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1.
Rev Med Liege ; 75(11): 697-698, 2020 Nov.
Artigo em Francês | MEDLINE | ID: mdl-33155440

RESUMO

Coronary aneurysm has an incidence of 1,1 to 4,9 % in patients undergoing a coronary angiography. Many etiologies may be accused, atherosclerosis is associated in up to 50 % of cases. We report the case of a 76-year-old patient with a large coronary aneurysm.


L'anévrisme coronarien a une incidence de 1,1 à 4,9 % chez les patients bénéficiant d'une coronarographie. De nombreuses étiologies peuvent être incriminées, l'athérosclérose y est associée dans 50 % des cas. Nous rapportons ici le cas d'un patient de 76 ans présentant un volumineux anévrisme coronarien.


Assuntos
Aterosclerose , Aneurisma Coronário , Idoso , Aneurisma Coronário/diagnóstico por imagem , Aneurisma Coronário/etiologia , Angiografia Coronária , Humanos
2.
Eur J Vasc Endovasc Surg ; 42(6): 766-74, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21945512

RESUMO

OBJECTIVES: To compare outcomes after carotid endarterectomy (CEA) with saphenous vein patch closure (SV), with cervical vein (external jugular and common facial) patch closure (CV). DESIGN: A total of 322 cases of CEA was achieved consecutively by using venous patch angioplasty. Propensity scores were calculated followed by a one-to-one basis case-matching. MATERIALS: This resulted into 90 SV and 90 CV matched cases. METHODS: The primary endpoint was the incidence of ipsilateral stroke and transient ischaemic attack at any time during follow-up. RESULTS: Ten-year freedom from stroke was 94.1% ± 3.5% for the SV group and 90.5% ± 4.2% for the CV group (log rank P = 0.230). Ten-year freedom from ipsilateral neurological events (stroke and transient ischaemic attack) was 93.5% ± 3.3% for SV group and 92.4% ± 3.0% for the CV group (log rank P = 0.403). Ten-year freedom from ≥75% stenosis/occlusion was 93.1 ± 4.8% for the SV group and 89.9 ± 6.0% for the CV group (log rank P = 0.481). CONCLUSIONS: CV is a good alternative to SV patching, particularly when the SV needs to be preserved for further use or is unsuitable.


Assuntos
Implante de Prótese Vascular , Endarterectomia das Carótidas/métodos , Veias/transplante , Idoso , Valva Aórtica/cirurgia , Estudos de Casos e Controles , Comorbidade , Ponte de Artéria Coronária , Feminino , Seguimentos , Implante de Prótese de Valva Cardíaca , Humanos , Ataque Isquêmico Transitório/etiologia , Ataque Isquêmico Transitório/mortalidade , Masculino , Pessoa de Meia-Idade , Exame Neurológico , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/mortalidade , Estudos Prospectivos , Acidente Vascular Cerebral/etiologia , Acidente Vascular Cerebral/mortalidade
3.
JBR-BTR ; 88(4): 178-83, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16176074

RESUMO

This multicentre retrospective study describes the variation of therapeutic options, treatment outcomes and costs for treating infrarenal arterial stenoses as observed in daily practice in 1997-99 in seven Belgian hospitals. Data were obtained from clinical record review and from the sickness fund claims database, and included preoperative functional state, presence of acute ischaemia, diabetes and polyvascular disease, state of the lower-leg run-off arteries, anatomical site and type of lesion, type of treatment, result at 30 days and up to 4 years. A total of 442 episodes were studied, but most analyses dealt with a subgroup of 240 lesions in the common iliac up to the superficial femoral artery. The proportion of surgical treatments (as compared to an endovascular or mixed approach) varied from 15% to 81% between the hospitals. In univariate survival analysis, relapse or failure rates at 4 years ranged from 5% for the common iliac artery to 35% for the superficial femoral artery. Polyvascular disease, a poor run-off, multiple stenoses and chronic occlusion were significant risk factors; age and diabetes were not. In the multivariate (stratified Cox regression) analysis, only a location in the superficial femoral artery and a poor preoperative clinical stage were significant risk factors, but type of therapeutic approach was not. The total average cost of treatment was 5300 Euro, of which 15% was contributed by the patient. Surgery was associated with longer stays (median at 12 days) than endovascular treatments (median 2 d), and was 1.9 times more expensive. In conclusion, the results of the present study suggest that a multidisciplinary approach, orienting the patient to the most appropriate therapeutic pathway could increase both the quality and the cost-effectiveness of the care. In many clinical situations, the endovascular approach appears to offer similar long-term results as surgery, but at a substantially lower cost, both for the patient and for society, especially when performed in a (semi-)ambulatory radiology setting.


