• American heart journal · Sep 1994

    Retrograde coronary blood flow during cardiopulmonary resuscitation in swine: intracoronary Doppler evaluation.

    • K B Kern, R Hilwig, and G A Ewy.
    • Department of Medicine, University of Arizona, Tucson.
    • Am. Heart J. 1994 Sep 1;128(3):490-9.

    AbstractCardiopulmonary resuscitation-generated coronary perfusion pressure and intracoronary flow velocity was studied with high-fidelity pressure transducers and an intracoronary Doppler catheter in 11 swine undergoing closed-chest manual cardiopulmonary resuscitation. Retrograde coronary blood flow in the mid left anterior descending coronary artery was documented during the compression (systolic) phase of chest compression. Techniques to enhance coronary perfusion pressure gradients, such as increasing the chest compression rate or increasing the force of compression, did not improve antegrade coronary blood flow velocity. Even when the aortic minus right atrial pressure gradient was raised throughout the cardiac cycle of closed-chest manual cardiopulmonary resuscitation, antegrade coronary flow occurred only during the relaxation phase of chest compressions. This study indicates that coronary blood flow during ventricular fibrillation and closed-chest cardiopulmonary resuscitation occurs only during diastole or the release phase of chest compression and supports the use of diastolic coronary perfusion pressure as a reflection of myocardial blood flow during closed-chest manual cardiopulmonary resuscitation.

      Pubmed     Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…