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  1. Article: Effect of radial artery harvest on collateral forearm blood flow and digital perfusion.

    Brodman, Richard F / Hirsh, Laurie E / Frame, Rosemary

    The Journal of thoracic and cardiovascular surgery

    2002  Volume 123, Issue 3, Page(s) 512–516

    Abstract: Background: Changes describing digital and forearm circulation after radial artery harvest have been reported infrequently.: Methods: This prospective study examined digital perfusion and forearm collateral circulation preoperatively and ... ...

    Abstract Background: Changes describing digital and forearm circulation after radial artery harvest have been reported infrequently.
    Methods: This prospective study examined digital perfusion and forearm collateral circulation preoperatively and postoperatively in patients who underwent coronary artery bypass grafting with radial artery free grafts. Noninvasive evaluation was conducted with digital photoelectric plethysmography and color flow and pulsed Doppler studies.
    Results: Thumb perfusion index decreased from 1.25 to 0.84 (30%, P <.001) in the unoperated extremities and from 1.23 to 0.80 (36%) in the operated extremities (P <.001). Doppler studies in extremities after radial artery harvest demonstrated an increase in ulnar artery diameter from 3.87 to 4.66 mm (15.7%, P <.001) and a rise in ulnar blood flow velocity from 38.96 to 48.46 cm/s (17.4%) preoperatively to 8 weeks postoperatively (P <.001). No hand ischemia was noted.
    Conclusions: Our study identified a mild reduction in digital perfusion and an increase in ulnar artery flow velocity and diameter with no clinical sequelae or compromise in hand function after radial artery harvest in properly selected patients.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Collateral Circulation ; Coronary Artery Bypass ; Female ; Fingers/blood supply ; Forearm/blood supply ; Hemodynamics ; Humans ; Infant ; Male ; Middle Aged ; Prospective Studies ; Radial Artery/transplantation ; Regional Blood Flow ; Specimen Handling ; Ulnar Artery/diagnostic imaging ; Ulnar Artery/physiology ; Ultrasonography, Doppler, Pulsed
    Language English
    Publishing date 2002-01-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3104-5
    ISSN 1097-685X ; 0022-5223
    ISSN (online) 1097-685X
    ISSN 0022-5223
    DOI 10.1067/mtc.2002.119885
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Dynamic MR angiography of upper extremity vascular disease: pictorial review.

    Stepansky, Flora / Hecht, Elizabeth M / Rivera, Rafael / Hirsh, Laurie E / Taouli, Bachir / Kaur, Manmeen / Lee, Vivian S

    Radiographics : a review publication of the Radiological Society of North America, Inc

    2008  Volume 28, Issue 1, Page(s) e28

    Abstract: Unlike peripheral lower extremity vascular disease, upper extremity vascular disease is relatively uncommon. While atherosclerosis and embolic disease are the most common causes of upper extremity ischemia, a wide variety of systemic diseases and ... ...

    Abstract Unlike peripheral lower extremity vascular disease, upper extremity vascular disease is relatively uncommon. While atherosclerosis and embolic disease are the most common causes of upper extremity ischemia, a wide variety of systemic diseases and anatomic abnormalities can affect the upper extremity. Upper extremity ischemia poses a significant diagnostic and therapeutic challenge for both clinicians and radiologists. Although history and physical examination remain the mainstays of diagnosis, imaging can be vital in confirming suspected disease and guiding treatment planning. Digital subtraction angiography is often the preferred method for detection of upper extremity vascular disease, particularly for characterization of complex arteriovenous anatomy such as in vascular malformations and for evaluation of dialysis fistulas and grafts. However, this modality is invasive, requires iodinated contrast agents and radiation, and may fail to demonstrate significant extraluminal disease. More recently, magnetic resonance (MR) angiography techniques have made important advances, permitting higher temporal and spatial resolution that is preferable for diagnosing upper extremity vascular disorders. In this review, the authors present an overview of upper extremity MR angiography techniques and protocols, revisit the often variable vascular anatomy of the arm and hand, and offer examples of various pathologic entities diagnosed with MR angiography. Finally, several imaging pitfalls that one must be aware of for accurate diagnosis are illustrated and reviewed.
    MeSH term(s) Humans ; Image Enhancement/methods ; Ischemia/diagnosis ; Magnetic Resonance Angiography/methods ; Peripheral Vascular Diseases/diagnosis ; Practice Guidelines as Topic ; Practice Patterns, Physicians' ; Upper Extremity/blood supply ; Upper Extremity/pathology
    Language English
    Publishing date 2008-01
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 603172-9
    ISSN 1527-1323 ; 0271-5333
    ISSN (online) 1527-1323
    ISSN 0271-5333
    DOI 10.1148/radiol.e28
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1751: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (1.OG)
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