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1.
J Food Sci Technol ; 57(3): 1003-1012, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32123421

RESUMO

To meet the needs of new consumers, meat researchers need to develop healthier products. Dietary fibers can be added for structural purposes, to present functional characteristics or to change the composition of the final product. In this study, mixture design was used to investigate the effects of partial substitution of pork fat by inulin, fructooligosaccharides and α-cyclodextrin on the technological and sensory quality characteristics of low-fat Italian type salami. The partial substitution of fat using dietary fibers shows no effect on weight loss, Aw and pH during ripening time. However, the addition of up to 2% α-cyclodextrin increased lightness and reduced redness and yellowness. Up to 2% of inulin or fructooligosaccharides added improved the sensory acceptance, texture parameters and redness. Healthier low-fat Italian type salami can be produced using inulin or fructooligosaccharides as fat substitute for pork fat and still obtain good technological and sensorial results.

2.
Br Poult Sci ; 60(6): 716-723, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31532242

RESUMO

1. The current consumer preference for healthier meat products is associated with less additives in manufacturing (so-called 'clean-label') or the addition of non-meat ingredients with functional properties, recognised as improving specific technological properties in meat products.2. This study evaluated the effect of the addition of alpha-cyclodextrin and wheat fibre to low-fat chicken frankfurters containing 35% mechanically deboned chicken meat on the technological and sensorial properties during refrigerated storage.3. The results showed that the addition of dietary fibres (alpha-cyclodextrin and wheat fibre) in low-fat chicken frankfurters improved emulsion stability, hardness, chewiness and reduced cohesiveness.4. Alpha-cyclodextrin helped the retention of fat globules in the microstructure and affected colour in the sensorial evaluation.5. The use of alpha-cyclodextrin, in combination with wheat fibre, as a new ingredient to substitute fat in emulsified meat products containing mechanically deboned chicken, improved emulsion stability and texture.6. Alpha-cyclodextrin and wheat fibre were effective in contributing to fat reduction without affecting the sensory properties of the product.


Assuntos
Fibras na Dieta/metabolismo , Produtos Avícolas/análise , alfa-Ciclodextrinas/administração & dosagem , Adolescente , Adulto , Animais , Brasil , Galinhas , Cor , Dieta com Restrição de Gorduras/métodos , Gorduras na Dieta/administração & dosagem , Gorduras na Dieta/análise , Fibras na Dieta/administração & dosagem , Fibras na Dieta/análise , Fibras na Dieta/classificação , Emulsões , Feminino , Humanos , Concentração de Íons de Hidrogênio , Masculino , Microscopia Eletrônica de Varredura , Pessoa de Meia-Idade , Valor Nutritivo , Produtos Avícolas/microbiologia , Produtos Avícolas/normas , Distribuição Aleatória , Análise de Regressão , Suínos , Paladar , Triticum , Adulto Jovem
4.
Braz J Med Biol Res ; 39(1): 53-62, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16400464

RESUMO

Since neurovascular control is altered in obese subjects, we hypothesized that weight loss by diet (D) or diet plus exercise training (D + ET) would improve neurovascular control during mental stress in obese women. In a study with a dietary reduction of 600 kcal/day with or without exercise training for 4 months, 53 obese women were subdivided in D (N = 22, 33 +/- 1 years, BMI 34 +/- 1 kg/m2), D + ET (N = 22, 33 +/- 1 years, BMI 33 +/- 1 kg/m2), and nonadherent (NA, N = 9, 35 +/- 2 years, BMI 33 +/- 1 kg/m2) groups. Muscle sympathetic nerve activity (MSNA) was measured by microneurography and forearm blood flow by venous occlusion plethysmography. Mental stress was elicited by a 3-min Stroop color word test. Weight loss was similar between D and D + ET groups (87 +/- 2 vs 79 +/- 2 and 85 +/- 2 vs 76 +/- 2 kg, respectively, P < 0.05) with a significant reduction in MSNA during mental stress (58 +/- 2 vs 50 +/- 2, P = 0.0001, and 59 +/- 3 vs 50 +/- 2 bursts/100 beats, P = 0.0001, respectively), although the magnitude of the response was unchanged. Forearm vascular conductance during mental stress was significantly increased only in D + ET (2.74 +/- 0.22 vs 3.52 +/- 0.19 units, P = 0.02). Weight loss reduces MSNA during mental stress in obese women. The increase in forearm vascular conductance after weight loss provides convincing evidence for D + ET interventions as a nonpharmacologic therapy of human obesity.


