RESUMO
Bronchopleural fistula (BPF) is a feared postoperative complication of pneumonectomy that carries significant morbidity and mortality. BPF can be treated by various surgical and medical techniques. Endobronchial techniques have been used for the delivery of biological glue, sealants, coils, and covered stents with variable degrees of success, depending on the size of the fistula. A recent case report described the endobronchial closure of a BPF through the implantation of an Amplatzer ASD device, commonly used for transcatheter closure of atrial septal defects. In this case report, we describe closure of a BFP using the Amplatzer PFO device.
Assuntos
Fístula Brônquica/cirurgia , Broncoscopia/métodos , Doenças Pleurais/cirurgia , Dispositivo para Oclusão Septal , Idoso , Fístula Brônquica/diagnóstico por imagem , Fístula Brônquica/etiologia , Desenho de Equipamento , Evolução Fatal , Seguimentos , Humanos , Neoplasias Pulmonares/cirurgia , Masculino , Doenças Pleurais/diagnóstico por imagem , Doenças Pleurais/etiologia , Pneumonectomia/efeitos adversos , Complicações Pós-Operatórias , RadiografiaRESUMO
Infective endocarditis (IE) after transcatheter aortic valve implantation (TAVI) is a rare but severe complication. Among 326 patients who underwent TAVI at Grenoble Alpes University Hospital, six (1.8%) cases of IE and 11 (3.4%) cases of bacteraemia were identified. No cases of IE were linked to the intervention; one was due to Staphylococcus aureus despite a screening and targeted decolonization strategy. This underscores the need for randomized studies to evaluate the benefit and cost-effectiveness of this policy.
Assuntos
Bacteriemia/epidemiologia , Endocardite/complicações , Endocardite/epidemiologia , Hospitais Universitários , Substituição da Valva Aórtica Transcateter/efeitos adversos , Idoso , Idoso de 80 Anos ou mais , Feminino , França/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Infecções Estafilocócicas/epidemiologia , Staphylococcus aureus/isolamento & purificaçãoRESUMO
AIM: To assess the prognostic impact of a therapeutic program based on bioclinical risk-stratification and myocardial-perfusion-imaging (MPI) data on survival and the occurrence of coronary events (CE=death+myocardial infarction) in asymptomatic patients with diabetes. METHOD: Five hundred twenty one consecutive asymptomatic diabetic outpatients were prospectively enrolled and clinically classified as being at either low or high cardiac risk. All high-risk patients (n=245, age 61+/-9 years) underwent MPI and an intensive multifactorial medical therapeutic program, including anti-ischaemic agents in cases of moderate ischemia; a coronary angiography was performed in all high-risk patients with severe ischaemia (n=38), followed by immediate revascularization if necessary (n=21). Low-risk patients (n=276, age 57+/-9 years) underwent medical management of their risk factors. RESULTS: At the 19-month (median) follow-up (range, 12-36 months), both high- and low-risk patients showed similarly low CE rates (2.3% and 1.5% per year, respectively; age- and gender-adjusted log-rank P=NS). None of the patients who underwent myocardial revascularization experienced any CEs, and none of the low-risk patients died during follow-up. The negative predictive value of first-line bioclinical stratification was 0.98 for the occurrence of CEs, and 0.95 when low-risk patients were combined with high-risk patients who had normal MPI findings. CONCLUSIONS: Bioclinical first-line stratification allows identification of diabetic patients who have a good medium-term cardiac prognosis. The CE rate is similar in selected high-risk asymptomatic patients with diabetes using an intensive MPI-guided program that combines medical therapy, coronary angiography in the 16% of cases with severe ischemia and, if appropriate, revascularization.
