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1.
Circulation ; 122(19): 1928-36, 2010 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-20975002

RESUMO

BACKGROUND: Patients with severe aortic stenosis and reduced left ventricular ejection fraction (LVEF) have a poor prognosis with conservative therapy but a high operative mortality when treated surgically. Recently, transcatheter aortic valve implantation (TAVI) has emerged as an alternative to surgical aortic valve replacement (SAVR) for patients considered at high or prohibitive operative risk. The objective of this study was to compare TAVI and SAVR with respect to postoperative recovery of LVEF in patients with severe aortic stenosis and reduced LV systolic function. METHODS AND RESULTS: Echocardiographic data were prospectively collected before and after the procedure in 200 patients undergoing SAVR and 83 patients undergoing TAVI for severe aortic stenosis (aortic valve area ≤1 cm(2)) with reduced LV systolic function (LVEF ≤50%). TAVI patients were significantly older (81±8 versus 70±10 years; P<0.0001) and had more comorbidities compared with SAVR patients. Despite similar baseline LVEF (34±11% versus 34±10%), TAVI patients had better recovery of LVEF compared with SAVR patients (ΔLVEF, 14±15% versus 7±11%; P=0.005). At the 1-year follow-up, 58% of TAVI patients had a normalization of LVEF (>50%) as opposed to 20% in the SAVR group. On multivariable analysis, female gender (P=0.004), lower LVEF at baseline (P=0.005), absence of atrial fibrillation (P=0.01), TAVI (P=0.007), and larger increase in aortic valve area after the procedure (P=0.01) were independently associated with better recovery of LVEF. CONCLUSION: In patients with severe aortic stenosis and depressed LV systolic function, TAVI is associated with better LVEF recovery compared with SAVR. TAVI may provide an interesting alternative to SAVR in patients with depressed LV systolic function considered at high surgical risk.


Assuntos
Estenose da Valva Aórtica/cirurgia , Implante de Prótese de Valva Cardíaca/métodos , Volume Sistólico/fisiologia , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/transplante , Estenose da Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/fisiopatologia , Fibrilação Atrial/diagnóstico por imagem , Fibrilação Atrial/mortalidade , Fibrilação Atrial/fisiopatologia , Fibrilação Atrial/cirurgia , Bioprótese , Ecocardiografia/métodos , Feminino , Próteses Valvulares Cardíacas , Implante de Prótese de Valva Cardíaca/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/mortalidade , Insuficiência da Valva Mitral/fisiopatologia , Insuficiência da Valva Mitral/cirurgia , Infarto do Miocárdio/complicações , Infarto do Miocárdio/epidemiologia , Caracteres Sexuais , Acidente Vascular Cerebral/epidemiologia , Acidente Vascular Cerebral/mortalidade , Resultado do Tratamento , Função Ventricular Esquerda/fisiologia
2.
Int J Surg ; 72: 224-229, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31734256

RESUMO

BACKGROUND: While the number of laparoscopic liver resections (LLRs) is increasing worldwide, its impact on physical recovery remains unclear. We hypothesized that LLR is associated with better physical recovery than open liver resection (OLR). To address this question, we investigated the impact of laparoscopic liver resection compared to open liver resection on physical recovery in a prospective trial. METHODS: Twenty-one patients who underwent LR were included in this study (11 OLR (52.4%) and 10 LLR (47.6%), respectively). Physical recovery was measured by bicycle stress testing at months 1 and 6 after surgery and compared to preoperative stress testing. Standardized performance for bicycle stress testing was calculated based on age, sex, height and weight. Physical recovery was compared between groups as change of performance (%). RESULTS: Median age was 58 years (Inter Quartile Range (IQR): 44-68), and the main indications for LR were colorectal liver metastases (n = 10; 45%) and hepatocellular carcinoma (n = 6; 27%). The one-month change of performance level was -8% (IQR: -12-1) compared to the preoperative level with no significant difference between open and laparoscopic LR (LLR: -8% (-11 - 1); OLR: -6% (-12 - 4), p = 0.833). Furthermore, 6 months postoperatively, patients in both groups had not reached back their preoperative performance level (LLR: -5.7% (-8.4 - 18.6); OLR -4. 8% (-12.6 - 1.9), p = 0.833). CONCLUSION: In this study, we report an impaired physical recovery after LR that was not fully restored 6 months after surgery. There was no significant difference between open and laparoscopic LR in terms of bicycle stress testing. Limitations of the study include the limited sample size and differences, albeit non-statistically significant, in the baseline characteristics of the two groups. To rule out a possible role of age or underlying indication for liver resection on physical recovery, future randomized controlled trials need to be performed.


