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  1. Article ; Online: Detection of Intraneural Median Nerve Microvascularity Using Contrast-Enhanced Sonography: A Pilot Study.

    Volz, Kevin R / Evans, Kevin D / Kanner, Christopher D / Dickerson, Jennifer A

    Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine

    2016  Volume 35, Issue 6, Page(s) 1309–1316

    Abstract: Objectives: Demonstrating vascularity within the human median nerve may be difficult using power Doppler sonography. To this end, a pilot study documenting contrast-enhanced vascularity of the median nerve was conducted.: Methods: Patients undergoing ...

    Abstract Objectives: Demonstrating vascularity within the human median nerve may be difficult using power Doppler sonography. To this end, a pilot study documenting contrast-enhanced vascularity of the median nerve was conducted.
    Methods: Patients undergoing contrast-enhanced transthoracic echocardiography were recruited for this study (n = 24). During echocardiography, a simultaneous contrast-enhanced sonographic examination of the median nerve was conducted. The study and study protocol were built from preclinical evidence. Image analysis was based on the power Doppler pixel intensity within a defined region of interest to obtain quantitative data representing the average pixel intensity, maximum pixel intensity, and power Doppler pixel dot count. Semiquantitative data representing the power Doppler dot count grading were also obtained.
    Results: Spearman correlations between analytical methods showed strong positive, statistically significant (P< .05) correlations between the average pixel intensity and maximum pixel intensity and between the power Doppler dot count and dot count grading. Statistically significant increases in the average pixel intensity and power Doppler dot count were seen at all but 1 time point throughout the contrast-enhanced sonographic examination when compared to precontrast administration. Statistically significant increases in the maximum pixel intensity were seen at all but 4 time points.
    Conclusions: These pilot results represent early evidence that contrast-enhanced sonography can be used to image median nerve vascularity. In this convenience sample, median nerve contrast-enhanced sonographic data collection was feasible, safe, and consistent.
    MeSH term(s) Adult ; Aged ; Contrast Media ; Female ; Humans ; Image Enhancement/methods ; Male ; Median Nerve/blood supply ; Median Nerve/diagnostic imaging ; Microvessels/diagnostic imaging ; Middle Aged ; Pilot Projects ; Ultrasonography, Doppler/methods
    Chemical Substances Contrast Media
    Language English
    Publishing date 2016-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 604829-8
    ISSN 1550-9613 ; 0278-4297
    ISSN (online) 1550-9613
    ISSN 0278-4297
    DOI 10.7863/ultra.15.07012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Comparison of the Safety of Adenosine and Regadenoson in Patients Undergoing Outpatient Cardiac Stress Testing.

    Brink, Heidi L / Dickerson, Jennifer A / Stephens, Julie A / Pickworth, Kerry K

    Pharmacotherapy

    2015  Volume 35, Issue 12, Page(s) 1117–1123

    Abstract: Study objective: To compare the adverse effect profiles of adenosine and regadenoson in patients undergoing outpatient cardiac stress testing.: Design: Single-center retrospective cohort study.: Setting: Two outpatient clinics, both of which are ... ...

