외상후 스트레스장애 환자에 대한 P300의 임상적 적용

• 영문명: Clinical Application P300 of Patients with Post-Traumatic Stress Disorder
• 발행기관: 대한신경정신의학회
• 저자명: 김형주 오성희 이승환
• 간행물 정보: 『신경정신의학』제48권 제6호, 461~467쪽, 전체 7쪽
• 주제분류: 의약학 > 정신과학
• 파일형태: PDF
• 발행일자: 2009.11.30

영문 초록

Objectives Previous studies have suggested that information processing impairment is the main pathophysiology of post-traumatic stress disorder (PTSD). The P300 event-related potential (ERP) has been widely used, in diseases with cognitive dysfunction, such as schizophrenia and Alzheimer’s disease, for detecting abnormality in information processing. This study examined P300 characteristics of PTSD patients. Methods We recruited 23 patients (mean age 44.35) who met DSM-IV criteria for PTSD and matched 24 normal control (NC) subjects by age and education level. The NC group had no personal history of psychiatric or neurological abnormality. We conducted the Korean version of the structured interview for PTSD (K-SIPS) and Davidson trauma scale (DTS) with the PTSD patients. Then we measured P300 amplitude and latency on 3 electrodes (Cz, CPz, Pz) in both PTSD patients and the NC group. ResultsZZCompared with the NC, the P300 amplitudes of PTSD patients were lower on Cz (PTSD： NC=5.51±2.82 uV：11.80±5.18 uV, p<0.01), CPz (PTSD：NC=5.84±2.71 uV：12.69±4.51 uV, p<0.01) and Pz (PTSD：NC=5.01±2.60 uV：10.99±4.24 uV, p<0.01). We found increasing tendency toward P300 latency in PTSD group compared with NC. However, the BDI and DTS symptom severity scores were negatively correlated with the P300 amplitude of Pz. Conclusion There was a significant reduction of P300 amplitudes in PTSD patients. Compared to NC group, PTSD patients showed a reduced P300 amplitude significantly correlated with symptom severity. The present findings suggest PTSD patients experience cognitive dysfunction and ERP P300 can be a useful surrogate marker of symptom severity in PTSD patients.

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REFERENCES

키워드

Post-traumatic stress disorder ERP P300 Cognitive dysfunction