Assuntos
Arteriopatias Oclusivas/terapia , Extremidade Inferior/irrigação sanguínea , Doenças Vasculares Periféricas/terapia , Padrões de Prática Médica/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Arteriopatias Oclusivas/cirurgia , Bélgica , Constrição Patológica/cirurgia , Constrição Patológica/terapia , Complicações do Diabetes , Artéria Femoral/patologia , Seguimentos , Custos de Cuidados de Saúde , Humanos , Artéria Ilíaca/patologia , Isquemia/complicações , Tempo de Internação , Pessoa de Meia-Idade , Doenças Vasculares Periféricas/cirurgia , Recidiva , Fluxo Sanguíneo Regional/fisiologia , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento
4.
Acta Chir Belg ; 105(2): 148-55, 2005 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15906905

RESUMO

This multicentre retrospective study describes the variation of therapeutic options, treatment outcomes and costs for treating subrenal arterial stenoses as observed in daily practice in 1997-99 in seven Belgian hospitals. Data were obtained from clinical record review and from the sickness fund claims database, and included preoperative functional state, presence of acute ischaemia, diabetes and polyvascular disease, state of the lower-leg run-off arteries, anatomical site and type of lesion, type of treatment, result at 30 days and up to 4 years. A total of 442 episodes were studied, but most analyses dealt with a subgroup of 240 lesions in the common iliac up to the superficial femoral artery. The proportion of surgical treatments (as compared to an endovascular or mixed approach) varied from 15% to 81% between the hospitals. In univariate patency analysis, relapse or failure rates at 4 years ranged from 5% for the common iliac artery to 35% for the superficial femoral artery. Polyvascular disease, a poor run-off, multiple stenoses and chronic occlusion were significant risk factors; age and diabetes were not. In the multivariate (stratified Cox regression) analysis, only a location in the superficial femoral artery and a poor preoperative clinical stage were significant risk factors, but type of therapeutic approach was not. The total average cost of treatment was 5,300 Euros, of which 15% was contributed by the patient. Surgery was associated with longer stays (median at 12 days) than endovascular treatments (median 2 days), and was 1.9 times more expensive. In conclusion, the results of the present study suggest that a multidisciplinary approach, orienting the patient to the most appropriate therapeutic pathway, could increase both the quality and the cost-effectiveness of the care.


Assuntos
Angioplastia/estatística & dados numéricos , Arteriopatias Oclusivas/cirurgia , Custos Hospitalares/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Procedimentos Cirúrgicos Vasculares/estatística & dados numéricos , Adulto , Idoso , Idoso de 80 Anos ou mais , Angiografia/estatística & dados numéricos , Angioplastia/economia , Angioplastia/normas , Arteriopatias Oclusivas/diagnóstico por imagem , Arteriopatias Oclusivas/economia , Bélgica , Análise Custo-Benefício , Feminino , Hospitais Gerais/estatística & dados numéricos , Hospitais Universitários/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Vasculares Periféricas/diagnóstico por imagem , Doenças Vasculares Periféricas/economia , Doenças Vasculares Periféricas/cirurgia , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Resultado do Tratamento , Procedimentos Cirúrgicos Vasculares/economia , Procedimentos Cirúrgicos Vasculares/normas
5.
Cardiovasc Surg ; 10(6): 615-7, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12453697

RESUMO

We describe two patients who underwent coronary artery bypass grafting complicated by postoperative hypoxemia due to a patent foramen ovale with right-to-left shunting. We discuss different hypotheses to explain the shunt: decreased right ventricular compliance, right atrial geometric changes due to septal distension or ischemia, exceeding filling pressure and localised haemorragic pericardial tamponade and low atrial pressure when correcting aortic stenosis. We emphasize the close interplay of pericardectomy and the four cardiac chambers including the distortion of the heart axis. The contrast echo produced by microbubbles of air is the safest and the most accurate procedure to detect the shunt. The two patients progressed positively with an extracorporeal circulation of short duration and without complications linked to the intervention. We conclude that postoperative unexplained hypoxemia must always exclude diagnosis of right-to-left shunting due to a patent foramen ovale (PFO).


