• Journal of Chest Surgery
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• 제53권6호
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• pp.368-374
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• 2020

Background: The extracorporeal ventricular assist device (e-VAD) system is designed for left ventricular support using a permanent life support console. This study aimed to determine the impact of temporary e-VAD implantation bridging on posttransplant outcomes. Methods: We reviewed the clinical records of 6 patients with the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) profile 1, awaiting heart transplantation, who were provided with temporary e-VAD from 2018 to 2019. The circuit comprised a single centrifugal pump without an oxygenator. The e-VAD inflow cannula was inserted into the apex of the left ventricle, and the outflow cannula was positioned in the ascending aorta. The median follow-up duration was 8.4±6.9 months. Results: After e-VAD implantation, lactate dehydrogenase levels significantly decreased, and Sequential Organ Failure Assessment scores significantly improved. Bedside rehabilitation was possible in 5 patients. After a mean e-VAD support duration of 14.5±17.3 days, all patients were successfully bridged to transplantation. After transplantation, 5 patients survived for at least 6 months. Conclusion: e-VAD may reverse end-organ dysfunction and improve outcomes in INTERMACS I heart transplant patients.

• Journal of Chest Surgery
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• 제23권5호
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• pp.844-853
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• 1990

We have performed 27 cases of orthotopic homologous cardiac transplantation using Korean mongrel dogs and one case of sham operation for the evaluation of harmful effect of cardiopulmonary bypass itself on the dog from April, 1989 to June, 1990. Our previous reports have already demonstrated basal hemodynamic and hematologic data on the canine homologous heart transplantation and the fundamental principles of transplantation of the heart. The mean body weight of recipients was 13.2$\pm$1.2kg with a rage of 11 ~ 15kg, and the hemodynamic and hematologic pictures were almost same as the result of previous reports from our hospital, except marked decrease in postoperative platelet count[from 3.18 $\pm$0.80x106/mm3 to 1.41$\pm$0 37x 106/mm3]. Mean survival time was 24.82$\pm$49.40 hours with the longest survival of 264 hours. Donor cardiectomy included coronary vasodilatation with diltiazem, potassium arrest, and the rapid cooling of the heart suspending in the specially designed ice-bath. Median sternotomy provided excellent exposure of the surgical field. 6 \ulcorner0 prolene suture was used for the anastomosis of both atrial cuffs and the great arteries, and we found the fact that stenosis, bleeding, thrombus formation around the anastomotic site could be decreased with the use of everted horizontal mattress suture techniques. Immunosuppression was done with a combination of lower dose Cyclosporin-A, Azathioprine, methyl-prednisolone, but our cases still showed too short survival to worry about graft rejection. Still poor was our quality control of experimental animal, we had much difficulties in postmortem evaluation of the dogs. Low cardiac output due to biventricular failure, intractable supraventricular or ventricular tachyarrhythmia, postoperative massive bleeding, sepsis were most frequent findings that could be thought as a cause of death. A few cases showed subendocardial patch hemorrhage in both ventricular cavity or atrial septum at autopsy, suggesting acute subendocardial infarction. Although our team overcome most of the technical problems of orthotopic heart transplantation, we should pile up further knowledges about donor heart preservation, quality control of animal, infection, rejection, the effect of the cardiopulmonary bypass to improve the results.

• Journal of Chest Surgery
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• 제39권3호
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• pp.226-229
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• 2006

말기 심근병증이나 복잡 선천성 심기형을 가진 영유아나 소아에서 심장이식 수술은 유일의 치료 방법으로 자리잡고 있다. 그러나 공여자의 부족으로 공여자와 수용자의 몸무게 등에 있어 기존의 기준에 적합하지 않은 경우에도 이식을 시행하는 경우가 있다. 그런 경우 이식 후 큰 심장으로 인해 고혈압과 그에 따른 뇌병증 등이 일시적으로 생길 수 있다. 그러나 장기적인 관점에서 심장이 수용자에1 맞춰 재형성이 일어나는 것으로 알려져 있다. 본 증례는 9세 남자 수용자와 그보다 몸무게가 약 두배인 39세의 여자 공여자 간의 심장이식에 관한 것이다. 이번 증례에서도 수용자에서 수슬 우 고혈압 및 뇌병증이 발생하였으나 성공적으로 치료되었다. 공여자의 심장은 심초음파를 통한 3년간의 추적 관찰 결과 재형성을 거쳐 정상적인 용적을 갖게 되었고, 이에 그 결과를 문헌고찰과 더불어 증례 보고하는 바이다.

