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Article

Accurate characterization of extravascular lung water in acute respiratory distress syndrome

by David Berkowitz; Pajman A. Danai; Stephanie Eaton; Marc Moss; Greg Martin

2008

Subjects
  • Health Sciences, General
  • Health Sciences, Toxicology
  • View Abstract

Abstract:Close

OBJECTIVES:: Measurements of extravascular lung water (EVLW) correlate to the degree of pulmonary edema and have substantial prognostic information in critically ill patients. Prior studies using single indicator thermodilution have reported that 21% to 35% of patients with clinical acute respiratory distress syndrome (ARDS) have normal EVLW (<10 mL/kg). Given that lung size is independent of actual body weight, we sought to determine whether indexing EVLW to predicted or adjusted body weight affects the frequency of increased EVLW in patients with ARDS. DESIGN:: Prospective, observational cohort study. SETTING:: Medical and surgical intensive care units at two academic hospitals. PATIENTS:: Thirty patients within 72 hrs of meeting American-European Consensus Conference definition of ARDS and 14 severe sepsis patients without ARDS. INTERVENTIONS:: None. MEASUREMENT AND MAIN RESULTS:: EVLW was measured for 7 days by PiCCO transpulmonary thermodilution; 225 measurements of EVLW indexed to actual body weight (ActBW) were compared with EVLW indexed to predicted body weight (PBW) and adjusted body weight (AdjBW). Mean EVLW indexed to ActBW was 12.7 mg/kg for ARDS patients and 7.8 mg/kg for non-ARDS sepsis patients (p < .0001). In all patients, EVLW increased an average of 1.1 ± 2.1 mL/kg when indexed to AdjBW and 2.0 ± 4.1 mL/kg when indexed to PBW. Indexing EVLW to PBW or AdjBW increased the proportion of ARDS patients with elevated EVLW (each p < .05) without increasing the frequency of elevated EVLW in non-ARDS patients. EVLW indexed to PBW had a stronger correlation to Lung Injury Score (r = .39 vs. r = .17) and Pao2/Fio2 ratio (r = .25 vs. r = .10) than did EVLW indexed to ActBW. CONCLUSIONS:: Indexing EVLW to PBW or AdjBW reduces the number of ARDS patients with normal EVLW and correlates better to Lung Injury Score and oxygenation than using ActBW. Studies are needed to confirm the presumed superiority of this method for diagnosing ARDS and to determine the clinical treatment implications.

Chapter

Management of hyperglycemia in hospitalized patients

by Guillermo Umpierrez; Dawn Smiley-Byrd; D Smiley

2010-01-01

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Hyperglycemia is a common occurrence in hospitalized patients, and several studies have shown a strong association between hyperglycemia and the risk of complications, prolonged hospitalization, and death for patients with and without diabetes. Past studies have shown that glucose management in the intensive care setting improves clinical outcomes by reducing the risk of multiorgan failure, systemic infection, and mortality, and that the importance of hyperglycemia also applies to noncritically ill patients. Based on several past observational and interventional studies, aggressive control of blood glucose had been recommended for most adult patients with critical illness. Recent randomized controlled trials, however, have shown that aggressive glycemic control compared to conventional control with higher blood glucose targets is associated with an increased risk of hypoglycemia and may not result in the improvement in clinical outcomes. This review aims to give an overview of the evidence for tight glycemic control (blood glucose targets <140 mg/dL), the evidence against tight glycemic control, and the updated recommendations for the inpatient management of diabetes in the critical care setting and in the general wards. © 2010 New York Academy of Sciences.

Article

Clinical Epidemiology of Bocavirus, Rhinovirus, Two Polyomaviruses and Four Coronaviruses in HIV-Infected and HIV-Uninfected South African Children

by Marta C. Nunes; Zachary Kuschner; Zelda Rabede; Richard Madimabe; Nadia Van Niekerk; Jackie Moloi; Locadiah Kuwanda; John W. Rossen; Keith Klugman; Peter V. Adrian; Shabir A. Madhi