Assuntos
Ponte de Artéria Coronária/efeitos adversos , Comunicação Interatrial/complicações , Hipóxia/etiologia , Idoso , Feminino , Comunicação Interatrial/diagnóstico , Humanos , Masculino
6.
Acta Chir Belg ; 101(3): 130-4, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11501388

RESUMO

OBJECTIVE: The aim of this study was to evaluate initial results in beating heart coronary artery bypass grafting performed on patients with multivessel disease, using suction-based tissue stabilizers. METHODS: Forty patients (mean age 65.5 years, range 39-83) underwent beating heart coronary bypass by median sternotomy, with the use of the Octopus 1 (n = 27) and Octopus 2 (n = 13) devices. Twenty patients had unstable angina, four had pulmonary oedema, and four required preoperative intra-aortic balloon counterpulsation. Five interventions were repeat procedures. Mean ejection fraction was 54.4%(range 20-82%). Eighteen patients had triple-vessel disease, 18 patients had double-vessel disease and > 50% left main stem stenosis was present in six patients (isolated or in association). The average number of distal anastomoses was 2.5 (range 1-5, total 101). A mean of 1.5 (range 1-3) anastomoses was achieved with arterial grafts (45 mammary and 12 gastroepiploic arteries). RESULTS: Immediate graft patency was evaluated by Doppler flowmeter and five anastomoses were successfully corrected, based on an occlusion pattern. The perioperative myocardial infarction rate was zero. Transient episodes of supraventricular arrhythmias were detected in 19 patients. The administration of dobutamine at an inotropic concentration > 5 gamma-1 kg-1 min-1 was required in one patient. There were two in-hospital deaths (one non-cardiac-related). Overall survival and cardiac event-free rate at 20 months were 92.4% +/- 4.2% and 81.8% +/- 11.6%, respectively. CONCLUSIONS: Satisfactory results can be achieved in multivessel disease high-risk patients with beating heart coronary bypass surgery.


Assuntos
Ponte de Artéria Coronária/instrumentação , Doença das Coronárias/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Transfusão de Sangue , Ponte Cardiopulmonar , Ponte de Artéria Coronária/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Fatores de Risco , Grau de Desobstrução Vascular
7.
Cardiovasc Surg ; 9(5): 463-8, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11489650

RESUMO

PURPOSE: This retrospective study evaluates the long-term clinical outcome and the survival of 600 consecutive carotid endarterectomies performed with a temporary shunt. All arteriotomies were closed by vein patch angioplasty. MATERIALS AND METHODS: Between November 1989 and November 1998, 600 isolated carotid endarterectomies (CEA) were performed in 540 patients by a uniform surgical technique at the University Clinic of Mont-Godinne. An intraluminal shunt and patch closure were systematically used. The mean age was 68 yr (ranging from 41 to 91 yr), 400 patients were men. The risk factors included hypertension in 73%, smoking history in 60%, coronary artery disease in 51% and hyperlipidemia in 35%. The indications were asymptomatic stenosis in 47%, transient ischemic attack in 40%, vertebrobasilar symptoms in 7% and stroke in 6%. EARLY RESULTS: The combined 30-day stroke and death rate was 0.9%. There were four deaths. The stroke and TIAs rates were 0.2% and 1.5% respectively. The incidence of early carotid occlusion was 0.5%. Cranial or cervical nerve dysfunction was identified in 6.3%. LATE RESULTS: The median follow-up was 49 months with a range of 2-124 months. Cumulative survival rates at 5 and 10 yr were 92+/-1% and 89+/-2% respectively. Thirty-two patients died during long-term follow-up; the death was stroke-related in only three patients. CONCLUSION: Carotid endarterectomy using an intraluminal shunt and vein patch closure is a safe and effective procedure associated with low morbidity and mortality rates at short and long-term follow-up.


Assuntos
Angioplastia/mortalidade , Endarterectomia das Carótidas/mortalidade , Técnicas de Patch-Clamp/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Estenose das Carótidas/complicações , Estenose das Carótidas/diagnóstico por imagem , Estenose das Carótidas/cirurgia , Feminino , Seguimentos , Humanos , Ataque Isquêmico Transitório/epidemiologia , Ataque Isquêmico Transitório/etiologia , Masculino , Pessoa de Meia-Idade , Assistência Perioperatória , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Acidente Vascular Cerebral/etiologia , Análise de Sobrevida , Tempo , Resultado do Tratamento , Ultrassonografia Doppler Dupla
8.
J Am Coll Cardiol ; 35(6): 1411-5, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10807440