• Journal of Chest Surgery
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• 제42권5호
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• pp.630-634
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• 2009

International Society for Heart and Lung Transplantation (ISHLT)는 2007년 보고에서 선천성 심질환, 1세 미만의 나이, 이식 당시 체외 막형 산소화 보조가 심장 이식 후 사망의 유의한 위험 요소임을 보고하였으며, 몸무게 차이가 클 경우에도 사망의 위험도를 높인다고 하였다. 이 증례의 환아는 심한 좌심실 유출로 협착, 승모판 폐쇄 부전이 있어 Ross수술과 승모판 성형술을 시행하였으나 술 후 심한 좌심실 기능부전으로 체외 막형 산소화 보조를 적용하였다. 체외 막형 산소화 보조 30일이 경과한 생후 3개월 경 공여자-수용자간 몸무게 비가 4.42에 이르는 매우 큰 심장을 성공적으로 이식하였기에 이식의 기술적인 주요 사항을 문헌 고찰과 함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제35권1호
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• pp.64-67
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• 2002

Eisenmenger's 증후군은 체-폐순환의 이상연결통로를 가진 환자에서 폐혈류량의 과다로 발생한 폐혈관저항의 증가로 인해 우-좌단락이 발생한 경우를 말한다. 이식이 시작된 초기에는 심폐동시이식이 유일한 치료방법 이었으나, 폐이식만으로도 수술 후에 우심실의 기능이 개선됨이 밝혀지면서 최근에는 양측 폐이식만으로도 좋은 결과가 보고되고 있다. 저자들은 큰 동맥관 개존증으로 인한 Eisenmenger's증후군이 동반된 34세 여자 환자에게 순차적 양측 폐이식을 성공적으로 시행하였기에 문헌 고찰과 함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제43권1호
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• pp.73-76
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• 2010

Cardiac allograft vasculopathy (CAV)는 심장 이식 환자의 장기 생존율을 결정하는 중요한 합병증으로서 원위부 혈관의 미만성 병변을 가지는 것이 특징으로 재관류요법을 적용하기 어렵고 성적이 좋지 않다. CAV에 대한 치료로서 심장 재이식은 급성거부반응으로 재이식을 하는 경우보다 예후가 좋고 일차 심장이식 후의 결과와 비슷한 정도로 보고되고 있다. 이에 저자들은 28세 남자 환자로 8년 전에 확장성 심근증으로 일차 심장이식을 받은 뒤 만성 거부 반응으로 CAV가 발생하여 경피적 관상동맥 확장술을 시행하였으나 재협착과 심부전의 반복으로 더 이상의 재관류요법이 어려운 환자에게 심장 재이식을 하여 치료하였기에 보고하는 바이다.

• 보건행정학회지
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• 제7권2호
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• pp.46-64
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• 1997

Background & Objectives : Korea is face with the social need for health care technology assessment so that it is urgently needed to found principles and methodology in technology assessment in health care. As a groundwork for health care technology assessment, we tried to prioritize medical technology for assessment. Among medical technologies, procedure is somewhat difficult to assess, compared to drug or equipment. In this study, we aimed at the prioritisation of medical procedure to be assessed, in terms of efficay, safety, and adequacy. Method : For the standardized classification of medical procedure, ICD-9-CM(International Classification of Diseases 9th edition - Clinical Modification) was used. Among the list the procedures coming under otorhinolaringjology and thoracic surgery were selected by three family physicians. The list of procedure was mailed to the board certified surgeons of both disciplines, with the question asking about the necessity for assessment in terms of efficay, safety, and adequacy. Replied questionnaires were analyzed in each procedure. Results : Of 560 otorhinolaryngologist and 480 thoracic surgeon, 114 surgeons replied. Of otorhinolaryngological procedure, incision, excision, and destruction of inner ear : fenestration of inner ear : stapedectomy and its revision were the most urgent technology to assess in the aspect of safety. For adequacy, operations on Eustachian tube: fenestration of inner ear: incision, excision, and destruction of inner ear were highly ranked in necessity, and for efficary, operations on Eustachian tube; external maxillary antrotomy; fenestration of inner ear. Thoracic surgeons replied thoracic procedures, lung transplantation; heart transplantation; implantation of heart assist system [pump] are most important for evaluation in terms of safety; and heart transplantation; Lung transplantation; Implantation of heart assist system [pump] in terms of adequacy, and surgical collapse of lung [Artificia니 pnemothorax or pnuexoperitoeum]; lung transplantation; periarterial sympathectomy in terms of efficacy. As a whole, surgeons regard safety evaluation is more urgent than adequacy or efficary. In addition, otorhinolaryngological surgeons regard evaluation of their procedures more urgent than thoracic surgeons regard theirs. Conclusion : By the questionnaire to board certified physicians, we get some preliminary data for prioritisation of technologies to assess. Through the questionnaire like this, much information would be gathered for technology assessment, especially for medical procedure, if not enough. In the near future, well structured expert opinion gathering research, such as modified Delphi or nominal group technique, should be done succeedingly.

