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1.
Tech Coloproctol ; 24(6): 573-584, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32285229

RESUMO

BACKGROUND: Pelvic organ prolapse (POP) is a dynamic disorder that affects the entire pelvic diaphragm. POP may often involve multiple organs. Abdominal sacrocolpopexy is considered the gold standard to treat female anterior and apical prolapse. Abdominal ventral mesh rectopexy has gained increasing acceptance as an effective treatment for rectal prolapse. The aim of the present study was to assess the safety, feasibility and 1-year outcomes of laparoscopic sacrocolpopexy plus ventral rectopexy as a combined treatment of multicompartment POP. METHODS: All female patients at our institution with anterior and apical prolapse with symptoms of obstructed defecation were examined by an urogynecologist and a colorectal surgeon, and were judged suitable for the study. Patients with Pelvic Organ Prolapse Quantification (POP-Q) system stage III and IV and concomitant rectal prolapse were treated by laparoscopic sacrocolpopexy plus ventral rectopexy. After surgery, 1- and 12-month follow-up was performed and the data were retrospectively analyzed. Patients' symptoms were evaluated using the Female Sexual Distress Scale (FSDS), Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ-12), and Wexner-Agachan constipation score. RESULTS: A total of 98 patients underwent surgery. No intraoperative or postoperative morbidity occurred. At the time of follow-up, all women expressed great satisfaction with the surgical treatment: all the patients had at most POP-Q Stage 1 and 78.8% had a Patient Global Impression of Improvement (PGI-I) score < 3. Significant improvement of symptoms related to POP and to obstructed defecation syndrome, as shown by the FSDS, PISQ-12, and Wexner-Agachan constipation score, was observed in all patients at follow-up CONCLUSIONS: Laparoscopic sacrocolpopexy with ventral rectopexy is a feasible and safe procedure for the combined surgical management of anterior, apical, and posterior prolapse, and provides excellent objective and subjective outcomes.


Assuntos
Procedimentos Cirúrgicos do Sistema Digestório , Laparoscopia , Prolapso de Órgão Pélvico , Prolapso Retal , Feminino , Humanos , Prolapso de Órgão Pélvico/cirurgia , Prolapso Retal/complicações , Prolapso Retal/cirurgia , Estudos Retrospectivos , Telas Cirúrgicas , Resultado do Tratamento
4.
Arch Intern Med ; 147(3): 473-7, 1987 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-3493743

RESUMO

Ninety-nine of 118 patients receiving cardiac valve replacements (n = 55) or coronary artery bypass grafts (n = 44) were studied before surgery and again one year after surgery. Psychological, social, and physical variables were assessed. For the 19 subjects not returning for follow-up, medical data collected by their general practitioner were available. The physical results of surgery were good, with over 90% of the patients showing improvement. Mean scores for psychological distress and quality of life improved; however, a bad psychosocial adjustment was present in about 25% of patients at follow-up. Bad psychosocial adjustment was not correlated with surgical results. The preoperative variables most predictive of poor psychosocial outcome were high scores in the general hypochondriasis and irritability subscales of the illness Behaviour Questionnaire, bad psychological adjustment characterized by high anxiety, depression, and global scores on the Symptom Distress Checklist, and ischemic rather than valvular heart disease.


Assuntos
Procedimentos Cirúrgicos Cardíacos/psicologia , Adulto , Sintomas Afetivos , Idoso , Procedimentos Cirúrgicos Cardíacos/reabilitação , Ponte de Artéria Coronária/psicologia , Emoções , Feminino , Próteses Valvulares Cardíacas/psicologia , Humanos , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Estudos Prospectivos , Qualidade de Vida , Papel do Doente
5.
Am J Cardiol ; 70(13): 1164-8, 1992 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-1414940

