• Journal of Korean Neurosurgical Society
• /
• 제55권4호
• /
• pp.195-199
• /
• 2014

Objective : Age is a strong predictor of mortality in traumatic brain injuries. A surgical decision making is difficult especially for the elderly patients with severe head injuries. We studied so-called 'withholding a life-saving surgery' over a two year period at a university hospital. Methods : We collected data from 227 elderly patients. In 35 patients with Glasgow Coma Score 3--8, 28 patients had lesions that required operation. A life-saving surgery was withheld in 15 patients either by doctors and/or the families (Group A). Surgery was performed in 13 patients (Group B). We retrospectively examined the medical records and radiological findings of these 28 patients. We calculated the predicted probability of 6 month mortality (IPM) and 6 month unfavorable outcome (IPU) to compare the result of decision by the International Mission for Prognosis and Analysis of Clinical Trials in TBI (IMPACT) calculator. Results : Types of the mass lesion did not affect on the surgical decision making. None of the motor score 1 underwent surgery, while all patients with reactive pupils underwent surgery. Causes of injury or episodes of hypoxia/hypotension might have affected on the decision making, however, their role was not distinct. All patients in the group A died. In the group B, the outcome was unfavorable in 11 of 13 patients. Patients with high IPM or IPU were more common in group A than group B. Wrong decisions brought futile cares. Conclusion : Ethical training and developing decision-making skills are necessary including shared decision making.

• Journal of Korean Neurosurgical Society
• /
• 제64권6호
• /
• pp.957-965
• /
• 2021

Objective : Rapid increase in intracranial pressure (ICP) can result in hypertension, bradycardia and apnea, referred to as the Cushing phenomenon. During decompressive craniectomy (DC), rapid ICP decreases can cause changes in mean atrial blood pressure (mABP) and heart rate (HR), which may be an indicator of intact autoregulation and vasomotor reflex. Methods : A total of 82 patients who underwent DC due to traumatic brain injury (42 cases), hypertensive intracerebral hematoma (19 cases), or major infarction (21 cases) were included in this prospective study. Simultaneous ICP, mABP, and HR changes were monitored in one minute intervals during, prior to and 5-10 minutes following the DC. Results : After DC, the ICP decreased from 38.1±16.3 mmHg to 9.5±14.2 mmHg (p<0.001) and the mABP decreased from 86.4±14.5 mmHg to 72.5±11.4 mmHg (p<0.001). Conversly, overall HR was no significantly changed in HR, which was 100.1±19.7 rate/min prior to DC and 99.7±18.2 rate/min (p=0.848) after DC. Notably when the HR increased after DC, it correlated with a favorable outcome (p<0.001), however mortality was increased (p=0.032) when the HR decreased or remained unchanged. Conclusion : In this study, ICP was decreased in all patients after DC. Changes in HR were an indicator of preserved autoregulation and vasomotor reflex. The clinical outcome was improved in patients with increased HR after DC.

• Journal of Korean Neurosurgical Society
• /
• 제66권1호
• /
• pp.53-62
• /
• 2023

Objective : Deep learning is a machine learning approach based on artificial neural network training, and object detection algorithm using deep learning is used as the most powerful tool in image analysis. We analyzed and evaluated the diagnostic performance of a deep learning algorithm to identify skull fractures in plain radiographic images and investigated its clinical applicability. Methods : A total of 2026 plain radiographic images of the skull (fracture, 991; normal, 1035) were obtained from 741 patients. The RetinaNet architecture was used as a deep learning model. Precision, recall, and average precision were measured to evaluate the deep learning algorithm's diagnostic performance. Results : In ResNet-152, the average precision for intersection over union (IOU) 0.1, 0.3, and 0.5, were 0.7240, 0.6698, and 0.3687, respectively. When the intersection over union (IOU) and confidence threshold were 0.1, the precision was 0.7292, and the recall was 0.7650. When the IOU threshold was 0.1, and the confidence threshold was 0.6, the true and false rates were 82.9% and 17.1%, respectively. There were significant differences in the true/false and false-positive/false-negative ratios between the anterior-posterior, towne, and both lateral views (p=0.032 and p=0.003). Objects detected in false positives had vascular grooves and suture lines. In false negatives, the detection performance of the diastatic fractures, fractures crossing the suture line, and fractures around the vascular grooves and orbit was poor. Conclusion : The object detection algorithm applied with deep learning is expected to be a valuable tool in diagnosing skull fractures.

