ASCENDING AORTIC ANEURYSM: TECHNIQUE

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بسم الله الرحمن الرحيم.

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Presentation transcript:

ASCENDING AORTIC ANEURYSM: TECHNIQUE MARKO TURINA University Hospital Zurich, Switzerland

Tension at Coronary Ostia with Graft Inclusion Technique From Crawford: Diseases of the Aorta

GRAFT INCLUSION TECHNIQUE: SUBSTANTIAL SOURCE OF COMPLICATIONS From Crawford: Diseases of the Aorta

Perigraft hematoma after wrap technique

Spurious Aneurysm at the Origin of RCA After Graft Inclusion Technique in Composite Graft

Spurious Aneurysm of the Aortic Root After Composite Graft: Detachment of the Coronary Orifice

COMPOSITE GRAFT IN MARFAN’S DISEASE: False aneurysm at the origin of LMCA LA 35 year old male with Marfan, 9 y. after composite graft repair for acute Type A dissection False aneurysm True lumen BS 25 Aortic valve BS 25 RVOT Composite graft (compressed) Courtesy Prof.Jenni, Echocardiography USZ

FALSE ANEURYSM AT THE ORIGIN OF LMCA AFTER COMPOSITE GRAFT LA Leakage into the false aneurysm True lumen BS 25 Aortic valve Composite graft RVOT

Composite Graft with Open Technique

Composite Graft with Open Technique

Myocardial Protection in Ascending Aortic Surgery Zurich 2003 Systemic hypothermia 280C Begin with retrograde cardioplegia, cross-clamp and arrest with antegrade perfusion directly into coronaries (except in acute Type A). Continuos retrograde cold oxygenated blood @ 160C throughout procedure. Warm reperfusion (“hot shot”)

Etz C. D. et al.; Ann Thorac Surg 2007;84:1186-1194 Schematic drawing of mechanical (n = 126 patients; 61%) and biologic (n = 80 patients; 39%) valved composite grafts used for aortic root replacement using a modified Bentall technique Etz C. D. et al.; Ann Thorac Surg 2007;84:1186-1194 Copyright ©2007 The Society of Thoracic Surgeons

BUTTON TECHNIQUE FOR COMPOSITE GRAFT REPAIR

From Barbeau et al, Ann Thor Surg 1999

Axillary Artery Cannulation: Essential in Arch Procedures and Acute Type A

http://www.mpoullis.net/bscpb/cpb/blank.htm

Bavaria et al., Ann Thor Surg 2003

Hemiarch Bentall Procedure Subclavian/Innominate Artery Perfusion Technique Monitor left and right radial, and femoral artery pressure. Cannulation of subclavian/innominate artery. Cool patient to 280 C. Cross clamp innominate and left carotid, block left subclavian artery with balloon, perfuse upper body with 10 ml/kg, and administer antegrade and retrograde CPL. Perform distal anastomosis first, clamp the graft and resume body perfusion. Perfrom proximal part of the operation (valve and coronaries). Re-anastomose proximal and distal graft segment.

CABROL’S TECHNIQUE FOR DECOMPRESSION OF PERIGRAFT SPACE J Thorac Cardiovasc Surg 81:309-315, 1981

CABROL’S ORIGINAL DESCRIPTION OF CORONARY ANASTOMOSIS J Thorac Cardiovasc Surg 81:309-315, 1981

Modifications of Button Technique Pratali et al, Tex Heart Inst J 2000 Hilgenberg et al, Ann Thor Surg 1996

Completion Bentall procedure Malekan R. et al.; Ann Thorac Surg 2011;92:362-363 Copyright ©2011 The Society of Thoracic Surgeons

Two common errors in ascending aortic surgery: Timid resection of aneurysm (instead of going into arch) Use too long graft (they all lengthen and distend with time, some up to 20 – 30 % of diameter)

Keep you graft short, it expands and lengthens with time! Figure 7b. Bentall procedure in a 42-year-old man with a Stanford type A aortic dissection. (a) Preoperative reformatted CT image shows a thin intimal flap in the ascending aorta (arrow). (b) Postoperative reformatted CT image shows the composite graft and mechanical aortic valve used to replace the aortic root, as well as the reimplanted left coronary artery (arrow), which is attached to the composite graft. Ha H I et al. Radiographics 2007;27:989-1004 ©2007 by Radiological Society of North America

Potential Source of Recurrencies: Distal Anastomosis in Ascending Aorta (Instead in Arch)