Assuntos
Doença das Coronárias/epidemiologia , Angiopatias Diabéticas/epidemiologia , Isquemia Miocárdica/terapia , Idoso , Idoso de 80 Anos ou mais , Diabetes Mellitus Tipo 1/tratamento farmacológico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Eletrocardiografia , Feminino , França/epidemiologia , Humanos , Hipoglicemiantes/uso terapêutico , Incidência , Masculino , Pessoa de Meia-Idade , Seleção de Pacientes , Fatores de Risco , SobreviventesRESUMO
BACKGROUND: The prognostic impact of a myocardial ischemia-based therapeutic program in asymptomatic diabetic patients remains controversial. We prospectively assessed the benefit of a stratification algorithm based upon clinical and myocardial perfusion imaging (MPI) data on cardiovascular events in such patients in a non-randomized register. METHOD: 701 consecutive asymptomatic diabetic patients were classified to be at low or intermediate-to-high cardiac risk according to 13 simple boil-clinical parameters. Intermediate-to-high risk patients were scheduled for MPI and underwent either a conventional (Group 1, n=180) or an intensive multifactorial (Group 2, n=245) therapeutic program. Low risk patients (Group 3, n=276) underwent no specific management. RESULTS: At the end of the survey and as a consequence of intensive management, lipid lowering therapy, antiplatelet drugs, and beta-blockers were more often prescribed in Group 2 than in Group 1 (55, 31 and 17% versus 36, 23, and 8% respectively, p<0.01). Planned coronary angiography in case of severe ischemia on MPI and revascularization were more frequent in Group 2 (16.2 and 8.9%) than in Group 1 (8.0 and 2.8% - p<0.01). At 19-month follow-up (96.7% completed), major event rate in Group 2 was significantly lower than in Group 1 (3.9 versus 9.8%, p<0.01) and similar to that of Group 3 (2.2%, NS). CONCLUSION: Easy-to-perform risk stratification is able to select diabetic patients with good medium-term prognosis. In clinically selected higher risk patients, an intensive medical therapy combined with coronary angiography +/- revascularization in case of large ischemia on MPI is effective to improve prognosis.
Assuntos
Angiopatias Diabéticas/diagnóstico , Isquemia Miocárdica/diagnóstico , Idoso , Angiopatias Diabéticas/epidemiologia , Feminino , França/epidemiologia , Cardiopatias/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica/epidemiologia , Prognóstico , Sistema de Registros , Fatores de RiscoRESUMO
The aim of this study was to describe the changes in strategy of revascularisation in acute coronary syndromes with ST elevation (ACS ST+) since setting up a health care network. The authors analysed the incidence of coronary angioplasty and of intravenous thrombolysis from a prospective permanent hospital register of patients with ACS ST+ in the three Northern Alps departments from october 1st 2002 to december 31st 2004. Respectively, 171 patients were enrolled in 2002 and 675 in 2003, and 588 in 2004. The use of percutaneous coronary intervention increased (57, 69, and 78% in 2002, 2003, 2004, p< 0.01) in relation to the increased use of immediate secondary percutaneous coronary intervention (27, 36, 43%, p< 0.01) although the use of primary percutaneous coronary intervention did not changed (30, 33, 35%, p= 0.17). These results were observed in hospitals with and without Percutaneous Coronary Intervention facilities. An increase in prehospital (49, 67, 68%, p= 0.02) and hospital thrombolysis (48, 68, 73%, p= 0.03) was only observed in patients managed in institutions without Percutaneous Coronary Intervention facilities. The average delay to arterial punction (120. 124, 100 minutes, p< 0.01) and to intravenous thrombolysis (40, 30, 25 minutes, p< 0.01) decreased during the same period. Patients with ACS ST+ more commonly benefit from coronary revascularisation at increasingly shorter intervals to treatment. This would seem to be related to the better coordination of practitioners after the implantation of a health care network.
Assuntos
Angioplastia Coronária com Balão/estatística & dados numéricos , Infarto do Miocárdio/cirurgia , Revascularização Miocárdica , Sistema de Registros/estatística & dados numéricos , Terapia Trombolítica/estatística & dados numéricos , Idoso , Eletrocardiografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/fisiopatologia , Estudos Prospectivos , Fatores de TempoRESUMO
The aim of this study was to compare the mortality associated to primary angioplasty and thrombolysis in patients managed for an elevated ST-segment acute coronary syndrome in less than or more than 3 hours after the onset of symptoms. We analyzed the in-hospital mortality of 846 patients (including 276 [33%] treated by primary angioplasty, 511 [60%] by thrombolysis, and 59 [7%] without revascularisation) included from October 2002 to December 2003 in a registry of patients with an elevated ST-segment acute coronary syndrome managed in less than 12 hours in Northern Alps districts. The overall in-hospital mortality was at 6.0% (51/846). For the 631 managed in <3 hours, the mortality rates were respectively at 5.0%, 4.6% and 11.1% respectively in case of primary angioplasty, thrombolysis and without revascularisation (p=0.21). For the 215 patients with pain lasting more than 3 hours, the mortality rates were at 2.7%, 10.3% and 21.7% in case of primary angioplasty, thrombolysis and no revascularisation, respectively (p=0.01). In the multivariable analysis, the OR of death in case of thrombolysis compared to primary angioplasty was at 1.65 (95% IC: 0.73 - 3.75) for patients with pain " 3 hours, and 4.98 (95% IC: 1.32-18.37) for those with pain > 3 hours. These results are in line with randomized trials conclusions and confirm the international guidelines suggesting primary angioplasty for patients with a chest pain >3 hours and either angioplasty or thrombolysis in case of chest pain < 3 hours.