• 대한피부과학회지
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• 제56권10호
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• pp.603-608
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• 2018

Background: It is well known that skin cancer and precancerous disease develop more frequently in patients undergoing solid organ transplantation than normal populations in the normal population in Western countries. However, to date, the clinical and demographic features of skin cancer and precancerous disease after solid organ transplantation are not established in Asian countries. We evaluated the clinical and demographic features of primary skin cancer and precancerous lesions after solid organ transplantation and compared these with the trends observed in Western countries. Methods: We retrospectively reviewed the medical records of patients who underwent kidney, liver, heart, and lung transplantation between January 1995 and April 2017 and who developed skin cancer or precancerous lesions after transplantation. The various lesions observed were squamous and basal cell carcinoma, malignant melanoma, Kaposi sarcoma, Bowen's disease, and actinic keratosis. Results: We identified 4604 patients who received organ transplant. The mean age of patients was 44.8 years (male, 64.6%; female, 35.4%), and the sum of the person-year of observation time was 31,024 person-years. The incidence rate per 100,000 person-years was 29.01 for squamous cell carcinoma, 19.34 for basal cell carcinoma, 6.45 for malignant melanoma 3.22 for Kaposi sarcoma, and 74.17 for Bowen's disease and actinic keratosis. The incidence rate per 100,000 person-years was the highest in patients undergoing heart transplantation (610.50), followed by those who underwent kidney transplantation (136.54) and liver transplantation (90.15). Koreans showed lower incidence rates than those observed in Westerners. Conclusion: The incidence of primary skin cancer and precancerous lesions after solid organ transplantation in Koreans was lower than that in Westerners. Squamous cell carcinoma was the most common skin cancer in patients undergoing solid organ transplantation and the incidence rate of skin cancer and precancerous lesions was the highest in patients undergoing heart transplantation.

• Journal of Chest Surgery
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• 제53권6호
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• pp.375-380
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• 2020

Background: Prolonged ischemic time is a risk factor for primary graft dysfunction in patients who undergo heart transplantation. We investigated the effect of a supplemental cardioplegia infusion before anastomosis in patients with long ischemic times. Methods: We identified 236 consecutive patients who underwent orthotopic heart transplantation between February 2010 and December 2014. Among them, the patients with total ischemic times of longer than 3 hours (n=59) were categorized based on whether they were administered a complementary cardioplegia solution (CPS) immediately before implantation (CPS+, n=30; CPS-, n=29). Results: The mean total ischemic times in the CPS+ and CPS- groups were 238.1±30.1 minutes and 230.1±28.2 minutes, respectively (p=0.3). The incidence of left ventricular primary graft dysfunction (CPS+, n=6 [20.0%]; CPS-, n=5 [17.2%]; p=0.79) was comparable between the groups. In the Kaplan-Meier survival analysis, no significant difference in overall survival at 5 years was observed between the CPS+ and CPS- groups (83.1%±6.9% vs. 89.7%±5.7%, respectively; log-rank p=0.7). No inter-group differences in early mortality (CPS+, n=0; CPS-, n=1 [3.4%]; p=0.98) or complications were observed. Conclusion: The additional infusion of a cardioplegia solution immediately before implantation in patients with longer ischemic times is a simple, reproducible, and safe procedure. However, we did not observe benefits of this strategy in the present study.

• Journal of Chest Surgery
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• 제57권3호
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• pp.312-314
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• 2024

A 3-year-old boy with Glenn physiology exhibited refractory heart failure with reduced ejection fraction. To improve the patient's oxygen saturation, he underwent ventricular assist device (VAD) implantation with concomitant Fontan completion. The extracardiac conduit Fontan operation was performed with a 4-mm fenestration. For VAD implantation, Berlin Heart cannulas were positioned at the left ventricular apex and the neo-aorta. Following weaning from cardiopulmonary bypass, a temporary continuous-flow VAD, equipped with an oxygenator, was utilized for support. After a stabilization period of 1 week, the continuous-flow VAD was replaced with a durable pulsatile-flow device. Following 3 months of support, the patient underwent transplantation without complications. The completion of the Fontan procedure at the time of VAD implantation, along with the use of a temporary continuous-flow device with an oxygenator, may aid in stabilizing postoperative hemodynamics. This approach could contribute to a safe transition to a durable pulsatile VAD in patients with Glenn physiology.