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1.
Am J Transplant ; 8(6): 1336-9, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18444927

RESUMO

Irreversible hepatic cirrhosis greatly increases the risks attending heart transplantation (HT), and is accordingly considered to be an absolute contraindication for HT unless combined heart and liver transplantation can be performed. It is now recognized that hepatic cirrhosis can undergo regression if the source of insult is removed, but no cases of post-HT regression of cirrhosis of cardiac origin have hitherto been reported. Here we report a case of cardiac cirrhosis that underwent complete regression following orthotopic HT, and we discuss the implications of this case.


Assuntos
Cardiomiopatia Dilatada/cirurgia , Transplante de Coração/métodos , Cirrose Hepática/etiologia , Cardiomiopatia Dilatada/complicações , Feminino , Humanos , Cirrose Hepática/fisiopatologia , Pessoa de Meia-Idade , Indução de Remissão
2.
Transplant Proc ; 40(9): 3060-2, 2008 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19010194

RESUMO

INTRODUCTION: Statins, although the treatment of choice for dyslipidemia after heart transplantation (HT), are not always well tolerated or effective. In such cases, administration of ezetimibe may be useful. AIM: The aim of this study was to assess the efficacy and safety of ezetimibe, with or without statins, after HT. METHOD: Thirty-six HT patients, 97% of whom were males of overall mean age of 57 +/- 13 years, were all unable to reach target lipid levels with statins alone and/or were intolerant of statins. They were prescribed ezetimibe, with or without a statin. Efficacy and safety were evaluated after 1, 3, 6, and 12 months. RESULTS: Thirty-four patients were evaluated at 1 month and 12 months. Ezetimibe was prescribed to 27 patients (75%) because of statin inefficacy, and to 9 patients (25%) because of statin intolerance, manifested by myalgia in 4 cases (11%), hepatotoxicity in 2 cases (6%), and rhabdomyolysis in 3 cases (8%). Lipid levels (mg/dL; baseline vs 1 year) were as follows: cholesterol, 235 +/- 49 versus 167 +/- 32 (P = .013); LDL cholesterol, 137 +/- 47 versus 89 +/- 29 (P = .001); HDL cholesterol, 54 +/- 13 versus 51 +/- 10 (P = .235); and triglycerides, 243 +/- 187 versus 143 +/- 72 (P = .022). There were no cases of liver toxicity, renal dysfunction, or significant alteration of immunosuppressive pharmacokinetics. Ezetimibe was withdrawn from 2 patients because of hand edema or asymptomatic recurrence of rhabdomyolysis first caused by statins. CONCLUSIONS: With or without a statin, ezetimibe was generally well tolerated, reducing total cholesterol, LDL cholesterol, and triglyceride levels with no long-term alteration of HDL cholesterol levels. CPK surveillance is recommended because of a slight continued risk of adverse effects. Further studies should evaluate the benefit for survival.


Assuntos
Anticolesterolemiantes/uso terapêutico , Azetidinas/uso terapêutico , Dislipidemias/tratamento farmacológico , Transplante de Coração/fisiologia , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Complicações Pós-Operatórias/tratamento farmacológico , Adulto , Idoso , Atorvastatina , Quimioterapia Combinada , Tolerância a Medicamentos , Ezetimiba , Feminino , Transplante de Coração/imunologia , Ácidos Heptanoicos/uso terapêutico , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Imunossupressores/uso terapêutico , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Pravastatina/uso terapêutico , Pirróis/uso terapêutico , Adulto Jovem
3.
Transplant Proc ; 40(9): 3027-30, 2008 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19010181