Assuntos
Eletrocardiografia , Infarto do Miocárdio/cirurgia , Revascularização Miocárdica/efeitos adversos , Idoso , Estudos de Coortes , Feminino , França , Mortalidade Hospitalar , Humanos , Masculino , Pessoa de Meia-Idade , Revascularização Miocárdica/métodos , Revascularização Miocárdica/mortalidade , Seleção de Pacientes , Fatores de TempoRESUMO
In this paper, we present a proof of concept study which demonstrates for the first time the possibility of recording magnetocardiography (MCG) signals with 4He vector optically pumped magnetometers (OPM) operated in a gradiometer mode. Resulting from a compromise between sensitivity, size and operability in a clinical environment, the developed magnetometers are based on the parametric resonance of helium in a zero magnetic field. Sensors are operated at room temperature and provide a tri-axis vector measurement of the magnetic field. Measured sensitivity is around 210 f T (âHz)-1 in the bandwidth (2 Hz; 300 Hz). MCG signals from a phantom and two healthy subjects are successfully recorded. Human MCG data obtained with the OPMs are compared to reference electrocardiogram recordings: similar heart rates, shapes of the main patterns of the cardiac cycle (P/T waves, QRS complex) and QRS widths are obtained with both techniques.
Assuntos
Hélio , Magnetocardiografia/instrumentação , Fenômenos Ópticos , Temperatura , Frequência Cardíaca , HumanosRESUMO
Registers of the management of infarction can complement information obtained from randomised trials evaluating the methods and practice of treatment. In order to do this, the quality of the registers must be assured, and in particular the accuracy of the recorded cases. The objective of this study was to evaluate the accuracy of a register for the in-hospital and pre-hospital management of acute coronary syndromes with ST segment elevation of less than 12 hours' duration. Using a capture-recapture method, the study compared cases in the register with eligible cases present in the hospital and emergency ambulance service databases at two establishments, giving a recruitment rate of 61%. The rate of accuracy was estimated at 84% (95% CI [82 ; 86]). The independent factors associated with failure of notification were female sex (ORa=6.65 [2.04-21.69]), presentation at nights, weekends or bank holidays (ORa=4.13 [1.33-12.85]), direct admission to hospital without passing by the emergency ambulance service (ORa=2.85 [1.03-7.69]), primary angioplasty (ORa=6.18 [1.60-23.79]) and the absence of reperfusion (ORa=40.38 [6.21-262.40]). With more than 80% accuracy, the results produced by the register are robust. The selection bias linked to the under-representation of certain subgroups, while real, has only a marginal impact on estimates derived from the register. Factors associated with failure of notification should be taken into account when operating such a register.
Assuntos
Angina Instável/epidemiologia , Coleta de Dados , Infarto do Miocárdio/epidemiologia , Sistema de Registros , Ensaios Clínicos como Assunto , Feminino , França/epidemiologia , Humanos , Masculino , Estudos RetrospectivosRESUMO
A 48 year old man was admitted to the intensive care unit with septicaemic shock associated with febrile jaundice and anuric renal failure. Within hours, he developed cardiogenic shock with multi-organ failure due to an acute myocarditis refractory to catecholamines and requiring intra-aortic balloon pumping. The diagnosis was an ictero-haemorrhagic leptospirosis, the outcome of which was finally favourable. Myocarditis is an underestimated complication of leptospirosis because it is often symptomless. The main signs are arrhythmias, conduction defects and ST-T wave abnormalities which have little clinical expression. The disease may progress and is sometimes fatal. Leptospirosis myocarditis should therefore be carefully considered because of its potential severity and its reversibility with appropriate antibiotic therapy and also the necessity of initial management in a specific infrastructure.
