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  1. Article ; Online: Management of perioperative acute coronary syndromes by mechanism: a practical approach.

    Tabit, Corey E / Nathan, Sandeep

    International anesthesiology clinics

    2020  Volume 59, Issue 1, Page(s) 61–65

    MeSH term(s) Acute Coronary Syndrome/therapy ; Humans ; Perioperative Care
    Language English
    Publishing date 2020-11-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 210757-0
    ISSN 1537-1913 ; 0020-5907
    ISSN (online) 1537-1913
    ISSN 0020-5907
    DOI 10.1097/AIA.0000000000000310
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Social determinants of health and hospital readmissions: can the HOSPITAL risk score be improved by the inclusion of social factors?

    Obuobi, Shirlene / Chua, Rhys F M / Besser, Stephanie A / Tabit, Corey E

    BMC health services research

    2021  Volume 21, Issue 1, Page(s) 5

    Abstract: Background: The HOSPITAL Risk Score (HRS) predicts 30-day hospital readmissions and is internationally validated. Social determinants of health (SDOH) such as low socioeconomic status (SES) affect health outcomes and have been postulated to affect ... ...

    Abstract Background: The HOSPITAL Risk Score (HRS) predicts 30-day hospital readmissions and is internationally validated. Social determinants of health (SDOH) such as low socioeconomic status (SES) affect health outcomes and have been postulated to affect readmission rates. We hypothesized that adding SDOH to the HRS could improve its predictive accuracy.
    Methods: Records of 37,105 inpatient admissions at the University of Chicago Medical Center were reviewed. HRS was calculated for each patient. Census tract-level SDOH then were combined with the HRS and the performance of the resultant "Social HRS" was compared against the HRS. Patients then were assigned to 1 of 7 typologies defined by their SDOH and a balanced dataset of 14,235 admissions was sampled from the larger dataset to avoid over-representation by any 1 sociodemographic group. Principal component analysis and multivariable linear regression then were performed to determine the effect of SDOH on the HRS.
    Results: The c-statistic for the HRS predicting 30-day readmission was 0.74, consistent with published values. However, the addition of SDOH to the HRS did not improve the c-statistic (0.71). Patients with unfavorable SDOH (no high-school, limited English, crowded housing, disabilities, and age > 65 yrs) had significantly higher HRS (p < 0.05 for all). Overall, SDOH explained 0.2% of the HRS.
    Conclusion: At an urban tertiary care center, the addition of census tract-level SDOH to the HRS did not improve its predictive power. Rather, the effects of SDOH are already reflected in the HRS.
    MeSH term(s) Aged ; Hospitals ; Humans ; Patient Readmission ; Risk Factors ; Social Determinants of Health ; Social Factors
    Language English
    Publishing date 2021-01-04
    Publishing country England
    Document type Journal Article
    ISSN 1472-6963
    ISSN (online) 1472-6963
    DOI 10.1186/s12913-020-05989-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Social determinants of health and hospital readmissions

    Shirlene Obuobi / Rhys F. M. Chua / Stephanie A. Besser / Corey E. Tabit

    BMC Health Services Research, Vol 21, Iss 1, Pp 1-

    can the HOSPITAL risk score be improved by the inclusion of social factors?

    2021  Volume 8

    Abstract: Abstract Background The HOSPITAL Risk Score (HRS) predicts 30-day hospital readmissions and is internationally validated. Social determinants of health (SDOH) such as low socioeconomic status (SES) affect health outcomes and have been postulated to ... ...

