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Cardiovascular surgery : official journal of the I... 35건

  1. [해외논문]   History of ultrasonic duplex scanning  

    Strandness Jr, D.E.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 273 - 280 , 1996 , 0967-2109 ,

    초록

    Abstract Ultrasonic duplex scanning was developed and introduced into clinical practice by the combined efforts of engineers and physicians. The instrumentation represents a marriage of B-mode imaging and Doppler technology. Since its introduction in 1974, numerous modifications and upgrading of the technology have taken place. The modern duplex scanner can be used to study vascular disease wherever it is found in the body.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  2. [해외논문]   Long-term outcome of patients who received Starr-Edwards valves between 1965 and 1977  

    Hayashi, J. ; Nakazawa, S. ; Eguchi, S. ; Ohtani, S. ; Asano, K.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 281 - 287 , 1996 , 0967-2109 ,

    초록

    Abstract To determine the risk factors relating to long-term outcomes of the Starr-Edwards ball valve, data from 150 patients (75 males, 75 females; age range 9–67 years); who underwent valve replacement (44 aortic, 106 mitral) between 1965 and 1977 at Niigata University were reviewed retrospectively. Valve models 6120/6320 and 1260/2320 were mainly used in mitral and aortic positions, respectively. The cumulative follow-up period was 2227.4 patient-years. Using the Kaplan-Meier life-table method, actuarial probability of freedom from valve-related mortality, morbidity and thromboembotism were analysed. Thirteen patients died from various causes during hospitalization. Some 80 patients suffered 97 instances of valve-related morbidity and 58 died during follow-up (up to 28 years). Patient age >50 years affected the actuarial probability of freedom from valve-related mortality in the entire group ( P < 0.05). Valve type and the year of operation were discriminative predictors of thromboembolic complications in the entire group (both P < 0.05) and in the mitral valve replacement group ( P < 0.01 and P < 0.001). However, only the year of operation affected the actuarial probability of freedom from all valve-related morbidity in the entire group and in the mitral valve replacement group (both P <0.05). Univariate analysis revealed that age at surgery, valve type, and the year of operation were related to late postoperative outcome in patients who received a Starr-Edwards ball valve between 1965 and 1977.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Clinical experience with the first 100 ATS heart valve implants  

    Van Nooten, G. ; Caes, F. ; François, K. ; Missault, L. ; Van Belleghem, Y.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 288 - 292 , 1996 , 0967-2109 ,

    초록

    Abstract Between May 1992 and March 1994, 100 consecutive patients had 119 new ATS mechanical bileaflet valves inserted (61 aortic, 50 mitral, eight tricuspid). The mean age of the patients was 63.7 (range 13–82) years. The follow-up period ranged from 5 to 27 months and was complete in all cases. Before surgery, 53 aortic valve patients were in New York Heart Association functional class III or higher. This improved to a mean of 1.3 postoperatively, all patients being in classes I or II. One patient died in hospital, and another 3 months after implantation (actuarial survival rate 98%). One patient had an embolic event 9 days after an aortic valve reoperation which caused a parietal infarction. One tricuspid valve blocked in the open position 6 weeks after implantation as a result of inadequate anticoagulation and was successfully unblocked after 2 days of intensive thrombolytic therapy. Patients were treated by mild anticoagulation without developing bleeding complications. Echocardiographic, transoesophageal and transthoracic valvular gradients compared favourably with the gradients reported in other mechanical valves (including small aortic valves). The haemodynamics were excellent without evidence of significant regurgitation. This was confirmed by an in vitro hydrodynamic evaluation of the valve using a pulse duplicator system. The valve closure caused little noise and was as a result well tolerated.

