• Journal of Chest Surgery
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• 제35권9호
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• pp.680-683
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• 2002

우측 심장에 발생한 감염성 심내막염은 전체 감염성 심내막염의 5%를 차지하며 이중 70%이상에서 선천성 심기형이나 후천성 판막질환 등에 동반되어 발생한다. 환자들은 약물 남용의 과거력을 갖는 경우가 많으며, 혈액투석 등 의인성 감염성 심내막염이 발생하는 경우도 있다. 우측 심장에 발생한 감염성 심내막염은 항생제 치료에 대한 반응이 우수하고, 내과적 치료에 반응하지 않더라도 판막손상이나 색전에 의한 합병증이 상대적으로 적게 발생하기 때문에 수술이 필요하지 않은 경우가 많다. 만성신부전으로 혈액투석을 받는 환자들은 관혈적 투석경로를 통해 균혈증에 노출되고 이로 인해 감염성 심내막염이 속발된다. 본 교실에서는 혈액투석을 받던 말기신부전 환자에서 정맥내 도관과 관련하여 삼첨판막이나 폐동맥판막의 침범없이 우심방내 우종을 동반한 심내막염이 발생하였으며, 항생제 치료를 시행하였으나 반응이 없어 수술을 시행하였다. 속목정맥도관과 관련된 우측 심장의 감염성 심내막염은 혈액투석환자에서 매우 드물게 발생하지만 진단이 지연되고 이로 인해 적절한 시기에 치료를 받지 못하여 병원내 사망률을 높이므로 적극적인 진단과 처치가 필요함을 확인할 수 있었기에 이를 문헌고찰과 함께 보고하는 바이다.

• 정보보호학회논문지
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• 제18권2호
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• pp.75-84
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• 2008

최근 일반 CRT-RSA 알고리듬은 오류 주입 공격에 취약하다는 점이 실험적 결과에 의해 밝혀졌다. 본 논문에서는 CRT-RSA에 대한 오류 주입 공격 및 방어 대책을 분석하고 다양한 형태의 오류 주입 공격을 방어할 수 있는 새로운 알고리듬을 제안하고자 한다. 제안하는 알고리듬은 CRT-RSA에서 두 소수에 대한 멱승연산 시 오류가 발생하면 그 오류를 재결합 과정에서 확산되도록 설계하였다. 이 알고리듬은 판정 기법에 기반한 오류를 검사하는 과정이 없으며 공개 파라미터 e를 사용하지 않는다. 또한 계산량 측면에서도 안전성을 갖춘 타 방식에 비해 효율적이다.

• 대한소아치과학회지
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• 제34권3호
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• pp.461-467
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• 2007

감염성 심내막염은 치과치료로부터 발생할 수 있는 심각한 심장질환 합병증이며, 생명을 위협하는 치명적인 상황을 초래할 수 있다. 따라서 심내막염 예방을 위하여 위험군에 속하는 환자에서 침습적 술식을 행하기에 앞서 예방적 항생제를 전투여한다. 본 증례는 영구치 근관치료 후 발생한 감염성 심내막염을 주소로 내원한 환아로서 심실중격결손으로 인해 예방적 항생제를 투여했음에도 불구하고 심내막염이 발병하여, 항생제 요법 후 의심되는 원인치아를 발거하고 심장수술을 시행하였다. 이에 다소의 지견을 얻었기에 보고하는 바이다.

• Journal of Chest Surgery
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• 제21권5호
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• pp.889-893
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• 1988

We experienced a case of infective endocarditis of aortic valve and tricuspid valve associated with a fistula between aorta and right ventricle. The patient was 35 years old woman and showed severe congestive heart failure. Large and multiple vagetations were found on the valvular surfaces and a fistula was present between aorta and right ventricle. Probably infective endocarditis of aortic valve resulted in annular abscess and as it healed, a fistula was formed and tricuspid valve endocarditis followed. We replaced the aortic valve and tricuspid valve with St. Jude mechanical prostheses, and closed the fistula opening with suture. The postoperative course was smooth and the patient has no problems till now 4 months after operation.