    Abstract Abstract Background The HOSPITAL Risk Score (HRS) predicts 30-day hospital readmissions and is internationally validated. Social determinants of health (SDOH) such as low socioeconomic status (SES) affect health outcomes and have been postulated to affect readmission rates. We hypothesized that adding SDOH to the HRS could improve its predictive accuracy. Methods Records of 37,105 inpatient admissions at the University of Chicago Medical Center were reviewed. HRS was calculated for each patient. Census tract-level SDOH then were combined with the HRS and the performance of the resultant “Social HRS” was compared against the HRS. Patients then were assigned to 1 of 7 typologies defined by their SDOH and a balanced dataset of 14,235 admissions was sampled from the larger dataset to avoid over-representation by any 1 sociodemographic group. Principal component analysis and multivariable linear regression then were performed to determine the effect of SDOH on the HRS. Results The c-statistic for the HRS predicting 30-day readmission was 0.74, consistent with published values. However, the addition of SDOH to the HRS did not improve the c-statistic (0.71). Patients with unfavorable SDOH (no high-school, limited English, crowded housing, disabilities, and age > 65 yrs) had significantly higher HRS (p < 0.05 for all). Overall, SDOH explained 0.2% of the HRS. Conclusion At an urban tertiary care center, the addition of census tract-level SDOH to the HRS did not improve its predictive power. Rather, the effects of SDOH are already reflected in the HRS.
    Keywords Public aspects of medicine ; RA1-1270
    Subject code 360
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Association Between Acute Exposure to Crime and Individual Systolic Blood Pressure.

    Wilson, W Wyatt / Chua, Rhys F M / Wei, Peng / Besser, Stephanie A / Tung, Elizabeth L / Kolak, Marynia / Tabit, Corey E

    American journal of preventive medicine

    2021  Volume 62, Issue 1, Page(s) 87–94

    Abstract: Introduction: Hypertension is associated with adverse cardiovascular outcomes and is geographically concentrated in urban underserved neighborhoods. This study examines the temporal-spatial association between individual exposure to violent crime and ... ...

    Abstract Introduction: Hypertension is associated with adverse cardiovascular outcomes and is geographically concentrated in urban underserved neighborhoods. This study examines the temporal-spatial association between individual exposure to violent crime and blood pressure.
    Methods: A retrospective observational cohort study analyzed 39,211 patients with 227,595 blood pressure measurements from 2014 to 2016 at 3 outpatient clinics at an academic medical center in Chicago. Patients were included in the study if they had documentation of blood pressure in the medical record and resided in census tracts with >1,000 observations. Geocoded violent crime events were obtained from the Chicago Police Department. Individual-level exposure was defined on the basis of spatial and temporal buffers around each patient's home. Spatial buffers included 100-, 250-, 500-, and 1,000-meter disc radii, and temporal buffers included 7, 30, and 60 days preceding each outpatient appointment. Systolic blood pressure measurements (mmHg) were abstracted from the electronic health record. Analysis was performed in 2019-2020.
    Results: For each violent crime event within 100 meters from home, systolic blood pressure increased by 0.14 mmHg within 7 days of exposure compared with 0.08 mmHg at 30 days of exposure. In analyses stratified by neighborhood cluster, systolic blood pressure increased by 0.37 mmHg among patients in the suburban affluent cluster relative to that among those in an extreme poverty cluster for the same spatial and temporal buffer.
    Conclusions: Exposure to a violent crime event was associated with increased blood pressure, with gradient effects by both distance and time from exposure.
    MeSH term(s) Blood Pressure ; Census Tract ; Crime ; Humans ; Residence Characteristics ; Retrospective Studies ; Risk Factors ; Violence
    Language English
    Publishing date 2021-09-15
    Publishing country Netherlands
    Document type Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 632646-8
    ISSN 1873-2607 ; 0749-3797
    ISSN (online) 1873-2607
    ISSN 0749-3797
    DOI 10.1016/j.amepre.2021.06.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: SALAD-BAAR: A numerical risk score for hospital admission or emergency department presentation in ambulatory patients with cardiovascular disease.

    Anyanwu, Emeka C / Chua, Rhys F M / Besser, Stephanie A / Sun, Deyu / Liao, James K / Tabit, Corey E

    Clinical cardiology

    2020  Volume 44, Issue 2, Page(s) 193–199

    Abstract: Background: While many interventions to reduce hospital admissions and emergency department (ED) visits for patients with cardiovascular disease have been developed, identifying ambulatory cardiac patients at high risk for admission can be challenging.!# ...