Assuntos
Hepatectomia/métodos , Laparoscopia/métodos , Adulto , Idoso , Carcinoma Hepatocelular/cirurgia , Feminino , Humanos , Neoplasias Hepáticas/cirurgia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Recuperação de Função Fisiológica
3.
J Am Coll Cardiol ; 38(2): 436-42, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11499735

RESUMO

OBJECTIVES: The study assessed the relative predictive potency of neurohumoral factors in patients with advanced left ventricular (LV) dysfunction during neurohumoral blocking therapy. BACKGROUND: The course of heart failure is characterized by progressive LV deterioration associated with an increase in cardiac (natriuretic peptides) and predominantly extracardiac (norepinephrine, big endothelin [big ET]) hormone plasma levels. METHODS: Plasma hormones were measured at baseline and months 3, 6, 12 and 24 in 91 patients with heart failure (left ventricular ejection fraction [LVEF] <25%) receiving 40 mg enalapril/day and double-blind atenolol (50 to 100 mg/day) or placebo. After the double-blind study phase, patients were followed up to four years. Stepwise multivariate regression analyses were performed with 10 variables (age, etiology, LVEF, symptom class, atenolol/placebo, norepinephrine, big ET, log aminoterminal atrial natriuretic peptide, log aminoterminal B-type natriuretic peptide [N-BNP] and log B-type natriuretic peptide [BNP]). During the study, the last values prior to patient death were used, and in survivors the last hormone level, New York Heart Association class and LVEF at month 24 were used. RESULTS: Thirty-one patients died from a cardiovascular cause during follow-up. At baseline, log BNP plasma level (x2 = 13.9, p = 0.0002), treatment allocation (x2 = 9.5, p = 0.002) and LVEF (x2 = 5.6, p = 0.017) were independently related to mortality. During the study, log BNP plasma level (x2 = 21.3, p = 0.0001) remained the strongest predictive marker, with LVEF (x2 = 11.2, p = 0.0008) log N-BNP plasma level (x2 = 8.9, p = 0.0027) and treatment allocation (x2 = 6.4, p = 0.0109) providing additional independent information. CONCLUSIONS: In patients with advanced LV dysfunction receiving high-dose angiotensin-converting enzyme inhibitors and beta-blocker therapy BNP and N-BNP plasma levels are both independently related to mortality. This observation highlights the importance of these hormones and implies that they will likely emerge as a very useful blood test for detection of the progression of heart failure, even in the face of neurohumoral blocking therapy.


Assuntos
Antagonistas Adrenérgicos beta/uso terapêutico , Atenolol/uso terapêutico , Hormônios/sangue , Disfunção Ventricular Esquerda/tratamento farmacológico , Disfunção Ventricular Esquerda/mortalidade , Fator Natriurético Atrial/sangue , Biomarcadores/sangue , Método Duplo-Cego , Endotelina-1 , Endotelinas/sangue , Feminino , Insuficiência Cardíaca/sangue , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Norepinefrina/sangue , Placebos , Prognóstico , Modelos de Riscos Proporcionais , Precursores de Proteínas/sangue , Distribuição Aleatória , Fatores de Risco , Taxa de Sobrevida , Resultado do Tratamento , Disfunção Ventricular Esquerda/sangue
4.
Arch Intern Med ; 153(23): 2696-700, 1993 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-8250666

RESUMO

BACKGROUND: Lyme borreliosis is a tick-borne multisystem disorder that may present as self-limiting early or persistent chronic diseases of the skin, nervous system, joints, heart, and other organs. Cardiac involvement has mainly been reported as acute atrioventricular conduction disturbances or transient ventricular dysfunction. METHODS AND RESULTS: We treated a patient with clinical signs of acute myopericarditis and serologic evidence of Lyme borreliosis confirmed by silver staining of endomyocardial biopsy specimens and indium 111-monoclonal antimyosin antibody scan, which we believe has not been reported previously. Additionally, magnetic resonance imaging revealed epicardial and myocardial areas of increased intensity. CONCLUSION: Indium 111-monoclonal antimyosin antibody scanning and magnetic resonance imaging might play an additional important role in assessing and confirming the diagnosis of Lyme carditis in the presence of clinical symptoms and positive serologic findings.