RESUMO

OBJECTIVES: The present study was aimed to evaluate the efficacy of a specific algorithm with continuous atrial dynamic overdrive pacing to prevent atrial fibrillation (AF) after coronary artery bypass graft (CABG) surgery. BACKGROUND: Atrial fibrillation occurs in 30% to 40% of patients after cardiac surgery with a peak incidence on the second day. It still represents a challenge for postoperative prevention and treatment and may have medical and cost implications. METHODS: Ninety-six consecutive patients undergoing CABG for severe coronary artery disease and in sinus rhythm without antiarrhythmic therapy on the second postoperative day were randomized to have or not 24 h of atrial pacing through temporary epicardial wires using a permanent dynamic overdrive algorithm. Holter ECGs recorded the same day in both groups were analyzed to detect AF occurrence. RESULTS: No difference was observed in baseline data between the two study groups, particularly for age, male gender, history of AF, ventricular function, severity of coronary artery disease, preoperative beta-adrenergic blocking agent therapy or P-wave duration. The incidence of AF was significantly lower (p = 0.036) in the paced group (10%) compared with control subjects (27%). Multivariate analysis showed AF incidence to increase with age (p = 0.051) but not in patients with pacing (p = 0.078). It decreased with a better left ventricular ejection fraction only in conjunction with atrial pacing (p = 0.018). CONCLUSIONS: We conclude that continuous atrial pacing with an algorithm for dynamic overdrive reduces significantly incidence of AF the second day after CABG surgery, particularly in patients with preserved left ventricular function.


Assuntos
Fibrilação Atrial/prevenção & controle , Estimulação Cardíaca Artificial , Ponte de Artéria Coronária , Complicações Pós-Operatórias/prevenção & controle , Adulto , Idoso , Idoso de 80 Anos ou mais , Algoritmos , Eletrocardiografia Ambulatorial , Feminino , Hemodinâmica/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento , Função Ventricular Esquerda/fisiologia
9.
Heart ; 82(3): 336-42, 1999 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-10455085

RESUMO

OBJECTIVE: To compare the mechanisms by which arterial and venous grafts increase their flow during pacing induced tachycardia, early and later after coronary bypass surgery. DESIGN: 43 grafts (13 epigastric artery, 15 mammary artery, 15 saphenous vein) evaluated early (9 (3) days (mean (SD)) after bypass surgery were compared with 41 other grafts (15 epigastric, 11 mammary, 15 saphenous vein) evaluated later after surgery (mean 23 months, range 6 to 168 months) by quantitative angiography and intravascular Doppler velocity analysis during atrial pacing. Controls were 17 normal coronary arteries. RESULTS: Baseline graft flow tended to be lower later after surgery than early (41 (16) v 45 (21) ml/min, NS). Blood flow increased during pacing by 30 (16)% early after surgery, less than later after surgery (+46 (18)%, p < 0.001) and less than in normal coronary arteries (+54 (27)%, p < 0.001 v early grafts; NS v late grafts). There was no difference between venous and arterial grafts. No significant vasodilatation was observed during pacing early after surgery in arterial and venous grafts. Later after surgery, significant vasodilatation was observed only in arterial grafts (mammary and epigastric grafts), from 2.41 (0.37) to 2.53 (0. 41) mm (+5.1% v basal, p < 0.001). Early after surgery and in venous grafts later after surgery, the increase in flow was entirely due to an increase in velocity. In later arterial grafts, the relative contribution of the increase in velocity to the increase in flow during pacing was lower in arterial grafts (70 (22)%) than in venous grafts (102 (11)%, p < 0.001) and similar to normal coronary arteries (68 (28)%). CONCLUSIONS: Early and later after surgery, arterial grafts and venous grafts both increase their flow similarly during pacing. Early arterial grafts and venous grafts increase their flow only through an increase in velocity. Later after surgery, arterial grafts act as more physiological conduits and increase their flow in the same way as normal coronary arteries, through an increase in velocity and calibre mediated by the endothelium.


Assuntos
Adaptação Fisiológica , Ponte de Artéria Coronária , Circulação Coronária , Idoso , Velocidade do Fluxo Sanguíneo , Estimulação Cardíaca Artificial , Endotélio Vascular/fisiopatologia , Artérias Epigástricas/transplante , Feminino , Seguimentos , Hemodinâmica , Humanos , Dinitrato de Isossorbida , Masculino , Artéria Torácica Interna/transplante , Pessoa de Meia-Idade , Período Pós-Operatório , Veia Safena/transplante , Vasodilatação , Vasodilatadores
10.
J Thorac Cardiovasc Surg ; 118(2): 330-8, 1999 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-10425007