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  4. [해외논문]   Echocardiographic characteristics of the cryopreserved allograft aortic valve replacement assessed by intraoperative transoesophageal echocardiography  

    Hasegawa, J. ; Kitamura, S. ; Kawata, T. ; Kawachi, K. ; Niwaya, K.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 293 - 298 , 1996 , 0967-2109 ,

    초록

    Abstract Improvements in cryopreservation techniques have made possible excellent long-term results using aortic valve allografts. Few studies, however, have examined the echocardiographic characteristics of allograft aortic valves and postoperative valve function. Aortic allograft function was eveluated in 16 patients by intraoperative transoesophageal echocardiography, postoperative catheterization, and angiography. The mean(s.d.) coaptation zone length of the allograft leaflet was significantly greater (7.3(1.4) mm) than that of the normal aortic valve (3.2(0.8) mm) ( P < 0.01). No regurgitation was noted in any patients with coaptation zone length of 7–11 mm ( P < 0.01). The increment of the leaflet coaptation zone length did not produce a significant pressure gradient during exercise and appeared to be one of the important mechanisms for the prevention of postoperative aortic regurgitation, because commissural orientations may be distorted in the new aortic position. This finding is consistent with the report that allografts with the largest diameter implantable in the recipient annulus should be selected for use.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  5. [해외논문]   Surgical management of complete atrioventricular canal associated with tetralogy of Fallot  

    Bertolini, A. ; Dalmonte, P. ; Bava, G.L. ; Calza, G. ; Lerzo, F. ; Zannini, L. ; Pongiglione, G. ; Moretti, R.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 299 - 302 , 1996 , 0967-2109 ,

    초록

    Abstract Between 1984 and 1993, 12 children with an atrioventricular canal and tetralogy of Fallot underwent surgical repair. The mean(s.d.) age at operation was 58(18) months, and the mean (s.d.) body weight 15 (4) kg. Nine patients underwent 11 palliative procedures. The ventricular septal defect was closed through a combined (right atrial and right ventricular) approach in nine cases, and through a right atrial approach in three, using a prosthetic patch with a wide anterior extension, secured with a running suture. The ‘ostium primum’ defect was closed with a separate prosthetic patch in 11 cases (double-patch technique). Right ventricular outflow obstruction was relieved by a composite infundibular patch (seven cases) or a transanular patch (five). There were four hospital deaths (33%). These were caused by low cardiac output in three cases and infection in one (three deaths occurred in patients with a transanular patch). One patient has so far died during follow-up. Assessment at 50(36) months by echo-Doppler showed moderate-to-severe ‘mitral’ regurgitation in three cases, and moderate ‘ricuspid’ regurgitation with right ventricular dysfunction in one case. Two patients have required further surgery.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  6. [해외논문]   Effects of cardiac surgery on intellectual in and children  

    Haneda, K. ; Itoh, T. ; Togo, T. ; Ohmi, M. ; Mohri, H.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 303 - 307 , 1996 , 0967-2109 ,

    초록

    Abstract Intellectual function was evaluated by Gesell's developmental quotient (DQ) and Binet's intelligence quotient (IQ) in 161 infants and children (61 ventricular septal defects, 49 tetralogies of Fallot, 15 transpositions of the great arteries, seven atrial septal defects, five complete atrioventricular canals, five double outlet right ventricles and 19 shunt cases; average age 3.6 years) before and after cardiac surgery. There were no significant differences in preoperative DQs and IQs among the patient groups. Although average DQ scores in 21 infants with hypothermic (13–24 °C) total circulatory arrest (36–70 min) were not significantly different from the preoperative values, 13 patients with an arrest time >50 min showed a significant decrease in DQ scores. The postoperative DQ and IQ scores in patients without circulatory arrest or in shunt cases were not significantly impaired after surgery. It was concluded that cardiac surgery did not impair intellectual function in infants and children, although cerebral dysfunction might occur if circulatory arrest was >50 min.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Gastric intramucosal pH and hepatic venous oximetry after cardiopulmonary bypass in valve replacement patients  

    Takahashi, T. ; Kunimoto, F. ; Ichikawa, H. ; Ishikawa, S. ; Sato, Y. ; Hasegawa, Y. ; Morishita, Y.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 308 - 310 , 1996 , 0967-2109 ,

    초록

    Abstract To determine splanchnic perfusion after cardiopulmonary bypass, gastric intramucosal pH (pH i ) and hepatic venous oxygen saturation (S HV O 2 ) were measured in 14 patients with cardiac valve replacement. Blood samples were analysed at 6, 12 and 24 h after admission to an intensive care unit. Gastric pH i increased significantly ( P <0.01) from 7.21 at 6h to 7.31 at 12 h and increased to 7.37 at 24 h while S HV O 2 increased significantly ( P <0.05) from 48% at 6 h to 57% at 12 h and 24 h. Cardiac index was >41/min per m 2 and mixed venous oxygen saturation >70%. Despite sufficient cardiac output, splanchnic perfusion decreased after cardiopulmonary bypass and recovered within 24 h after admission to the intensive care unit. It is concluded that gastric pH i and S HV O 2 are useful parameters for monitoring postoperative splanchnic perfusion in patients with open-heart surgery.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   Open-heart surgery in Jehovah's Witness patients  