RESUMO

Bioprosthetic valves undergo a tissue degeneration of unpredictable onset and amount. This process alters the structure and function of the valve and consequently shortens its lifespan. The echocardiographic technique usually used in the follow-up of these patients does not provide accurate information concerning the amount of prosthesis tissue degeneration. A new technique has been developed based on the spectral analysis of the first heart sound, which enables the evaluation of prosthetic leaflet stiffness. The Young's modulus (E) and stress (s) of the valve leaflets were derived as functions of the inner diameter of the heterograft and its primary vibration frequency, which can be obtained from the frequency spectrum of the first heart sound. Thirty-six patients with a mitral bioprosthetic valve were studied. Fifteen had thickening or calcification, or both, of the valvular leaflets at echocardiographic examination. In patients with a normal valve, E and s showed a good correlation with the duration of implantation (r = 0.909, p < 0.001; and r = 0.828, p < 0.001; respectively). Patients with abnormal leaflets had values of E and s that were greater than the theoretical values expected for their duration of implantation. The procedure is sensitive, accurate and easy to perform, and enables monitoring of the aging of the prosthetic valve and early identification of valve tissue degeneration. Together with echocardiography, this procedure yields a more complete evaluation of prosthetic valves for the follow-up of patients.


Assuntos
Bioprótese , Próteses Valvulares Cardíacas , Idoso , Análise de Fourier , Próteses Valvulares Cardíacas/instrumentação , Humanos , Pessoa de Meia-Idade , Valva Mitral , Fonocardiografia , Falha de Prótese , Processamento de Sinais Assistido por Computador
6.
Am J Cardiol ; 53(8): 1066-70, 1984 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-6702684

RESUMO

Sixty-seven glutaraldehyde-processed porcine bioprostheses (PBs), recovered at autopsy or reoperation from 65 patients, were evaluated by roentgenologic and pathologic examination. Seven patients with 8 PBs were younger than 20 years of age. The time interval of function was 2 to 138 months (average 62). Pathologically, 53 explants had signs of intrinsic dysfunction, which was ascribed to calcification in 36 (68%). By x-ray examination, calcific deposits were found in 55 of 67 PBs (82%). The mean duration of function was 70 +/- 32 months in calcified PBs vs 27 +/- 18 months in noncalcified PBs (p less than 0.001). All 26 PBs that had been in place for longer than 6 years were calcified. In 45 PBs the Ca++ deposits were considered severe (mean time of function 76 +/- 32 months) and mild in 10 (mean time of function 44 +/- 22 months) (p less than 0.005). The Ca++ deposits were located at the commissures in 54 PBs (98%), at the body of cusps in 41 (75%), at the free margin in 37 (67%) and at the aortic wall in 37 (67%). When mild, Ca++ deposits involved the commissures in 90% of cases, the body of cusps in 30% and the free margin only in 10%. Forty-seven calcified PBs were mounted on a flexible stent, and 8 had a rigid stent, with an average time of function of 63 +/- 28 and 113 +/- 18 months, respectively (p less than 0.00001). Ca++ dysfunction occurred earlier in the aortic than in the mitral position (59 +/- 19 vs 86 +/- 35 months, p less than 0.05). All the PBs explanted from young patients and 47 of 59 PBs removed from adult patients were calcified, with an average time of function of 50 +/- 21 vs 73 +/- 33 months, respectively (p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)


Assuntos
Bioprótese/efeitos adversos , Calcinose/etiologia , Próteses Valvulares Cardíacas/efeitos adversos , Adolescente , Adulto , Fatores Etários , Idoso , Calcinose/diagnóstico por imagem , Criança , Falha de Equipamento , Feminino , Valvas Cardíacas/diagnóstico por imagem , Valvas Cardíacas/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia , Fatores Sexuais , Fatores de Tempo
7.
Am J Cardiol ; 50(5): 1051-4, 1982 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-7137031