Assuntos
Doença de Lyme/diagnóstico , Miocardite/diagnóstico , Pericardite/diagnóstico , Radioimunodetecção , Doença Aguda , Adulto , Anticorpos Monoclonais , Biópsia , Endocárdio/patologia , Humanos , Radioisótopos de Índio , Doença de Lyme/diagnóstico por imagem , Imageamento por Ressonância Magnética , Masculino , Miocardite/diagnóstico por imagem , Miocardite/microbiologia , Miosinas/imunologia , Pericardite/diagnóstico por imagem , Pericardite/microbiologia
5.
J Clin Endocrinol Metab ; 82(1): 106-12, 1997 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8989242

RESUMO

Patients with primary hyperparathyroidism (PHPT) show a high incidence of left ventricular hypertrophy, cardiac calcific deposits in the myocardium, and/or aortic and mitral valve calcification and thus may carry an increased risk of death from circulatory diseases. This prospective study was designed to assess an effect of parathyroidectomy on cardiac abnormalities of patients with PHPT. Echocardiography was used to evaluate the mechanical performance of the heart muscle, the thickness of the left ventricular wall, myocardial calcific deposits, and valvular calcifications within 12 and 41 months after parathyroidectomy. In a blinded fashion, aortic and mitral value calcifications were determined in 46% and 39% of patients with PHPT. Calcific deposits in the myocardium were found in 74% of patients. Follow-up studies after parathyroidectomy disclosed no evidence of progression of these calcifications. Before operation left ventricular hypertrophy was detected in 82%. After parathyroidectomy and 41 months of normocalcemia and normal PTH concentrations, a regression of hypertrophy of the interventricular septum and the posterior wall by -6% and -19% (P < 0.05) was observed. Subgroup analysis disclosed the most impressive long-term reduction of left ventricular hypertrophy in patients without a history of hypertension (-11% and -21%; P < 0.05 and P < 0.005); no changes were determined in 9 patients who developed secondary hyperparathyroidism after operation. The present data show a high incidence of left ventricular hypertrophy and aortic and/or mitral valve calcifications in patients with PHPT. Follow-up at 1 year and at 41 months after successful parathyroidectomy disclose regression of hypertrophy. Our results give evidence that parathyroid hormone per se plays an important role in the maintainance of myocardial hypertrophy. Post-surgical restoration of normocalcemia and normalization of parathyroid hormone valvular sclerosis persists without evidence of progression. We further conclude that patients with PHPT and parathyroidectomy are at low risk for the development of severe aortic and mitral valve stenosis within this period of time.


Assuntos
Cardiopatias/complicações , Hiperparatireoidismo/complicações , Idoso , Idoso de 80 Anos ou mais , Calcinose/complicações , Cálcio/sangue , Cardiomiopatias/complicações , Ecocardiografia , Feminino , Cardiopatias/patologia , Doenças das Valvas Cardíacas/complicações , Ventrículos do Coração/patologia , Humanos , Hiperparatireoidismo/patologia , Hiperparatireoidismo/cirurgia , Hipertrofia Ventricular Esquerda/complicações , Hipertrofia Ventricular Esquerda/patologia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Miocárdio/patologia , Paratireoidectomia , Estudos Prospectivos , Disfunção Ventricular Esquerda/complicações , Disfunção Ventricular Esquerda/patologia
6.
Am J Med ; 95(2): 197-202, 1993 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-8356983

RESUMO

PURPOSE: This prospective study was designed to assess the effect of primary hyperparathyroidism on heart muscle, valves, and myocardial function. Echocardiography was used to evaluate changes in mechanical performance, the thickness of the left ventricular wall, myocardial calcific deposits, and valvular calcifications in patients with primary hyperparathyroidism. METHODS: Echocardiography was performed in 54 patients with hyperparathyroidism prior to surgery and 12 +/- 2 months after successful parathyroidectomy. A matched control group was followed for comparison. RESULTS: In a blinded fashion, aortic and mitral valve calcifications were detected in 63% and 49% of patients with primary hyperparathyroidism (controls: 12% and 15%, respectively). Calcific deposits in the myocardium were found in 69% of patients with hyperparathyroidism and 17% of the control subjects. After parathyroidectomy and 12 months of normocalcemia, a significant regression of left ventricular hypertrophy (p < 0.001) was observed. CONCLUSIONS: The present data show a high incidence of left ventricular hypertrophy, calcific deposits in the myocardium, and/or aortic and mitral valve calcification in patients with primary hyperparathyroidism. A 1-year follow-up after parathyroidectomy (and restoration of normocalcemia) discloses regression of hypertrophy, while calcifications persist without evidence of progression.


