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Article

Association of Chronic Cough and Pulmonary Function With 6-Minute Walk Test Performance in HIV Infection

by Monica Campo; Kisann K. Oursler; Laurence Huang; Matthew Goetz; David Rimland; Guy Soo Hoo; Sheldon Brown; Maria Rodriguez-Barradas; David Au; Kathleen M. Akguen; Shahida Shahrir; Kristina Crothers

2014

Subjects
  • Health Sciences, Medicine and Surgery
  • Biology, Virology
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Objective: Chronic lung disease has been associated with greater impairment in self-reported physical function in HIV-infected patients. We sought to study this association using objective measures of physical function and pulmonary function. Design: Baseline data from the Examinations of HIV Associated Lung Emphysema study, a multicenter observational cohort of HIVinfected and uninfected veterans. Methods: We assessed the association between clinical, laboratory, and pulmonary function measures with 6-minute walk test (6-MWT). Multivariable linear regression models were generated to identify factors associated with 6-MWT performance. Results: Three hundred forty participants completed 6-MWT (mean age 55 years), with 68% blacks, 94% men, and 62% current smokers. Overall, 180 (53%) were HIV-infected and 63 (19%) had spirometry-defined chronic obstructive pulmonary disease. In a multivariable model, age, current smoking, and obesity (body mass index < 30) were independently associated with lower 6-MWT performance, but HIV infection was not; there was a significant interaction between HIV and chronic cough, such that distance walked among HIV-infected participants with chronic cough was 51.76 m less (P = 0.04) compared with those without cough or HIV. Among HIV-infected participants, the forced expiratory volume in 1 second (FEV1, percent predicted), to a greater extent than total lung capacity or diffusing capacity, attenuated the association with chronic cough; decreased FEV1 was independently associated with lower 6-MWT performance in those with HIV. Conclusions: Older age, current smoking, and airflow limitation were important determinants of 6-MWT performance in the HIVinfected participants. These findings suggest that potential interventions to improve physical function may include early management of respiratory symptoms and airflow limitation.

Article

The VACS Index Predicts Mortality in a Young, Healthy HIV Population Starting Highly Active Antiretroviral Therapy

by Ionut Bebu; Janet Tate; David Rimland; Octavio Mesner; Grace E. Macalino; Anuradha Ganesan; Jason F. Okulicz; Mary Bavaro; Amy C. Weintrob; Amy C. Justice; Brian K. Agan

2014

Subjects
  • Biology, Virology
  • Health Sciences, Medicine and Surgery
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Background: The Veterans Aging Cohort Study (VACS) index is a weighted combination of age and 8 clinical variables. It has been well correlated with all-cause mortality among HIV-infected patients. The US Military HIV Natural History Study (NHS) cohort provides a different validation population profile, being younger and healthier. A significant portion of the US HIV population is similarly composed; so, evaluation of the VACS index in this population is of great interest. Methods: NHS subjects have medical history and laboratory data collected at 6-month visits. We performed an external validation of the VACS index in the NHS evaluating correlation, discrimination, and calibration for all-cause mortality after highly active antiretroviral therapy initiation (HI). We then tested whether combining longitudinal VACS index values at different time points improves prediction of mortality. Results: The VACS index at 1 year after HI was well correlated with all-cause mortality (Harrell c statistic 0.78), provided good discrimination (log-rank P < 0.05), and was marginally well calibrated using Brier score. Accounting for VACS index at HI and 6 months after HI significantly improved a standard model, including only the VACS index at 1 year after HI (net reclassification improvement = 25.2%, 95% CI: 10.9% to 48.9%). Conclusions: The VACS index was well correlated and provided good discrimination with respect to all-cause mortality among highly active antiretroviral therapy initiating subjects in the NHS. Moderate overprediction of mortality in this young, healthy population suggests minor recalibration that could improve fit among similar patients. Considering VACS index at HI and 6 months improved outcome prediction and allowed earlier risk assessment.

