[Retracted] How to Perfuse: Concepts of Cerebral Protection during Arch Replacement

Table 1

Calculated safe durations of HCA at different temperatures with regard to cerebral metabolic rate and by McCullough et al. [30].

Temperature (°C)/level of hypothermia	Cerebral metabolic rate (% of baseline)	Calculated safe duration of HCA (min)
37 (normothermia)	100	5
30 (moderate)	56 (52–60)	9 (8–10)
25 (deep)	37 (33–42)	14 (12–15)
20 (profound)	24 (21–29)	21 (17–24)
15 (profound)	16 (13–20)	31 (25–38)
10 (ultra profound)	11 (8–14)	45 (36–62)