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THE JOURNAL OF CARDIOVASCULAR SURGERY
Rivista di Chirurgia Cardiaca, Vascolare e Toracica
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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AORTIC ARCH LESIONS AND DISSECTIONS
The Journal of Cardiovascular Surgery 2015 August;56(4):525-30
Acute type A aortic dissection repair with mild-to-moderate hypothermic circulatory arrest and selective cerebral perfusion
Numata S., Tsutsumi Y., Monta O., Yamazaki S., Seo H., Yoshida S., Samura T., Ohashi H. ✉
Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Fukui, Japan
AIM: The purpose of this study was to evaluate surgical results of aortic repair with antegrade selective cerebral perfusion (ASCP) and mild-to-moderate hypothermia (MH) from 28 to 31°C comparing with previous series with hypothermia from 20°C to 27 °C.
METHODS: Between 2000 and 2011, 109 consecutive patients underwent surgical repair for acute type A aortic dissection with circulatory arrest and ASCP and MH in our institution. Mean patient age was 67±11 years old. Total arch replacement was performed in 85 patients (78%). Thirty (27%) patients had shock status preoperatively. The patients were divided into two different subsets, which is group A (circulatory arrest at less than 27.9 °C, N.=70), and group B (at more than 28 °C, N.=39).
RESULTS: The mean extra-corporeal circulation time was 185±47 minutes in group A and 155±38 minutes in group B (P<0.001). The hospital mortality was 11.4% in group A and 10.3% in group B (P>0.05). Permanent neurological deficit occurred in 10 patients (14.3%) in group A, and in 5 (12.8%) in group B (P>0.05). Two (2.8%) paraplegia occurred in group A, and none in group B (P>0.05). The incidence of renal failure requiring hemodialysis was 17.1% in group A and 7.7% in group B, (P>0.05). Respiratory failure after surgery occurred in 27.1% of patients in group A, and 5.1% in group B (P=0.005).
CONCLUSION: Circulatory arrest at more than 28 °C offered sufficient cerebral and distal organ protection for acute type A aortic dissection.