Key result
Coronary artery bypass grafting surgery was associated with significantly reduced regional cerebral blood flow during memory processing in the medial temporal lobe (P=0.023) and prefrontal cortex (P=0.002).
Why the study?
Does elective coronary artery bypass grafting surgery alter regional cerebral blood flow during memory processing?
Observational
Does elective coronary artery bypass grafting surgery alter regional cerebral blood flow during memory processing?
p-value: p=0.023 and 0.002
CABG surgery is associated with postoperative attenuation of regional cerebral blood flow in brain areas involved in memory processing, which may relate to postoperative memory impairment.
May indicate perioperative memory network vulnerability after CABG; hypothesis-generating and requires prospective confirmation before clinical relevance.
Reports of memory impairment after cardiac surgery are controversial. To address this controversy, we used positron emission tomography to examine changes in regional cerebral blood flow (rCBF) during memory processing before and after elective coronary artery bypass grafting surgery. In postoperative scans, we observed significantly reduced rCBF in 2 of the most important memory processing areas: the medial temporal lobe (P = 0.023) and the prefrontal cortex (P = 0.002). The results suggest postoperative attenuation of rCBF in brain areas involved in memory processing. These reductions could be used to evaluate severity of memory impairment after coronary artery bypass grafting surgery in patients at risk.
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Badgaiyan et al. (2014) conducted an observational in Coronary artery bypass grafting surgery. Coronary artery bypass grafting surgery vs. Preoperative baseline was evaluated on Changes in regional cerebral blood flow (rCBF) during memory processing (p=0.023 and 0.002). Coronary artery bypass grafting surgery was associated with significantly reduced regional cerebral blood flow during memory processing in the medial temporal lobe (P=0.023) and prefrontal cortex (P=0.002).
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