RESUMO

INTRODUCTION: Safety of treatment with mammalian target of rapamycin inhibitors (mTORi) in the postoperative period after heart transplantation (HT) is controversial. METHODS: We evaluated the incidence of postoperative complications (pericardial, pleural, and surgical wound complications) among nine de novo heart transplant recipients treated with mTORi compared with 19 patients who did not receive them during the same period (control group). RESULTS: No significant differences were observed between the two groups regarding sex, age, body mass index, pretransplant diagnosis, history of diabetes mellitus, prior cardiac surgery, or baseline renal function. The main laboratory parameters at 1 month were also similar. During the first 2 months after HT, four patients (44%) in the mTORi group developed severe pericardial effusions requiring drainage, compared to 1 (5%) in the control group (P = .026). All patients presenting this complication in the mTORi group received everolimus. In addition, two cases of sternal dehiscence were observed in the mTORi group, compared to none in the control group (P = .09); one patient on everolimus required sternal reopening and debridement for clinically suspected mediastinitis. Duration of chest tube drainage, quantity of collected pleural fluid, and need for thoracentesis were similar in both groups. CONCLUSIONS: In our series, patients receiving mTORi-particularly everolimus-during the postoperative period after HT showed a higher incidence of severe pericardial effusion requiring drainage, as well as a trend toward a higher incidence of sternal dehiscence, as compared to a group not receiving mTORi. The use of mTORi during the early postcardiac transplant period should be individualized.


Assuntos
Transplante de Coração/efeitos adversos , Proteínas Quinases/uso terapêutico , Adulto , Diabetes Mellitus/epidemiologia , Feminino , Transplante de Coração/imunologia , Humanos , Imunossupressores/uso terapêutico , Masculino , Pessoa de Meia-Idade , Seleção de Pacientes , Derrame Pericárdico/epidemiologia , Derrame Pleural/epidemiologia , Período Pós-Operatório , Estudos Retrospectivos , Serina-Treonina Quinases TOR
4.
Transplant Proc ; 39(7): 2372-4, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17889193

RESUMO

BACKGROUND: Steroid withdrawal (SW) after heart transplantation (HT) reduces steroid-associated side effects, although it can increase acute rejection episodes (ARE). Patient selection criteria for SW and the time elapsed after HT for this maneuver are controversial issues. The objective of this study was to assess the safety of late SW after HT with regard to the occurrence of ARE and to analyze risk factors resulting in a poor evolution. METHODS: We studied a cohort of 24 patients who underwent SW late after HT. All of them had gone at least 4 years without any ARE. Independent variables were time after HT, general recipient and donor data, risk factors for ARE, and immunosuppression. The dependent variables were occurrence of ARE (proven or not proven with endomyocardial biopsy) and time and severity of ARE. RESULTS: Among 24 HT patients including 96% men with an overall mean age of 57 years who underwent SW, the mean follow-up was 2.32 +/- 0.86 years. Six patients (25%) displayed an ARE >or=2R according to the International Society for Heart and Lung Transplantation (ISHLT) at 5 +/- 3 months after SW. There were no deaths. Time from the last rejection episode to SW was 6.6 +/- 2 years. All ARE were treated with steroid boluses (mean total dose 1583 +/- 1044 mg). Among the HT patients with ARE, 5 (85%) had never experienced ARE after HT. Upon long-term follow-up, there were 2 deaths: 1 sudden death at 30 months after SW and 1 due to allograft vasculopathy at 20 months post-SW. Currently 92% are New York Heart Association (NYHA) functional class I with a mean left ventricular ejection fraction of 67% +/- 10%. CONCLUSIONS: In our series of HT with late SW after HT (even among an HT population with a low risk of rejection), there was a 25% rate of ARE. This study did not allow us to identify risk factors for ARE after SW. We believe that based upon these observations SW should be implemented with caution.


Assuntos
Corticosteroides/administração & dosagem , Rejeição de Enxerto/epidemiologia , Transplante de Coração/fisiologia , Esquema de Medicação , Feminino , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Transplante de Coração/imunologia , Humanos , Imunossupressores/uso terapêutico , Masculino , Pessoa de Meia-Idade , Seleção de Pacientes , Estudos Retrospectivos , Fatores de Tempo
5.
Transplant Proc ; 39(7): 2382-4, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17889197