Assuntos
Calcinose/etiologia , Cardiomiopatias/etiologia , Hiperparatireoidismo/complicações , Hiperparatireoidismo/cirurgia , Hipertrofia Ventricular Esquerda/etiologia , Paratireoidectomia , Adulto , Idoso , Calcinose/diagnóstico por imagem , Calcinose/epidemiologia , Cardiomiopatias/diagnóstico por imagem , Cardiomiopatias/epidemiologia , Ecocardiografia , Feminino , Seguimentos , Humanos , Hipertrofia Ventricular Esquerda/diagnóstico por imagem , Hipertrofia Ventricular Esquerda/epidemiologia , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Indução de Remissão , Resultado do Tratamento
7.
Transplantation ; 71(11): 1597-600, 2001 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-11435971

RESUMO

BACKGROUND: It is unclear whether patients with heart failure and renal insufficiency should receive a simultaneous heart and kidney transplant or whether a single heart transplantation is sufficient to restore native renal function. METHODS: We analyzed the renal plasma flow and glomerular filtration of the native and transplant kidneys in eight patients long term after simultaneous heart and kidney transplantation using a dynamic MAG3 radioisotope scan and serum creatinine determinations. All subjects had been hemodialysis dependent before transplantation. Seven patients suffered from an intrinsic renal disease that were diabetic nephropathy in three cases, small fibrotic kidneys of undetermined origin in two cases, one lupus nephritis, and cyclosporine nephrotoxicity in one patient who had a previous heart transplant. In one patient renal insufficiency was considered to be solely due to renal hypoperfusion because no intrinsic renal disease could be detected. RESULTS: All patients were on cyclosporine-based triple immunosuppression, transplanted for 4 to 10 years, exhibited cardiac ejection fractions of more than 50% and had normal serum creatinine values. Radioisotopic scan showed no function of the native kidneys in all seven patients with intrinsic renal disease but exhibited normal function of the native kidneys as well as the renal transplant in the patient without intrinsic kidney disease before transplantation. CONCLUSIONS: These data suggest that a simultaneous heart and kidney transplantation is necessary in patients with cardiomyopathy and renal insufficiency due to primary kidney disease, but not in those with hemodynamically mediated renal failure, even if an immunosuppressive regimen with calcineurin inhibitors is used.


Assuntos
Transplante de Coração , Transplante de Rim , Rim/fisiopatologia , Idoso , Ciclosporina/uso terapêutico , Feminino , Taxa de Filtração Glomerular , Humanos , Imunossupressores/uso terapêutico , Rim/diagnóstico por imagem , Nefropatias/fisiopatologia , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Cintilografia , Circulação Renal , Fatores de Tempo
8.
Am J Cardiol ; 71(15): 1293-9, 1993 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-8498369

RESUMO

Plasma endothelin concentrations were evaluated in 53 chronic, congestive heart failure (CHF) patients with or without history of systemic hypertension, as well as in 9 with hypertension only and in 22 healthy control subjects. Plasma renin, aldosterone and atrial natriuretic peptide, as well as clinical and hemodynamic data were determined. In patients with CHF, big endothelin-1 was, independent of hypertension history, significantly greater than in hypertensive patients with normal cardiac function and in control subjects (both p < 0.0001). Patients with severe CHF had significantly greater big endothelin-1 values than did those with moderate CHF. During 12-month follow-up, 11 patients with CHF underwent heart transplantation, and 9 died; these patients had significantly greater big endothelin-1 concentrations than did the 33 clinically stable patients (p < 0.001). Big endothelin-1 and atrial natriuretic peptide correlated with right atrial pressure, pulmonary capillary wedge pressure, left ventricular ejection fraction, effort capacity and severity of CHF (New York Heart Association functional class).


Assuntos
Endotelinas/sangue , Insuficiência Cardíaca/sangue , Hipertensão/sangue , Adulto , Idoso , Aldosterona/sangue , Fator Natriurético Atrial/sangue , Estudos de Casos e Controles , Feminino , Seguimentos , Insuficiência Cardíaca/complicações , Insuficiência Cardíaca/fisiopatologia , Hemodinâmica , Humanos , Hipertensão/complicações , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Prognóstico , Renina/sangue
9.
Wien Klin Wochenschr ; 105(12): 339-41, 1993.
Artigo em Alemão | MEDLINE | ID: mdl-8333202

RESUMO

Patients with hypercalcaemia have a markedly greater risk of dying from cardiovascular disease than normocalcaemic age- and sex-matched controls. Cardiovascular findings in hypercalcaemic patients frequently include characteristic ECG changes, left ventricular hypertrophy, and myocardial calcific deposits. Furthermore, these subjects have a higher incidence of angina pectoris and calcification of the heart valves. Baseline screening for hypercalcaemia should include ECG and echocardiography.