Assuntos
Miocardite/complicações , Miocardite/microbiologia , Choque Cardiogênico/etiologia , Doença de Weil/diagnóstico , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a treatment for high-risk patients with symptomatic severe aortic stenosis. The aim of the study is to assess results of comprehensive geriatric assessment before TAVI and geriatrician advices about TAVI procedure feasibility. We report one-year outcomes after TAVI procedure. METHODS: All patients who underwent comprehensive geriatric assessment in geriatric day hospital before TAVI were prospectively included in Grenoble. We report characteristics of the patients, geriatrician advices about TAVI procedure feasibility and risks, and one year follow-up. RESULTS: Twenty-one frail elderly patients underwent geriatric assessment. The mean age was 85.4; demographics included cognitive impairment (76%), renal dysfunction (81%), NYHA functional class III or IV (48%). Eighteen patients were suitable for TAVI according to geriatric assessment, 8 underwent TAVI. None of the 3 patients who were not candidate for TAVI according to geriatricians were implanted. Cardiologists followed geriatrician advices for 56% of cases. Intensive care unit and cardiology stay were prolonged at 3.5 and 7.9days, respectively. Six out of the 8 patients stayed in rehabilitation unit after TAVI. None of the implanted patients died at one-year follow up, despite of the common periprocedural complications: acute kidney injury, ischemic stroke, delirium, pacemaker, hemorrhage. CONCLUSIONS: Cardiologists follow geriatrician advices about TAVI feasibility in frail elderly patients. Comprehensive geriatric assessment also helps preventing complications and providing quick assessment of occurring periprocedural and postprocedural complications. Optimal management of frail elderly patients undergoing TAVI is a multidisciplinary task involving cardiologists, anaesthetists and geriatricians.
Assuntos
Idoso Fragilizado , Avaliação Geriátrica , Equipe de Assistência ao Paciente , Seleção de Pacientes , Substituição da Valva Aórtica Transcateter , Idoso de 80 Anos ou mais , Estenose da Valva Aórtica/cirurgia , Cardiologistas , Feminino , Seguimentos , França , Geriatras , Humanos , Tempo de Internação , Masculino , Cuidados Pré-Operatórios , Estudos ProspectivosRESUMO
BACKGROUND: Many patients with acute ST-segment elevation myocardial infarction (STEMI) are admitted to emergency departments (EDs) of centres without percutaneous coronary intervention (PCI) facilities. The 2012 European Society of Cardiology guidelines recommend transfer to a PCI centre with a "door in - door out" (DI-DO) time≤30min. PURPOSE: To report DI-DO times in a registry of patients with acute STEMI. METHODS: The RESeau des Urgences CORonarienne (RESUCOR) is a permanent registry of patients admitted with acute STEMI in 16 hospitals in the north French Alps since 2002. In patients admitted to a non-PCI centre, the DI-DO times were split into "diagnostic time" (from admission to transfer decision) and "logistical time" (from transfer decision to discharge). RESULTS: Of 2081 patients included in the registry from 2012 to 2014, 493 were admitted directly into an ED (254 PCI centre and 239 non-PCI centre). Of those admitted into an ED of a non-PCI centre, 228 were immediately transferred to a PCI centre (76 treated with thrombolysis and 132 with primary PCI). The proportions of patients with DI-DO≤30min and median (interquartile range [IQR]) DI-DO times are reported in the Table 1. Median (IQR) DIDO times were 90.5 (69-118) min for patients treated with thrombolysis and 88 (62-147) min for primary PCI. CONCLUSIONS: DI-DO times were longer than recommended. Efforts to decrease these delays are required. Transfer with a non-PCI centre ambulance is preferable.
Assuntos
Angioplastia Coronária com Balão/estatística & dados numéricos , Serviço Hospitalar de Emergência/estatística & dados numéricos , Admissão do Paciente/estatística & dados numéricos , Transferência de Pacientes/estatística & dados numéricos , Infarto do Miocárdio com Supradesnível do Segmento ST/diagnóstico , Infarto do Miocárdio com Supradesnível do Segmento ST/epidemiologia , França , Fidelidade a Diretrizes , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Humanos , Sistema de Registros , Estudos de Tempo e MovimentoRESUMO
In the emergency department, the management of patients with pulmonary embolism depends on the early mortality risk. Outpatient care is possible in low-risk patients. We present the existing scores and the strategy proposed by the North Alps Emergency Network, which uses the simplified PESI score (Pulmonary Embolism Severity Index) to select those low-risk patients, candidates for early discharge.