RESUMO

OBJECTIVE: Because of improved long-term survival of heart transplants (HT), patients often need noncardiac surgery (NCS). Immunosuppression may increase the infection rate. Inadequate management may increase the risk of dysfunction or acute rejection episodes (ARE). Long-term outcomes of NCS and optimal immunosuppressive management in the perioperative period are not well known. The objective of this study was to analyze the incidence, morbidity, and mortality of late NCS after HT. METHODS: We retrospectively evaluated the incidence and type of late NCS as well as the risk factors for complications and the mortality among 207 HT patients. Immunosuppression and ARE rates were also analyzed. RESULTS: One hundred and sixteen late NCS (84.5% elective) were performed in 72 HT patients (34.8%). Interventions were: 35 urologic (30.2%), 29 abdominal (25%), 14 vascular (12.1%), 13 ENT (11.2%), 11 skin and soft tissue (9.5%), and 7 orthopedic (6%). Malignancy was the main indication for NCS (33.6%). Only 4 patients (5.6%) died preoperatively. Mortality was higher among emergent vs elective procedures (16.6% vs 1%; P = .012) and among patients with preoperative high vs middle/low risk (26.6% vs 0%). Postsurgical infection was the most frequent complication (6.9%). However, there were no relevant complications in 82.8% of HT patients. Hospitalization time was <15 days in two thirds of patients. Immunosuppression was modified in 33 patients (28.4%), especially when the surgical indication was neoplasia (P < .001). None of the patients with NCS displayed allograft dysfunction or an ARE. CONCLUSIONS: More than one-third of HT patients needed a late NCS. In our experience, elective surgical procedures with middle/low preoperative cardiovascular risk are safe. In this context, the risk of rejection was low when immunosuppression was carefully monitored to reduce the risk of infection.


Assuntos
Transplante de Coração/fisiologia , Procedimentos Cirúrgicos Operatórios/estatística & dados numéricos , Seguimentos , Rejeição de Enxerto/epidemiologia , Humanos , Complicações Pós-Operatórias/classificação , Complicações Pós-Operatórias/cirurgia , Estudos Retrospectivos , Procedimentos Cirúrgicos Operatórios/classificação , Fatores de Tempo
6.
Eur J Echocardiogr ; 2006 Oct 10.
Artigo em Inglês | MEDLINE | ID: mdl-17045544

RESUMO

The publisher regrets that this was an accidental duplication of an article that has already been published in Eur. J. Echocardiogr., 4 (2003) 182-190, . The duplicate article has therefore been withdrawn.

7.
Transplant Proc ; 37(9): 4031-2, 2005 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16386618

RESUMO

BACKGROUND: Whether being older than 65 years should be considered an absolute counterindication to heart transplant (HT), as it is in some centers, is controversial. In our centre, patients older than 65 years are accepted for HT if they satisfy stringent conditions. The aim of this study was to examine whether heart recipients older than 65 years have a greater risk of rejection, neoplasia, or mortality than younger ones. METHODS: We studied 445 patients who underwent HT between April 1991 and December 2003, 42 of whom were older than 65 years and 403 who were 65 years or younger. The parameters evaluated were the cumulative incidences of neoplasias and rejections (ISHLT grade > or = 3A), and the survival rates 1 month, 1 year, and 5 years post-HT. RESULTS: The two groups had similar percentages of patients with at least one rejection episode (< or =65 years 56.9%, >65 years 51.3%; P > .05), and although there were proportionally almost twice as many tumors in the older group (14.2%) as in the younger (7.9%), this difference was not statistically significant either. Nor were there any significant differences in survival, the 1-month, 1-year, and 5-year rates being 87.8%, 82.1%, and 68.8%, respectively, in the younger group and 85.7%, 78.6%, and 73.4%, respectively, in the older. CONCLUSIONS: Among carefully selected patients aged more than 65 years, HT can be performed without incurring greater risk of rejection, malignancy, or death than is found among recipients younger than 65 years.