2014

Subjects
  • Biology, Virology
  • Health Sciences, Epidemiology
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Background: Advances in molecular diagnostics have implicated newly-discovered respiratory viruses in the pathogenesis of pneumonia. We aimed to determine the prevalence and clinical characteristics of human bocavirus (hBoV), human rhinovirus (hRV), polyomavirus-WU (WUPyV) and -KI (KIPyV) and human coronaviruses (CoV)-OC43, -NL63, -HKU1 and -229E among children hospitalized with lower respiratory tract infections (LRTI). Methods: Multiplex real-time reverse-transcriptase polymerase chain reaction was undertaken on archived nasopharyngeal aspirates from HIV-infected and -uninfected children ( < 2 years age) hospitalized for LRTI, who had been previously investigated for respiratory syncytial virus, human metapneumovirus, parainfluenza I-III, adenovirus and influenza A/B. Results: At least one of these viruses were identified in 274 (53.0%) of 517 and in 509 (54.0%) of 943 LRTI-episodes in HIV-infected and -uninfected children, respectively. Human rhinovirus was the most prevalent in HIV-infected (31.7%) and - uninfected children (32.0%), followed by CoV-OC43 (12.2%) and hBoV (9.5%) in HIV-infected; and by hBoV (13.3%) and WUPyV (11.9%) in HIV-uninfected children. Polyomavirus-KI (8.9% vs. 4.8%; p = 0.002) and CoV-OC43 (12.2% vs. 3.6%; p < 0.001) were more prevalent in HIV-infected than -uninfected children. Combined with previously-tested viruses, respiratory viruses were identified in 60.9% of HIV-infected and 78.3% of HIV-uninfected children. The newly tested viruses were detected at high frequency in association with other respiratory viruses, including previously-investigated viruses (22.8% in HIV-infected and 28.5% in HIV-uninfected children). Conclusions: We established that combined with previously-investigated viruses, at least one respiratory virus was identified in the majority of HIV-infected and HIV-uninfected children hospitalized for LRTI. The high frequency of viral coinfections illustrates the complexities in attributing causality to specific viruses in the aetiology of LRTI and may indicate a synergetic role of viral co-infections in the pathogenesis of childhood LRTI.

Article

Rationale and protocol for estimating the economic value of a multicomponent quality improvement strategy for diabetes care in South Asia.

by Kavita Singh; Mohammed Ali; Raji Devarajan; Roopa Shivashankar; Dimple Kondal; Vamadevan S. Ajay; V. Usha Menon; Premlata K. Varthakavi; Vijay Viswanathan; Mala Dharmalingam; Ganapati Bantwal; Rakesh Kumar Sahay; Muhammad Qamar Masood; Rajesh Khadgawat; Ankush Desai; Dorairaj Prabhakaran; Kabayam Venkat Narayan; Victoria Phillips; Nikhil Tandon

2019

Subjects
  • Health Sciences, Public Health
  • Economics, General
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Background: Economic dimensions of implementing quality improvement for diabetes care are understudied worldwide. We describe the economic evaluation protocol within a randomised controlled trial that tested a multi-component quality improvement (QI) strategy for individuals with poorly-controlled type 2 diabetes in South Asia. Methods/design: This economic evaluation of the Centre for Cardiometabolic Risk Reduction in South Asia (CARRS) randomised trial involved 1146 people with poorly-controlled type 2 diabetes receiving care at 10 diverse diabetes clinics across India and Pakistan. The economic evaluation comprises both a within-trial cost-effectiveness analysis (mean 2.5 years follow up) and a microsimulation model-based cost-utility analysis (life-time horizon). Effectiveness measures include multiple risk factor control (achieving HbA1c < 7% and blood pressure < 130/80 mmHg and/or LDL-cholesterol< 100 mg/dl), and patient reported outcomes including quality adjusted life years (QALYs) measured by EQ-5D-3 L, hospitalizations, and diabetes related complications at the trial end. Cost measures include direct medical and non-medical costs relevant to outpatient care (consultation fee, medicines, laboratory tests, supplies, food, and escort/accompanying person costs, transport) and inpatient care (hospitalization, transport, and accompanying person costs) of the intervention compared to usual diabetes care. Patient, healthcare system, and societal perspectives will be applied for costing. Both cost and health effects will be discounted at 3% per year for within trial cost-effectiveness analysis over 2.5 years and decision modelling analysis over a lifetime horizon. Outcomes will be reported as the incremental cost-effectiveness ratios (ICER) to achieve multiple risk factor control, avoid diabetes-related complications, or QALYs gained against varying levels of willingness to pay threshold values. Sensitivity analyses will be performed to assess uncertainties around ICER estimates by varying costs (95% CIs) across public vs. private settings and using conservative estimates of effect size (95% CIs) for multiple risk factor control. Costs will be reported in US$ 2018. Discussion: We hypothesize that the additional upfront costs of delivering the intervention will be counterbalanced by improvements in clinical outcomes and patient-reported outcomes, thereby rendering this multi-component QI intervention cost-effective in resource constrained South Asian settings. Trial registration: ClinicalTrials.gov: NCT01212328.