Assuntos
Cardiopatias/fisiopatologia , Hipercalcemia/fisiopatologia , Angina Pectoris/fisiopatologia , Cálcio/sangue , Eletrocardiografia , Humanos , Hipertrofia Ventricular Esquerda/fisiopatologia , Contração Miocárdica/fisiologia , Fatores de Risco
11.
Wien Med Wochenschr ; 145(7-8): 196-8, 1995.
Artigo em Alemão | MEDLINE | ID: mdl-7610674

RESUMO

According to current opinion there is acute, self-limiting Lyme carditis, and chronic Lyme carditis. Acute Lyme carditis manifests mostly as transient conduction disorders of the heart (e.g. AV-blocking I to III), and as supraventricular and ventricular rhythm disturbances, pericarditis, myocarditis, and pancarditis in single cases. Chronic Lyme carditis is defined as a case of chronic heart failure confirmed by positive serology and endomyocardial biopsy. Anamnestic aid is rare. Neither tick-bites nor preceding or accompanying erythema chronicum migrans are constantly reported. Seropositivity and control of its specificity by western blot are indicative but no etiological proof. Even histological detection of spirochetes in endomyocardial tissue or cultivation of borrelia from endomyocardial biopsy are no final etiological proof of the respective cardial disorder. Those findings, however, are an indication for antibiotic treatment. According to the severity of the disorder, antibiotics are administered orally (penicillin or derivatives) or parenterally with penicillin or cephalosporins of the 3rd generation over 4 and 2 weeks, respectively.


Assuntos
Doença de Lyme/diagnóstico , Miocardite/diagnóstico , Anticorpos Antibacterianos/sangue , Biópsia , Grupo Borrelia Burgdorferi/imunologia , Cefalosporinas/uso terapêutico , Diagnóstico Diferencial , Endocárdio/patologia , Humanos , Doença de Lyme/tratamento farmacológico , Miocardite/tratamento farmacológico , Miocárdio/patologia , Penicilinas/uso terapêutico
12.
Z Kardiol ; 89(11): 1046-52, 2000 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-11149272

RESUMO

Heart involvement of Lyme disease occurs in about 4-10% of patients with Lyme borreliosis. The most common manifestation is acute, self-limiting Lyme carditis, which manifests mostly as transient conduction disorders of the heart, pericarditis and myocarditis. Laboratory tests (ELISA, immunoblotting and PCR) usually have limited sensitivity and specificity, and criteria of performance and interpretation have not yet been fully evaluated. Therefore the laboratory evidence should only be interpreted in conjunction with other clinical and diagnostic features. Recently there has been convincing evidence published that long standing dilated cardiomyopathy in many cases is associated with a chronic Borrelia burgdorferi (BB) infection. Several studies showed a higher prevalence of BB antibodies in patients with severe heart failure in endemic areas (e.g., 26% versus 8% in healthy individuals). The isolation of spirochetes from the myocardium gave further evidence that BB may cause chronic heart muscle disease. In several studies antimicrobial treatment showed an improvement of the left ventricular function in patients with dilated cardiomyopathy associated with BB. However the duration of dilated cardiomyopathy before treatment plays an important part in the clinical outcome of BB-associated chronic myocarditis.


Assuntos
Cardiomiopatias/diagnóstico , Doença de Lyme/diagnóstico , Miocardite/diagnóstico , Diagnóstico Diferencial , Humanos , Prognóstico
13.
Cardiology ; 85(6): 415-7, 1994.
Artigo em Inglês | MEDLINE | ID: mdl-7697677

RESUMO

Lyme disease is a multisystem disease, which can involve the heart causing myopericarditis. We describe 1 patient with serological and histological evidence of Lyme borreliosis and demonstration of pathologic myocardial signal enhancement in magnetic resonance imaging.


