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    Technical aspects of composite arterial T-grafts: Estimation of required conduit length by a simple formula

    Access Status
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    Authors
    Albert, A.
    Hassanein, W.
    Florath, Ines
    Voehringer, L.
    Abugameh, A.
    Ennker, J.
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Albert, A. and Hassanein, W. and Florath, I. and Voehringer, L. and Abugameh, A. and Ennker, J. 2008. Technical aspects of composite arterial T-grafts: Estimation of required conduit length by a simple formula. Thoracic and Cardiovascular Surgeon. 56 (8): pp. 461-466.
    Source Title
    Thoracic and Cardiovascular Surgeon
    DOI
    10.1055/s-2008-1038839
    ISSN
    0171-6425
    School
    Epidemiology and Biostatistics
    URI
    http://hdl.handle.net/20.500.11937/4059
    Collection
    • Curtin Research Publications
    Abstract

    Background: When composite arterial T-grafts are used, uncertainty persists as to whether the RIMA will be long enough to reach the RCA. We present a formula for the preoperative estimation of the required conduit length. Methods: The following formula was created to estimate the required conduit length for a sequential graft, starting from the proximal RIMA-LIMA T-graft anastomosis, passing the PLA, and ending at the PDA: 2.14 × ([2 × LV wall thickness [WT])+ end-diastolic diameter (EDD)]. The estimated length was compared to the measured length in 100 patients undergoing off-pump revascularisation with BIMA T-grafts. Results: There were no hospital deaths, no major infarctions and no wound complications. The required conduit length varied from 11.5 cm to 19 cm (average 14.9 ± 1.4 cm) and was excellently predicted by the formula (paired t-test: p < 0.001, r=0.86, average overestimation: 0.55 cm). Conclusion: The formula reliably determines the minimum required conduit length. We recommend this formula for preoperative decision making when considering the choice of graft and the length of RIMA harvesting. To facilitate calculation a simplified version is useful: 2 × EDD + 4 × WD + 1. Avoiding uncertainty about the sufficiency of the RIMA length may contribute to the spread of this technique. © Georg Thieme Verlag KG Stuttgart.

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