Assuntos
Rejeição de Enxerto/epidemiologia , Transplante de Coração/fisiologia , Neoplasias/epidemiologia , Seleção de Pacientes , Complicações Pós-Operatórias/epidemiologia , Fatores Etários , Idoso , Estudos de Coortes , Transplante de Coração/mortalidade , Humanos , Pessoa de Meia-Idade , Análise de Sobrevida
8.
Transplant Proc ; 37(9): 4071-3, 2005 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16386629

RESUMO

BACKGROUND: Statins are used as first-line drugs against hypercholesterolemia after heart transplantation. Randomized clinical trials have shown that they reduce cholesterol levels, and the incidence of rejection and coronary vasculopathy. Adverse effects have been related to the use of certain statins, high statin dosages, comorbidities, and coadministration with cyclosporine. However, estimation of the risk of adverse effects for a given patient is difficult. The aims of this study were to determine the incidence of various kinds of adverse effect of statins; to evaluate certain potential risk factors; and to assess the efficacy of early response to signs of adverse effects. METHODS: Between April 1991 and December 2003, we retrospectively evaluated 336 heart transplant patients (including 55 women) with regard to the occurrence of possible adverse effects of statins (rhabdomyolysis, myalgia, hepatotoxicity, high CK without muscle symptoms, and others). Resolution on reduction of dosage or discontinuance and/or change of statin were deemed to constitute confirmation of cause. Relations were sought between adverse effects and age, sex, immunosuppressive therapy, kidney failure, body mass index (BMI), arterial hypertension, and diabetes mellitus. RESULTS: Possible adverse events of statins were suffered by 60 patients, all of them men. The causal role of statins was confirmed in 41 (12.2% of all 336): hepatotoxicity was suffered by 13, high CK without muscle ache or weakness by 18, rhabdomyolysis by 5, myalgia by 3, and other effects by 2. The incidence of confirmed statin-related complications was higher among patients with BMI >29 kg/m(2) than among those with lower BMI (P = .055). None of the patients with confirmed statin-related complications needed dialysis, none died, and permanent suspension of statin treatment was only necessary in 13 cases (3.9% of the 336). CONCLUSIONS: Some 10% to 20% of HT patients appear to suffer adverse side effects of initial statin therapy. However, early detection of such effects through diligent clinical and analytical monitoring allows the therapy to be modified in time to minimize the appearance of severe complications. In only a minority of cases permanent suspension of statin therapy is necessary.


Assuntos
Anticolesterolemiantes/uso terapêutico , Transplante de Coração/fisiologia , Adolescente , Adulto , Anticolesterolemiantes/efeitos adversos , Atorvastatina , Índice de Massa Corporal , Rejeição de Enxerto/prevenção & controle , Transplante de Coração/patologia , Ácidos Heptanoicos/uso terapêutico , Humanos , Pessoa de Meia-Idade , Sobrepeso , Pravastatina/uso terapêutico , Pirróis/uso terapêutico , Estudos Retrospectivos , Segurança
9.
Transplantation ; 66(11): 1562-5, 1998 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-9869101

RESUMO

BACKGROUND: Cytomegalovirus (CMV) colitis is a polymorphous disease presenting in immunodepressed patients in a variety of clinical forms that can delay diagnosis and therapy. We report the case of a patient who presented with abdominal pain 4 years after heart transplantation; clinical and x-ray findings were suggestive of a neoplastic or ischemic stenosis, and histopathological examination likewise initially suggested an ischemic etiology. METHODS: Tissue samples were fixed in 10% formaldehyde, embedded in paraffin, cut, and stained with hematoxylin/eosin and periodic acid-Schiff-Alcian Blue. Immunohistochemistry with monoclonal antibodies was performed using an indirect immunoperoxidase method. RESULTS: CMV colitis was eventually diagnosed and resolved with surgery and specific anti-CMV therapy. CONCLUSIONS: CMV colitis should be suspected in any heart transplant patient with signs or symptoms of abdominal pathology, even without classical signs or symptoms of CMV infection. If stenotic lesions are present, surgery may be required not only to remove the obstruction but also to rule out malignancy.


Assuntos
Colite/diagnóstico , Colite/virologia , Neoplasias do Colo/diagnóstico , Infecções por Citomegalovirus , Isquemia/diagnóstico , Isquemia/virologia , Cardiomiopatia Dilatada/cirurgia , Diagnóstico Diferencial , Transplante de Coração/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade
12.
Am J Cardiol ; 77(10): 875-7, 1996 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-8623745

RESUMO

We studied the relation between angiotensin-converting enzyme insertion/deletion gene polymorphism and restenosis in Caucasian patients who underwent coronary angioplasty for management of unstable angina pectoris. Our results indicate that, in contrast to previous reports in Japanese patients, no association exists between angiotensin-converting enzyme gene polymorphism and the development of restenosis in Caucasian patients with acute coronary syndromes.)