Assuntos
Dieta Redutora , Exercício Físico , Obesidade/terapia , Estresse Psicológico/fisiopatologia , Sistema Nervoso Simpático/fisiopatologia , Adulto , Índice de Massa Corporal , Feminino , Antebraço/irrigação sanguínea , Humanos , Músculo Esquelético/irrigação sanguínea , Músculo Esquelético/inervação , Obesidade/fisiopatologia , Obesidade/psicologia , Pletismografia , Fatores de Tempo
5.
Braz. j. med. biol. res ; 39(1): 53-62, Jan. 2006. tab, graf
Artigo em Inglês | LILACS | ID: lil-419151

RESUMO

Since neurovascular control is altered in obese subjects, we hypothesized that weight loss by diet (D) or diet plus exercise training (D + ET) would improve neurovascular control during mental stress in obese women. In a study with a dietary reduction of 600 kcal/day with or without exercise training for 4 months, 53 obese women were subdivided in D (N = 22, 33 ± 1 years, BMI 34 ± 1 kg/m²), D + ET (N = 22, 33 ± 1 years, BMI 33 ± 1 kg/m²), and nonadherent (NA, N = 9, 35 ± 2 years, BMI 33 ± 1 kg/m²) groups. Muscle sympathetic nerve activity (MSNA) was measured by microneurography and forearm blood flow by venous occlusion plethysmography. Mental stress was elicited by a 3-min Stroop color word test. Weight loss was similar between D and D + ET groups (87 ± 2 vs 79 ± 2 and 85 ± 2 vs 76 ± 2 kg, respectively, P < 0.05) with a significant reduction in MSNA during mental stress (58 ± 2 vs 50 ± 2, P = 0.0001, and 59 ± 3 vs 50 ± 2 bursts/100 beats, P = 0.0001, respectively), although the magnitude of the response was unchanged. Forearm vascular conductance during mental stress was significantly increased only in D + ET (2.74 ± 0.22 vs 3.52 ± 0.19 units, P = 0.02). Weight loss reduces MSNA during mental stress in obese women. The increase in forearm vascular conductance after weight loss provides convincing evidence for D + ET interventions as a nonpharmacologic therapy of human obesity.


Assuntos
Humanos , Feminino , Adulto , Dieta Redutora , Terapia por Exercício , Obesidade/terapia , Estresse Psicológico/fisiopatologia , Sistema Nervoso Simpático/fisiopatologia , Índice de Massa Corporal , Antebraço/irrigação sanguínea , Músculo Esquelético/irrigação sanguínea , Músculo Esquelético/inervação , Obesidade/fisiopatologia , Obesidade/psicologia , Pletismografia , Fatores de Tempo
6.
Braz. j. med. biol. res ; 36(11): 1595-1603, Nov. 2003. ilus, graf
Artigo em Inglês | LILACS | ID: lil-348279

RESUMO

We investigate whether combined treatment with losartan, an angiotensin II receptor blocker, and exercise training (ET) in spontaneously hypertensive rats (SHR) would have an additive effect in reducing hypertension and improving baroreflex sensitivity when compared with losartan alone. Male SHR (8 weeks old) were assigned to 3 groups: sedentary placebo (SP, N = 16), sedentary under losartan treatment (SL, N = 11; 10 mg kg-1 day-1, by gavage), and ET under losartan treatment (TL, N = 10). ET was performed on a treadmill 5 days/week for 60 min at 50 percent of peak VO2, for 18 weeks. Blood pressure (BP) was measured with a catheter inserted into the carotid artery, and cardiac output with a microprobe placed around the ascending aorta. The baroreflex control of heart rate was assessed by administering increasing doses of phenylephrine and sodium nitroprusside (iv). Losartan significantly reduced mean BP (178 ± 16 vs 132 ± 12 mmHg) and left ventricular hypertrophy (2.9 ± 0.4 vs 2.5 ± 0.2 mg/g), and significantly increased baroreflex bradycardia and tachycardia sensitivity (1.0 ± 0.3 vs 1.7 ± 0.5 and 2.0 ± 0.7 vs 3.2 ± 1.7 bpm/mmHg, respectively) in SL compared with SP. However, losartan combined with ET had no additional effect on BP, baroreflex sensitivity or left ventricular hypertrophy when compared with losartan alone. In conclusion, losartan attenuates hypertension and improves baroreflex sensitivity in SHR. However, ET has no synergistic effect on BP in established hypertension when combined with losartan, at least at the dosage used in this investigation.