Article

Sleep Disturbance Among HIV-Infected and Uninfected Veterans

by Julie A. Womack; Terrence E. Murphy; Harini Bathulapalli; Kathleen M. Akgun; Cynthia Gibert; Ken M. Kunisaki; David Rimland; Maria Rodriguez-Barradas; H. Klar Yaggi; Amy C. Justice; Nancy S. Redeker

2017

Subjects
  • Health Sciences, Nursing
  • Health Sciences, General
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Article

Unhealthy Alcohol and Illicit Drug Use are Associated with Decreased Quality of HIV Care

by P. Todd Korthuis; David A. Fiellin; Kathleen A. McGinnis; Melissa Skanderson; Amy C. Justice; Adam J. Gordon; Donna Almario Doebler; Steven M. Asch; Lynn E. Fiellin; Kendall Bryant; Cynthia L. Gibert; Stephen Crystal; Matthew Bidwell Goetz; David Rimland; Maria C. Rodriguez-Barradas; Kevin L. Kraemer

2012

Subjects
  • Health Sciences, Immunology
  • Health Sciences, Epidemiology
  • Health Sciences, General
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HIV-infected patients with substance use experience suboptimal health outcomes, possibly because of variations in care. OBJECTIVES: To assess the association between substance use and the quality of HIV care (QOC) received. RESEARCH DESIGN: Retrospective cohort study. SUBJECTS: HIV-infected patients enrolled in the Veterans Aging Cohort Study. MEASURES: We collected self-report substance use data and abstracted 9 HIV quality indicators (QIs) from medical records. Independent variables were unhealthy alcohol use (AUDIT-C score ≥4) and illicit drug use (self-report of stimulants, opioids, or injection drug use in past year). Main outcome was the percentage of QIs received, if eligible. We estimated associations between substance use and QOC using multivariable linear regression. RESULTS: The majority of the 3410 patients were male (97.4%) and black (67.0%) with a mean age of 49.1 years (SD = 8.8). Overall, 25.8% reported unhealthy alcohol use, 22% illicit drug use, and participants received 81.5% (SD = 18.9) of QIs. The mean percentage of QIs received was lower for those with unhealthy alcohol use versus not (59.3% vs. 70.0%, P < 0.001) and those using illicit drugs vs. not (57.8% vs. 70.7%, P < 0.001). In multivariable models, unhealthy alcohol use (adjusted β-2.74; 95% confidence interval:-4.23 to-1.25) and illicit drug use (adjusted β-3.51; 95% CI:-4.99 to-2.02) remained inversely associated with the percentage of QIs received. CONCLUSIONS: Although the overall QOC for these HIV-infected Veteran patients was high, gaps persist for those with unhealthy alcohol and illicit drug use. Interventions that address substance use in HIV-infected patients may improve the QOC received.

Article

Comorbid diabetes and the risk of progressive chronic kidney disease in HIV-infected adults: Data from the Veterans Aging Cohort Study

by Raj Medapalli; Chirag R. Parikh; Kirsha Gordon; Sheldon T. Brown; Adeel A. Butt; Cynthia L. Gibert; David Rimland; Maria C. Rodriguez-Barradas; Chung-Chou Chang; Amy C. Justice; John Chijiang He; Christina M. Wyatt

2012

Subjects
  • Health Sciences, Immunology
  • Health Sciences, General
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Introduction: Approximately, 15% of HIV-infected individuals have comorbid diabetes. Studies suggest that HIV and diabetes have an additive effect on chronic kidney disease (CKD) progression; however, this observation may be confounded by differences in traditional CKD risk factors. Methods: We studied a national cohort of HIV-infected and matched HIV-uninfected individuals who received care through the Veterans Healthcare Administration. Subjects were divided into 4 groups based on baseline HIV and diabetes status, and the rate of progression to an estimated glomerular filtration rate (eGFR) < 45 mL/min/1.73m was compared using Cox-proportional hazards modeling to adjust for CKD risk factors. Results: About 31,072 veterans with baseline eGFR ≥45 mL/min/1.73m 2 (10,626 with HIV only, 5088 with diabetes only, and 1796 with both) were followed for a median of 5 years. Mean baseline eGFR was 94 mL/min/1.73m 2 , and 7% progressed to an eGFR < 45 mL/min/1.73m 2 . Compared with those without HIV or diabetes, the relative rate of progression was increased in individuals with diabetes only [adjusted hazard ratio (HR) 2.48; 95% confidence interval (CI): 2.19 to 2.80], HIV only [HR: 2.80, 95% CI: 2.50 to 3.15] , and both HIV and diabetes [HR: 4.47, 95% CI: 3.87 to 5.17]. DISCUSSION:: Compared with patients with only HIV or diabetes, patients with both diagnoses are at significantly increased risk of progressive CKD even after adjusting for traditional CKD risk factors. Future studies should evaluate the relative contribution of complex comorbidities and accompanying polypharmacy to the risk of CKD in HIV-infected individuals and prospectively investigate the use of cART, glycemic control, and adjunctive therapy to delay CKD progression.