    Abstract Background: While many interventions to reduce hospital admissions and emergency department (ED) visits for patients with cardiovascular disease have been developed, identifying ambulatory cardiac patients at high risk for admission can be challenging.
    Hypothesis: A computational model based on readily accessible clinical data can identify patients at risk for admission.
    Methods: Electronic health record (EHR) data from a tertiary referral center were used to generate decision tree and logistic regression models. International Classification of Disease (ICD) codes, labs, admissions, medications, vital signs, and socioenvironmental variables were used to model risk for ED presentation or hospital admission within 90 days following a cardiology clinic visit. Model training and testing were performed with a 70:30 data split. The final model was then prospectively validated.
    Results: A total of 9326 patients and 46 465 clinic visits were analyzed. A decision tree model using 75 patient characteristics achieved an area under the curve (AUC) of 0.75 and a logistic regression model achieved an AUC of 0.73. A simplified 9-feature model based on logistic regression odds ratios achieved an AUC of 0.72. A further simplified numerical score assigning 1 or 2 points to each variable achieved an AUC of 0.66, specificity of 0.75, and sensitivity of 0.58. Prospectively, this final model maintained its predictive performance (AUC 0.63-0.60).
    Conclusion: Nine patient characteristics from routine EHR data can be used to inform a highly specific model for hospital admission or ED presentation in cardiac patients. This model can be simplified to a risk score that is easily calculated and retains predictive performance.
    MeSH term(s) Cardiovascular Diseases ; Emergency Service, Hospital ; Humans ; Patient Admission ; Risk Factors ; Salads ; Tertiary Care Centers
    Language English
    Publishing date 2020-10-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 391935-3
    ISSN 1932-8737 ; 0160-9289
    ISSN (online) 1932-8737
    ISSN 0160-9289
    DOI 10.1002/clc.23525
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: A retrospective analysis of high sensitivity cardiac troponin-T ranges in non-myocardial infarction emergency department visits.

    Kong, Nathan / Chua, Rhys F M / Besser, Stephanie A / Heelan, Louise / Nathan, Sandeep / Spiegel, Thomas F / van Wijk, Xander M R / Tabit, Corey E

    BMC cardiovascular disorders

    2021  Volume 21, Issue 1, Page(s) 283

    Abstract: Introduction: Current evidence suggests that high sensitivity cardiac troponin-T (hs-cTnT) values differ based on sex, race, age, and kidney function. However, most studies examining the relationship of hs-cTnT and these individual factors are in ... ...

