Polytetrafluoroethylene 을 이용한 체-폐동맥 단락술

안혁,Ahn, Hyuk 대한흉부심장혈관외과학회 1985 Journal of Chest Surgery (J Chest Surg) Vol.18 No.2

Nineteen patients with various types of cyanotic congenital heart disease underwent systemic-pulmonary artery shunts with a microporous polytetrafluoroethylene [PTFE] graft between September, 1983, and April, 1985. Age ranged from 3 months to 18 years, and seven of them were less than 12 months old. There were seventeen Great Ormond Street type of modified Blalock-Taussig shunts, and two central polytetrafluoroethylene shunt [ascending aorta-right pulmonary artery]. There was one postoperative death [1/19=5.3%] in a 10 Kg child born with pulmonary atresia and ventricular septal defect associated with patent ductus arteriosus. He had another anomaly of imperforated anus. Relief from cyanosis was achieved in other eighteen patients with variable degree. Eighteen survivors have been followed up from 1 month to 19 months. Clinical status, auscultation, oxygen partial pressure of arterial blood, and hemoglobin have been used to establish shunt patency in all survivors. By above criteria, all survivors have good patent shunt.

Ebstein 기형에 대한 개심술 -12례 보고-

안혁,박이태,노준량,서경필,이영균,Ahn, Hyuk,Park, Yee-Tae,Rho, Joon-Ryang,Suh, Kyung-Phill,Lee, Yung-Kyoon 대한흉부심장혈관외과학회 1983 Journal of Chest Surgery (J Chest Surg) Vol.16 No.2

Ebstein's anomaly is a rare congenital cardiac malformation oand the ideal surgical correction seems controversial at present, and some problems are left unsolved in the surgical correction of this anomaly. Between June 1978 and June 1982, 12 patients with Ebsteins' anomaly underwent corrective open heart surgery at Seoul National University Hospital. Except for one patient, who had no ASD, all had a huge right atrium, secundum type ASD, and definite atrialized right ventricle. Typically, displaced tricuspid valve leaflets were found in all cases, but the degree of displacement and deformity were variable. In the point of NYHA functional classification, five were in class II, six were in class III, and one was in class IV. Ten patients were operated on by tricuspid valve replacement and pication. Two patients were operated on only by plication and annuloplasty techniques, and in all cases, ASD was closed. Postoperatively, four patients suffered from complete A-V block, and two of them died immediately. The remaining two patients took pacemaker generator implantation with good results. The other eight patients were in good condition. Tricuspid valve replacement using tissue valve and plication of the atrialized rght ventricle seems to be a good method of surgical correction for Ebstein's anomaly.

외상성 흉부대동맥류치험 1례 보

안혁,장병철,임승평,Ahn, Hyuk,Chang, Byung-Chul,Lim, Seung-Pyung 대한흉부심장혈관외과학회 1984 Journal of Chest Surgery (J Chest Surg) Vol.17 No.1

A 25 years old male patient with traumatic aneurysm of descending thoracic aorta was treated successfully. He was admitted due to blunt trauma to the chest wall as falling down into water. He has been treated with closed thoracotomy and close observation. After a month simple chest film showed abnormal mass shadow around the aortic knob. Aortogram revealed aneurysm of descending thoracic aorta. Aneurysm was resected and replaced with woven Dacron graft with aid of Gotts shunt. His postoperative course was uneventful.

판막첨 연장술을 이용한 대동맥판막 성형술의 중기성적 평가

안혁,김현조,Ahn, Hyuk,Kim, Hyun-jo 대한흉부심장혈관외과학회 1997 Journal of Chest Surgery (J Chest Surg) Vol.30 No.7