Assuntos
Doença de Lyme/diagnóstico , Imageamento por Ressonância Magnética , Miocardite/diagnóstico , Doença Aguda , Adulto , Humanos , Masculino
14.
Eur Heart J ; 13(7): 902-7, 1992 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-1644079

RESUMO

Depressed heart rate variation has been shown to predict a high mortality rate in patients with severe congestive heart failure. To determine whether the degree of altered heart rate correlates with the clinical state, 24-h Holter monitoring was performed in 21 patients (mean ejection fraction: 18 +/- 11%) at baseline and after 6 months of oral therapy. At baseline, the overall 24-h heart rate variation and night/day heart rate ratio was reduced, depending on the NYHA functional class. The typical morphology of R-R interval histograms was a sensitive marker of the clinical state at baseline: the higher the NYHA class, the smaller the R-R interval variability and standard deviation of R-R intervals (total variability NYHA III versus II: P less than 0.05). Clinical deterioration after 6 months (n = 8) was accompanied by a tendency to further shortening of the mean total R-R interval variability (676 +/- 34 to 586 +/- 25 ms). This was shown in three patients, who were reclassified to NYHA class IV. In stable patients (n = 5) and those with clinical improvement (n = 8) no significant change in R-R variability was observed. It is concluded that variations in R-R interval histogram shapes correspond to different NYHA functional classes. While severe clinical disease progression may be associated with further reductions in the heart rate variability, improvement in the clinical state of congestive heart failure is not necessarily associated with changes in heart rate behaviour.


Assuntos
Cardiotônicos/uso terapêutico , Insuficiência Cardíaca/fisiopatologia , Frequência Cardíaca/fisiologia , Adulto , Idoso , Eletrocardiografia Ambulatorial/efeitos dos fármacos , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/tratamento farmacológico , Frequência Cardíaca/efeitos dos fármacos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Piridazinas/uso terapêutico , Volume Sistólico/efeitos dos fármacos , Volume Sistólico/fisiologia
15.
J Cardiovasc Pharmacol ; 24(2): 194-8, 1994 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-7526050

RESUMO

The safety of concomitant use of angiotensin-converting enzyme (ACE) inhibitors and potassium-sparing diuretics (PSD) in severe heart failure remains a controversial issue. The database of the recently reported double-blind international trial, "Xamoterol in Severe Heart Failure," was investigated to elucidate this question. Of 516 patients with New York Heart Association (NYHA) class III-IV, despite diuretics and ACE inhibitor therapy, 352 were randomized to xamoterol, a beta 1 partial agonist, and 164 were randomized to placebo. During the 13-week study, 28% of all patients (xamoterol, 104; placebo, 42) received potassium-sparing diuretics. All groups were comparable in hemodynamics and dose of other diuretics. At study end, patients with or without PSD showed no significant differences in serum K+ or creatinine, independent of xamoterol or placebo therapy. Mortality rate was consistently lower: 4.6% in patients with PSD and 8.5% in patients without PSD, although statistical significance was not reached. As compared with baseline, K+ values of 6 patients with and 17 patients without PSD had increased by > 5.0 mM at study end (p = NS); 1 patient with and 11 patients without PSD had a creatinine level > 180 microM (p = NS). For 3 patients receiving PSD, and 2 patients not receiving PSD because of renal impairment, study was discontinued because of hyperpotassemia. No significant differences were noted in long and short action or different dosages of ACE inhibitors. PSD may be administered concomitantly with ACE inhibitors, but serum K+ should be monitored as with other diuretics.


Assuntos
Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Diuréticos/efeitos adversos , Insuficiência Cardíaca/tratamento farmacológico , Potássio/sangue , Xamoterol/uso terapêutico , Adulto , Idoso , Inibidores da Enzima Conversora de Angiotensina/administração & dosagem , Diuréticos/administração & dosagem , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
16.
Eur Heart J ; 14(2): 273-8, 1993 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-8449205

RESUMO

Although angiotensin converting enzyme inhibitor therapy is an established approach in the treatment of chronic heart failure, the required dosage remains unclear. This open 6 month study investigated the influence of different captopril dosages on the clinical course and neurohumoral activity of patients with severe heart failure (left ventricular ejection fraction < or = 20%). Eighty-five patients in New York Heart Association class II-IV despite treatment with digitalis, diuretics, and captopril (mean dose +/- SEM 28 +/- 2 mg.day-1 at baseline) for > or = 3 months received either 'low dose' captopril (< 75 mg.day-1, mean 32 +/- 2 mg.day-1; n = 46) or 'high dose' captopril (> or = 75 mg.day-1, mean 99 +/- 4 mg.day-1; n = 39) during the follow-up period. Both groups were comparable in clinical, haemodynamic and neurohumoral parameters at baseline. Functional state improved significantly only in the high dose group (P < 0.0001). Of 31 low dose and 20 high dose patients considered as heart transplantation candidates at baseline, 21 low dose and only six high dose patients remained on the waiting list (P < 0.0001). In patients in the low dose group, eight deaths were observed (P < 0.001). Seven patients remained on low dose captopril due to adverse effects. The initially elevated plasma levels of aldosterone and atrial natriuretic peptide decreased significantly only in high dose patients (P < 0.01). Renin increased significantly in both groups. These observations underline the necessity of suppressing neurohumoral overactivation with adequate doses of captopril reflected by sequential humoral plasma determination.