Article

The Effect of Commuting Patterns on HIV Care Attendance Among Men Who Have Sex With Men (MSM) in Atlanta, Georgia.

by Sharoda Dasgupta; Michael Kramer; Eli Rosenberg; Travis Sanchez; Landon Reed; Patrick Sullivan

2015

Subjects
  • Health Sciences, Public Health
  • Health Sciences, Health Care Management
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BACKGROUND: Travel-related barriers to human immunodeficiency virus (HIV) care, such as commute time and mode of transportation, have been reported in the United States. OBJECTIVE: The objective of the study was to investigate the association between public transportation use and HIV care attendance among a convenience sample of Atlanta-based, HIV-positive men who have sex with men (MSM), evaluate differences across regions of residence, and estimate the relationship between travel distance and time by mode of transportation taken to attend appointments. METHODS: We used Poisson regression to estimate the association between use of public transportation to attend HIV-related medical visits and frequency of care attendance over the previous 12 months. The relationship between travel distance and commute time was estimated using linear regression. Kriging was used to interpolate commute time to visually examine geographic differences in commuting patterns in relation to access to public transportation and population-based estimates of household vehicle ownership. RESULTS: Using public transportation was associated with lower rates of HIV care attendance compared to using private transportation, but only in south Atlanta (south: aRR: 0.75, 95% CI 0.56, 1.0, north: aRR: 0.90, 95% CI 0.71, 1.1). Participants living in south Atlanta were more likely to have longer commute times associated with attending HIV visits, have greater access to public transportation, and may live in areas with low vehicle ownership. A majority of attended HIV providers were located in north and central Atlanta, despite there being participants living all across the city. Estimated commute times per mile traveled were three times as high among public transit users compared to private transportation users. CONCLUSIONS: Improving local public transit and implementing use of mobile clinics could help address travel-related barriers to HIV care.

Article

Barriers to psychological care among primary caregivers of children undergoing hematopoietic stem cell transplantation

by Katie A. Devine; Sharon L. Manne; Laura Mee; Abraham S. Bartell; Stephen A. Sands; Shannon Myers-Virtue; Pamela Ohman-Strickland

2016

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Purpose: This substudy of an intervention trial aimed to describe barriers to participation in psychological care among primary caregivers of children who were about to undergo a hematopoietic stem cell transplantation (HSCT), including demographic and medical correlates. Method: Three hundred and twelve primary caregivers of children undergoing HSCT who were approached to participate in a psychological intervention trial (n = 218 enrollees and 94 decliners) completed a measure of barriers to psychological care. Results: The most frequently endorsed barriers to care were focusing on the child as priority, not wanting to leave the child’s bedside, and already having adequate psychosocial support. The least frequently endorsed barriers were location, wait times, and stigma around seeking psychological care. Conclusions: Results suggest that explaining how psychological care for a primary caregiver can positively affect their ill child may reduce barriers to seeking needed support services. Certain practical barriers to care may be irrelevant in inpatient settings where psychological support is offered.

Article

Monoclonal antibodies in the treatment of multiple myeloma: current status and future perspectives

by Sagar Lonial; B Durie; A Palumbo; J San-Miguel

2016

Subjects
  • Health Sciences, Oncology
  • Health Sciences, Pharmacology
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The treatment landscape for patients with multiple myeloma (MM) is constantly evolving. Over the past decade, the introduction of novel agents such as proteasome inhibitors and immunomodulatory drugs has led to notable changes in therapeutic strategy, and improvements in survival, yet MM remains incurable in the vast majority of cases. More recently, a targeted approach to MM treatment has emerged, using monoclonal antibodies (mAbs) to target antigens expressed on the surface of MM cells. MAbs tested to date kill MM cells via the host's immune system and/or by promoting apoptosis, and appear to have generally improved tolerability compared with currently available treatments. Due to their distinct mode of action, mAbs are promising both for patients who have exhausted current regimens, and as part of first-line treatments in newly diagnosed patients. This review examines the recent developments in mAb-based therapy for MM, primarily focused on those agents in ongoing clinical testing.