대동맥판막 질환에 대한 판막 성형술이 판막 치환술의 대치 방법으로 대두되고 있는 가운데, 서을 대학교 병원 흉부외과에서는 1995년 3월부터 1996년 8월까지 14명의 환자에서 자가 심낭 편을 이용한 판막첨 연장 술로 대동맥 판막성형술을 시행하였다. 평균 연령은 34.8$\pm$15.3세이었으며, 남자가 11명, 여자가 3명이었다. 수술전 시행한 심초음파 검사 및 심도자 검사에서 협착증을 동반하지 않은 대동맥판막 폐쇄부전증 환자로 폐쇄부전 정도는 평균 3.4$\pm$0.65였으며, 이중 4명의 환자에서 중등도 이상의 승모판 폐쇄부전증을 동반하고 있었다. 수술은 0.625% glutaraldehyde 용액에 15분간 고정시킨 자가 심낭 편을 이용하였으며, 12명의 환자에 서는 세 개의 판막첨을 모두 연장시켜 주었으나, 2명의 환자에서는 상대적으로 짧은 판막의 판막첨만을 연장 시켜 주었으며, 승모판 폐쇄부전증을 동반한 4명에서 승모판 성형술을 동시에 시행하여 주었다. 14명 모두에 서 수술중 경식도 심초음파 검사를 시행하여 폐쇄부전이나 협착이 없는 것을 확인하였다. 수술 후 평균 7.4 $\pm$2.1일에 심초음파 검사를 시행하였으며, 경도의 대동맥판막 폐쇄부전이 3명에서 나타 돛만\ulcorner 승모판 성형 술을 시행한 환자 중 1명에서 경한 정도의 승모판 폐쇄부전이 나타났다. 좌심실의 수축기말과 확장기말 구획 은 수술 후 통계적으로 유의한 정도(p<0.05)의 감소를 보였다. 수술 직후의 사망 환자는 없었다. 수술 후 평균 7.9$\pm$5.9개월간 추적 조사 기간 중 만기 합병증은 2명에서 나타났다. 심내막염 및 대동맥 판막의 증식물이 수술 후 7개월 째 발견되어 대동맥 판막 치환술을 시행 받은 환자가 1명 있었으며, Behcet증후군 환자에서 수술 후 3개월 째 갑작스런 대동맥판막 폐쇄부전증이 나타나 Ross수술을 받은 환자가 1명 있었다. 대동맥 판막의 판막첨 연장술의 조기 성적은 만족할 만한 결과를 보였으며, 특히 젊은 연령의 폐쇄부 전증 환자에서 판막치 환술의 대치술로 우수한 것으로 판단된다. 그러나 자가 심방편의 비후,석회화,또는 파열 등의 내구성에 대한 오랜 기간의 추적 검사가 필요하리라 본다. Aortic valvuloplasty has recently gained attention as an attractive alternative procedure for aortic valvular disease. Between March 1995 to August 1996, 14 patients with pure aortic regurgitation(AR) underwent aortic alvuloplasty using leaflet extension with glutaraldehydepreserved autologous pericardium. There were 11 males and 3 females, and the mean age was 34.8 $\pm$ 15.3 years. Preoperative echocardiography and cardiac catheterization revealed that the degree of AR was mean 3.4$\pm$0.65, and more than moderate degree of mitral regurgitation(MR) were detected in 4 patients. In 12 patients, 3 leaflets were extended and in another 2 patients only one deformed leaflet was extended. Concomitant mitral valvuloplasty (MVP) was performed in 4 patients. The competency of the aortic valve after completion of repair was evaluated by the transesophageal echocardiography in operating theater, and there was no aortic and mitral stenosis or regurgitation. In an early postoperative echocardiography, trivial AR was detected in 3 patients and mild MR in 1 patient. The end-systolic and end-diastolic dimensions of the left ventricle were decreased significantly(p<0.05) as compared with those of preoperative values. T ere was no mortality and no significant postoperative complication encountered. Late complication developed in 2 patients during the follow-up period(mean 7.9$\pm$ 5.9 months). One patient underwent AVR on postoperative 7th month due to endocarditis, and the another patient with Behcet's disease underwent Ross operation at postoperative 4th month. In conclusion, AVP of leaflet extension technique offers an excellent early clinical result and represents a good alterna!ivy surgical treatment for the pure AR especially in young age group, although long-term follow-up is necessary to determine the durability of glutaraldehyde-preserved autologous pericardium as a valve leaflet.

폐격리증에 대한 임상적 고찰

안혁,Ahn, Hyuk 대한흉부심장혈관외과학회 1985 Journal of Chest Surgery (J Chest Surg) Vol.18 No.2

Pulmonary sequestration occurs when some disturbance produces a cystic mass of nonfunctioning lung tissue which lacks normal communication with the tracheobronchial tree. Between 1971 and 1985, pulmonary sequestration was diagnosed in 11 patients, ranging age from 3 to 29 years. All sequestration were intralobar type. Definitive diagnosis can only be obtained by aortography and/or surgical exploration in 10 cases. The other one was confirmed by pathologic examination postoperatively. The presenting complaints were mostly recurrent local pulmonary infection, but in 2 cases mediastinal mass with respiratory symptoms was presented, and cardiac murmur was only finding in one case. Preoperative diagnostic procedure revealed 3 associated anomalies which were funnel chest, right aortic arch, and pulmonic stenosis with vascular ring. Operative treatment for sequestration was lobectomy in 10 cases, and a segmentectomy in one. There was no operative mortality, but 3 complications [empyema, B-P fistula, post-op bleeding] which were controlled by subsequent operations or conservative measure. Aortography is strongly advocated not only for its diagnostic value, but for its preoperative localization of the aberrant vessels that are the major concern to the surgeon.