• Journal of Korean Neurosurgical Society
• /
• 제65권1호
• /
• pp.130-137
• /
• 2022

Objective : COVID-19 has spread worldwide since the first case was reported in Wuhan, China, in December 2019. Our institution is a regional trauma and emergency center in the northern Gyeonggi Province. The changing trend of patient care in the emergency room of this hospital likely reflects the overall trend of patients in the area. In the present study, whether changes in the surrounding social environment following the outbreak of COVID-19 changed the incidence of neurosurgical emergency patients and whether differences in practice existed were investigated. Methods : The overall trend was analyzed from January 2020 which is before the outbreak of COVID-19 to September 2020. To remove bias due to seasonal variation, the previous 2 year's records during the same period were reviewed and compared. Confirmed COVID-19 patients in the northern Gyeonggi Province were identified using data released by the government. And patients who came to the emergency department with head trauma and stroke were identified. Results : Based on the present study results, the total number of neurosurgery emergency patients decreased over the study period. In the trauma patient group, the number of patients not involved in traffic accidents significantly decreased compared with patients involved in traffic accidents. Among the stroke cases, the rate of ischemic stroke was lower than hemorrhagic stroke, although a statistically significant difference was not observed. Meanwhile, an increase in the risk of mortality associated with trauma or stroke cases was not observed during the COVID-19 outbreak compared with the same time period in the previous year. Conclusion : Due to the occurrence of COVID-19, non-essential activities have decreased and trauma cases not associated with traffic accidents appeared to decrease. Due to the decrease in overall activity, the number of stroke patients has also decreased. This trend is expected to continue even in the post-COVID-19 era, and accordingly, the results from the present study are relevant especially if the current situation continues.

• 정신신체의학
• /
• 제23권1호
• /
• pp.26-35
• /
• 2015

연구목적 본 연구는 Lees-Haley가 1992년 개발한 Postconcussional Syndrome Questionnaire(PCSQ)의 한글판(K-PCSQ)을 개발하고 신뢰도와 타당도를 평가하여 임상적 유용성을 밝히고자 시행되었다. 방 법 2009년 4월 1일부터 2011년 12월 31일까지 고려대학교 안산병원 외래에 내원한 외상성 뇌 손상 환자들 중 International Classification of Disease-10(ICD-10)의 뇌진탕후증후군, 기질성 정신질환(기질성 기분장애, 기질성 불안장애, 기질성 인격장애, 기질성 감정이변성장애)의 진단기준을 만족하는 환자들을 대상으로 포함하였다. 환자들을 대상으로 자가 보고형 평가 척도인 K-PCSQ, State and Trait Anxiety inventory(STAI-I. II), Center for Epidemiologic Studies Depression Scale(CESD)를 시행하였다. 수집된 자료로 PCSQ의 신뢰도와 타당도를 평가하였으며 요인분석을 시행하였다. 결 과 K-PCSQ의 Cronbach's alpha 값은 0.956, 검사-재검사 신뢰도는 0.836이었으며 STAI-I. II, CESD와 유의한 상관관계를 보였다. 요인 분석 결과 K-PCSQ는 4개의 요인구조를 보였으며, 제 1 요인은 '기분 및 인지 증상' 요인, 제 2 요인은 '신체 증상' 요인, 제 3 요인은 '드물게 나타나는 증상' 요인, 제 4 요인은 '과장 또는 부주의한 응답' 요인으로 나타났다. 뇌진탕후 증후군 환자와 기질성 정신질환 환자 두 군에서 K-PCSQ의 총점과 4가지 하위 요인의 점수를 비교하였을 때 두 군 간에 통계적으로 유의한 차이를 보이지 않았다. '과장 또는 부주의한 응답' 항목에 답변한 대상자들은 그렇지 않은 대상자에 비해 K-PCSQ의 총점과 4가지 하위 요인의 점수가 유의하게 높았다. 결 론 본 연구는 K-PCSQ가 두부외상으로 인한 정신의학적 증상을 평가하는데 있어서 유용한 도구임을 확인하였으며, 추후 보다 많은 환자를 대상으로 하는 연구를 통해 임상적인 유용성의 평가 이루어져야 할 것으로 생각된다.