Assuntos
Angina Instável/enzimologia , Elementos de DNA Transponíveis , Deleção de Genes , Peptidil Dipeptidase A/genética , Polimorfismo Genético , Idoso , Angina Instável/genética , Angina Instável/cirurgia , Angioplastia Coronária com Balão , Estudos de Casos e Controles , Constrição Patológica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva
13.
Chest ; 114(4): 1075-82, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9792580

RESUMO

This study investigated the effect of dynamic exercise on mitral regurgitation (MR) as assessed by color flow Doppler imaging and tested the hypothesis that MR increases in patients with left ventricular (LV) function worsening during exercise. We studied 513 patients (390 men, 123 women:mean age [+/-1 SD] 58+/-11 years) referred for treadmill exercise echocardiography (EE) to evaluate known or suspected coronary artery disease. Normal EE was seen in 182 (36%), necrosis in 131 (25%), and ischemic response (with or without necrosis) in 200 (39%). MR assessment was performed at rest and immediately postexercise, on the basis of the mosaic area. At rest, mild MR (<3 cm2) was seen in 138; moderate (3 to 6 cm2) was seen in 21; and severe (>6 cm2) was seen in 5. Forty-two patients developed new, mild (n=35), moderate (n=6), or severe (n=1) MR during exercise. Patients were assigned to three groups: group 1--new or increased MR from rest to exercise (n=70); group 2--MR at rest unchanged or decreased (n=136); and group 3--no MR at rest and exercise (n=307). At rest, LV ejection fraction (EF) and wall motion score index (WMSI) were similar in group 1 and group 2 but improved in group 3 (EF: group 1, 51+/-11%; group 2, 53+/-10%; group 3, 56+/-8%, p<0.001 vs group 1 and group 2. WMSI: group 1, 1.3+/-0.3; group 2, 1.3+/-0.4; group 3, 1.1+/-0.2, p<0.01 vs group 1, p<0.001 vs group 2). At exercise, EF and WMSI were impaired in group 1 (EF: group 1, 52+/-14%; group 2, 58+/-15%; group 3, 64+/-11%, p<0.001 vs group 1 and group 2; p<0.05 between group 1 and group 2. WMSI: group 1, 1.5+/-0.4; group 2, 1.4+/-0.4; group 3, 1.2+/-0.3, p<0.001 vs group 1 and group 2, p<0.05 between group 1 and group 2). An ischemic response was common in group 1 (67% vs 35% in group 2 and 34% in group 3, p<0.001 between group 1 and group 3 and between group 1 and group 2). Accordingly, in group 1 patients, exercise time was diminished (7.3+/-2.7 vs 8.4+/-2.7 in group 2 and 9.3+/-2.4 in group 3, p<0.01, between group 1 and group 2, p<0.001 between group 1 and group 3, p<0.001 between group 2 and group 3) and the number of severely narrowed coronary vessels greater (2.4+/-0.9 vs 1.7+/-1.0 in group 2 and 1.7+/-1.0 in group 3). In conclusion, MR does not increase in most patients submitted to dynamic exercise echocardiography. However, if MR develops, severe LV function worsening should be suspected.


Assuntos
Doença das Coronárias/fisiopatologia , Exercício Físico/fisiologia , Insuficiência da Valva Mitral/fisiopatologia , Adulto , Idoso , Velocidade do Fluxo Sanguíneo , Doença das Coronárias/complicações , Doença das Coronárias/diagnóstico por imagem , Ecocardiografia Doppler em Cores , Eletrocardiografia , Teste de Esforço , Feminino , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Insuficiência da Valva Mitral/complicações , Insuficiência da Valva Mitral/diagnóstico por imagem , Contração Miocárdica , Índice de Gravidade de Doença , Volume Sistólico
14.
J Thorac Cardiovasc Surg ; 112(3): 584-9, 1996 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-8800143