Article

Correlates of Retention in HIV Care After Release from Jail: Results from a Multi-site Study

by Amy L. Althoff; Alexei Zelenev; Jaimie P. Meyer; Jeannia Fu; Shan-Estelle Brown; Panagiotis Vagenas; Ann K. Avery; Jacqueline Cruzado-Quinones; Anne Spaulding; Frederick L. Altice

2013

Subjects
  • Health Sciences, Public Health
  • Sociology, Criminology and Penology
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Retention in care is key to effective HIV treatment, but half of PLWHA in the US are continuously engaged in care. Incarcerated individuals are an especially challenging population to retain, and empiric data specific to jail detainees is lacking. We prospectively evaluated correlates of retention in care for 867 HIV-infected jail detainees enrolled in a 10-site demonstration project. Sustained retention in care was defined as having a clinic visit during each quarter in the 6 month post-release period. The following were independently associated with retention: Being male (AOR = 2.10, p B 0.01), heroin use (AOR 1.49, p = 0.04), having an HIV provider (AOR 1.67, p = 0.02), and receipt of services: Discharge planning (AOR 1.50, p = 0.02) and disease management session (AOR 2.25, p B 0.01) during incarceration; needs assessment (AOR 1.59, p = 0.02), HIV education (AOR 2.03, p B 0.01), and transportation assistance (AOR 1.54, p = 0.02) after release. Provision of education and case management services improve retention in HIV care after release from jail.

Article

Neonatal Infectious Diseases: Evaluation of Neonatal Sepsis

by Andres Camacho-Gonzalez; Paul Spearman; Barbara Stoll

2013

Subjects
  • Health Sciences, Immunology
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Neonatal sepsis remains a feared cause of morbidity and mortality in the neonatal period. Maternal, neonatal, and environmental factors are associated with risk of infection, and a combination of prevention strategies, judicious neonatal evaluation, and early initiation of therapy are required to prevent adverse outcomes. This article reviews recent trends in epidemiology and provides an update on risk factors, diagnostic methods, and management of neonatal sepsis.

Article

Linking partner violence survivors to supportive services: impact of the M Health Community Network project on healthcare utilization

by Cari Clark; Martha Wetzel; Lynette M. Renner; Mary E. Logeais

2019

Subjects
  • Health Sciences, Public Health
  • Social Work
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Background: Intimate partner violence (IPV) is associated with adverse health effects and increased healthcare utilization. Systems-level interventions have been shown to be effective in identifying and referring survivors but little is known about how these strategies impact future utilization. The objective of this study is to examine the impact of a systems-level response on healthcare utilization among patients screening positive for IPV from November 2016 to February 2019 in a large multi-specialty outpatient health system in the Midwest. Methods: Using electronic health record (EHR) data, we identified patients who screened positive for IPV (N = 756) and categorized their response as accepted printed material (N = 116), accepted direct referrals (N = 85), declined both (N = 271), or missing (N = 255). We used negative binomial models to model post-period utilization as a function of decision group, pre-period utilization, and clinical and demographic factors. Results: After controlling for demographic characteristics and baseline utilization, the printed materials and direct referral groups had higher utilization rates than those who declined printed materials and direct referral during the post-period for every type of service. However, these differences were only statistically significant for outpatient, behavioral health, and social work services. Specifically, the visit rate for patients receiving printed materials was two times higher (rate ratio: 2.18; 95% CI: 1.21, 3.94) for behavioral health services and three times higher (rate ratio: 3.33; 95% CI: 1.3, 8.52) for social work services compared to those who refused printed material and direct referral. For those opting for a direct referral, the visit rate was two times higher for outpatient services (rate ratio: 1.97; 95% CI: 1.13, 3.42) compared to those who refused. Conclusions: Patients receiving printed materials or direct referrals had more social work and behavioral health visits, highlighting an important outcome of the protocol. However, higher utilization rates among outpatient services and a trend toward higher utilization of other services, including the emergency department, suggest greater health service utilization is not diminished by the systems level response - at least not within a two-year time frame.
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