혈관질환의 수술요법

안혁,김용진,Ahn, Hyuk,Kim, Yong-Jin 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.2

From 1976 through 1986, authors have experienced 127 cases of peripheral vascular surgery which had been done in this department. There were 29 cases of atherosclerosis obliterances including 7 Leriche syndrome, 32 Buerger`s diseases, 25 arterial thromboembolisms, 21 vascular injuries, 2 peripheral arterial aneurysms, 2 renovascular hypertensions, 1 congenital A-V malformation, 13 varicose vein of lower extremities, and 2 Jugular venous ectasia. Cases with vena caval disease and aortic disease were excluded. The mean age of ASO and Buerger`s disease was 56.1 yrs, 33.8 yrs respectively. The male to female ratio showed marked male preponderance [27:2, and 30:2], and almost every male patient was smoker. The indication of operation was similar in both disease entities. The method of operation for ASO were bypass procedure [17], thromboendarterectomy [6], and lumbar sympathectomy [5], and for Buerger`s disease were mainly sympathectomy and few bypass procedures and amputations. Seventeen patients with ASO were followed from 3 to 75 month and overall patency rate for bypass or endarterectomy in one and two months and 2 1/2 yr were 93%, 87%, and 31% respectively. Post operatively patient`s symptoms was relieved or alleviated in almost ASO patients, and about 60% of Buerger`s disease. We concluded that in patient with ischemic limb, we must revascularized aggressively for symptomatic relief. And choice of graft for bypass procedure was to be evaluated further.

마그네슘이온이 적출한 기니피그 대동맥평활근과 흰쥐 자궁평활근의 수축성에 미치는 효과에 관한 연구

안혁,황상익,Ahn, Hyuk,Hwang, Sang-Ik 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.3

It is well known that extracellular Calcium plays a very important role in several steps of smooth muscle excitability and contractility, and there have been many concerns about factors influencing the distribution of extracellular Ca++ and the Ca++ flux through the cell membrane of the smooth muscle. Based on the assumption that Mg++ may also play an important role in the excitation and contraction processes of the smooth muscle by taking part in affecting Ca++ distribution and flux, many researches are being performed about the exact role of Mg++, especially in the vascular smooth muscle. But yet the effect of Mg++ in the smooth muscle activity is not clarified, and moreover the mechanism of Mg++ action is almost completely unknown. Present study attempted to clarify the effect of Mg++ on the excitability and contractility in the multiunit and unitary smooth muscle, and the mechanism concerned in it. The preparations used were the guinea-pig aortic strip as the experimental material of the multiunit smooth muscle and the rat uterine strip as the one of the unitary smooth muscle. The tissues were isolated from the sacrificed animal and were prepared for recording the isometric contraction. The effects of Mg++ and Ca++ were examined on the electrically driven or spontaneous contraction of the preparations. And the effects of these ions were also studied on the K+ or norepinephrine contracture. All experiments were performed in tris-buffered Tyrode solution which was aerated with 100% 02 and kept at 35oC. The results obtained were as follows: 1] Mg++ suppressed the phasic contraction induced by electrical field stimulation dose-dependently in the guinea-pig aortic strip, while the high concentration of Ca++ never recovered the decreased tension. These phenomena were not changed by the a - or b - adrenergic blocker. 2]Mg++ played the suppressing effect on the low concentration [20 and 40 mM] of K+-contracture in the aortic muscle, but the effect was not shown in the case of 100mM K+-contracture. 3] Mg++ also suppressed the contracture induced by norepinephrine in the aortic preparation. And the effect of Mg++ was most prominent in the contracture by the lowest [10 mM] concentration of norepinephrine. 4] In both the spontaneous and electrically driven contractions of the uterine strip, Mg++ decreased the amplitude of peak tension, and by the high concentration of Ca++ the amplitude of tension was recovered unlike the aortic muscle. 5] The frequency of the uterine spontaneous contraction increased as the [Ca++] / [Mg++] ratio increased up to 2, but the frequency decreased above this level. 6] Mg++ decreased the tension of the low[20 and 40mM] K+-contracture in the uterine smooth muscle, but the effect did not appear in the 100mM K+-contracture. From the above results, the following conclusion could be made. 1] Mg++ seems to suppress the contractility directly by acting on the smooth muscle itself, besides through the indirect action on the nerve terminal, in both the aortic and uterine smooth muscles. 2] The fact that the depressant effect of Mg++ on the K+-contracture is in inverse proportion to an increase of K+ concentration appears resulted from the extent of the opening state of the Ca++ channel. 3] Mg++ may play a depressant role on both the potential dependent and the receptor-operated Ca++ channels. 4] The relationship between the actions of Mg++ and Ca++ seems to be competitive in uterine muscle and non-competitive in aortic strip.