RESUMO

Seven patients who became pregnant after valve replacement with a Hancock bioprosthesis were followed up during 8 pregnancies. Six had undergone isolated mitral valve replacement, and 1 had mitral and aortic valve replacement. Their age at the time of operation ranged from 14 to 31 years (average 24); delivery occurred 21 to 88 months (average 51.3) after valve replacement. All women were in sinus rhythm at the time of gestation, and administration of oral anticoagulants was avoided in all. No embolic episodes occurred either after operation or during pregnancy, labor, or puerperium. The only major complication during pregnancy was cardiac failure in 1 patient, associated with onset of atrial fibrillation. Four women had vaginal delivery and 3 required cesarean section. All but 1 delivered a normal, healthy baby. One premature infant died soon after birth because of respiratory distress. No maternal or fetal hemorrhagic complications were observed. One patient died 3 months after delivery in severe heart failure caused by diffuse calcification of both mitral and aortic xenografts. Another women underwent successful reoperation soon after the second pregnancy because of calcific stenosis of the mitral porcine valve. It is concluded that (1) bioprosthetic valves can be considered the most suitable devices employed in women of childbearing age because anticoagulants can be avoided, therefore eliminating the risks related to inappropriate administration of oral anticoagulants as well as the hazards associated with the potential teratogenic effect of coumarin drugs; and (2) pregnancy might favor calcification of porcine heterografts, leading to bioprosthetic failure. Until further data are available to support this suspicion, close clinical and echocardiographic follow-up study of these patients is recommended after pregnancy.


Assuntos
Bioprótese , Próteses Valvulares Cardíacas , Complicações Cardiovasculares na Gravidez , Adolescente , Adulto , Anticoagulantes , Valva Aórtica , Bioprótese/efeitos adversos , Calcinose/etiologia , Parto Obstétrico , Feminino , Seguimentos , Humanos , Valva Mitral , Gravidez
8.
Hum Pathol ; 15(11): 1018-24, 1984 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-6489999

RESUMO

The possible determinants of a fatal outcome following surgical repair of the tetralogy of Fallot were analyzed by postmortem examination in 14 cases. Only one patient died late in the postoperative period, due to patch detachment; the others died shortly after undergoing surgery. Death could not be explained in three cases. In three patients with perimembranous ventricular septal defects, complete atrioventricular block occurred as a consequence of traumatic disruption of the branching bundle. In four cases residual stenosis of the pulmonary outflow tract was shown; in one of these cases adequate relief of obstruction had been prevented by a large conal coronary artery. A residual mitral cleft was found in one patient. Death was not related to the cardiac conditions in two cases; one of these patients died of brain apoplexy and the other of tracheal hemorrhage. These findings stress the need for accurate preoperative diagnosis and precise knowledge of the surgical anatomy of this malformation.


Assuntos
Complicações Pós-Operatórias/mortalidade , Tetralogia de Fallot/patologia , Adulto , Criança , Pré-Escolar , Anomalias dos Vasos Coronários/patologia , Feminino , Bloqueio Cardíaco/patologia , Humanos , Lactente , Masculino , Miocárdio/patologia , Complicações Pós-Operatórias/patologia , Estenose da Valva Pulmonar/patologia , Tetralogia de Fallot/cirurgia
9.
Chest ; 77(2): 235-7, 1980 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-7353428

RESUMO

A rare complication of mitral valve replacement with the Hancock bioprosthesis was observed in three patients presenting with prevalent mitral stenosis and normally-sized left ventricular cavity. In the patients, a deep erosion of the left ventricular free wall was present which evolved into cardiac rupture in one of them. The laceration is ascribed to the friction between a prosthetic strut and the myocardium; a disproportion between the "high-profile" device and the left ventricular chamber is suggested to explain this complication, which may be avoided by employing a "low-profile" prosthesis.


Assuntos
Bioprótese/efeitos adversos , Traumatismos Cardíacos/etiologia , Próteses Valvulares Cardíacas/efeitos adversos , Valva Mitral/cirurgia , Feminino , Traumatismos Cardíacos/patologia , Ventrículos do Coração/lesões , Ventrículos do Coração/patologia , Humanos , Pessoa de Meia-Idade
10.
Chest ; 73(3): 427-9, 1978 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-630948

RESUMO

Specific endocarditis involving the aortic and mitral valves in a patient with peripheral rheumatoid arthritis is reported. The patient underwent prosthetic replacement of both valves. Typical rheumatoid nodules were detected histologically in the valvular tissues.


