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Cerebral autoregulation after hypothermic circulatory arrest in operations on the aortic arch  Eugenio Neri, MD, Carlo Sassi, MD, Lucio Barabesi, DrPh,

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Presentation on theme: "Cerebral autoregulation after hypothermic circulatory arrest in operations on the aortic arch  Eugenio Neri, MD, Carlo Sassi, MD, Lucio Barabesi, DrPh,"— Presentation transcript:

1 Cerebral autoregulation after hypothermic circulatory arrest in operations on the aortic arch 
Eugenio Neri, MD, Carlo Sassi, MD, Lucio Barabesi, DrPh, Massimo Massetti, MD, Giorgio Pula, MD, Dimitrios Buklas, MD, Rossana Tassi, MD, Pierpaolo Giomarelli, MD  The Annals of Thoracic Surgery  Volume 77, Issue 1, Pages (January 2004) DOI: /S (03)

2 Fig 1 Autoregulation index (ARI) measurements of the three groups at the different time points of the study. Significant differences were found between preoperative and immediate postoperative time points (t0 vs t1): 5.0 ± 0.4 versus 2.4 ± 1.3; p < (paired-sample Student's t test). Significant differences were found also for each group: group 1 (white boxes; simple hypothermic circulatory arrest): 5.1 ± 0.4 versus 1.3 ± 0.6, p < ; group 2 (light gray boxes; patients operated on with antegrade cerebral perfusion): 5.0 ± 0.4 versus 4.0 ± 0.4, p < ; or group 3 (dark gray boxes; retrograde cerebral perfusion): 5.0 ± 0.5 versus 1.4 ± 0.3, p < Despite a dramatic recovery, the autoregulation index at the end of the study still differed significantly from the preoperative values, both in the overall population (5.0 ± 0.4 vs 3.7 ± 0.9; p < , paired-sample Student's t test) and in each group (group 1: 5.0 ± 0.4 vs 3.1 ± 0.7, p < ; group 2: 5.0 ± 0.4 vs 4.7 ± 0.3, p = 0.005; group 3: 5.0 ± 0.5 vs 3.1 ± 0.5, p < ). The Annals of Thoracic Surgery  , 72-79DOI: ( /S (03) )

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