Assuntos
Serviço Hospitalar de Emergência , Ambulatório Hospitalar , Embolia Pulmonar/diagnóstico , Embolia Pulmonar/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Algoritmos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Admissão do Paciente , Seleção de Pacientes , Estudos Prospectivos , Embolia Pulmonar/mortalidade , Medição de Risco/estatística & dados numéricos , Análise de SobrevidaRESUMO
BACKGROUND: The exercise treadmill test (ETT) and Tl201 single proton emission computed tomography (SPECT) are of short- to medium-term prognostic value in coronary heart disease. We assessed the long-term prognostic value of these tests in a large population of patients with low- to intermediate risk of cardiac events. METHODS AND RESULTS: One thousand one hundred thirty-seven patients (857 men, age 55+/-9 years) referred for typical (62.1%) or atypical (22.4%) chest pain, or suspected silent ischemia (15.5%), were followed up for 72+/-18 months. Overall mortality was higher after strongly positive (ST depression >2 mm, or >1 mm for a workload =75 W) (2. 36%/y) or nondiagnostic ETT (1.63%/y) than after normal (0.85%/y) or positive ETT (1.37%/y) (P=0.002), and after abnormal SPECT than after normal SPECT (1.60%/y versus 0.68%/y, P=0.001). The major cardiac event rate (cardiac death or myocardial infarction [MI]) was 0.88%, 1.59%, 2.10%, and 2.13%/y after negative, positive, strongly positive, and nondiagnostic ETT, respectively (P=0.003), and 0.56%, 1.43%, and 2.05%/y in patients with 0, 1 to 2, and >/=3 abnormal segments on SPECT, respectively (P<0.002). An abnormal SPECT was predictive of MI (P<0.001), whereas ETT was not. In multivariate analysis, SPECT was of incremental prognostic value over clinical and ETT data for predicting overall mortality and major cardiac events. CONCLUSIONS: The incremental predictive value of SPECT is maintained over 6 years and is particularly relevant after positive, strongly positive, and nondiagnostic ETT.
Assuntos
Doença das Coronárias/diagnóstico por imagem , Teste de Esforço , Radioisótopos de Tálio , Tomografia Computadorizada de Emissão de Fóton Único , Adulto , Idoso , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Revascularização Miocárdica , PrognósticoRESUMO
BACKGROUND: The myocardial uptake of (99m)Tc-sestamibi is attenuated by dobutamine stress, resulting in underestimation of ischemia. N-Ethyl-N-ethoxy-dithiocarbamato-N-(99m)Tc ((99m)Tc-N-NOET) is a new (99m)Tc-labeled perfusion agent that is highly extracted by the myocardium by a mechanism different from that defined for (99m)Tc-sestamibi. We therefore hypothesized that (99m)Tc-N-NOET uptake would not be attenuated by dobutamine and that (99m)Tc-N-NOET uptake would be comparable to (201)Tl uptake during dobutamine stress. METHODS AND RESULTS: In 28 open-chest dogs, after placement of a stenosis in the left anterior descending coronary artery that reduced flow reserve by >50%, adenosine (300 microgram. kg(-1). min(-1); n=15) or dobutamine (2.5 to 30 microgram. kg(-1). min(-1); n=13) was infused. During adenosine stress, the stenotic-to-normal activity ratio for (99m)Tc-N-NOET was 0.55+/-0.05. The stenotic-to-normal flow ratio was 0.33+/-0.04 at the time of (99m)Tc-N-NOET injection. During dobutamine stress, the stenotic-to-normal (99m)Tc-N-NOET activity ratio was 0.63+/-0.04, comparable to the (201)Tl activity ratio of 0.59+/-0.04. The stenotic-to-normal flow ratio was 0.47+/-0.04 at the time of (99m)Tc-N-NOET and (201)Tl injection. The relationship between (99m)Tc-N-NOET uptake and blood flow was comparable for adenosine and dobutamine stress, with no evidence of attenuation of (99m)Tc-N-NOET extraction by dobutamine. Conclusions-In the presence of coronary stenoses that reduced regional flow reserve, the myocardial uptake of (99m)Tc-N-NOET and (201)Tl are closely proportional to blood flow during both adenosine and dobutamine stress, suggesting that the adverse effect of dobutamine on (99m)Tc-sestamibi uptake is a tracer-specific phenomenon rather than a generalized effect. The clinical implication of this finding is that (99m)Tc-N-NOET might be preferable to (99m)Tc-sestamibi when used with dobutamine stress for detection of coronary stenoses.