Article

Medical Intensive Care Unit Admission Among Patients With and Without HIV, Hepatitis C Virus, and Alcohol-Related Diagnoses in the United States: A National, Retrospective Cohort Study, 1997-2014

by Christopher T. Rentsch; Janet P. Tate; Tessa Steel; Adeel A. Butt; Cynthia L. Gibert; Laurence Huang; Margaret Pisani; Guy W. Soo Hoo; Stephen Crystal; Maria C. Rodriguez-Barradas; Sheldon T. Brown; Matthew S. Freiberg; Christopher J. Graber; Joon W. Kim; David Rimland; Amy C. Justice; David A. Fiellin; Kristina A. Crothers; Kathleen M. Akgun

2019

Subjects
  • Health Sciences, Medicine and Surgery
  • Health Sciences, Public Health
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Background:HIV, hepatitis C virus (HCV), and alcohol-related diagnoses (ARD) independently contribute increased risk of all-cause hospitalization. We sought to determine annual medical intensive care unit (MICU) admission rates and relative risk of MICU admission between 1997 and 2014 among people with and without HIV, HCV, and ARD, using data from the largest HIV and HCV care provider in the United States. Setting:Veterans Health Administration. Methods:Annual MICU admission rates were calculated among 155,550 patients in the Veterans Aging Cohort Study by HIV, HCV, and ARD status. Adjusted rate ratios and 95% confidence intervals (CIs) were estimated with Poisson regression. Significance of trends in age-adjusted admission rates were tested with generalized linear regression. Models were stratified by calendar period to identify shifts in MICU admission risk over time.Results:Compared to HIV-/HCV-/ARD- patients, relative risk of MICU admission decreased among HIV-mono-infected patients from 61% (95% CI: 1.56 to 1.65) in 1997-2009% to 21% (95% CI: 1.16 to 1.27) in 2010-2014, increased among HCV-mono-infected patients from 22% (95% CI: 1.16 to 1.29) in 1997-2009% to 54% (95% CI: 1.43 to 1.67) in 2010-2014, and remained consistent among patients with ARD only at 46% (95% CI: 1.42 to 1.50). MICU admission rates decreased by 48% among HCV-uninfected patients (P-trend <0.0001) but did not change among HCV+ patients (P-trend = 0.34). Conclusion:HCV infection and ARD remain key contributors to MICU admission risk. The impact of each of these conditions could be mitigated with combination of treatment of HIV, HCV, and interventions targeting unhealthy alcohol use.

Article

Herpes Zoster and Herpes Zoster Vaccine Rates Among Adults Living With and Without HIV in the Veterans Aging Cohort Study

by Kellie L. Hawkins; Kirsha S. Gordon; Myron J. Levin; Adriana Weinberg; Catherine Battaglia; Maria C. Rodriguez-Barradas; Sheldon T. Brown; David Rimland; Amy Justice; Janet Tate; Kristine M. Erlandson

2018

Subjects
  • Health Sciences, Immunology
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Background:Despite historically high rates of herpes zoster among people living with HIV (PLWH), comparative studies of herpes zoster by HIV serostatus are lacking since the advent of combination antiretroviral therapy and availability of zoster vaccine. Methods:Annual rates (2002-2015) of first-episode herpes zoster and zoster vaccination were calculated for PLWH and uninfected adults in the Veterans Aging Cohort Study and stratified by HIV serostatus and age. Herpes zoster was captured using ICD9 codes and vaccine receipt with procedural codes and pharmacy data. Results:Of 45,177 PLWH and 103,040 uninfected veterans, rates of herpes zoster decreased among PLWH (17.6-8.1/1000) over the study period but remained higher than uninfected adults (4.1/1000) at the end of study period. Rates were higher in PLWH with lower CD4 (<200 vs >500 cells/μL: 18.0 vs 6.8/1000) and unsuppressed vs suppressed HIV-1 RNA (21.8 vs 7.1/1000). Restricted to virologically suppressed participants with CD4 >350 cells per microliter, herpes zoster rates were similar among PLWH aged younger than 60 years and aged 60 years and older in 2015 (6.6 vs 6.7/1000) but higher than all uninfected age groups. At study end, cumulative receipt of zoster vaccine for PLWH aged 60 years and older was less than half that of uninfected veterans: 98.7 vs 215.2/1000. Conclusions:Herpes zoster rates among PLWH have markedly decreased, but, even in cART-treated individuals, remain 50% higher than uninfected adults. Lower rates of zoster vaccine receipt combined with high rates of herpes zoster support the need for a safe and effective vaccine against herpes zoster for PLWH, formal zoster vaccine guidelines for PLWH, and consideration for expanded use at younger ages.