장기역위증 및 우심증을 동반한 DORV -치험 1예 보고-

안혁,김용진,노준량,서경필,Ahn, Hyuk,Kim, Yong-Jin,Roh, Joon-Rhyang,Suh, Kyung-Phill 대한흉부심장혈관외과학회 1979 Journal of Chest Surgery (J Chest Surg) Vol.12 No.3

A case of successful surgical correction of double-outlet right ventricle with situs inversus, dextrocardia, subaortic ventricular septal defect, and pulmonic stenosis is described. The great vessels were normally related but in mirror-image arrangement. Another coronary artery anomaly, single origin of coronary artery and a large anomalous coronary artery coursed across the right ventricular outflow tract, was accompanied. Intracardiac repair with a Dacron tunnel conduit and extracardiac jumping graft with a valved conduit gave an excellent result.

대동맥궁 동맥류 -치험 1례 보고-

안혁,김용진,노준량,Ahn, Hyuk,Kim, Young-Jin,Rho, Joon-Rhang 대한흉부심장혈관외과학회 1980 Journal of Chest Surgery (J Chest Surg) Vol.13 No.3

A 21 years old male student was admitted because of mediastinal mass that was noticed in routine physical examination. He complained progressive hoarseness, mild dysphagia, and anterior chest pain on deep respiration. This mediastinal mass was diagnosed as aortic aneurysm involving ascending, transverse, and descending thoracic aorta with aid of aortogram. Total prosthetic replacement of aneurysm was performed successfully using extracorporeal circulation and hypothermia. For myocardial protection during aortic cross clamping, cardioplegic solution was used and topical myocardial cooling was also adapted For simplicity of cardiopulmonary bypass, Y-shaped connectors took cerebral perfusion catheters to the main perfusion line beyond the arterial pump. Total bypass time was 219 minutes, and aortic cross clamp time was 104 minutes. Recovery was uneventful except respiratory insufficiency for first 4 days. Isotope aortogram checked on post operative 30th day showed normal aortic configuration. He was discharged on post operative 35th day. A follow-up chest X-ray study 5 months later showed nearly normal anatomy.

총폐정맥환류이상:3례 수술 보고

안혁,홍장수,노준량,이영균,Ahn, Hyuk,Hong, Jang-Soo,Rho, Joon-Ryang,Lee, Yung-Kyoon 대한흉부심장혈관외과학회 1981 Journal of Chest Surgery (J Chest Surg) Vol.14 No.1

Total anomalous venous return defines a group of congenital heart disease which have in common the entire pulmonary venous drainage returning directly or indirectly to the right atrium instead of to the left atrium. Despite of recent advance in treatment, this severe malformation in its various anatomical forms has a high surgical mortality during early infancy. Because of the high mortality in the untreated infant and the surgical risk in the first year of life, the timing of the operation remains important for optimal result. Three cases of T APV R, two supracardiac types and one mixed type, were treated with extracorporeal circulation during last three years in the Dept. of Thoracic and Cardiovascular Surgery, Seoul National University Hospital. The first one was 10 months old male with supracardiac type which drained through left innominate vein, and he was operated with profound hypothermia and total circulatory arrest but failed. The second case was 7 years old male with supracardiac type drained through left innominate vein, and he was well post operatively, and followed periodically for 12 months. The third case was 24 years old female with mixed type drainage (left upper pulmonary vein drained through left innominate vein, and the others through coronary sinus) was successfully corrected, and she was followed for 4 month without problem. All cases were diagnosed with cardiac catheterization and angiocardiogram, and also with echocardiogram in last two cases. In first two cases of supracardiac type, total circulatory arrest was used in brief period during anastomosis between common pulmonary venous trunk and left atrium. In the last case of mixed type, usual cardiopulmonary bypass with moderate hypothermia was used and total circulatory arrest was not needed.