RESUMO

A new cardiac transplantation technique that preserves the shape of the left atrium and leaves the right atrium intact has been introduced. To compare the new and the standard techniques, we studied cardiac physiology with Doppler echocardiography and catheterization in 26 patients who underwent operation with the standard technique (group A) and I1 who underwent operation with the new technique (group B). Right atrial dimensions were significantly lower in group B (right atrial area index 8.4 +/- 1.5 vs 14.5 +/- 1.9 cm2/m2, p < 0.001), whereas left atrial dimensions were slightly lower (left atrial area index 10.8 +/- 2.0 vs 16.4 +/- 7.0 cm2/m2, p = 0.07). Right atrial contraction, as reflected by peak late tricuspid velocity, was greater in group B (37 +/- 15 vs 30 +/- 10 cm/sec, p < 0.05). The subsequent systolic vena caval flow-velocity integral was also greater in group B at all respiratory phases (inspiration 10.0 +/- 4.0 vs 5.2 +/- 4.0 cm, p < 0.001; expiration 4.8 +/- 1.9 vs 2.9 +/- 1.4 cm, p < 0.001; apnea 5.3 +/- 2.0 vs 2.9 +/- 1.9 cm, p < 0.001) suggesting better atrial relaxation. Filling pressures on the right side of the heart were lower in group B (mean right atrial pressure 5.5 +/- 2.4 vs 6.6 +/- 2.8 mm Hg, p = 0.1; right atrial A wave 6.0 +/- 3.1 vs 8.3 +/- 3.2 mm Hg, p < 0.01; right atrial V wave 6.8 +/- 3.1 vs 9.2 +/- 3.2 mm Hg, p < 0.01; right ventricular end-diastolic pressure 5.6 +/- 3.2 vs 7.3 +/- 2.9 mm Hg, p < 0.05); however, no significant differences were found in left ventricular end-diastolic pressure or cardiac index. We conclude that patients undergoing the new technique exhibit cardiac physiologic improvements. Follow-up study is indicated to ascertain whether this finding implies improved long-term prognosis.


Assuntos
Transplante de Coração/métodos , Transplante de Coração/fisiologia , Adulto , Idoso , Apneia/fisiopatologia , Função Atrial , Velocidade do Fluxo Sanguíneo , Pressão Sanguínea , Cateterismo Cardíaco , Débito Cardíaco , Diástole , Ecocardiografia Doppler , Seguimentos , Átrios do Coração/anatomia & histologia , Átrios do Coração/diagnóstico por imagem , Átrios do Coração/cirurgia , Transplante de Coração/diagnóstico por imagem , Humanos , Pessoa de Meia-Idade , Contração Miocárdica , Prognóstico , Fluxo Sanguíneo Regional , Respiração , Sístole , Valva Tricúspide/fisiologia , Veia Cava Superior/fisiologia , Pressão Ventricular
15.
J Heart Lung Transplant ; 19(2): 134-8, 2000 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10703688

RESUMO

BACKGROUND: The role of enterovirus infection in the pathogenesis of dilated cardiomyopathy (DCM) remains unclear. The objective of this study was to determine the prevalence of enterovirus in hearts explanted from patients with DCM and to compare it with enterovirus prevalence in hearts explanted from patients with other etiologies and in healthy donor hearts. METHODS: A total of 138 cardiac samples were analyzed, 70 from heart donors and 68 from transplant recipients (22 with DCM). A highly sensitive enterovirus-specific nested RT-PCR was used to test for enterovirus. RESULTS: All tests were negative except for one positive result that was attributed to carryover because sequencing of the amplification product showed it to be identical to the positive control. CONCLUSIONS: In this study the sample of explanted hearts nested RT-PCR showed no evidence of the presence of enteroviral RNA. This suggests that if enterovirus had a role in the genesis of DCM, it does not require or lead to the persistence of the virus in myocardial tissue.