    Abstract Study objective: To compare the adverse effect profiles of adenosine and regadenoson in patients undergoing outpatient cardiac stress testing.
    Design: Single-center retrospective cohort study.
    Setting: Two outpatient clinics, both of which are part of a single tertiary academic medical health system; one clinic exclusively used adenosine for cardiac stress testing, and the other clinic exclusively used regadenoson.
    Patients: A total of 489 patients who underwent an outpatient cardiac stress test between January 1, 2014, and December 31, 2014; of those patients, 254 received adenosine and 235 received regadenoson.
    Measurements and main results: Baseline characteristics were similar between groups, except for chronic kidney disease (p<0.001), congestive heart failure (p=0.041), and mean age (p=0.004). The primary outcome was the occurrence of adverse effects-arrhythmia, chest pain or tightness, dizziness, dyspnea, flushing, or headache, and use of the rescue agent aminophylline-in the adenosine and regadenoson groups. A significantly higher proportion of patients who were given regadenoson during cardiac stress testing experienced at least one adverse effect compared with patients who underwent an adenosine stress test (79.6% vs 31.5%, p<0.001). The patients given regadenoson experienced a significantly higher occurrence of arrhythmia (30.6% vs 16.1%, p<0.001), dyspnea (66.0% vs 17.7%, p<0.001), and headache (25.1% vs 3.1%, p<0.001), and they had a significantly higher rate of aminophylline rescue use (19.2% vs 0.8%, p<0.001). A secondary objective evaluated the financial impact of each agent, and adenosine exhibited a medication price that was more than $100/patient lower than regadenoson based on the average wholesale price.
    Conclusion: Among patients undergoing an outpatient pharmacologic stress test, the use of adenosine was associated with a lower occurrence of adverse effects and lower rate of a rescue agent use and may provide a potential medication cost savings opportunity compared with regadenoson.
    MeSH term(s) Adenosine/administration & dosage ; Adenosine/adverse effects ; Adenosine/pharmacology ; Cohort Studies ; Exercise Test ; Female ; Heart Rate/drug effects ; Humans ; Male ; Middle Aged ; Purines/administration & dosage ; Purines/adverse effects ; Purines/pharmacology ; Pyrazoles/administration & dosage ; Pyrazoles/adverse effects ; Pyrazoles/pharmacology ; Retrospective Studies
    Chemical Substances Purines ; Pyrazoles ; regadenoson (2XLN4Y044H) ; Adenosine (K72T3FS567)
    Language English
    Publishing date 2015-12
    Publishing country United States
    Document type Comparative Study ; Journal Article
    ZDB-ID 603158-4
    ISSN 1875-9114 ; 0277-0008
    ISSN (online) 1875-9114
    ISSN 0277-0008
    DOI 10.1002/phar.1669
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Gender-related differences in coronary artery dimensions: a volumetric analysis.

    Dickerson, Jennifer A / Nagaraja, Haikady N / Raman, Subha V

    Clinical cardiology

    2011  Volume 33, Issue 2, Page(s) E44–9

    Abstract: Background: Women consistently have poorer revascularization outcomes and more coronary vascular complications compared to men. This has been attributed to smaller coronary arteries, though limited data exist to support this assumption.: Hypothesis: ... ...

    Abstract Background: Women consistently have poorer revascularization outcomes and more coronary vascular complications compared to men. This has been attributed to smaller coronary arteries, though limited data exist to support this assumption.
    Hypothesis: By using volumetric data obtained from multidetector cardiovascular computed tomography (CCT), we sought to determine to what extent gender influences coronary artery dimensions and test the hypothesis that women would have smaller coronary dimensions even after normalizing for body surface area and cardiac mass.
    Methods: CCT examinations completed on a 64-slice scanner were identified from a university cardiovascular database. Data sets from 50 women and 44 men without coronary artery disease were selected for analysis. Cross-sectional areas of proximal and distal segments of the left anterior descending (LAD), circumflex (LCx), and right coronary artery (RCA) were measured, blinded to patient gender. Measurements were compared using 2-sample t tests and linear regression analysis techniques accounting for body surface area (BSA) and left ventricular (LV) mass.
    Results: Analysis of cross-sectional coronary artery areas, unadjusted for BSA and LV mass showed smaller coronary artery size in women compared to men in the proximal portion of both the LAD (P = .01) and RCA (P = .002), but no significant difference in the remaining coronary segments.
    Conclusion: Gender significantly impacts proximal LAD and RCA size. Differences in coronary artery dimensions may explain some, but not all excess gender-related risk with coronary artery revascularization, underscoring the importance of considering multiple contributing factors.
    MeSH term(s) Adult ; Body Surface Area ; Cardiovascular Diseases/diagnostic imaging ; Coronary Angiography/methods ; Coronary Vessels/pathology ; Female ; Heart Ventricles/pathology ; Humans ; Linear Models ; Male ; Middle Aged ; Predictive Value of Tests ; Sex Factors ; Tomography, X-Ray Computed
    Language English
    Publishing date 2011-06-24
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 391935-3
    ISSN 1932-8737 ; 0160-9289
    ISSN (online) 1932-8737
    ISSN 0160-9289
    DOI 10.1002/clc.20509
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Relationship of cardiac magnetic resonance imaging and myocardial biopsy in the evaluation of nonischemic cardiomyopathy.

