Annals of medicine and surgery (2012) · 2025
Neuroprotection in aortic arch surgery: a meta-analysis of hypothermia and selective cerebral perfusion on perioperative stroke and cognitive outcomes.
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Patel Tirath, Farhan Muhammad, Daneshpazhouh Maral, Seyfi Ariana, Al Hawari Alaa Musa, Nahar Odai Al, Alkassar Abdulrhman, Alazzavi Mazin, Al Ogaidi Yousif, Nazir Muhammad Hashir
Аннотация
BACKGROUND: Hypothermic circulatory arrest is an essential aspect of aortic arch surgery and is classically used in severe hypothermia (≤20 °C) to reduce cerebral metabolic demand. However, severe hypothermia is associated with systemic problems. Recently, moderate hypothermia (20-28 °C) combined with selective cerebral perfusion (SCP) has been proposed as an option, which may reduce the risk of adverse neurological consequences. This study aims to see whether this newer approach confers any neuroprotective benefits.
METHODS: A comprehensive literature search was conducted on PubMed, Embase, Cochrane Library, Web of Science, and Scopus for English-language studies published in the last 20 years. Eligible studies comparing deep hypothermia with moderate hypothermia with SCP in adult patients after aortic arch surgery, with a focus on the incidence of perioperative stroke and neurocognitive outcomes. Data collection and quality assessment were performed using the Cochrane Risk of Bias Tool for Randomized Clinical Trials and the Newcastle-Ottawa Scale for observational studies. A meta-analysis of randomized clinical trials was performed using RevMan software.
RESULTS: Six studies (four randomized controlled trials and two observational studies) met the inclusion criteria. Pooled analysis indicated that deep hypothermia was associated with a significantly increased risk of perioperative stroke compared with moderate hypothermia (relative risk, 1.74; 95% confidence interval, 1.30-2.35), but heteogeneity (I 2 = 0%). The funnel plot revealed a sand-synthesized model with minimal publication bias.
CONCLUSION: Moderate hypothermia with SCP provides better neuroprotection than deep hypothermia in aortic arch surgery, which significantly reduces the incidence of perioperative stroke. Further in-depth studies are needed to validate these findings.
METHODS: A comprehensive literature search was conducted on PubMed, Embase, Cochrane Library, Web of Science, and Scopus for English-language studies published in the last 20 years. Eligible studies comparing deep hypothermia with moderate hypothermia with SCP in adult patients after aortic arch surgery, with a focus on the incidence of perioperative stroke and neurocognitive outcomes. Data collection and quality assessment were performed using the Cochrane Risk of Bias Tool for Randomized Clinical Trials and the Newcastle-Ottawa Scale for observational studies. A meta-analysis of randomized clinical trials was performed using RevMan software.
RESULTS: Six studies (four randomized controlled trials and two observational studies) met the inclusion criteria. Pooled analysis indicated that deep hypothermia was associated with a significantly increased risk of perioperative stroke compared with moderate hypothermia (relative risk, 1.74; 95% confidence interval, 1.30-2.35), but heteogeneity (I 2 = 0%). The funnel plot revealed a sand-synthesized model with minimal publication bias.
CONCLUSION: Moderate hypothermia with SCP provides better neuroprotection than deep hypothermia in aortic arch surgery, which significantly reduces the incidence of perioperative stroke. Further in-depth studies are needed to validate these findings.