Assuntos
Valva Aórtica/cirurgia , Artrite Reumatoide/cirurgia , Próteses Valvulares Cardíacas , Valva Mitral/transplante , Adulto , Insuficiência da Valva Aórtica/etiologia , Artrite Reumatoide/complicações , Endocardite/etiologia , Feminino , Humanos , Insuficiência da Valva Mitral/etiologia , Transplante Heterólogo
11.
J Thorac Cardiovasc Surg ; 85(1): 140-3, 1983 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-6848881

RESUMO

Cor triatriatum dexter is a rare cardiac malformation, usually diagnosed incidentally at operation or necropsy. We report the case of a 5-month-old infant, severely symptomatic, who underwent correction of a highly obstructive cor triatriatum dexter, with multiple anomalies of the systemic venous return and a large interatrial communication. This appears to be the first case of successful repair of this anomaly during infancy.


Assuntos
Cardiopatias Congênitas/cirurgia , Angiocardiografia , Feminino , Átrios do Coração/anormalidades , Átrios do Coração/cirurgia , Cardiopatias Congênitas/diagnóstico por imagem , Humanos , Lactente
12.
J Thorac Cardiovasc Surg ; 94(2): 200-7, 1987 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-3613618

RESUMO

From August 1981 to July 1984, a total of 97 Hancock pericardial xenografts were implanted in 84 patients, whose ages ranged from 13 to 75 years (mean 55.7 +/- 13). Mitral value replacement was performed in 17, aortic valve replacement in 54, and mitral-aortic valve replacement in 13. Operative survivors were reevaluated from July to September 1985. Cumulative duration of follow-up is 167 patient-years (range 0.5 to 4.1 years), and follow-up is 99% complete. The overall late mortality (at 4 years) is 3.6% +/- 1.4% per patient year, and the actuarial survival rate is 95.4% +/- 3% for aortic valve replacement, 74.7% +/- 16.5% for mitral valve replacement, and 67.1% +/- 20.7% for mitral-aortic valve replacement. One patient sustained a thromboembolic event after mitral valve replacement, but no such complications occurred after aortic or mitral-aortic valve replacement. Actuarial freedom from embolism at 4 years is 100% for aortic and mitral-aortic valve replacement and 93.3% +/- 6.4% for mitral valve replacement. Reoperation for Hancock pericardial xenograft dysfunction was performed in seven patients (five aortic and two mitral-aortic). In the aortic valve replacement group the causes were endocarditis in one, paravalvular leak in one, and primary tissue failure in three; all survived reoperation. The two patients with mitral-aortic valve replacement required reoperation because of primary tissue failure of both Hancock pericardial xenografts, and one died. All values explanted because of primary tissue failure showed commissural tears causing severe prosthetic regurgitation. Calcium deposits were severe in one and mild but unrelated to the cusp rupture in another. Collagen disarray was seen only at the site of the tears, whereas the collagen structure was well preserved in the intact parts of the cusps. Four patients with aortic valve replacement and one with mitral valve replacement show evidence of Hancock pericardial xenograft failure and are awaiting reoperation. The actuarial freedom from primary tissue failure at 4 years is 74.3% +/- 9.8% for aortic and 78.9% +/- 13.2% for mitral Hancock pericardial xenografts. At medium-term follow-up, the Hancock pericardial xenograft has shown poor durability and an extremely high rate of early mechanical failure, especially in the aortic position. These observations suggest the need for a close follow-up of Hancock pericardial xenograft recipients and possibly elective reoperation in asymptomatic patients with clinical evidence of prosthetic failure. These results have led us to discontinue the clinical use of this pericardial xenograft.


