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Chinese Journal of Clinicians(Electronic Edition) ›› 2021, Vol. 15 ›› Issue (08): 610-614. doi: 10.3877/cma.j.issn.1674-0785.2021.08.010

• Clinical Research • Previous Articles     Next Articles

Effect of improved blood perfusion intervention on incidence of nervous system dysfunction and heart rate variability in Stanford type A aortic dissection patients undergoing cardiopulmonary bypass

Alusi Zhang1, Kehe Xia1, Lu Zhang1, Changyu Li1, Linnan Deng1, Wei Li1,()   

  1. 1. Department of Cardiovascular Surgery, Inner Mongolia Autonomous Region People's Hospital, Huhhot 010017, China
  • Received:2021-06-07 Online:2021-08-15 Published:2022-01-20
  • Contact: Wei Li

Abstract:

Objective

To explore the effect of improved blood perfusion intervention on the incidence of neurological dysfunction and heart rate variability (HRV) in patients with Stanford type A aortic dissection undergoing cardiopulmonary bypass.

Methods

A total of 84 patients with Stanford type A aortic dissection undergoing cardiopulmonary bypass at the Department of Cardiovascular Surgery of the Inner Mongolia Autonomous Region People's Hospital from May 2018 to June 2020 were selected as the research subjects. Using a random number table, the patients were divided into a control group (given unilateral antegrade cerebral perfusion treatment) and an observation group (given improved blood flow perfusion treatment), with each group having 42 cases. Intraoperative (time of extracorporeal circulation, surgery time, brain perfusion time, and assisted respiratory time) and postoperative indexes [time to awake, endotracheal intubation time, chest drainage volume, intensive care unit (ICU) stay time, and length of stay], HRV indexes [standard deviation of NN intervals (SDNN), standard deviation average of NN intervals (SDANN), square mean squared difference adjacent NN intervals (RMSSD), and proportion of NN50 divided by the total number of NN intervals (PNN50)], complications, and mortality at 30 days after operation were observed.

Results

The extracorporeal circulation time and operation time of the observation group were not significantly different from those of the control group (P>0.05), but the cerebral perfusion time, auxiliary breathing time, time to postoperative awake, tracheal intubation time, volume of thoracic drainage 48 h postoperatively, ICU stay time, and postoperative hospital stay of the observation group were significantly lower than those of the control group (P<0.05 for all). SDNN, SDANN, RMSSD, and PNN50 in the observation group were significantly higher than those of the control group (P<0.05 for all). The incidence of transient consciousness disorder, hypoxemia, hyperbilirubinemia, and anastomotic bleeding had no statistically significant differences between the two groups (P>0.05 for all), but the incidence of TND and PND in the observation group was significantly lower than that of the control group (P<0.05 for all). The mortality at 30 days after operation had no statistically significant difference between the two groups (P>0.05).

Conclusion

Improved blood perfusion intervention is effective in the treatment of Stanford type A aortic dissecting aneurysm, which can reduce HRV and the risk of neurological dysfunction.

Key words: Improved blood perfusion intervention, Cardiopulmonary bypass, Stanford type A, Aortic dissection, Heart rate variability

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