Assuntos
Captopril/administração & dosagem , Insuficiência Cardíaca/tratamento farmacológico , Aldosterona/sangue , Fator Natriurético Atrial/sangue , Captopril/farmacologia , Captopril/uso terapêutico , Feminino , Seguimentos , Insuficiência Cardíaca/sangue , Hemodinâmica/efeitos dos fármacos , Humanos , Masculino , Pessoa de Meia-Idade , Renina/sangue , Estudos Retrospectivos , Resultado do Tratamento
17.
World J Surg ; 18(4): 619-24, 1994.
Artigo em Inglês | MEDLINE | ID: mdl-7725754

RESUMO

Comparing patients with primary hyperparathyroidism (PHP) to a normocalcemic control population, those with PHP have a higher incidence of cardiovascular disease and cardiac abnormalities. This study aimed at correlating cardiac findings (valvular and myocardial calcification, myocardial hypertrophy) with clinical data (age, sex, clinical manifestation, nephrolithiasis, nephrocalcinosis, hypertension, skeletal abnormalities, hypercalcemic syndrome) and biochemical data (serum calcium, serum phosphate, serum iPTH level, serum creatinine). A group of 132 consecutive patients with surgically verified PHP (94 women, 38 men; ages 15-86, mean age 57 +/- 16 years) were included in this study. Blood chemistry, clinical presentation, radiography, and echocardiography were carried out in all patients for univariate and multivariate analyses of all parameters. There was no statistical correlation between clinical symptoms, biochemical data, and cardiac calcific alterations. Typical skeletal manifestations (osteolysis/subperiostal resorption) and valvular calcifications were significantly correlated to left ventricular hypertrophy (p = 0.005). Cardiac abnormalities such as calcific myocardial deposits or mitral and aortic valvular calcifications do not correlate with laboratory findings and clinical presentation at the time of diagnosis. There was no biochemical or clinical variable that could predict the frequency or severity of valvular sclerosis or calcific deposits in the myocardium. However, PHP-related skeletal abnormalities and valvular calcification were predicting factors for left ventricular hypertrophy, a reversible cardiac manifestation of PHP. Myocardial hypertrophy is more often found with classic symptomatic PHP with osseous abnormalities.


Assuntos
Cardiomiopatias/etiologia , Doenças das Valvas Cardíacas/etiologia , Hiperparatireoidismo/complicações , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Calcinose/etiologia , Feminino , Humanos , Hiperparatireoidismo/sangue , Masculino , Pessoa de Meia-Idade , Fatores Sexuais
18.
Eur Heart J ; 23(11): 886-91, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12042010

RESUMO

AIMS: To compare the precursor of atrial and brain natriuretic peptide (N-ANP, N-BNP), brain natriuretic peptide (BNP), big endothelin-1, the 6-min walk test and the Minnesota Living with Heart Failure Questionnaire (LHFQ) with regard to short-term outcome in an ambulatory heart failure population. METHODS AND RESULTS: Ninety-six individuals (left ventricular ejection fraction of 26+/-10%) were included in the study. Within 1 day blood samples of N-ANP, N-BNP, BNP and big endothelin-1 were obtained, and the 6-min walk test and LHFQ were measured. The predictive power of these variables - including renin-angiotensin system antagonist therapy - in respect of 1-year event-free survival were calculated with a Cox regression analysis. All investigated variables had the power to predict outcome in a univariate analysis. Multivariate analysis revealed that N-ANP (chi-square=58 P<0.0001), BNP (chi-square=8 P<0.01), the LHFQ (chi-square=6 P<0.02) and the renin-angiotensin system antagonist (chi-square=4 P<0.05), are independent predictors. CONCLUSION: We conclude that, in an open clinical cohort of patients with large differences in the progression of the disease, N-ANP, BNP and LHFQ are the most reliable predictors of worsening heart failure in the short term. However, the dosage of the ACE inhibitor influenced short-term survival in this population.


