Application Of Heart Rate Variability Of Autonomic Nerve Function After Acute Spinal Cord Injury Evaluation Research

Objective Spinal cord injury (SCI) often leads to severe autonomic nervous system(ANS) dysfunction. C1-T5 SCI affect the heart control on the spinal cord and affect spinal sympathetic innervation to the heart.The sympathetic nerve of T6-T12 SCI had no significant effect on the heart.Heart rate variability(HRV)has been proven to be useful in the detection of ANS methods. This research use the change of HRV evaluation after acute SCI ANS, including injury after the stress state of the change of HRV.Designed to provide the basis for clinical research and clinical evaluation of ANS function.Methods Select spinal surgery and rehabilitation in guangxi medical university of SCI patients, conform to the standards of the 72 patients included in this study.According to spinal cord injury plane, it can be divided into C1-T5 group and T6-T12 group。C1-T5 group of 37 cases, of which the new hospital 12 cases,13 cases after the operation, rehabilitation after 12 cases;T6-T12 group of 35 cases, of which the new hospital 1 cases,13 cases after the operation, rehabilitation after 11 cases.According to the ASIA grade of damage, It can be divided into completely injury and incomplete injury group. Completely injury group of 31 cases,of which the new hospital 10 cases,12 cases after the operation, rehabilitation after 9 cases. Incomplete injury group of 41 cases, of which the new hospital 13 cases,14 cases after the operation, rehabilitation after 14 cases.Collected on admission (injured 3 to 7 days), (3 days) after surgery, postoperative rehabilitation (rehabilitation treatment 3 weeks) 24 hours dynamic electrocardiogram, analysis indicators of HF, LF and LF/HF, PNN50,rMSSD,SDANN.Result C1-T5 group compared with T6-T12 group at Hospitalized: LF/HF significantly reduced. High frequency index increased significantly. Group Complete lesion Compared with incomplete injury:HRV in both the high frequency part and low frequency part has a different degree reduced. Compared with the T6-T12 group and the C1-T5 group which has treated with rehabilitation therapy:LF/HF significantly reduced.Group Complete lesion Compared with incomplete injury:HRV in both the high frequency part and low frequency part has a different degree reduced.Compared with after operation and Hospitalized:The high frequency part of C1-T5 was significantly reduced. T6-T12 group except SDANN no statistical significance.LF/HF elevation.Other indicators of varying degrees of reduction.There was no significant difference in both the high frequency and low frequency parts between the complete injury group and the hospitalized group, incomplete injury group compared with on postoperative besides LF/HF value increases, the rest are reduced.Rehabilitation after treatment compared with on admission:Cl-T5 group had a significantly higher SDANN.T6-T12 without statistical significance,Completely damage without statistical significance,Group had a significantly higher SDANN incomplete lesions, others have no statistical significance.Conclusion acute SCI injury of the higher plane, vagus nerve tension is dominant, the more serious the damage degree, the more serious the autonomic nervous system damage; complete SCI acute stress mechanism may be suppressed;1 months after SCI injury, C1-T5 SCI patients has yet to reach the sympathetic vagus balance, C1-T5 SCI the T6-T12 SCI parasympathetic nerve more dominant; 1 months after SCI injury,completeness of SCI patients in about 1 month autonomic nerve functional recovery after injury is poorer, incomplete SCI patients with autonomic nerve to restore the completeness of SCI patients.