RESUMO

OBJECTIVE: Blood flow characteristics of right gastroepiploic artery and saphenous vein conduits were compared during bypass surgery. METHODS: This study is based on a consecutive series of 97 patients undergoing a bypass graft to the right coronary artery, posterior descending artery, or posterolateral branch using either a pediculated right gastroepiploic artery (n = 52) or a saphenous vein (n = 45) bypass graft. Flows and velocity profiles were measured with an 8-MHz pulsed-wave Doppler ultrasound flowmeter. Thorough flow measurements were made (1) after cessation of cardiopulmonary bypass and (2) before chest closure. RESULTS: At the end of cardiopulmonary bypass, flow in the right gastroepiploic artery (59. 0 +/- 6.7 mL/min) did not differ (P =.08) from flow in the saphenous vein (46.1 +/- 2.7 mL/min). Mean trace velocity was 11.9 +/- 0.7 cm/s in the right gastroepiploic artery and 11.6 +/- 0.8 cm/s in the saphenous vein (P =.80), but peak systolic velocity was 29.4 +/- 1.2 cm/s for the right gastroepiploic artery and 23.1 +/- 1.3 cm/s for the saphenous vein (P <.001). Likewise, before chest closure, flow was 57.1 +/- 4.7 mL/min in the right gastroepiploic artery and 46.5 +/- 4.0 mL/min in the saphenous vein (P =.10), mean velocity was 12. 9 +/- 0.7 and 11.6 +/- 0.8 cm/s, respectively (P = .22), and systolic peak velocity was 30.0 +/- 1.2 and 22.3 +/- 1.2 cm/s, respectively (P < .001). CONCLUSIONS: There were no flow differences between right gastroepiploic artery and saphenous vein grafts implanted into the same coronary bed in comparable groups of patients. Waveform shape of the right gastroepiploic artery grafts was characterized by a wider spectral dispersion resulting in a higher maximal frequency.


Assuntos
Vasos Coronários/cirurgia , Hemodinâmica/fisiologia , Monitorização Intraoperatória , Veia Safena/transplante , Artéria Esplênica/transplante , Idoso , Implante de Prótese Vascular , Ponte Cardiopulmonar , Doença das Coronárias/cirurgia , Vasos Coronários/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Monitorização Intraoperatória/métodos , Reologia , Veia Safena/diagnóstico por imagem , Veia Safena/fisiologia , Artéria Esplênica/diagnóstico por imagem , Artéria Esplênica/fisiologia , Estômago/irrigação sanguínea , Ultrassonografia Doppler de Pulso
11.
Ann Thorac Surg ; 67(5): 1355-8, 1999 May.
Artigo em Inglês | MEDLINE | ID: mdl-10355411

RESUMO

BACKGROUND: The Ross operation, although more demanding, is now widely accepted as an alternative solution for aortic valve replacement in young adults and children. A review of our experience to assess the mid-term results with the Ross operation is presented. METHODS: From June 1991 through October 1997, 80 patients (mean age, 31 years) underwent aortic valve or root replacement with pulmonary autografts. Indications for operation were predominant aortic stenosis in 38 patients, aortic incompetence in 42 patients including endocarditis in 3 patients. Congenital lesions were present in 57 patients, either at pediatric (27 patients) or adult age (30 patients). Transthoracic echocardiography was performed preoperatively in all patients and serially after operation with the aims of measuring aortic and pulmonary annuli, evaluating transvalvular gradients and incompetence, and studying the left ventricular function. Intraoperative transesophageal echocardiography was used routinely. Complete root replacement was performed in 52 patients, intraluminal cylinder in 25 patients, and subcoronary implantation in 3 patients. RESULTS: One patient died in the early postoperative period (1.2%). There was no late death. The actuarial survival at 5 years was 98%+/-1%. All survivors remained in New York Heart Association functional class I and were free of complications and medications. No gradient or significant aortic incompetence could be demonstrated in 73 patients. One patient developed late aortic incompetence grade 3 and reoperation is considered. On the pulmonary outflow tract, 6 patients had gradients between 20 and 40 mm Hg as calculated on echocardiography. CONCLUSIONS: The pulmonary autograft gives excellent mid-term results with low mortality and no morbidity. It completely relieves the abnormal loading conditions of the left ventricle, resulting in a complete recovery of left ventricular function in most patients.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Valva Pulmonar/transplante , Adolescente , Adulto , Insuficiência da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/mortalidade , Procedimentos Cirúrgicos Cardíacos , Criança , Pré-Escolar , Humanos , Lactente , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
12.
Eur J Cardiothorac Surg ; 15(3): 240-6, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10333016