    Abstract Introduction: Current evidence suggests that high sensitivity cardiac troponin-T (hs-cTnT) values differ based on sex, race, age, and kidney function. However, most studies examining the relationship of hs-cTnT and these individual factors are in healthy participants, leading to difficulty in interpreting hs-cTnT values in the Emergency Department (ED) setting. We seek to examine the relationship between hs-cTnT values and sex, race, age, and kidney function in a contemporary, urban academic setting.
    Methods: ED visits from June 2018 through April 2019 with at least 1 hs-cTnT and no diagnosis of acute myocardial infarction (AMI) at an academic medical center in the south side of Chicago were retrospectively analyzed. Median hs-cTnT values were stratified by sex (male or female), race (African American or Caucasian), age, estimated glomerular filtration rate (eGFR), and stage of chronic kidney disease.
    Results: 9679 encounters, representing 7989 distinct patients, were included for analysis (age 58 ± 18 years, 59% female, 85% black). Males had significantly higher median hs-cTnT values than females (16 [8-34] vs. 9 [6-22] ng/L, p < 0.001), African Americans had a significantly lower median value than Caucasians (10 [6-24] vs. 15 [6-29] ng/L, p < 0.001), and those with atrial fibrillation (27 [16-48] vs. 9 [6-19] ng/L, p < 0.001) and heart failure (28 [14-48] vs. 8 [6-15] ng/L, p < 0.001) had higher median values than those without. Median hs-cTnT values increased significantly with increased age and decreased eGFR. All relationships continued to be significant even after multivariable regression of sex, age, race, eGFR, presence of atrial fibrillation, and presence of heart failure (p < 0.01).
    Conclusions: Analysis of hs-cTnT in non-AMI patients during ED encounters showed that males have higher values than females, African Americans have lower values than Caucasians, those with atrial fibrillation and heart failure have higher values than those without, and that older age and lower eGFR were associated with higher median values.
    MeSH term(s) Academic Medical Centers ; Adult ; Age Factors ; Aged ; Atrial Fibrillation/blood ; Atrial Fibrillation/ethnology ; Atrial Fibrillation/physiopathology ; Biomarkers/blood ; Chicago/epidemiology ; Emergency Service, Hospital ; Female ; Glomerular Filtration Rate ; Heart Failure/blood ; Heart Failure/ethnology ; Heart Failure/physiopathology ; Humans ; Kidney/physiopathology ; Male ; Middle Aged ; Predictive Value of Tests ; Race Factors ; Renal Insufficiency, Chronic/blood ; Renal Insufficiency, Chronic/ethnology ; Renal Insufficiency, Chronic/physiopathology ; Retrospective Studies ; Sex Factors ; Troponin T/blood
    Chemical Substances Biomarkers ; Troponin T
    Language English
    Publishing date 2021-06-07
    Publishing country England
    Document type Comparative Study ; Journal Article
    ZDB-ID 2059859-2
    ISSN 1471-2261 ; 1471-2261
    ISSN (online) 1471-2261
    ISSN 1471-2261
    DOI 10.1186/s12872-021-02089-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Association of Rising Violent Crime With Blood Pressure and Cardiovascular Risk: Longitudinal Evidence From Chicago, 2014-2016.

    Tung, Elizabeth L / Chua, Rhys F M / Besser, Stephanie A / Lindau, Stacy Tessler / Kolak, Marynia / Anyanwu, Emeka C / Liao, James K / Tabit, Corey E

    American journal of hypertension

    2019  Volume 32, Issue 12, Page(s) 1192–1198

    Abstract: Background: The purpose of this study was to examine the longitudinal association between rising violent crime and elevated blood pressure (BP).: Methods: We analyzed 217,816 BP measurements from 17,783 adults during a temporal surge in violent crime ...

    Abstract Background: The purpose of this study was to examine the longitudinal association between rising violent crime and elevated blood pressure (BP).
    Methods: We analyzed 217,816 BP measurements from 17,783 adults during a temporal surge in violent crime in Chicago (2014-2016). Serial observations were abstracted from the electronic health record at an academic medical center and paired to the City of Chicago Police Data Portal. The violent crime rate (VCR) was calculated as the number of violent crimes per 1,000 population per year for each census tract. Longitudinal multilevel regression models were implemented to assess elevated BP (systolic BP ≥ 140 mm Hg or diastolic BP ≥ 90 mm Hg) as a function of the VCR, adjusting for patient characteristics, neighborhood characteristics, and time effects. Secondary dependent measures included elevated heart rate, obesity, missed outpatient appointments, all-cause hospital admissions, and cardiovascular hospital admissions.
    Results: At baseline, the median VCR was 41.3 (interquartile range: 15.2-66.8), with a maximum rise in VCR of 59.1 over the 3-year surge period. A 20-unit rise in the VCR was associated with 3% higher adjusted odds of having elevated BP (95% confidence interval [CI]: 1.01-1.06), 8% higher adjusted odds of missing an outpatient appointment (95% CI: 1.03-1.13), and 6% higher adjusted odds of having a cardiovascular-related hospital admission (95% CI: 1.01-1.12); associations were not significant for elevated heart rate and obesity.
    Conclusion: Rising violent crime was associated with increased BP during a temporal crime surge.
    MeSH term(s) Adolescent ; Adult ; Aged ; Blood Pressure ; Chicago/epidemiology ; Female ; Humans ; Hypertension/diagnosis ; Hypertension/epidemiology ; Hypertension/physiopathology ; Longitudinal Studies ; Male ; Middle Aged ; Risk Assessment ; Risk Factors ; Social Determinants of Health/trends ; Time Factors ; Violence/trends ; Young Adult
    Language English
    Publishing date 2019-08-07
    Publishing country United States
    Document type Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 639383-4
    ISSN 1941-7225 ; 1879-1905 ; 0895-7061
    ISSN (online) 1941-7225 ; 1879-1905
    ISSN 0895-7061
    DOI 10.1093/ajh/hpz134
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Tumor necrosis factor-α levels and non-surgical bleeding in continuous-flow left ventricular assist devices.