Assuntos
Bioprótese , Próteses Valvulares Cardíacas , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/cirurgia , Bioprótese/efeitos adversos , Endocardite/etiologia , Feminino , Próteses Valvulares Cardíacas/efeitos adversos , Próteses Valvulares Cardíacas/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Valva Mitral/cirurgia , Desenho de Prótese , Falha de Prótese , Reoperação , Tromboembolia/etiologia
13.
J Thorac Cardiovasc Surg ; 95(3): 480-5, 1988 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-3343854

RESUMO

We report our experience with 30 children under 15 years of age treated surgically for congenital mitral valve disease from March 1972 to July 1986. Valve reconstruction was possible in 26 patients (87%), whereas in four the valve was replaced with a mechanical prosthesis. Five patients died in the hospital (16.6%), four after conservative operations and one after mitral valve replacement. There was only one late death in a child in chronic congestive heart failure. Three patients, treated conservatively, required valve replacement 2, 22, and 24 months, respectively, after the operation. Follow-up data reveal that 22 of 24 patients are asymptomatic 5 months to 15 years after operation. Two-dimensional echocardiographic studies were performed in 19 patients treated conservatively, 17 of whom are asymptomatic. Eleven of them have no signs of mitral regurgitation or stenosis, six show only mild mitral incompetence, and two have moderate mitral regurgitation or stenosis. Peak pulmonary artery pressure is within normal limits in all. Our results indicate that mitral valve reconstructive procedures for congenital valve dysplasia may be effective and reliable in children despite the frequent severity of valve malformation. Although no major prosthesis-related complications were observed in the present series, we believe that mitral valve repair should always be attempted in the pediatric population to avoid the drawbacks of the currently available prostheses.


Assuntos
Valva Mitral/cirurgia , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Próteses Valvulares Cardíacas/mortalidade , Humanos , Lactente , Masculino , Valva Mitral/anormalidades , Insuficiência da Valva Mitral/congênito , Insuficiência da Valva Mitral/cirurgia , Estenose da Valva Mitral/congênito , Estenose da Valva Mitral/cirurgia , Período Pós-Operatório , Prognóstico
14.
J Thorac Cardiovasc Surg ; 90(1): 29-34, 1985 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-2409406

RESUMO

From 1977 to 1983, 32 consecutive patients, ranging in age from 15 days to 24 years, underwent operations for double-outlet right ventricle. Twenty patients had a palliative operation either to increase (12 cases) or to reduce (eight cases) pulmonary blood flow: Ten of them have subsequently undergone total repair, and in another six correction was delayed because of possible incremental operative risk factors, such as multiple ventricular septal defects or the need for an extracardiac conduit. Four patients with multiple, complex associated intracardiac anomalies are currently considered to have uncorrectable defects. A total of 22 patients underwent correction either primarily (12) or after palliation (10). Intraventricular tunneling was performed in 16 patients with a subaortic ventricular septal defect and in one with a doubly committed ventricular septal defect. Seven of these had pulmonary stenosis and five had reconstruction of the right ventricular outflow by means of a patch (three) or a conduit (two); among this group, five also had enlargement of the ventricular septal defect. In three patients with a subpulmonary defect and in one with a remote ventricular septal defect, all of them without pulmonary stenosis, total repair was achieved by a Senning, a Mustard, or an arterial switch operation. Finally, the only patient with atrioventricular discordance and pulmonary stenosis had insertion of a left ventricle-pulmonary artery conduit. No operative deaths were observed after palliation, but one patient died of intrapulmonary hemorrhage after total repair (4.5%). Major postoperative complications included detachment of the ventricular septal defect patch in one patient and late progression of pulmonary vascular obstructive disease in another. No late deaths have been recorded. Surgical repair of double-outlet right ventricle can be accomplished with gratifying early and late results, the risk of operative death being below 5%. The outcome in patients with subaortic ventricular septal defect appears particularly favorable, despite the extensive intracardiac procedures required for total correction. An early intervention is recommended to prevent development of pulmonary vascular obstructive disease and to avoid massive cardiac hypertrophy and fibrosis, which may cause late rhythm disturbances and impede the intracardiac repair.