RESUMO

OBJECTIVE: The patency of a pedicled right gastroepiploic artery (RGEA) graft can be compromised by intraoperative twists, kinks or spasms. Therefore, a systematic flow assessment was made in RGEA grafts and was compared with similar measurements made in other types of bypass conduits. METHODS: Intraoperative pulsed Doppler flowmeter measurements obtained in a series of 556 consecutive patients undergoing at least one coronary bypass grafting onto the right coronary system were studied. Eighty-five RGEA grafts were compared with 1427 bypass grafts implanted in the same group of patients and consisted of the following conduits: 442 left internal mammary (LIMA), 149 right internal mammary (RIMA), 831 greater saphenous vein (GSV) and five inferior epigastric (EPIG) grafts. Sequential grafts were excluded from the analysis. RESULTS: Flow measurements and Doppler waveforms were abnormal and required graft repositioning, and the addition of a distal graft or intragraft papaverine injection (only in GSVs) in 29 cases (2.0% of all grafts). These graft corrections were necessary in 5.9% RGEAs, 3.4% LIMAs, 2.0% RIMAs, and 0.7% GSVs (P < 0.001). The relative risk for graft correction was eight times higher for RGEAs than for GSVs (P = 0.002). Flow increased from 8 +/- 2 to 54 +/- 5 ml/min (P < 0.0001). Flow data were significantly influenced by the type of run-off bed (P < 0.001), the measurements obtained in grafts implanted onto the right coronary artery and the left anterior descending artery being superior. Flows in RGEAs, however, were comparable with values obtained in other grafts implanted onto the same recipient coronary artery. CONCLUSIONS: A significantly higher incidence of graft malpositioning caused inadequate flows in RGEAs. However, normal flow values could be restored simply by assigning a better graft orientation under pulsed Doppler flowmeter control. Overall flow capacity of the RGEA did not differ from values obtained in other arterial and venous grafts implanted onto the same recipient arteries.


Assuntos
Ponte de Artéria Coronária/métodos , Ecocardiografia Doppler de Pulso , Estômago/irrigação sanguínea , Grau de Desobstrução Vascular , Idoso , Artérias/transplante , Doença das Coronárias/diagnóstico por imagem , Doença das Coronárias/fisiopatologia , Doença das Coronárias/cirurgia , Feminino , Humanos , Período Intraoperatório , Masculino , Pessoa de Meia-Idade , Fluxo Sanguíneo Regional , Resultado do Tratamento
13.
Ann Thorac Surg ; 66(4): 1282-7; discussion 1288, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9800821

RESUMO

BACKGROUND: This study was designed to assess the value of hemodynamic measurements taken intraoperatively in predicting midterm patency of coronary bypass grafts. METHODS: A pulsed Doppler flowmeter was routinely used during operation to determine the hemodynamic parameters of coronary bypass grafts. During a 7-year period, 85 patients underwent angiographic evaluation. As a result, a thorough hemodynamic assessment of 214 grafts (89 arterial and 125 venous) at initial operation was available for analysis. RESULTS: The overall patency rate was 88.3%. The mean flow measured intraoperatively in 168 intact grafts was 60+/-3 mL/min (range, 9 to 230 mL/min), and the resistance was 1.8+/-0.1 peripheral resistance units (range, 0.3 to 9.0 peripheral resistance units). The mean flow was 36+/-5 mL/min (range, 2 to 107 mL/min), and the resistance was 5.9+/-2.0 peripheral resistance units (range, 0.6 to 46.0 peripheral resistance units) in 25 grafts found occluded at angiographic evaluation. Multivariate analysis identified three independent variables associated with a reduced patency rate: increased resistance as measured in the graft (p = 0.012), increasing interval of control angiography (p = 0.006), and preoperative cardiogenic shock (p = 0.040). CONCLUSIONS: The prognosis for midterm patency of aortocoronary bypass grafts depends on the intraoperative hemodynamic status.


Assuntos
Ponte de Artéria Coronária , Circulação Coronária/fisiologia , Oclusão de Enxerto Vascular/epidemiologia , Velocidade do Fluxo Sanguíneo/fisiologia , Angiografia Coronária , Feminino , Oclusão de Enxerto Vascular/diagnóstico , Humanos , Cuidados Intraoperatórios , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Ultrassonografia Doppler , Grau de Desobstrução Vascular/fisiologia
14.
Cardiovasc Surg ; 6(2): 126-32, 1998 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-9610824