    Tabit, Corey E / Coplan, Mitchell J / Chen, Phetcharat / Jeevanandam, Valluvan / Uriel, Nir / Liao, James K

    The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation

    2017  Volume 37, Issue 1, Page(s) 107–115

    Abstract: Background: Non-surgical bleeding (NSB) due to angiodysplasia is common in left ventricular assist device (LVAD) patients. Thrombin-induced angiopoietin-2 (Ang-2) expression in LVAD patients leads to altered angiogenesis and is associated with lower ... ...

    Abstract Background: Non-surgical bleeding (NSB) due to angiodysplasia is common in left ventricular assist device (LVAD) patients. Thrombin-induced angiopoietin-2 (Ang-2) expression in LVAD patients leads to altered angiogenesis and is associated with lower angiopoietin-1 (Ang-1) and increased NSB. However, the mechanism for decreased Ang-1, made by pericytes, is unknown and the origin of thrombin in LVAD patients is unclear. We hypothesized that high tumor necrosis factor-α (TNF-α) levels in LVAD patients induce pericyte apoptosis, tissue factor (TF) expression and vascular instability.
    Methods: We incubated cultured pericytes with serum from patients with heart failure (HF), LVAD or orthotopic heart transplantation (OHT), with or without TNF-α blockade. We performed several measurements: Ang-1 expression was assessed by reverse transcript-polymerase chain reaction (RT-PCR) and pericyte death fluorescently; TF expression was assessed by RT-PCR in cultured endothelial cells incubated with patient plasma with or without TNF-α blockade; and TF expression was assessed in endothelial biopsy samples from these patients by immunofluorescence. We incubated cultured endothelial cells on Matrigel with patient serum with or without TNF-α blockade and determined tube formation by microscopy.
    Results: Serum from LVAD patients had higher levels of TNF-α, suppressed Ang-1 expression in pericytes, and induced pericyte death, and there was accelerated endothelial tube formation compared with serum from patients without LVADs. TF was higher in both plasma and endothelial cells from LVAD patients, and plasma from LVAD patients induced more endothelial TF expression. All of these effects were reversed or reduced with TNF-α blockade. High levels of TNF-α were associated with increased risk of NSB.
    Conclusions: Elevated TNF-α in LVAD patients is a central regulator of altered angiogenesis, pericyte apoptosis and expression of TF and Ang-1.
    MeSH term(s) Aged ; Female ; Heart-Assist Devices/adverse effects ; Hemorrhage/blood ; Hemorrhage/etiology ; Humans ; Male ; Middle Aged ; Postoperative Complications/blood ; Postoperative Complications/etiology ; Tumor Necrosis Factor-alpha/blood
    Chemical Substances Tumor Necrosis Factor-alpha
    Language English
    Publishing date 2017-06-08
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1062522-7
    ISSN 1557-3117 ; 1053-2498
    ISSN (online) 1557-3117
    ISSN 1053-2498
    DOI 10.1016/j.healun.2017.06.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Community Health Workers Reduce Rehospitalizations and Emergency Department Visits for Low-Socioeconomic Urban Patients With Heart Failure.