Assuntos
Transposição dos Grandes Vasos/cirurgia , Adolescente , Adulto , Prótese Vascular , Criança , Pré-Escolar , Feminino , Seguimentos , Comunicação Interventricular/complicações , Comunicação Interventricular/cirurgia , Humanos , Lactente , Recém-Nascido , Masculino , Métodos , Cuidados Paliativos , Circulação Pulmonar , Estenose da Valva Pulmonar/complicações , Estenose da Valva Pulmonar/cirurgia , Transposição dos Grandes Vasos/fisiopatologia
15.
J Thorac Cardiovasc Surg ; 90(4): 564-9, 1985 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-4046622

RESUMO

Results of reoperation for primary tissue failure of porcine bioprostheses were evaluated in 574 patients discharged from the hospital from 1970 to 1981. A total of 413 had undergone isolated mitral valve replacement and 161 isolated aortic valve replacement. Through March, 1984, 88 patients (15%) had required reoperation: 59 had undergone mitral and 29, aortic valve replacement. Primary tissue failure was the main cause of bioprosthetic dysfunction; it occurred in 64 patients (46 mitral and 18 aortic) at a mean postoperative interval of 93 +/- 4 months (range 34 to 158). During the same period, 11 patients required reoperation for bioprosthetic endocarditis, 11 for paravalvular leak, and two for thrombosis. These patients are not included in this review. Reoperation for primary tissue failure was performed after a mean interval of 72 +/- 6 months (range 38 to 158) for patients with aortic bioprostheses and after 101 +/- 5 months (range 34 to 153) for those with mitral bioprostheses (p less than 0.05). Overall mortality at reoperation was 12.5%: 11% for the mitral group and 16% for the aortic group. In 62 patients (45 mitral and 17 aortic) primary tissue failure was caused by calcification of the cusps, associated with severe fibrous tissue overgrowth in seven. Bioprosthetic failure was caused by an intracuspal hematoma in one patient with mitral valve replacement and by lipid infiltration of the cusps in one patient with aortic valve replacement. Actuarial freedom from bioprosthetic primary tissue failure at 12 years is 61% +/- 5% for the mitral group and 69% +/- 7% for the aortic group. On the basis of our long-term follow-up of patients after mitral or aortic replacement with a porcine bioprosthesis, we conclude: primary tissue failure is the most frequent indication for reoperation in patients with a porcine bioprosthesis; calcification of the cusp tissue is the leading cause of primary tissue failure; reoperation for primary tissue failure may be a major concern, although mortality for elective cases is low; and the limited durability of porcine bioprostheses suggests their use be restricted to selected patients.


Assuntos
Bioprótese/efeitos adversos , Próteses Valvulares Cardíacas/efeitos adversos , Animais , Valva Aórtica/patologia , Valva Aórtica/cirurgia , Calcinose , Humanos , Valva Mitral/patologia , Valva Mitral/cirurgia , Complicações Pós-Operatórias/cirurgia , Falha de Prótese , Reoperação , Suínos
16.
Chest ; 78(1): 109-11, 1980 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-7471829

RESUMO

Clinical and pathologic findings of an unusual case of cardiac malformation are presented. The main features were those of atresia of the right atrioventricular valve associated with two distinct atrioventricular orifices connecting the morphologically left atrium to the underlying morphologically left ventricle. Other distinguishing characteristics were ostium secundum atrial septal defect, normally related great arteries, with the aorta arising from the main ventricular chamber and the pulmonary artery from the anterior and right-sided outlet chamber, and infundibular and valvular pulmonary atresia.


Assuntos
Valva Mitral/anormalidades , Valva Tricúspide/anormalidades , Anormalidades Múltiplas/patologia , Criança , Feminino , Comunicação Interatrial/patologia , Humanos
17.
J Thorac Cardiovasc Surg ; 103(2): 267-75, 1992 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-1735992