    Dickerson, Jennifer A / Raman, Subha V / Baker, Peter M / Leier, Carl V

    Congestive heart failure (Greenwich, Conn.)

    2013  Volume 19, Issue 1, Page(s) 29–38

    Abstract: This study was performed to determine the relative role of cardiac magnetic resonance (CMR) imaging and endomyocardial biopsy (EMB) in the evaluation of cardiomyopathy. Sixty-six patients with a clinical diagnosis of nonischemic dilated cardiomyopathy or ...

    Abstract This study was performed to determine the relative role of cardiac magnetic resonance (CMR) imaging and endomyocardial biopsy (EMB) in the evaluation of cardiomyopathy. Sixty-six patients with a clinical diagnosis of nonischemic dilated cardiomyopathy or restrictive cardiomyopathy underwent both EMB and CMR imaging as part of their diagnostic evaluation. The authors retrospectively reviewed the results of these two methods to determine their diagnostic impact and congruency. CMR imaging provided data on cardiac anatomy, left ventricular volumes, mass, and function in 85% of the patients, uncovered fibrosis in 31%, myocardial ischemia in 7%, and fibrofatty infiltration in two patients. EMB provided the histologic findings of cardiomyocyte hypertrophy in 77% of patients and substantial interstitial fibrosis in 59%. Six patients had EMB-proven amyloid heart disease, which was detected by CMR imaging in two. CMR imaging showed patterns of late gadolinium enhancement supportive of infiltrative disease or inflammation in 6 patients with EMB-proven definite (n=3) or borderline (n=3) myocarditis, but failed to do so in two other patients with borderline and two with resolving myocarditis. At the present time, CMR imaging and EMB remain complementary procedures in the evaluation of cardiomyopathic conditions.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biopsy/methods ; Cardiac Catheterization ; Cardiomyopathies/diagnosis ; Female ; Follow-Up Studies ; Humans ; Image Enhancement ; Magnetic Resonance Imaging, Cine/methods ; Male ; Middle Aged ; Myocardium/pathology ; Reproducibility of Results ; Retrospective Studies ; Young Adult
    Language English
    Publishing date 2013-01
    Publishing country United States
    Document type Comparative Study ; Journal Article
    ZDB-ID 1239105-0
    ISSN 1751-7133 ; 1527-5299 ; 1079-7998
    ISSN (online) 1751-7133
    ISSN 1527-5299 ; 1079-7998
    DOI 10.1111/chf.12003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Factors Determining Left Main Coronary Artery Luminal Area.

    Boudoulas, Konstantinos Dean / Bittenbender, Peter M / Nagaraja, Haikady N / Kahaly, Omar / Dickerson, Jennifer A / Raman, Subha V / Mazzaferri, Ernest L / Bush, Charles A

    The Journal of invasive cardiology

    2017  Volume 29, Issue 7, Page(s) 246–249

    Abstract: Background: A certain minimal luminal cross-sectional area has been traditionally used in clinical practice as a cut-off value to determine severity of left main coronary artery (LMCA) stenosis. The severity of stenosis, however, depends on the baseline ...