RESUMO

BACKGROUND: The objective of this study was to analyse the impact of acute surgery for native aortic valve endocarditis and its influence on the long-term prognosis after surgery. METHODS: A total of 161 patients underwent aortic valve replacement for native active aortic valve endocarditis (NAAVE) during a 29-year period, from 1967 to 1995 (age range: 10 to 72 years; mean 48 +/- 12). The main indication for surgery was progressive congestive heart failure (76%). Other indications were untreatable sepsis (27%), peripheral or central emboli (12%) and, from 1978, echocardiographic evidence of friable, pedunculated vegetations (3%). Streptococcal and staphylococcal infections predominated. Concomitant procedures were performed in 27% of the patients, including mitral and tricuspid valve surgery and coronary bypass procedures. RESULTS: Operative mortality was 8% in the majority of cases caused by heart failure or multi-organ failure. Multivariate logistic regression analysis identified NYHA class IV to be an independent predictor for postoperative death. Long-term survival for discharged patients was 75% at 10 years and 58% at 15 years, with a mortality rate of 3.6%/patient/year. Cox regression analysis identified the year of operation, trivalvular endocarditis and staphylococcal infection as independent predictors of survival. At 10 and 15 years after aortic valve replacement, 91% and 84% of the patients, respectively, were free of recurrent endocarditis. The presence of an abscess cavity at first operation was found to be predictive of recurrent endocarditis. CONCLUSIONS: Valve replacement for NAAVE offers a good chance for a cure and satisfactory long-term survival. Improvements in pre- and per-operative management of the very ill patient, and the use of allograft valves are likely to further improve long-term results. Finally, the presence of staphylococcal endocarditis requires long-term postoperative antibiotic therapy.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Endocardite Bacteriana/complicações , Implante de Prótese de Valva Cardíaca/mortalidade , Infecções Estafilocócicas/complicações , Infecções Estreptocócicas/complicações , Adolescente , Adulto , Idoso , Valva Aórtica , Insuficiência da Valva Aórtica/etiologia , Bélgica/epidemiologia , Criança , Endocardite Bacteriana/microbiologia , Feminino , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/cirurgia , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Infecções Estafilocócicas/diagnóstico , Infecções Estreptocócicas/diagnóstico , Taxa de Sobrevida
15.
J Am Soc Echocardiogr ; 11(5): 403-8, 1998 May.
Artigo em Inglês | MEDLINE | ID: mdl-9619610

RESUMO

A noninvasive method to assess left internal mammary artery (LIMA) patency and function would be useful because this vessel is frequently used for revascularization of the left anterior descending coronary artery. The purpose of this study was to assess the feasibility of measuring changes in LIMA velocities by transcutaneous Doppler during dipyridamole-induced vasodilation. Twenty-five patients with a LIMA graft anastomosed to the left anterior descending coronary artery were studied at least 1 month after surgery by the use of a 5 MHz transducer placed in the left supraclavicular fossa. Doppler velocity parameters were measured at baseline and after intravenous administration of dipyridamole. Dipyridamole increased mean velocity by 127% +/- 54% (p < 0.001), systolodiastolic velocity time integral by 89% +/- 31% (p < 0.001), and diastolic-to-systolic peak velocity ratio from 0.7 +/- 0.3 to 1.2 +/- 0.4 (p < 0.001). The dipyridamole-to-baseline mean velocity ratio was 2.3 +/- 0.5. We conclude that it is possible to measure dipyridamole-induced changes in LIMA flow velocities and thus obtain an index of LIMA blood velocity reserve by transcutaneous Doppler echocardiography.


Assuntos
Ecocardiografia Doppler/métodos , Oclusão de Enxerto Vascular/diagnóstico por imagem , Anastomose de Artéria Torácica Interna-Coronária , Adulto , Idoso , Velocidade do Fluxo Sanguíneo/efeitos dos fármacos , Velocidade do Fluxo Sanguíneo/fisiologia , Circulação Coronária/fisiologia , Dipiridamol , Estudos de Viabilidade , Feminino , Oclusão de Enxerto Vascular/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Grau de Desobstrução Vascular/fisiologia , Vasodilatadores
16.
Acta Chir Belg ; 98(6): 250-4, 1998 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-9922812

RESUMO

A 72-year-old woman presented with a recurrent proximal aortic true aneurysm 7 years after an abdominal aortic aneurysmectomy. It was complicated by a contained rupture into the right psoas. The repair was successfully realized through a thoraco-abdominal approach. A tube graft was interposed between the proximal aorta and the old graft, associated with the reimplantation of the renal arteries. A systemic follow-up of abdominal aortic grafts by reliable diagnostic methods is advocated to provide a timely and appropriate surgical treatment of this major complication.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Implante de Prótese Vascular , Complicações Pós-Operatórias , Idoso , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Evolução Fatal , Feminino , Humanos , Recidiva , Tomografia Computadorizada por Raios X
17.
Ann Thorac Surg ; 63(3): 689-96, 1997 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-9066385