Assuntos
Adenosina/farmacologia , Doença das Coronárias/diagnóstico por imagem , Vasos Coronários/diagnóstico por imagem , Dobutamina/farmacologia , Coração/efeitos dos fármacos , Miocárdio/metabolismo , Compostos de Organotecnécio/farmacocinética , Radioisótopos de Tálio/farmacocinética , Tiocarbamatos/farmacocinética , Adenosina/toxicidade , Animais , Circulação Coronária/efeitos dos fármacos , Modelos Animais de Doenças , Dobutamina/toxicidade , Cães , Interações Medicamentosas , Coração/diagnóstico por imagem , Cintilografia , Estresse Fisiológico/induzido quimicamente , Estresse Fisiológico/metabolismo , Tecnécio Tc 99m Sestamibi/farmacocinéticaRESUMO
BACKGROUND: N-Ethoxy-N-ethyl-dithiocarbamato-nitrido-(99m)Tc ((99m)Tc-N-NOET) is a new neutral lipophilic (99m)Tc-labeled myocardial perfusion agent with a high first-pass extraction fraction and delayed redistribution kinetics after transient ischemia comparable to what is observed with (201)Tl. It is unknown whether the uptake of this tracer reflects myocardial viability or just reperfusion flow in the setting of a reperfused myocardial infarction. METHODS AND RESULTS: In 13 anesthetized open-chest dogs, the left anterior descending coronary artery was occluded for 180 minutes, followed by 180 minutes of reperfusion. (201)Tl and (99m)Tc-N-NOET were injected after either 60 (group 1, n=9) or 175 (group 2, n=4) minutes of reperfusion. Myocardial blood flow was measured by radioactive microspheres, and (201)Tl and (99m)Tc-N-NOET tissue activities were determined by gamma-well counting. Normalized myocardial blood flow in the central infarct zone fell from 0.80+/-0. 03 (SEM) and 0.89+/-0.01 at baseline to 0.18+/-0.04 and 0.13+/-0.02 during the occlusion in groups 1 and 2, respectively. Normalized (201)Tl activity in these segments was 0.39+/-0.04 and 0.43+/-0.04 and reflected myocardial viability rather than reperfusion flow (P<0. 001). Normalized (99m)Tc-N-NOET activity in the same segments was 0. 84+/-0.08 and 0.64+/-0.03, respectively (P<0.01 versus (201)Tl; P=NS versus reperfusion flow) and more accurately reflected reperfusion flow (0.99+/-0.17 and 0.70+/-0.04) than residual viability. CONCLUSIONS: The myocardial uptake of (99m)Tc-N-NOET reflects reperfusion myocardial blood flow and not viability in a canine model of reperfused acute myocardial infarction. The clinical use of early (99m)Tc-N-NOET imaging to assess the success of coronary reperfusion in patients with acute myocardial infarction should be investigated.
