS), (3) shock with hypoxemia and altered mental status, and (4) hepatic disease. Mortality (95 % confidence intervals) for these clusters was 11 (8-14), 12 (11-14), 28 (25-32), and 21 (16-26) %, respectively (p < 0.0001). Regression modeling demonstrated that the clusters differed in the association between clinical outcomes and predictors, including APACHE II score. CONCLUSIONS We identified four distinct clusters of MODS among patients with severe sepsis or septic shock. These clusters may reflect underlying pathophysiological differences and could potentially facilitate tailored treatments or directed research.
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Affiliation(s)
- Daniel B Knox
- Pulmonary and Critical Care, Intermountain Medical Center, Salt Lake City, USA,
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Brown SM, Tate Q, Jones JP, Knox DB, Kuttler KG, Lanspa M, Rondina MT, Grissom CK, Behera S, Mathews VJ, Morris A. Initial fractal exponent of heart rate variability is associated with success of early resuscitation in patients with severe sepsis or septic shock: a prospective cohort study. J Crit Care 2013; 28:959-63. [PMID: 23958243 DOI: 10.1016/j.jcrc.2013.07.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 07/08/2013] [Accepted: 07/09/2013] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Heart rate variability (HRV) reflects autonomic nervous system tone as well as the overall health of the baroreflex system. We hypothesized that loss of complexity in HRV upon intensive care unit (ICU) admission would be associated with unsuccessful early resuscitation of sepsis. METHODS We prospectively enrolled patients admitted to ICUs with severe sepsis or septic shock from 2009 to 2011. We studied 30 minutes of electrocardiogram, sampled at 500 Hz, at ICU admission and calculated heart rate complexity via detrended fluctuation analysis. Primary outcome was vasopressor independence at 24 hours after ICU admission. Secondary outcome was 28-day mortality. RESULTS We studied 48 patients, of whom 60% were vasopressor independent at 24 hours. Five (10%) died within 28 days. The ratio of fractal alpha parameters was associated with both vasopressor independence and 28-day mortality (P = .04) after controlling for mean heart rate. In the optimal model, Sequential Organ Failure Assessment score and the long-term fractal α parameter were associated with vasopressor independence. CONCLUSIONS Loss of complexity in HRV is associated with worse outcome early in severe sepsis and septic shock. Further work should evaluate whether complexity of HRV could guide treatment in sepsis.
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Affiliation(s)
- Samuel M Brown
- Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT; Pulmonary and Critical Care Medicine, University of Utah School of Medicine, Salt Lake City, UT.
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