RESUMO

BACKGROUND: A method of cold blood cardioplegia (CBCP) delivered continuously and in a retrograde manner was compared with methods differing only by their rate (intermittent) or way (antegrade) of administration. METHODS: This study comprises 298 consecutive patients undergoing isolated coronary artery bypass grafting procedures performed by the same surgeon from 1992 to 1995. Three-vessel disease characterized 58.8% of the cases, and the left ventricular ejection fraction was less than 0.40 in 22.8%. In group I (n = 100), CBCP was administered in an antegrade and intermittent fashion; in group II (n = 87), CBCP was given in a retrograde and intermittent manner; in group III (n = 111), CBCP delivery was retrograde and continuous. RESULTS: The incidence of major cardiac adverse outcome (death or need for intraaortic balloon counterpulsation) was 7.0% in group I, 8.0% in group II, and 0.9% in group III (p = 0.040). Repeated-measures analysis of hemodynamic indices showed a marked superiority of continuous retrograde compared with antegrade intermittent blood cardioplegia regarding left ventricular stroke work index (p < 10(-4)) and compared with both methods of intermittent CBCP regarding right ventricular stroke work index (p < 10(-5)). CONCLUSIONS: The use of continuous CBCP resulted in a significant reduction in major cardiac events, better left ventricular performance, and a marked improvement of right ventricular function in comparison with similar solutions of blood cardioplegia administered intermittently, independent of their way of delivery.


Assuntos
Ponte de Artéria Coronária , Parada Cardíaca Induzida/métodos , Traumatismo por Reperfusão Miocárdica/prevenção & controle , Idoso , Sangue , Estudos de Casos e Controles , Ensaios Enzimáticos Clínicos , Temperatura Baixa , Feminino , Humanos , Incidência , Balão Intra-Aórtico , Masculino , Traumatismo por Reperfusão Miocárdica/diagnóstico , Traumatismo por Reperfusão Miocárdica/fisiopatologia , Fatores de Tempo , Resultado do Tratamento , Função Ventricular/fisiologia
18.
Acta Chir Belg ; 97(1): 39-43, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-9079144

RESUMO

A case of atherosclerotic abdominal aortic aneurysm, complicated by aortoenteric fistulizations and infected by Escherichia coli, is presented. Chronic contained rupture resulted in the formation of a huge left psoas abscess which was responsible for the symptoms. No similar case has been reported in the literature. Resection and extra-anatomic vascular reconstruction were curative.


Assuntos
Aneurisma Infectado/complicações , Aneurisma da Aorta Abdominal/complicações , Duodenopatias/complicações , Fístula/complicações , Fístula Intestinal/complicações , Abscesso do Psoas/complicações , Doenças do Colo Sigmoide/complicações , Idoso , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Aneurisma da Aorta Abdominal/cirurgia , Doenças da Aorta/complicações , Humanos , Masculino , Tomografia Computadorizada por Raios X
20.
Acta Clin Belg ; 52(3): 176-81, 1997.
Artigo em Francês | MEDLINE | ID: mdl-9412120

RESUMO

The authors report the cases of two patients suffering from ascites attributed for several years to a non pericarditic aetiology. The first patient presented with a diagnosis of right cardiac failure secondary to a right myocardial infarction. Cardiac catheterisation, magnetic resonance imaging and transoesophageal echocardiogram allowed to establish the diagnosis. In the second case, ascites was attributed to cirrhosis. Presence of pericardial calcifications, visible on a chest X-Ray led to suspect constrictive pericarditis. In both cases, ascites contained a high protein level. A pericardectomy allowed a favourable outcome in both cases. Thus, a diagnosis of constrictive pericarditis must be evoked in face of ascites of unclear origin and a normal cardiac size.


Assuntos
Ascite/etiologia , Pericardite Constritiva/complicações , Idoso , Ascite/metabolismo , Calcinose/complicações , Cateterismo Cardíaco , Baixo Débito Cardíaco/etiologia , Cardiomiopatias/complicações , Diagnóstico Diferencial , Ecocardiografia Transesofagiana , Humanos , Cirrose Hepática/complicações , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/complicações , Pericardiectomia , Pericardite Constritiva/diagnóstico , Pericardite Constritiva/diagnóstico por imagem , Pericardite Constritiva/cirurgia , Proteínas/análise , Recidiva , Resultado do Tratamento
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