Assuntos
Cardiomiopatia Dilatada/virologia , Enterovirus/isolamento & purificação , Coração/virologia , RNA Viral/isolamento & purificação , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase
16.
J Am Soc Echocardiogr ; 12(12): 1073-9, 1999 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-10588783

RESUMO

OBJECTIVES: We sought to compare the feasibility and accuracy of peak treadmill exercise echocardiography versus postexercise echocardiography imaging. BACKGROUND: Although peak exercise echocardiography has been reported for both supine and orthostatic bicycle exercise and has shown higher sensitivity than postexercise imaging, acquiring images at peak exercise with treadmill has not been explored. METHODS: Peak and post-treadmill exercise echocardiography and coronary angiography were performed on 89 patients with known or suspected coronary artery disease. Positive exercise echocardiography was defined as necrosis or ischemic response. Positive coronary angiography was defined as >/=1 diseased vessels (>/=50% luminal narrowing). Images were analyzed in a blind manner by an expert observer. RESULTS: Postexercise images were acquired within 80 seconds after exercise (40 +/- 14). Mean heart rate (bpm) was 139 +/- 22 at peak versus 118 +/- 25 at postexercise imaging (P <.001). Interpretable peak and postexercise images were obtained for all 89 patients. Of the 72 classified as having positive exercise echocardiography, 23 had new regional wall motion abnormality at peak (21 with positive angiography), which resolved at postexercise imaging. Sensitivity was higher with peak than with postexercise imaging (94% vs 73%, P <.001). Specificity was similar (68% vs 79%), as was predictive positive value (92% vs 93%). Negative predictive value was again higher with peak imaging (76% vs 44%, P <.05). Total accuracy was higher with peak imaging (89% vs 74%, P <.05). CONCLUSIONS: Peak treadmill exercise echocardiography is technically feasible and has higher sensitivity and accuracy than post-treadmill exercise echocardiography. Therefore in the clinical setting peak exercise echocardiography should be performed to diagnose ischemia.


Assuntos
Doença das Coronárias/diagnóstico por imagem , Ecocardiografia/métodos , Exercício Físico , Angiografia Coronária , Doença das Coronárias/fisiopatologia , Diagnóstico Diferencial , Teste de Esforço , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Contração Miocárdica , Variações Dependentes do Observador , Valor Preditivo dos Testes , Estudos Retrospectivos , Volume Sistólico
17.
Diabetes Res Clin Pract ; 30(2): 137-42, 1995 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-8833635

RESUMO

A cross-sectional study of the prevalence and distribution of diabetes among 40- to 69-year olds in Galicia (NW Spain) is presented. A (R)Reflotron system was used to measure the capillary fasting glucaemia in 1275 subjects randomly chosen from the electoral roll, who also answered a short questionnaire and were weighed and measured. The prevalence of diabetes was 7.5% regardless of sex or habitat (urban or rural), and increased significantly with age. These data are in keeping with the scant available information from other parts of Spain and the world in general. The lack of difference between urban and rural habitats was unexpected in view of previously reported dietary differences between both areas.


Assuntos
Diabetes Mellitus/epidemiologia , Adulto , Distribuição por Idade , Idoso , Glicemia/análise , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade , Prevalência , População Rural/estatística & dados numéricos , Distribuição por Sexo , Espanha/epidemiologia , População Urbana/estatística & dados numéricos
18.
Transplant Proc ; 35(5): 1994-5, 2003 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12962873

RESUMO

Acute allograft rejection (AAR) is an important cause of graft loss following heart transplantation (HT). Increasing evidence shows that CD40-CD154 interactions play a central role in the immune processes leading to AAR. In this study we investigated the expression of CD40 and CD154 on peripheral blood cells from HT patients so as to determine possible association with AAR. Using two-color flow cytometry, we determined the expression of CD40 and CD154 in 102 samples of peripheral blood taken from 53 adult HT patients and in 17 samples from healthy adult volunteers. Samples from patients were obtained at the same time as endomyocardial biopsy was performed. We analyzed the relationships between the expression of these molecules and the following parameters: immunosuppressive treatment (cyclosporine vs tacrolimus), gender, age, time post-HT, and AAR (indicated by an ISHLT rating > or =3A). The percentages of HT patients' blood samples showing above-normal CD40 or CD154 expression did not differ significantly from those of controls. The percentage of patients' samples showing above-normal CD40 expression decreased with time after HT. Expression of these molecules was not above normal during rejection episodes, and for neither was there any statistically significant correlation between expression level and the immunosuppressor drug.


