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Malakh Shrestha
Hiroyuki Kamiya
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Christian Hagl
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J Thorac Cardiovasc Surg 2008;135:908-914
© 2008 The American Association for Thoracic Surgery


Surgery for Acquired Cardiovascular Disease

Hypothermic circulatory arrest with selective antegrade cerebral perfusion in ascending aortic and aortic arch surgery: A risk factor analysis for adverse outcome in 501 patients

Nawid Khaladj, MDa,*, Malakh Shrestha, MDa, Sara Meck, MDa, Sven Peterss, MDa, Hiroyuki Kamiya, MD, PhDa, Klaus Kallenbach, MDa, Michael Winterhalter, MDb, Ludwig Hoy, PhDc, Axel Haverich, MDa, Christian Hagl, MDa

a Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
b Department of Anesthesiology, Hannover Medical School, Hannover, Germany
c Department of Biometrics, Hannover Medical School, Hannover, Germany

Received for publication June 13, 2007; revisions received July 11, 2007; accepted for publication July 30, 2007.

* Address for reprints: Nawid Khaladj, MD, Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany. (Email: Khaladj.Nawid{at}mh-hannover.de).

Objective: This study was undertaken to identify preoperative and intraoperative risk factors influencing outcome after operations requiring hypothermic circulatory arrest with selective antegrade cerebral perfusion in a single center.

Methods: Between November 1999 and March 2006, a total of 501 consecutive patients (median age 64 years, range 20–86 years, 320 male) underwent aortic arch surgery with moderate hypothermic circulatory arrest (25°C ± 2°C) and additional selective antegrade cerebral perfusion (14°C) at our institution for various indications (256 aneurysms, 153 acute and 23 chronic type A aortic dissections, 66 other). Of these, 181 were emergency operations. Statistical analysis was carried out to determine risk factors for 30-day mortality as well as for temporary and permanent neurologic dysfunction.

Results: Overall mortality was 11.6%. Permanent neurologic dysfunction occurred in 48 patients (9.6%); temporary neurologic dysfunction was detected in 67 patients (13.4%). Multivariate analysis revealed age (P = .001, odds ratio 1.08), reoperation (P = .006, odds ratio 3.58), femoral arterial cannulation (P = .004, odds ratio 2.87), and cardiopulmonary bypass duration (P < .001, odds ratio 1.009) as risk factors for mortality. Permanent neurologic dysfunction was associated with preoperative renal insufficiency (P = .029, odds ratio 2.79) and operation time (P < .001, odds ratio 1.005), whereas temporary neurologic dysfunction occurred in patients with coronary artery disease (P = .04, odds ratio 2.29), emergency surgery (P = .001, odds ratio 4.09), and increasing hypothermic circulatory arrest duration (P = .01, odds ratio 1.015).

Conclusion: Moderate hypothermic circulatory arrest in combination with cold selective antegrade cerebral perfusion is an adequate tool for neuroprotection during aortic surgery. Nevertheless, the safety of this technique is limited for patients with long intraoperative durations, advanced age, and multiple comorbidities. This technique, which avoids profound core temperatures, has become an alternative to simple deep hypothermic circulatory arrest.



Abbreviations and Acronyms CPB = cardiopulmonary bypass; HCA = hypothermic circulatory arrest; PMD = permanent neurologic dysfunction; SACP = selective antegrade cerebral perfusion; TMD = temporary neurologic dysfunction





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