• 대한물리치료과학회지
• /
• 제8권1호
• /
• pp.787-798
• /
• 2001

This study was performed to investigate the necessity and the features of adequate services of home visiting physical therapy for chronic ill patients. The study subjects were physical therapist visited in Taejon for Korea Physical Therapy Association Seminar on March 19, 2000. Authors developed questionnaire and distributed it to each physical therapist attended at the Seminar. The number of distributed questionnaire was 1,500, and 487 questionnaire were collected and 388 questionnaire analysed finally. 1. The rate of necessity for home visiting physical therapy by kinds of disease was 70.6% in cerebral palsy, 84.3% in spinal cord injury, 89.7% in cerebral vascular accident and traumatic brain injury, 20.1 % in other diseases. 2. The rate of necessity of education for home visiting physical therapy was 94.5% of men, 97.3% of women. 54.4% of answerer replied that the best education method was that developed clinical program. 3. In the general features of adequate service for home visiting physical therapy, 70.9% of men and 69.1 % of women want special isolated physical therapy center, 61.8% of men and 63.7% of women want distance of 15minutes-29minutes by car. 59.4% of men and 47.5% of women want 3 times per week in frequency(P<0.05), 70.9% of men and 61.0% of women want 30-60minutes in treatment duration. and 47.2% of men and 51.6% of women want to teach only evaluation and treatment method. 4. In the payment of adequate service for home visiting physical therapy, 47.9% of men and 49.3% of women want insurance with private charge (P<0.05), 58.8% of men and 55.2% of women want insurance direct charge and traffic fee and visiting fee for the private charge. 37.0% of men wants 4,000won-4,900won and 32.7% of women wants 2,000won-2,900won for the traffic fee. 43.0% of men wants 5,000won-9,900won and 48.0% of women wants 5,000won-5,900won for the visiting fee. 5. In the qualifications for home visiting physical therapy, 44.8% of men wants to have license and learn home treatment method but 47.1% of women wants to have license and career and learn home treatment method(P<0.05). In the career, 38.8% of men wants above 5 years, 39.5% of women wants above 3 years(P<0.01). 63.0% of men and 66.4% of women answered with unconcern but 18.8% of men wants physical therapist worked in general hospital and 20.6% of women wants in welfare center(P<0.01). 92.7% of men and 92.4% of women answered no interested in physical therapist's gender. The most preferential age of home visiting physical therapist was also no interested in physical therapist's age.

• 대한근전도전기진단의학회지
• /
• 제20권2호
• /
• pp.106-111
• /
• 2018

Transcranial magnetic stimulation (TMS) has been a gold standard for investigating central motor pathways in humans. Diffusion tensor imaging with fiber tractography (DTI FT) is known for its usefulness in detecting white matter lesion in vivo. We investigated the clinical usefulness of elucidating the integrity and continuity of corticospinal tract (CST) by combined use of TMS and DTI FT in this study. We report two cases who have presented with left hemiparesis and evaluated by both TMS and DTI FT; 10-year-old boy with Mitochondrial Encephalomyopathy with Lactic Acidosis and Stroke-like episode syndrome and 20-year-old woman with traumatic brain injury. Combined use of TMS and DTI FT successfully led to localize the brain lesion that might cause motor impairment in patients with abnormal signal intensities in MRI. The results of this study suggest that TMS and DTI FT might provide the detailed information between function and anatomy of the CST, complementarily.