    Abstract Background: A certain minimal luminal cross-sectional area has been traditionally used in clinical practice as a cut-off value to determine severity of left main coronary artery (LMCA) stenosis. The severity of stenosis, however, depends on the baseline luminal area (ie, area prior to stenosis), which may vary among individuals. The present study was undertaken to define normal LMCA luminal area using current technology in vivo.
    Methods: LMCA luminal area was determined using multislice computed tomography coronary angiography. Eighty-six subjects with normal coronary arteries and calcium score of zero were included in this study. Left ventricular (LV) mass and LV volumes (systolic, diastolic) were also measured.
    Results: A wide distribution was found in LMCA luminal area, with median value 17.3 mm² and range 8.1-33.9 mm². A relationship was found between log(LMCA luminal area) and log(LV mass) (r=.515; P<.001) and with body surface area (r=.273; P=.01). Significant relationships were also found between LMCA luminal area and LV volumes (systolic, diastolic). In multiple regression analysis, however, the LV mass was the only independent predictor of LMCA luminal area.
    Conclusion: LMCA luminal area varies substantially among individuals with normal coronary arteries and is related to many other factors. The data suggest that the current practice of using a minimal luminal area cut-off when assessing LMCA stenosis may be misleading, and thus available information should be individualized.
    Language English
    Publishing date 2017-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1154372-3
    ISSN 1557-2501 ; 1042-3931
    ISSN (online) 1557-2501
    ISSN 1042-3931
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: 1111 Combined use of real-time cine and first-pass perfusion with dobutamine stress

    Simonetti Orlando P / Dickerson Jennifer A / Raman Subha V

    Journal of Cardiovascular Magnetic Resonance, Vol 10, Iss Suppl 1, p A

    2008  Volume 236

    Keywords Diseases of the circulatory (Cardiovascular) system ; RC666-701 ; Specialties of internal medicine ; RC581-951 ; Internal medicine ; RC31-1245 ; Medicine ; R ; DOAJ:Cardiovascular ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Language English
    Publishing date 2008-10-01T00:00:00Z
    Publisher BioMed Central
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Myocardial ischemia in the absence of epicardial coronary artery disease in Friedreich's ataxia

    Dickerson Jennifer A / Raman Subha V / Al-Dahhak Roula

    Journal of Cardiovascular Magnetic Resonance, Vol 10, Iss 1, p

    2008  Volume 15

    Abstract: Abstract We present the first in vivo detection of microvascular abnormality in a patient with Friedreich's ataxia (FA) without epicardial coronary artery disease using cardiac magnetic resonance (CMR). The patient had exertional chest pain and dyspnea ... ...

    Abstract Abstract We present the first in vivo detection of microvascular abnormality in a patient with Friedreich's ataxia (FA) without epicardial coronary artery disease using cardiac magnetic resonance (CMR). The patient had exertional chest pain and dyspnea prompting referral for cardiac evaluation. These symptoms were reproduced during intravenous adenosine infusion, and simultaneous first-pass perfusion imaging showed a significant subendocardial defect; both symptoms and perfusion deficit were absent at rest. Epicardial coronaries were free of disease by invasive angiography; together, these findings support the notion of impaired myocardial perfusion reserve in FA.
    Keywords Diseases of the circulatory (Cardiovascular) system ; RC666-701 ; Specialties of internal medicine ; RC581-951 ; Internal medicine ; RC31-1245 ; Medicine ; R ; DOAJ:Cardiovascular ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Language English
    Publishing date 2008-04-01T00:00:00Z
    Publisher BioMed Central
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Myocardial ischemia in the absence of epicardial coronary artery disease in Friedreich's ataxia.

    Raman, Subha V / Dickerson, Jennifer A / Al-Dahhak, Roula

    Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance

    2008  Volume 10, Page(s) 15

    Abstract: We present the first in vivo detection of microvascular abnormality in a patient with Friedreich's ataxia (FA) without epicardial coronary artery disease using cardiac magnetic resonance (CMR). The patient had exertional chest pain and dyspnea prompting ... ...