Assuntos
Antígenos CD40/sangue , Ciclosporina/uso terapêutico , Rejeição de Enxerto/imunologia , Transplante de Coração/imunologia , Imunossupressores/uso terapêutico , Antígenos Comuns de Leucócito/sangue , Tacrolimo/uso terapêutico , Adulto , Antígenos CD/sangue , Biópsia , Transplante de Coração/patologia , Humanos , Linfócitos/imunologia , Pessoa de Meia-Idade
19.
Transplant Proc ; 36(3): 778-9, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15110660

RESUMO

Acute dysfunction of cardiac allograft without evidence of cellular rejection is a potentially fatal complication of heart transplantation that suggests a humoral origin. In clinical practice, humoral rejection (HR) is suspected when there is evidence of severe allograft dysfunction but endomyocardial biopsy (EMB) shows no evidence of cellular rejection. Between April 1991 and August 2003, 12 patients (2.74%) among 438 heart transplants displayed this condition. Time post-heart transplant (HT) was 21.3 +/- 24.7 months (range 2 to 72 months). Immunofluorescence studies using classic markers were negative. All patients were treated with methylprednisolone "bolus" and plasmapheresis until clinical recovery, after which their immunosuppressive regimens were modified. Eleven of the 12 patients recovered satisfactory allograft function. In this series the incidence of suspected HR was low. Unlike other studies, we observed HR not only soon but also even years after HT. Plasmapheresis seems to be an effective treatment.


Assuntos
Rejeição de Enxerto/diagnóstico , Transplante de Coração/imunologia , Transplante Homólogo/imunologia , Adulto , Biópsia , Feminino , Rejeição de Enxerto/terapia , Transplante de Coração/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Plasmaferese , Estudos Retrospectivos , Transplante Homólogo/patologia , Resultado do Tratamento
20.
Transplant Proc ; 35(5): 1957-8, 2003 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12962862

RESUMO

BACKGROUND: HAV syndrome, the combination of hypotension, acidosis and vasodilation (HAV), is a serious postoperative complication after heart transplantation (HT). Its etiology and prognosis are poorly understood. AIM: To determine the incidence and prognosis of post-HT HAV syndrome and examine possible risk factors. METHODS: Retrospective examination of the records of 85 consecutive patients who underwent HT between December 1999 and June 2002 sought the HAV criteria: systolic BP <85 mm Hg plus HCO3 <19 mEq/l whole excluding cardiogenic, hypovolemic and septic shock. Donor variables included sex, age, weight, height, cause of death, time in ICU, and ischemic time; while recipient variables, sex, age, weight, height, etiology of cardiopathy, previous cardiopulmonary bypass surgery, preoperative amiodarone, beta-blockers, catecholamines, mechanical ventilation or intra aortic balloon pump (IABP), RVP, time on waiting list, pump time, reoperations, polytransfusion, preoperative creatinine, GOT, GPT and GGT, induction with OKT3 or anti-CD25, bypass-to-HAV time, duration of catecholamine treatment, and 1 month survival after HT. RESULTS: The 11 HAV cases (13%) appeared between 1 and 72 h after HT (75% in the first hour). Catecholamines were used for 1 to 6 days; control was achieved within 48 h in 58% of cases. Two HAV patients (18%) died within the first month versus six non-HAV patients (8.1%) (P=.275). Only polytransfusion showed more than a borderline value to predict HAV syndrome. CONCLUSIONS: HAV syndrome has an incidence of 13% and a mortality of 18% within 1 month post-HT. The only likely risk factor is polytransfusion.


Assuntos
Acidose/etiologia , Transplante de Coração/efeitos adversos , Hipotensão/etiologia , Complicações Pós-Operatórias/epidemiologia , Vasodilatação , Acidose/epidemiologia , Antagonistas Adrenérgicos beta/uso terapêutico , Análise de Variância , Bicarbonatos/sangue , Feminino , Humanos , Hipotensão/epidemiologia , Incidência , Masculino , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Síndrome , Fatores de Tempo , Vasodilatação/efeitos dos fármacos
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