• 핵의학기술
• /
• 제17권1호
• /
• pp.48-52
• /
• 2013

뇌졸중, 외상성 뇌손상 및 파킨슨병 등과 같은 성인 뇌병변 환자 중 오랜 시간 침상 생활이 요구되는 경우 음식물이 나 타액의 흡인으로 인해 폐렴 및 호흡기계 질병을 일으키는 원인이 될 수 있다. 반복되는 폐렴이나 폐 증상이 있는 환자의 경우 구강을 통한 식이의 중지와 위 식도 역류를 배제한 후에도 증상이 지속된다면 타액의 흡인으로 인한 폐흡인의 가능성을 확인할 필요가 있다. 본 연구에서는 뇌병변 환자에서 흡인성 폐렴 진단을 위한 방사핵종 타액 신티그래피의 유용성을 알아보고자 한다. 2011년 12월부터 2012년 8월까지 본원 재활의학과에 입원한 뇌병변 환자 중 타액으로 인한 흡인성 폐렴 진단을 위해 핵의학과에 검사의뢰한 성인 10명(남 6명, 여 4명)을 대상으로 하였다. 검사전 금식을 하였고, $^{99m}Tc_{O4}$ 185 MBq (5 mCi)를 1 mL 미만의 용액으로 만들어 구강내에 주입하였다. 주입 즉시 20분간 동적 영상 후 정적 영상을 획득하였고, 필요시 2~4시간의 지연 검사를 하였다. 전체 10명의 환자 중 방사핵종 타액 신티그램에 양성 반응을 보인 환자는 6명으로 양성 반응율이 60%였다. 양성 반응을 보인 4명의 환자에서는 구강내 주입 후 20분간의 동적 영상에서 흡인 여부를 확인할 수 있었고, 나머지 2명의 환자에서는 4시간의 추가 지연 검사에서 흡인 여부를 확인 할 수 있었다. 타액의 흡인을 확인한 1명의 환자는 치료 후 재 시행한 추적검사에서 음성 반응을 보였다. 거동이 불가능한 뇌병변 환자에서 방사핵종 타액 신티그래피를 통해 대상자의 60%에서 타액에 의한 폐 흡인을 확인하였다. 본 연구는 흡인성 폐렴을 진단할 수 있는 타 검사에 비해 환자 자세의 변동이 불필요하고, 비교적 적은 시간과 간단한 검사 방법을 통해 진단과 치료를 위한 영상적 정보를 제공하는데 유용하리라 사료된다.

• 재활치료과학
• /
• 제1권1호
• /
• pp.71-79
• /
• 2012

목적 : 외상성 뇌손상 환자를 대상으로 대인관계 능력과 일상생활활동 수행능력의 상관관계를 알아보고자 하였다. 연구방법 : 대구에 소재한 K병원의 외상성 뇌손상 환자 20명을 대상으로 2012년 3월부터 2012년 4월까지 대인관계 능력과 일상생활활동 수행능력을 평가하였다. 연구도구로 대인관계 능력을 위해 대인관계 변화척도(Relationship Change Scale; RCS), 일상생활활동 수행능력을 위해 기능적 독립척도(Functional Independence Measure; FIM)를 사용하여 평가하였다. 결과 : 첫째, RCS는 결혼여부와 유병기간에서 유의한 상관관계를 보였다. 둘째, RCS는 FIM 총점과 FIM 인지영역과는 유의한 상관관계를 보였지만, FIM 운동영역과는 유의한 상관관계를 보이지 않았다. 결론 : 본 연구의 결과, TBI 환자의 대인관계 능력은 결혼 상태와 유병 기간이 영향을 미치고, 대인관계 능력이 일상생활활동 수행능력에 영향을 미친다는 것을 알 수 있다. 사회인지 기능의 장애는 손상 후 재활을 어렵게 하는 요소로 이 기능의 손상은 일상생활에서 인간관계에 부정적인 영향을 주는 요인으로 TBI 손상 후 대인관계 능력에 대한 정확한 평가와 더불어 치료가 발병초기부터 재활치료에 병행된다면 보다 많은 환자의 사회인지 및 일상생활활동 수행능력의 향상을 기대할 수 있을 것이다.

• 생명과학회지
• /
• 제31권2호
• /
• pp.237-247
• /
• 2021

신경염증(neuroinflammation)은 여러 신경 질환의 원인 인자로 확인되고있다. 중추 신경계에 발현되는 단백질 복합체인 NLRP3 인플라마좀은 미생물, 응집되고 잘못 접힌 단백질, ATP와 같은 광범위한 외인성 및 내인성 자극에 의해 감지되고 캐스페이즈-1(capase-1)을 활성화할 수 있다. 활성을 띠는 캐스페이즈-1은 IL-1b와 IL-18과 같은 염증성 사이토카인(pro-inflammatory cytokine)을 활성화시키고 급속한 세포사멸(파이롭토시스, pyroptosis)를 야기한다. IL-1b와 IL-18, 그리고 파이롭토시스를 통해 분비된 DAMPs은 다양한 신호 전달 경로를 통해 신경염증 반응을 유도하여 신경 손상을 유발한다. 따라서 NLRP3 인플라마좀은 신경염증으로 인한 여러 가지 신경질환 발병에 중요한 역할을 할 것으로 여겨진다. 본 리뷰 에서는 NLRP3 인플라마좀의 구조와 활성화에 대해 간략히 알아 보고 다양한 형태의 신경 질환에서 NLRP3 인플라마좀의 역할에 대해 논의하고자 한다.