Assuntos
Circulação Coronária , Infarto do Miocárdio/terapia , Traumatismo por Reperfusão Miocárdica/fisiopatologia , Miocárdio/metabolismo , Compostos de Organotecnécio/farmacocinética , Compostos Radiofarmacêuticos/farmacocinética , Tiocarbamatos/farmacocinética , Sobrevivência de Tecidos , Animais , Cães , Câmaras gama , Hemodinâmica , Microesferas , Infarto do Miocárdio/patologia , Traumatismo por Reperfusão Miocárdica/diagnóstico por imagem , Cintilografia , Radioisótopos de Tálio/farmacocinéticaRESUMO
OBJECTIVES: This study was designed to assess the prognostic value of thallium-201 single-photon emission computed tomographic (thallium SPECT) perfusion imaging in patients evaluated for stable angina pectoris and to examine the relation, if any, between the presence and extent of myocardial defect and future fatal or nonfatal cardiovascular events (revascularization, secondary myocardial infarction). BACKGROUND: Compared with planar scintigraphy, thallium SPECT enables better evaluation of the extent of myocardial perfusion defect. However, its prognostic value has not yet been studied in a large population of patients. METHODS: Between 1987 and 1989 we studied 3,193 patients. After exclusion of patients with unstable angina, myocardial infarction during the previous month or earlier revascularization, 1,926 patients were followed up for 33 +/- 10 (mean +/- SD) months after stress thallium SPECT imaging (performed after exercise in 1,121 patients or during dipyridamole infusion in 805 patients). Thallium SPECT imaging of the left ventricle was divided into six segments. RESULTS: After normal thallium SPECT imaging (715 patients), the annual total and cardiovascular mortality rates were, respectively, 0.42%/year and 0.10%/year and were significantly higher after abnormal thallium SPECT imaging (respectively, 2.1%, relative risk 5, p = 0.012; 1.5%, relative risk 15, p < 0.0001 [log-rank test]). There was a significant relation between the number of abnormal segments and cardiovascular mortality during follow-up (p < 0.02) or the occurrence of nonfatal events (p < 0.001). The extent of defect on the initial scan provided the best SPECT variable for long-term prognosis. Thallium SPECT imaging provided additive prognostic information compared with other clinical variables (gender, previous myocardial infarction) and exercise electrocardiogram. CONCLUSIONS: In patients with stable angina, normal thallium SPECT imaging indicates a low risk patient, and the extent of myocardial defect is an important prognostic predictive factor.
Assuntos
Angina Pectoris/diagnóstico por imagem , Coração/diagnóstico por imagem , Radioisótopos de Tálio , Tomografia Computadorizada de Emissão de Fóton Único , Adulto , Idoso , Angina Pectoris/mortalidade , Eletrocardiografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Taxa de SobrevidaRESUMO
Chronic occlusive arterial disease of the lower limbs is a common presentation of atherothrombotic disease. This systematic review of the literature analyses the natural history of this condition and the prevalence of asymptomatic lesions of other arterial localisations requiring specific treatment. The Medline database was researched and completed by a bibliography of the principal articles selected, Internet sites and their publication reviews and also the Cochrane database. The incidence of systemic complications has been assessed in many good quality epidemiological study. It increases with the severity of lower limb arterial disease, but in asymptomatic patients defined by a pathological systolic pressure index (< 0.90) the cardiovascular mortality is already 2% per year, the incidence of myocardial infarction 3% per year and that of cerebrovascular accidents 1 to 2% per year. The prevalence of asymptomatic lesions in other arterial sites is less well documented, the evaluations varying according to the population studied and criteria of significant lesions: 21 to 69% for coronary artery disease, 12 to 59% for carotid artery stenosis, 14 to 40% for renal artery stenosis and 6 to 14% for abdominal aortic aneurysms. Despite the uncertainty of these estimations, the prevalence of asymptomatic atherothrombotic lesions is high in all arterial networks and justifies the setting up of studies to assess the clinical benefits of their systematic diagnostic investigations.
Assuntos
Arteriosclerose/epidemiologia , Perna (Membro)/irrigação sanguínea , Bases de Dados Factuais , Humanos , IncidênciaRESUMO
OBJECTIVE: We evaluated the prognostic value of an exercise stress test and thallium-201 scintigraphy for the prediction of cardiac events in selected high-risk NIDDM patients. RESEARCH DESIGN AND METHODS: NIDDM patients (n = 158, 105 men, aged 63 +/- 9 years) with two or more of the following criteria were prospectively included: age > or = 65 years, active smoking, hypertension > 160/95 mmHg, hypercholesterolemia (cholesterol > 5.70 mmol/l or LDL > 3.10 mmol/l), peripheral artery disease, abnormal rest electrocardiogram, or microalbuminuria (20-200 micrograms/min). An exercise-stress scintigraphy was performed in 77 patients able to exercise, while a dipyridamole scintigraphy was performed in 80 patients unable to exercise. Follow-up was 23 +/- 17 months. Major end points were cardiac deaths or nonfatal myocardial infarction. RESULTS: The annual event rate was 7.31% (deaths: 8, myocardial infarction: 14). Independent predictors of events were as follows: an age > 60 (P = 0.02), an abnormal rest electrocardiogram (P = 0.02), microalbuminuria (P = 0.001), the inability to exercise (P = 0.009), and the presence of more than two defects on scintigraphy (P = 0.001). A cardiac death occurred in 1.3% of patients able to exercise versus 8.8% of patients unable to exercise (odds ratio = 6.8, P = 0.001). Among patients unable to exercise, large perfusion defects corresponded to an annual mortality rate of 22.3%. Conversely, the negative predictive value of a normal scintigraphy for the occurrence of death was 97%. CONCLUSIONS: Inability to exercise and large perfusion defects on thallium-201 scan are major predictors of future death and myocardial infarction in high-risk NIDDM patients.
