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Superiority of Using Bipolar Radiofrequency Energy for Internal Mammary Artery Harvesting  Thomas A. Vassiliades, MD, Ned Cosgriff, MD, Amy Denham, BSEE,

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Presentation on theme: "Superiority of Using Bipolar Radiofrequency Energy for Internal Mammary Artery Harvesting  Thomas A. Vassiliades, MD, Ned Cosgriff, MD, Amy Denham, BSEE,"— Presentation transcript:

1 Superiority of Using Bipolar Radiofrequency Energy for Internal Mammary Artery Harvesting 
Thomas A. Vassiliades, MD, Ned Cosgriff, MD, Amy Denham, BSEE, Jessica Olson, MSME, Donald H. Maul, DVM  The Annals of Thoracic Surgery  Volume 83, Issue 4, Pages (April 2007) DOI: /j.athoracsur Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

2 Fig 1 Burst pressure (mm Hg) of porcine internal mammary artery side branches (n = 163). Columns represent the mean ± standard error of the mean. (p < 0.05 compared with bipolar electrosurgery; *p < 0.01 compared with monopolar radiofrequency electrosurgery and ultrasonic electrosurgery; **p < compared with monopolar radiofrequency electrosurgery and ultrasonic coagulation.) ■ = monopolar; = bipolar; = ultrasonic; □ = clips. The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

3 Fig 2 The concentration-relaxation curves to adenosine triphosphate (ATP) of the rings that contracted to phenylephrine. (**p < 0.05 vs monopolar, clips, ultrasonic, control [denuded].) = monopolar radiofrequency (n = 23); = clips (n = 24); = bipolar radiofrequency (n = 19); = ultrasonic (n = 23); = control (intact) (n = 16); = control (denuded) (n = 8). The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

4 Fig 3 Representative scanning electron micrographs of porcine internal mammary artery harvested as (A) control (grade 0) and (B) monopolar radiofrequency (RF) electrosurgery (grade 3). The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

5 Fig 4 Distribution of standard error of the mean (SEM) grades for treatment groups (high, mean, low; control, intact = 0.0; control, denuded = 4.0). (BP = bipolar; CL = clips; MP = monopolar; US = ultrasonic.) The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

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