• Journal of Microbiology and Biotechnology
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• 제7권3호
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• pp.189-193
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• 1997

Cryptosporidium parvum has been recognized as a significant cause of life-threatening diarrhea in Acquired ImmunoDeficiency Syndrome (AIDS) patients. Clinical diagnosis of cryptosporidial infections has been primarily based on the detection of infective stage, oocysts, in stools. Anti-Cryptosporidium oocyst monoclonal antibody (mAb), IgG2a, recognizing an antigen of 97 kDa was generated to be used for diagnosis of Cryptosporidium infection in AIDS patients using an immunofluorecence. It appeared to react with the surface antigens. Transmission electron micrographs of the infective stage of Cryptosporidium recognized by this mAb demonstrated sporolulated oocysts, which measure $4~6{\mu}m$, and sporozoites excysting from oocysts.

• 대한수의학회지
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• 제11권2호
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• pp.157-161
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• 1971

This experiment was undertaken in order to investigate whether chicken can serve as a carrier for swine lungworm, Metastrongylus apri. The results abtained are summerized as follows: All chickens which were fed the infective larvae of M. apri, in the form of infected earthworm (Eisenia foctida) excreted appreximately 4.4 to 5.4 percent of the infective larvae in their feces between 2 to 10 hours after dosing. The larval excretion was marked especially during the first 2 hours. A few (0.10~0.12%) larvae were detected from the intestinal wall of chickens by pepsin-digestion method on a day after dosing, but no further migration or development of the larvae was observed. The larvae which had passed through the digestive tract of chickens retained their viability and produced characteristic lungworm disease when inoculated to guineapigs. From these results, it may he concluded that the chicken can serve as a carrier for the infective larvae of M. apri.

• Journal of Chest Surgery
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• 제52권6호
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• pp.425-427
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• 2019

Coronary artery fistula is an abnormal communication between the coronary artery and the cardiac chambers. In particular, an abnormal connection between the conus branch of the right coronary artery and the proximal left anterior descending coronary artery is defined as Vieussens' arterial ring. Coronary artery fistulas are usually asymptomatic, but some can cause complications such as infective endocarditis. Here, we report a case of Vieussens' arterial ring causing infective endocarditis with severe mitral regurgitation.

• Journal of Chest Surgery
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• 제19권4호
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• pp.584-594
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• 1986

Despite the multivariate improvements in tissue treatment, material, and design of prosthetic heart valves in recent years, numerous complications that may lead to valve dysfunction remain a constant threat after valve replacement. Most common indications for prosthetic valve failure are primary valve failure, infective endocarditis, paravalvular leakage, and thromboembolism. From 1977 to 1986, 15 patients underwent reoperation for prosthetic valve failure in 278 cases of valve surgery. The etiology of prosthetic valve failure were primary valve failure in 12 patients [80 %], infective endocarditis in 2 patients [13.3 %], and a paravalvular leakage [6.7 %]. The average durations of implantation were 45.5 months; 53.9 months in primary valve failure, 16 months in infective endocarditis, and 4 months in paravalvular leakage. The rate of valve failure was high under age of 30 [11/15]. Calcifications and collagen disruption of prosthesis were main cause of primary valve failure in macro- & micropathology. Prosthesis used in reoperation were 5 tissue valves and 10 mechanical valves. Operative mortality were 13.3 % [2/15], due to intractable endocarditis and ventricular arrhythmia.

• Journal of Chest Surgery
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• 제21권1호
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• pp.121-130
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• 1988

During one year period from Sep. 1986 to Sep. 1987, we have experienced 6 cases of infective endocarditis requiring surgical interventions. All 6 patients had class IV or V cardiac disability at the time of surgery. The indication for surgery was rapidly progressive congestive heart failure in all cases. Four patients underwent aortic valve replacement including one double valve replacement. Two other patients required other surgical procedures, removal of large left atrial vegetation mass in one patient and excision of destroyed pulmonary valve and aortic vegetation in the other patient. Two patients died; one of mitral annulus rupture after release of aortic clamp and the other of mediastinal bleeding 3 months after replacement of aortic valve. Three out of 4 survivors are in NYHA Class I and the remaining patient is in Class II. We emphasize that early operative intervention is life-saving in patients with persistent or progressive congestive heart failure, irrespective of the activity of the infective process or the duration of antibiotic therapy.

• Journal of Chest Surgery
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• 제54권3호
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• pp.218-220
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• 2021

The simultaneous incidence of infective endocarditis and cervical spondylitis with an epidural abscess is rare, and quadriplegia as a complication after cardiac surgery is very rare. We recently observed quadriplegia after mitral valve replacement in an infective endocarditis patient with cervical spine spondylitis. With early symptom detection, immediate examination, and prompt surgical treatment, the patient successfully recovered without neurological symptoms.