Article

Association of COPD With Risk for Pulmonary Infections Requiring Hospitalization in HIV-Infected Veterans

by Engi F. Attia; Kathleen A. McGinnis; Laura C. Feemster; Kathleen M. Akgün; Adeel A. Butt; Christopher J. Graber; Michael J. Fine; Matthew Bidwell Goetz; Maria C. Rodriguez-Barradas; Margaret A. Pisani; Hilary A. Tindle; Sheldon T. Brown; Guy W. Soo Hoo; David Rimland; Cynthia L. Gibert; Laurence Huang; Matthew S. Freiberg; Catherine L. Hough; Kristina Crothers

2015

Subjects
  • Health Sciences, Epidemiology
  • Health Sciences, Immunology
  • Health Sciences, Medicine and Surgery
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Background: Pulmonary infections remain more common in HIV-infected (HIV+) compared to uninfected individuals. The increase in chronic lung diseases among aging HIV+ individuals may contribute to this persistent risk. We sought to determine whether chronic obstructive pulmonary disease (COPD) is an independent risk factor for different pulmonary infections requiring hospitalization among HIV+ patients. Methods: We analyzed data from 41,993 HIV+ Veterans in the nationwide Veterans Aging Cohort Study Virtual Cohort (VACS-VC) from 1996–2009. Using ICD-9 codes, we identified baseline comorbid conditions, including COPD, and incident community-acquired pneumonia (CAP), pulmonary tuberculosis (TB) and Pneumocystis jirovecii pneumonia (PCP) requiring hospitalization within two years after baseline. We used multivariable Poisson regression to determine incidence rate ratios (IRR) associated with COPD for each type of pulmonary infection, adjusting for comorbidities, CD4+ cell count, HIV viral load, smoking status, substance use, vaccinations and calendar year at baseline. Results: Unadjusted incidence rates of CAP, TB and PCP requiring hospitalization were significantly higher among persons with COPD compared to those without COPD (CAP: 53.9 vs. 19.4 per 1,000 person-years; TB: 8.7 vs. 2.8; PCP: 15.5 vs. 9.2; p ≤0.001). In multivariable Poisson regression models, COPD was independently associated with increased risk of CAP, TB and PCP (IRR 1.94, 95% CI 1.64–2.30; IRR 2.60, 95% CI 1.70–3.97; and IRR 1.48, 95% CI 1.10–2.01, respectively). Conclusions: COPD is an independent risk factor for CAP, TB and PCP requiring hospitalization among HIV+ individuals. As the HIV+ population ages, the growing burden of COPD may confer substantial risk for pulmonary infections.

Article

Racial Comparison of D-Dimer Levels in US Male Military Personnel Before and After HIV Infection and Viral Suppression

by Thomas A. O'Bryan; Brian K. Agan; Russell P. Tracy; Matthew S. Freiberg; Jason F. Okulicz; Kaku So-Armah; Anuradha Ganesan; David Rimland; Tahaniyat Lalani; Robert G. Deiss; Edmund C. Tramont

2018

Subjects
  • Health Sciences, Medicine and Surgery
  • Health Sciences, Immunology
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Background: D-dimer blood levels in persons with HIV infection are associated with risk of serious non-AIDS conditions and death. Black race has been correlated with higher D-dimer levels in several studies. We examined the effects of race and HIV on D-dimer over time and the impact of viral load suppression by longitudinally comparing changes in levels among healthy young adult male African Americans and whites before HIV seroconversion and before and after initiation of antiretroviral therapy (ART). Methods: We analyzed D-dimer levels and clinical and laboratory data of 192 participants enrolled in the US Military HIV Natural History Study, a 30-year cohort of military personnel infected with HIV. D-dimer levels were measured on stored sera from each participant at 3 time points: (1) before HIV seroconversion (Pre-SC), (2) ≥6 months after HIV seroconversion but before ART initiation (Post-SC), and (3) ≥6 months after ART with documented viral suppression (Post-ART). Levels were compared at each time point using nonparametric and logistic regression analysis. Results: Compared with whites (n = 106), African Americans (n = 86) had higher D-dimer levels post-SC (P = 0.007), but in the same individuals, pre-SC baseline and post-ART levels were similar (P = 0.40 and P = 0.99, respectively). There were no racial differences in CD4 cell counts, HIV RNA viral load, time from estimated seroconversion to ART initiation, and duration on ART. Conclusions: Observed longitudinally, racial differences in D-dimer levels were seen only during HIV viremia. Higher levels of D-dimer commonly observed in African Americans are likely due to factors in addition to race.
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