[Grafting of aortic valve and ascending aorta in the patient after heart injury and aortal commissurotomy].
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Biomedical subjects
Publications and source records attributed to Iu V Belov.
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Primary results of albumin surgical glue application during surgical grafting of thoracic aorta are analyzed. It is demonstrated that the glue is an effective method of hemostasis, permits the surgeon to decrease time of surgery, intra- and postoperative hemorrhage.
The experience with resection of abdominal aortic aneurysms in 72 patients through minilaparotomy is analyzed. Surgery was performed in elderly patients (mean age was 73.5+/-5.7 years) with severe concomitant diseases. The size of the aneurysms was large and middle in 64%, patients with small aneurysms had occlusive and stenotic lesions of the iliac segment with chronic lower limb ischemia of stage II and III. An original surgical method is proposed with use of special vascular instruments and a"mini-assistant" set. Simultaneous operations along with aneurysms resection were performed in 10 (13.8%) patients. Good results were achieved in 97.3% cases. The application of a mini-approach is limited by intra- and suprarenal locations of the aneurysm.
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MATERIAL AND METHODS: A total of 24 patients were examined after surgery on the thoracic or abdominal aorta. Depending on the level of the aortic clamping at the main stage of the operation, the patients were subdivided into three groups: Group One was composed of 7 patients with aortic coarctation in whom the level of artery clamping was located just below the subclavian artery, Group Two comprised 7 patients with an aneurysm of the infrarenal aortic portion, with the clamp applied immediately underneath the renal arteries, and Group Three consisted of 10 patients with type IV thoracoabdominal aortic aneurysm according to Crawford's classification, with the artery being clamped above the diaphragm. The studies were carried out at the following stages: before and at the end of surgery, then 6 hours thereafter, and at 24 hours postoperatively. RESULTS: The alterations in the indices of plasma-thrombocytic haemostasis at all the stages were insignificant and did not differ reliably between the groups. In Group One patients, the time of XHa-kallikrein-dependent fibrinolysis (XIIaKDF) at the end of the operation was found to be within the range of the normal values(657.5+/-92.3 s) and had no statistically reliable differences from the baseline value (612.0+/-63.7 s). After 6 hours and on day 1 after the operation, we observed inconsiderable inhibition of the fibrinolytic activity (903.0+/-142.3 and 848.9+/-149.5 s, respectively). In Group Two patients at the end of the operation, we registered a statistically reliable, as compared with the baseline value, shortening of the time of XIIaKDF (from 990.0 +/-81.0 to 510.0 +/- 103.6 s, p<0.05). However, the subsequent stages of the follow-up revealed a dramatic decrease in the fibrinolytic activity (to1.388.0+/-183.1 s). Group Three patients demonstrated a considerable activation of fibrinolysis at the end of the operation (348.2 +/-48.5 s), which was noted to remain unchanged during the first 24 postoperative hours, with the alterations in the D-dimer's concentration in patients of all groups at the stages of observation being of a unidirectional pattern, i. e. increasing maximally after 6 hours to be then decreasing on the first 24 hours after the operation. CONCLUSION: To prevent postoperative haemorrhage associated with hyperfibrinolysis in aortic operations, it is necessary to administer antifibrinolytic drugs with due regard for the level of aortic clamping.
Traumatic injuries to the thoracic aorta consequent on closed chest traumas present an extremely severe and unfavourable condition as regards natural history. One of the specific disease variants lies in the formation of false post-traumatic aortic aneurysm with an arteriovenous fistula. In the presence of post-traumatic aneurysm of the thoracic aorta with an arteriovenous fistula, the disease course may be complicated by the phenomena of circulatory decompensation. Taking into account certain features of the morphology and pathogenesis of the given disease, surgical interventions require strict adherence to a number of the rules which make it possible to avoid intraoperative aneurysmal rupture. The present paper describes a case of successful surgical treatment of acute false post-traumatic aneurysm of the aortic arch with an arteriovenous fistula under profound hypothermia and circulatory arrest. Presented herein is also a review of the literature concerned with the topic.