Assuntos
Doenças Cardiovasculares/epidemiologia , Morte Súbita Cardíaca/epidemiologia , Diabetes Mellitus Tipo 2/diagnóstico por imagem , Diabetes Mellitus Tipo 2/fisiopatologia , Teste de Esforço , Coração/diagnóstico por imagem , Infarto do Miocárdio/epidemiologia , Tomografia Computadorizada de Emissão de Fóton Único , Atividades Cotidianas , Idoso , Análise de Variância , Colesterol/sangue , HDL-Colesterol/sangue , Diabetes Mellitus Tipo 2/mortalidade , Angiopatias Diabéticas/epidemiologia , Angiopatias Diabéticas/fisiopatologia , Dipiridamol , Exercício Físico , Feminino , Coração/fisiopatologia , Humanos , Hipertensão/epidemiologia , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Valor Preditivo dos Testes , Prognóstico , Fatores de Risco , Radioisótopos de Tálio , VasodilatadoresRESUMO
Data on regional variations in the characteristics, management and early outcome of patients admitted with ST-elevation myocardial infarction (STEMI) in France are limited. We used data from the FAST-MI 2010 registry to determine whether regional specificities existed, dividing the French territory into 6 larger geographical regions. Variations in the patients' characteristics were found, partly related to regional variations in demography. Acute reperfusion strategy showed more use of primary percutaneous coronary intervention in the greater Paris area, compared to other regions, which would be expected owing to geography and local availability of catheterization laboratories. Overall, however, in-hospital management showed more similarities than differences across regions. Complications, and in particular in-hospital mortality, did not differ significantly among regions.
Assuntos
Sistema de Condução Cardíaco/fisiopatologia , Infarto do Miocárdio/epidemiologia , Infarto do Miocárdio/terapia , Reperfusão Miocárdica/métodos , Idoso , Idoso de 80 Anos ou mais , Anti-Inflamatórios não Esteroides/uso terapêutico , Quimioterapia Combinada , Feminino , França/epidemiologia , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Infarto do Miocárdio/fisiopatologia , Intervenção Coronária Percutânea/métodos , Prevalência , Fatores de Risco , Resultado do TratamentoRESUMO
Numerous experimental and clinical studies have reported a role of radical forms of oxygen in the etiology of the manifestations of reperfusion of the ischemic myocardium. However, clinical results remain controversial. The aim of this study was to ascertain the existence of reperfusion-related radical stress after thrombolysis with a marker that is easy to use and reliable. Thirty patients hospitalized for acute myocardial infarction were involved in the study. Of these, 18 had been subjected to intravenous thrombolysis (Group I) and 12 had not (Group II). They were compared to two control groups who had no history of myocardial infarction. Of these, 16 were patients with coronary heart disease hospitalized for stable angina (Group III) and 17 were patients free of any known cardiovascular disease (Group IV). Radical activity was assessed in plasma samples taken from a peripheral vein over a 10-day period of hospitalization by measuring (1) malondialdehydes (MDA) concentrations using fluorometry techniques or HPLC, (2) the antioxidant activity of glutathione peroxidase (GPx) and (3) the concentration of various antiradical compounds (beta-carotene, vitamins A and E, uric acid). All patients in Group I had a patent artery on coronary angiography and showed a significant increase in plasma MDA when compared to those who had not been subjected to thrombolysis (3.15 +/- 0.62 and 2.70 +/- 0.40 mole/l of plasma, respectively). Furthermore, GPx plasma activity was also significantly increased following thrombolysis. By contrast, there was no significant alteration in the antiradical compounds measured. These data suggest that MDA measurements (an early measurement 1-2 days and a late measurement 5-7 days after reperfusion) by fluorometry is a good marker of radical stress during reperfusion in man. The assessment of this marker in patients might represent a simple and reliable test of reperfusion efficacy following thrombolysis, and it might enable one to test the effect of various antioxidant therapies associated with thrombolytic treatment.