    Abstract We present the first in vivo detection of microvascular abnormality in a patient with Friedreich's ataxia (FA) without epicardial coronary artery disease using cardiac magnetic resonance (CMR). The patient had exertional chest pain and dyspnea prompting referral for cardiac evaluation. These symptoms were reproduced during intravenous adenosine infusion, and simultaneous first-pass perfusion imaging showed a significant subendocardial defect; both symptoms and perfusion deficit were absent at rest. Epicardial coronaries were free of disease by invasive angiography; together, these findings support the notion of impaired myocardial perfusion reserve in FA.
    MeSH term(s) Adenosine/administration & dosage ; Adult ; Angina Pectoris/etiology ; Angina Pectoris/pathology ; Coronary Angiography ; Coronary Artery Disease/pathology ; Coronary Circulation ; Dyspnea/etiology ; Dyspnea/pathology ; Female ; Friedreich Ataxia/complications ; Friedreich Ataxia/pathology ; Friedreich Ataxia/physiopathology ; Humans ; Infusions, Intravenous ; Magnetic Resonance Imaging ; Microcirculation/pathology ; Microcirculation/physiopathology ; Myocardial Ischemia/etiology ; Myocardial Ischemia/pathology ; Myocardial Ischemia/physiopathology ; Pericardium/pathology ; Vasodilator Agents/administration & dosage
    Chemical Substances Vasodilator Agents ; Adenosine (K72T3FS567)
    Language English
    Publishing date 2008-04-08
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 1458034-2
    ISSN 1532-429X ; 1097-6647
    ISSN (online) 1532-429X
    ISSN 1097-6647
    DOI 10.1186/1532-429X-10-15
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Lipomatous hypertrophy of the intraatrial septum resulting in right atrial inflow obstruction and atrial flutter.

    Dickerson, Jennifer A / Smith, Macy / Kalbfleisch, Steven / Firstenberg, Michael S

    The Annals of thoracic surgery

    2010  Volume 89, Issue 5, Page(s) 1647–1649

    Abstract: Atrial arrhythmias can occasionally be associated with atrial structural abnormalities that may require sophisticated diagnostic imaging for management. Lipomatous hypertrophy of the intraatrial septum is generally considered a benign fatty infiltrative ... ...

    Abstract Atrial arrhythmias can occasionally be associated with atrial structural abnormalities that may require sophisticated diagnostic imaging for management. Lipomatous hypertrophy of the intraatrial septum is generally considered a benign fatty infiltrative process usually limited to the atrial septum. We present a rare case of lipomatous hypertrophy of the intraatrial septum associated with atrial flutter and right atrial inflow obstruction in which atrial reconstruction alleviated not only the obstruction but also helped control a challenging arrhythmia.
    MeSH term(s) Atrial Flutter/etiology ; Atrial Septum/diagnostic imaging ; Atrial Septum/pathology ; Atrial Septum/surgery ; Cardiac Surgical Procedures/methods ; Echocardiography, Transesophageal ; Female ; Follow-Up Studies ; Heart Atria/pathology ; Heart Neoplasms/complications ; Heart Neoplasms/pathology ; Heart Neoplasms/surgery ; Humans ; Hypertrophy/complications ; Hypertrophy/pathology ; Hypertrophy/surgery ; Lipoma/complications ; Lipoma/pathology ; Lipoma/surgery ; Magnetic Resonance Imaging ; Middle Aged ; Risk Assessment ; Treatment Outcome
    Language English
    Publishing date 2010-05
    Publishing country Netherlands
    Document type Case Reports ; Journal Article
    ZDB-ID 211007-6
    ISSN 1552-6259 ; 0003-4975
    ISSN (online) 1552-6259
    ISSN 0003-4975
    DOI 10.1016/j.athoracsur.2009.10.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: In-room treadmill exercise stress cardiac magnetic resonance in patients with suspected ischemic heart disease

    Simonetti Orlando P / Foster Eric L / Dickerson Jennifer A / Jekic Mihaela / Raman Subha V

    Journal of Cardiovascular Magnetic Resonance, Vol 11, Iss Suppl 1, p O

    2009  Volume 40

    Keywords Diseases of the circulatory (Cardiovascular) system ; RC666-701 ; Specialties of internal medicine ; RC581-951 ; Internal medicine ; RC31-1245 ; Medicine ; R ; DOAJ:Cardiovascular ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Language English
    Publishing date 2009-01-01T00:00:00Z
    Publisher BioMed Central
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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