Assuntos
Insuficiência Cardíaca/epidemiologia , Atividades Cotidianas , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Fator Natriurético Atrial/metabolismo , Estudos de Coortes , Endotelina-1 , Endotelinas/metabolismo , Feminino , Insuficiência Cardíaca/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Peptídeo Natriurético Encefálico/metabolismo , Valor Preditivo dos Testes , Prognóstico , Modelos de Riscos Proporcionais , Precursores de Proteínas/metabolismo , Inquéritos e Questionários , Caminhada
19.
Z Kardiol ; 81(10): 546-52, 1992 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-1441695

RESUMO

Pimobendan is a positive inotropic agent with additional calcium-sensitizing effects of the phosphodiesterase III-inhibitor group. In short-term studies, beneficial hemodynamic effects have been demonstrated in patients with congestive heart failure. The aim of this prospective study was to examine the long-term effect of pimobendan (during at least 6 months) on subjective state, hemodynamic parameters, and arrhythmias in patients with congestive heart failure NYHA classes II and III. After double-blind randomization, 24 patients received pimobendan 5 mg bid or placebo orally in addition to a basic therapy (diuretics, digitalis). After 3 months, pimobendan-treated patients showed a significant clinical improvement (p < 0.03). In the placebo group, one patient underwent acute cardiac transplantation due to rapid clinical deterioration; another patient died suddenly after 5 months. No cardiac events occurred in the pimobendan group. In comparison to placebo, no proarrhythmogenic effect of pimobendan was detected. Clinical stabilization of patients in the pimobendan group was not paralleled by improvement of the hemodynamic parameters of left-ventricular performance.


Assuntos
Cardiotônicos/uso terapêutico , Insuficiência Cardíaca/tratamento farmacológico , Hemodinâmica/efeitos dos fármacos , Piridazinas/uso terapêutico , Volume Cardíaco/efeitos dos fármacos , Cardiotônicos/efeitos adversos , Doença Crônica , Método Duplo-Cego , Ecocardiografia/efeitos dos fármacos , Eletrocardiografia Ambulatorial/efeitos dos fármacos , Teste de Esforço/efeitos dos fármacos , Feminino , Insuficiência Cardíaca/fisiopatologia , Hemodinâmica/fisiologia , Humanos , Assistência de Longa Duração , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Piridazinas/efeitos adversos
20.
Z Kardiol ; 92(8): 677-81, 2003 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-14579845

RESUMO

Churg-Strauss syndrome is a rare disorder characterized by hypereosinophilia and a systemic vasculitis occurring inpatients with asthma and allergic rhinitis. Vasculitis commonly affects the lungs, the heart, the skin, and the peripheral nervous system. Cardiac involvement is characterized by acute and constrictive pericarditis, myocarditis and endocarditis, as well as ischemic cardiomyopathy. Endomyocardial fibrosis similar to Loeffler's syndrome has been rarely described. In the presented case, a 43 year old man with a history of allergy and asthma suffered from increasing dyspnea, fever, pulmonary infiltates and cardiomyopathy. Laboratory studies were notable for marked hypereosinophilia. In a bronchoscopic lavage and transbronchial biopsy eosinophilic infiltrates accompanied by vasculitis were found, Churg-Strauss syndrome was diagnosed. Echocardiogram showed endomyocardial deposits in the apex of the right ventricle, right ventricular function was normal particular in the basal segments. The left ventricle was slightly enlarged and left ventricular function was impaired. The diastolic mitral in-flow showed a restrictive pattern. Additionally, a pericardial effusion was observed without signs of tamponade. The patient received corticosteroids, cyclophosphamide and cardiomyopathy-specific therapy and showed a marked improvement after 4 months.


Assuntos
Síndrome de Churg-Strauss/complicações , Disfunção Ventricular Esquerda/etiologia , Adulto , Inibidores da Enzima Conversora de Angiotensina/administração & dosagem , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Anti-Inflamatórios/administração & dosagem , Anti-Inflamatórios/uso terapêutico , Síndrome de Churg-Strauss/diagnóstico , Síndrome de Churg-Strauss/tratamento farmacológico , Cortisona/administração & dosagem , Cortisona/uso terapêutico , Ciclofosfamida/uso terapêutico , Quimioterapia Combinada , Ecocardiografia , Eletrocardiografia , Fibrose Endomiocárdica/diagnóstico , Fibrose Endomiocárdica/tratamento farmacológico , Seguimentos , Humanos , Imunossupressores/administração & dosagem , Imunossupressores/uso terapêutico , Masculino , Inibidores da Agregação Plaquetária/administração & dosagem , Inibidores da Agregação Plaquetária/uso terapêutico , Fatores de Tempo , Disfunção Ventricular Esquerda/diagnóstico , Disfunção Ventricular Esquerda/tratamento farmacológico
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