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Anomalous origin of left coronary artery from pulmonary artery is a rare congenital pathology causing death of most patients because of various arrhythmia and heart failure. The authors present 4 cases of this anomaly with description of clinical course, diagnosis and surgical procedures. The first patient was operated upon in 12 years after mitral valve replacement. Ligation of anterior interventricular and circumflex arteries at their origin in this patient was combined with anastomosis between mammary and anterior interventricular coronary arteries. Reimplantation of the left coronary artery into the aortic root was used in other 3 patients with good immediate postoperative effect. Restoration of left ventricular pump function occurred in all 3 patients.
Quality of life (QL) of 65 patients with ascending aorta aneurysms before and after surgical treatment was studied with SF-36 questionnaire. This group of patients demonstrates initial lower indices of QL on all the scales of questionnaire. In long-term period after surgery these indices significantly improve and correlate with clinical and hemodynamical result of surgery.
Bentall procedure is considered to be operation of choice for ascending thoracic aneurysms with aortic regurgitation. The however procedure has some inherent drawbacks (e.g. need of lifetime anticoagulation because of risk of late thromboembolic complications). These drawbacks can be eliminated by the use of valve saving surgery. We present a case of nontraditional valve saving operation combined with myocardial revascularization in a patient with ascending thoracic aneurysm, aortic regurgitation and ischemic heart disease. Technique of sinus of Valsalva plication for narrowing of sino-tubular ridge during prosthetic replacement of the ascending aorta turned out to be effective in this situation. The procedure described requires correct assessment of the state of aortic valve and selection of prosthesis of suitable diameter.
The paper summarizes an experience with surgical treatment of ascending aortic aneurysms, gained at the Russian Scientific Center of Surgery, RAMS. Ninety-two patients operated on for the complicated and uncomplicated forms of ascending aortic aneurysms were entered into the study. A comparative analysis was made of the long-term results of different types of surgical interventions. The authors demonstrate the advantages of operations using valve-containing conduits and of operations which consisted in graded intima-sparing resection of aortic aneurysm and eco-prosthetics. The survival of patients over the period as long as 12 years after operation accounted for 86%.
Over 5-years, 167 reconstructive surgeries for stenosis of internal carotid arteries (ICA) were performed in 124 patients. Mean age of the patients was 63.5 years. One hundred and twenty-nine carotid endarterectomies (CEAE) in 86 patients and 38 reconstructive operations of ICA in 38 patients were performed. There were no lethal outcomes in short- and long-term postoperative period. In short-term period after prosthesis of ICA restenosis was revealed in 3% patients, after eversion CEAE in 3% patients the embolism was seen, after standard CEAE restenosis were diagnosed in 8% patients and thrombosis -- in 3%. In long-term period after grafting of ICA the strokes were seen in 3%, stenosis -- in 6% patients, after eversion endarterectomy -- in 0 and 3% patients, and after standard CEAE -- in 3 and 24% patients, respectively. It is concluded that grafting of ICA is adequate surgical method of reconstruction and stroke prevention in specific variants of carotid atherosclerosis.
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BACKGROUND: Skeleting of internal thoracic artery widens possibilities of a surgeon during mammary-coronary bypass grafting but this procedure is associated with augmented risk of damage of internal thoracic artery (ITA). MATERIAL AND METHODS: ITA was used for creation of anastomosis with anterior interventricular artery in 151 patients. It was harvested on pedicle in 82 (group 1) and subjected to skeleting in 69 (group 2) patients. All operations were performed with cardiopulmonary bypass. In group 2 ITA conduits were more frequently used for grafting distal anterior interventricular artery. RESULTS: There were 3 and 0 deaths in groups 1 and 2, respectively. Rates of nonfatal postoperative complications were similar in both groups. Spasms of ITA grafts were more frequent in group 1. CONCLUSION: Skeleting of ITA for mammary coronary bypass grafting compared with its harvesting on pedicle was not associated with increased risk of complications or elevated mortality in early postoperative period.
The lack of significant changes in the count and function of platelets in aortic surgery without use of cardiopulmonary bypass (CPB) confirms that factors of extracorporeal circulation exert a remarkable adverse action on the platelet component of hemostasis. In operations performed under hypothermic perfusion or circulatory arrest, disorders of the platelet component even in case of the use of 2 mln. CIU trasylol (aprotinin) are most pronounced which gives rise to excessive postoperative blood loss in the given patient group. It may be assumed that the increase of the dose of trasylol up to 6 mln. CIU will allow, owing to its cytoprotective action, preserve as well as possible the quantitative and qualitative properties of platelets.