    Vohra, Adam S / Chua, Rhys F M / Besser, Stephanie A / Alcain, Charina F / Basnet, Sweta / Battle, Brenda / Coplan, Mitchell J / Liao, James K / Tabit, Corey E

    Critical pathways in cardiology

    2020  Volume 19, Issue 3, Page(s) 139–145

    Abstract: Background: Low-socioeconomic, urban, minority patients with heart failure (HF) often have unique barriers to care. Community health workers (CHWs) are specially trained laypeople who serve as liaisons between underserved communities and the health ... ...

    Abstract Background: Low-socioeconomic, urban, minority patients with heart failure (HF) often have unique barriers to care. Community health workers (CHWs) are specially trained laypeople who serve as liaisons between underserved communities and the health system. It is not known whether CHWs improve outcomes in low-socioeconomic, urban, minority patients with HF.
    Hypothesis: CHWs reduce rehospitalizations, emergency department (ED) visits, and healthcare costs for low-socioeconomic urban patients with HF.
    Methods: Patients admitted with acute decompensated HF were assigned to receive weekly visits by CHW after discharge. Patients were propensity score matched with controls who received usual care. HF-related rehospitalizations, ED visits, and inpatient costs were compared for 12 months following index admission versus the same period before.
    Results: Twenty-eight patients who received weekly visits from a CHW for 12 months after discharge were matched with 28 control patients who did not receive CHWs. Patients who received a CHW had a 75% decrease in HF-related ED visits (0.71 vs. 0.18 visits per patient, P < 0.001), an 89% decrease in HF-related readmissions (0.64 vs. 0.07 admissions per patient, P < 0.005), and a significant decrease in inpatient cost for HF-related visits. In controls receiving usual care, there was no significant change in hospitalizations, ED visits, or costs.
    Conclusions: In conclusion, CHWs are associated with reduced rehospitalizations, ED visits, and inpatient costs in low-socioeconomic, urban, minority patients with HF. CHWs may be a cost-effective method to reduce health care utilization and improve outcomes for this population.
    MeSH term(s) Adult ; Aged ; Community Health Workers/statistics & numerical data ; Emergency Service, Hospital/statistics & numerical data ; Female ; Heart Failure/economics ; Heart Failure/epidemiology ; Heart Failure/therapy ; Humans ; Illinois/epidemiology ; Incidence ; Male ; Middle Aged ; Office Visits/trends ; Patient Readmission/trends ; Retrospective Studies ; Socioeconomic Factors ; Urban Population
    Language English
    Publishing date 2020-03-24
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2079676-6
    ISSN 1535-2811 ; 1535-282X
    ISSN (online) 1535-2811
    ISSN 1535-282X
    DOI 10.1097/HPC.0000000000000220
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Positional obstruction of the superior mesenteric artery by an intra-aortic balloon pump placed through subclavian artery approach.

    Tabit, Corey E / Onsager, David R / Kim, Gene H / Jeevanandam, Valluvan / Fedson, Savitri E

    Circulation. Heart failure

    2014  Volume 7, Issue 5, Page(s) 864–867

    MeSH term(s) Arterial Occlusive Diseases/diagnosis ; Arterial Occlusive Diseases/etiology ; Catheterization, Peripheral/adverse effects ; Catheterization, Peripheral/methods ; Diagnosis, Differential ; Heart Failure/therapy ; Humans ; Intra-Aortic Balloon Pumping/adverse effects ; Intra-Aortic Balloon Pumping/instrumentation ; Male ; Mesenteric Artery, Superior ; Middle Aged ; Patient Positioning/adverse effects ; Posture ; Radiography, Abdominal ; Subclavian Artery ; Tomography, X-Ray Computed ; Ultrasonography, Doppler
    Language English
    Publishing date 2014-09
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 2429459-7
    ISSN 1941-3297 ; 1941-3289
    ISSN (online) 1941-3297
    ISSN 1941-3289
    DOI 10.1161/CIRCHEARTFAILURE.114.001463
    Database MEDical Literature Analysis and Retrieval System OnLINE

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