RESUMO

From 1978 to 1988, 697 patients with a mean age of 48 +/- 11 years (range 5 to 75 years) received a Sorin tilting-disc prosthesis; 358 had had aortic valve replacement, 247 mitral valve replacement, and 92 mitral and aortic valve replacement. Operative mortality rates were 7.8%, 11.3%, and 10.8%, respectively, in the three groups. Cumulative duration of follow-up is 1650 patient-years for aortic valve replacement (maximum follow-up 11.4 years), 963 patient-years for mitral valve replacement (maximum follow-up 9.9 years) and 328 patient-years for mitral and aortic valve replacement (maximum follow-up 9.4 years). Actuarial survival at 9 years is 72% +/- 4% after mitral valve replacement, 70% +/- 3% after aortic valve replacement, and 50% +/- 12% after mitral and aortic valve replacement, and actuarial freedom from valve-related deaths is 97% +/- 2% after mitral valve replacement, 92% +/- 2% after aortic valve replacement, and 62% +/- 15% after mitral and aortic valve replacement. Thromboembolic events occurred in 21 patients with aortic valve replacement (1.3% +/- 0.2%/pt-yr), in 12 with mitral valve replacement (1.2% +/- 0.3% pt-yr), and in seven with mitral and aortic valve replacement (2.1% +/- 0.8%), with one case of prosthetic thrombosis in each group; actuarial freedom from thromboembolism at 9 years is 92% +/- 3% after mitral valve replacement, 91% +/- 3% after aortic valve replacement, and 74% +/- 16% after mitral and aortic valve replacement. Anticoagulant-related hemorrhage was observed in 15 patients after aortic valve replacement (0.9% +/- 0.2%/pt-yr), in 9 after mitral valve replacement (0.9% +/- 0.3%/pt-yr), and in 6 with mitral and aortic valve replacement (0.9% +/- 0.5%/pt-yr); actuarial freedom from this complication at 9 years is 94% +/- 2% after aortic valve replacement, 91% +/- 4% after mitral valve replacement, and 68% +/- 16% after mitral and aortic valve replacement. Actuarial freedom from reoperation at 9 years is 97% +/- 2% after mitral and aortic valve replacement, 92% +/- 4% after mitral valve replacement, and 89% +/- 3% after aortic valve replacement, with no cases of mechanical fracture. The Sorin valve has shown a satisfactory long-term overall performance, comparable with other mechanical prostheses, and an excellent durability that renders it a reliable heart valve substitute for the mitral and aortic positions.


Assuntos
Próteses Valvulares Cardíacas , Análise Atuarial , Adolescente , Adulto , Idoso , Anticoagulantes/efeitos adversos , Valva Aórtica/cirurgia , Criança , Pré-Escolar , Feminino , Próteses Valvulares Cardíacas/efeitos adversos , Próteses Valvulares Cardíacas/mortalidade , Hemorragia/induzido quimicamente , Humanos , Masculino , Pessoa de Meia-Idade , Valva Mitral/cirurgia , Complicações Pós-Operatórias , Falha de Prótese , Infecções Relacionadas à Prótese , Reoperação , Tromboembolia/etiologia
18.
J Thorac Cardiovasc Surg ; 81(6): 934-42, 1981 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-7230861

RESUMO

A pathological study has been performed on 10 infected Hancock bioprostheses removed from nine patients who died of prosthetic endocarditis. The devices had been in place from 2 to 87 months (average 37.5), the interval between operation and onset of infection averaging 30 months. The offending organisms were Gram negative bacteria in three patients (Klebsiella pneumoniae, Enterobacter cloacae, and Serratia marcescens), Gram positive bacteria in two (Staphylococcus aureus and Streptococcus viridans), and fungi in four (Candida species in three and Aspergillus species in one). Gross examination of the explants revealed in most cases a vegetative endocarditis of one porcine valve leaflets. Septic embolization occurred in five cases owing to the high friability of the vegetations. Prosthetic valve incompetence was the commonest type to dysfunction observed because of tears, perforations, and even complete destruction of the cusps. Prosthetic valve stenosis following obstruction of the valve orifice by infected polypous masses was noted in two cases. Clumps of infective organisms were detected deep in the cusp tissue in most cases on histologic examination. Infection located on the paraprosthetic tissues, associated with ring abscess, valve detachment, and insufficiency, was observed only once. According to the results of investigation, endocarditis on porcine bioprostheses is associated with a better preserved native valvular ring as viewed at reoperation. Therefore surgical intervention appears appropriate in the presence of severe hemodynamic complications after adequate antibiotic treatment. However, infection of these particular prostheses still carries an extremely high mortality. In the present series, this poor outcome might be explained by the frequently associated septic and thromboembolic events.