    Chikada, M. ; Furuse, A. ; Kotsuka, Y. ; Yagyu, K.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 311 - 314 , 1996 , 0967-2109 ,

    초록

    Abstract Open-heart surgery has been performed since 1975 on 25 patients who are Jehovah's Witnesses by religion. The patients' ages ranged from 6–60 years, and their body weights from 18–51 kg. Surgical procedures included correction of congenital heart disease in 14 patients and valve repair or replacement in 11. Six procedures were reoperations. The lowest mean haematocrits, during perfusion and the postoperative period, were 22.7% (range 15.0–31.0%) and 27% (range 16.0–36.0%), respectively. Twenty-four patients survived and are alive and well. One patient died of low output failure before discharge. The blood return system reduced blood loss. Five of the patients who underwent cardiac surgery received recombinant erythropoietin before and after surgery, leading to higher postoperative haematocrits. In one patient, a haematocrit which fell to 16.9% after surgery was raised to 27% by administration of erythropoietin, without blood transfusion. In two recent cases, high doses of aprotinin were used during surgery, resulting in better haemostasis after cardiopulmonary bypass.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   Surgical treatment for acute aortic arch dissection  

    Suda, H. ; Itoh, T. ; Natsuaki, M. ; Minato, N. ; Ueno, T. ; Ohteki, H.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 315 - 319 , 1996 , 0967-2109 ,

    초록

    Abstract Between March 1983 and December 1993, 24 consecutive patients with acute aortic dissection resulting from a tear located in the aortic arch or at the base of the innominate artery underwent surgical treatment. Before 1988, 11 patients (group 1) underwent either isolated ascending aorta replacement (eight cases) or composite graft replacement (three) by the conventional method. In this group, the hospital mortality rate was 36.4%; two of seven surviving patients required reoperation for aortic arch. After 1989, 13 patients (group 2) underwent either hemiarch replacement (five cases), total arch replacement (three), extended ascending aortic replacement or composite graft replacement with hemiarch replacement (one) under a brief period of circulatory arrest (mean 33.3 min) at a mean(range) rectal temperature of 20.8(18–23) °C by open distal anastomosis. The operative mortality rate in group 2 was 15.4%. Ten of 13 surviving patients are free from reoperation (mean follow-up 40 months). In most patients with acute type A dissection in which the tear is located at the proximal aortic arch or at the base of the innominate artery, the use of an open technique during a brief period of hypothermic circulatory arrest is advocated to: (1) perform a more secure distal anastomosis; (2) provide a more accurate assessment and resection of intimal disruption; and (3) avoid further aortic injury from the cross-clamp.

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    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  10. [해외논문]   The relationship between functional class, pulmonary artery pressure and size in left atrial myxoma  

    Nakano, T. ; Mayumi, H. ; Hisahara, M. ; Yasui, H. ; Tokunaga, K.
    Cardiovascular surgery : official journal of the International Society for Cardiovascular Surgery v.4 no.3 ,pp. 320 - 323 , 1996 , 0967-2109 ,

    초록

    Abstract To examine the correlation between the size of left atrial myxoma, the degree of pulmonary hypertension and the patient's New York Heart Association (NYHA) functional class, the records of 29 surgically treated patients with left atrial myxoma were reviewed. Of 29 patients, 23 were catheterized before surgery. As the preoperative NYHA functional class advanced, the preoperative mean pulmonary artery pressure (mmHg) was seen to increase. Moreover, the weight of the excised myxoma also correlated well with the preoperative pulmonary artery pressure value. In five patients inserted with a Swan-Ganz catheter, the mean pulmonary artery pressure decreased immediately after tumour excision. Postoperatively, the average NYHA class of the 29 patients significantly improved. These results confirmed the positive correlation between the size of the tumour, the pulmonary artery pressure, and NYHA class in patients with left atrial myxoma.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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