Assuntos
Bioprótese , Endocardite/etiologia , Próteses Valvulares Cardíacas , Complicações Pós-Operatórias/etiologia , Adulto , Idoso , Valva Aórtica/cirurgia , Candidíase/etiologia , Endocardite Bacteriana/etiologia , Feminino , Humanos , Infecções por Klebsiella/etiologia , Masculino , Pessoa de Meia-Idade , Valva Mitral/cirurgia , Infecções Estafilocócicas/etiologia , Valva Tricúspide/cirurgia
19.
J Thorac Cardiovasc Surg ; 84(5): 738-43, 1982 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-7132412

RESUMO

A 68-year-old man underwent reoperation because of severe incompetence of a mitral valve xenograft, 96 months following implantation. Gross examination of the device showed yellow spots on the cusps, suggesting lipid infiltration, and a torn commissure. Plasmatic cholesterol and lipiprotein levels were normal. X-ray examination of the explants showed no calcific deposits. Histologic and electron microscopic studies disclosed massive accumulation of lipid clefts and droplets, predominantly at the level of the tear; focal loss and detachment of the endothelial lining and scanty porcine fibroblasts and collagen bundles with preserved periodicity were also noted. Primary disruption of porcine valvular bioprostheses without significant calcifications or collagen breakdown is uncommon. In the present case, lipid accumulation was the main determinant of tissue failure.


Assuntos
Bioprótese/efeitos adversos , Próteses Valvulares Cardíacas/efeitos adversos , Lipidoses/patologia , Idoso , Humanos , Lipidoses/etiologia , Masculino , Valva Mitral , Miocárdio/patologia , Complicações Pós-Operatórias
20.
J Thorac Cardiovasc Surg ; 99(5): 838-45, 1990 May.
Artigo em Inglês | MEDLINE | ID: mdl-2329821

RESUMO

Because little information is available regarding the clinical performance of the Hancock porcine bioprosthesis (Johnson & Johnson Cardiovascular, King of Prussia, Pa.) implanted in the tricuspid position, we reviewed the long-term follow-up of patients who had tricuspid valve replacement with this device. From March 1970 to December 1983, 45 patients had tricuspid valve replacement, either isolated (seven patients) or combined with replacement of other valves (38 patients) by means of a standard, glutaraldehyde-preserved Hancock porcine bioprosthesis. Follow-up ranged from 0.2 to 14.7 years (mean, 7.6 +/- 3.6 years) and was complete. The late mortality rate was 6.6% +/- 1.6%/pt-yr and the actuarial survival rate at 14 years was 23% +/- 9%. Reoperation because of structural deterioration of the tricuspid, the mitral, or both bioprostheses was performed in nine patients (3.7% +/- 1.2%/pt-yr) from 40 to 177 months (mean, 112 +/- 43 months) and resulted in no deaths. Actuarial freedom from structural deterioration of a Hancock tricuspid porcine bioprosthesis at 14 years is 68% +/- 13%. Morphologic examination of explanted porcine bioprostheses showed that those implanted in the tricuspid position had lower degrees of calcification and less severe structural changes than those simultaneously explanted from the mitral position. We conclude that the Hancock porcine bioprosthesis has an acceptable long-term durability and satisfactory performance after tricuspid valve replacement, and we continue to favor its use in the tricuspid position even in association with mechanical prostheses in the left side of the heart.


Assuntos
Bioprótese , Próteses Valvulares Cardíacas , Adolescente , Adulto , Idoso , Bioprótese/efeitos adversos , Causas de Morte , Criança , Feminino , Seguimentos , Próteses Valvulares Cardíacas/efeitos adversos , Próteses Valvulares Cardíacas/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Falha de Prótese , Reoperação , Taxa de Sobrevida , Valva Tricúspide
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