Assuntos
Animais , Masculino , Ratos , Anti-Hipertensivos , Barorreflexo , Teste de Esforço , Hipertensão , Losartan , Condicionamento Físico Animal , Pressão Sanguínea , Frequência Cardíaca , Hipertensão , Ratos Endogâmicos SHR
7.
Braz J Med Biol Res ; 36(11): 1595-603, 2003 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-14576915

RESUMO

We investigate whether combined treatment with losartan, an angiotensin II receptor blocker, and exercise training (ET) in spontaneously hypertensive rats (SHR) would have an additive effect in reducing hypertension and improving baroreflex sensitivity when compared with losartan alone. Male SHR (8 weeks old) were assigned to 3 groups: sedentary placebo (SP, N = 16), sedentary under losartan treatment (SL, N = 11; 10 mg kg-1 day-1, by gavage), and ET under losartan treatment (TL, N = 10). ET was performed on a treadmill 5 days/week for 60 min at 50% of peak VO2, for 18 weeks. Blood pressure (BP) was measured with a catheter inserted into the carotid artery, and cardiac output with a microprobe placed around the ascending aorta. The baroreflex control of heart rate was assessed by administering increasing doses of phenylephrine and sodium nitroprusside (iv). Losartan significantly reduced mean BP (178 16 vs 132 12 mmHg) and left ventricular hypertrophy (2.9 0.4 vs 2.5 0.2 mg/g), and significantly increased baroreflex bradycardia and tachycardia sensitivity (1.0 0.3 vs 1.7 0.5 and 2.0 0.7 vs 3.2 1.7 bpm/mmHg, respectively) in SL compared with SP. However, losartan combined with ET had no additional effect on BP, baroreflex sensitivity or left ventricular hypertrophy when compared with losartan alone. In conclusion, losartan attenuates hypertension and improves baroreflex sensitivity in SHR. However, ET has no synergistic effect on BP in established hypertension when combined with losartan, at least at the dosage used in this investigation.


Assuntos
Anti-Hipertensivos/uso terapêutico , Barorreflexo/efeitos dos fármacos , Hipertensão/terapia , Losartan/uso terapêutico , Condicionamento Físico Animal/fisiologia , Animais , Pressão Sanguínea/efeitos dos fármacos , Frequência Cardíaca/efeitos dos fármacos , Hipertensão/fisiopatologia , Masculino , Ratos , Ratos Endogâmicos SHR
8.
Arch Intern Med ; 161(19): 2337-42, 2001 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-11606149

RESUMO

BACKGROUND: Few studies have prospectively and systematically explored the factors that acutely precipitate exacerbation of congestive heart failure (CHF) in patients with left ventricular dysfunction. Knowledge of such factors is important in designing measures to prevent deterioration of clinical status. The objective of this study was to prospectively describe the precipitants associated with exacerbation of CHF status in patients enrolled in the Randomized Evaluation of Strategies for Left Ventricular Dysfunction Pilot Study. METHODS: We conducted a 2-stage, multicenter, randomized trial in 768 patients with CHF who had an ejection fraction of less than 40%. Patients were randomly assigned to receive enalapril maleate, candesartan cilexetil, or both for 17 weeks, followed by randomization to receive metoprolol succinate or placebo for 26 weeks. Investigators systematically documented information on clinical presentation, management, and factors associated with the exacerbation for any episode of acute CHF during follow-up. RESULTS: A total of 323 episodes of worsening of CHF occurred in 180 patients during 43 weeks of follow-up; 143 patients required hospitalization, and 5 died. Factors implicated in worsening of CHF status included noncompliance with salt restriction (22%); other noncardiac causes (20%), notably pulmonary infectious processes; study medications (15%); use of antiarrhythmic agents in the past 48 hours (15%); arrhythmias (13%); calcium channel blockers (13%); and inappropriate reductions in CHF therapy (10%). CONCLUSIONS: A variety of factors, many of which are avoidable, are associated with exacerbation of CHF. Attention to these factors and patient education are important in the prevention of CHF deterioration.


Assuntos
Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/mortalidade , Metoprolol/análogos & derivados , Tetrazóis , Disfunção Ventricular Esquerda/tratamento farmacológico , Disfunção Ventricular Esquerda/mortalidade , Antagonistas Adrenérgicos beta/uso terapêutico , Idoso , Anti-Hipertensivos/uso terapêutico , Benzimidazóis/uso terapêutico , Compostos de Bifenilo/uso terapêutico , Progressão da Doença , Método Duplo-Cego , Quimioterapia Combinada , Enalapril/uso terapêutico , Feminino , Hospitalização , Humanos , Masculino , Metoprolol/uso terapêutico , Pessoa de Meia-Idade , Cooperação do Paciente , Fatores Desencadeantes , Estudos Prospectivos , Índice de Gravidade de Doença , Volume Sistólico/efeitos dos fármacos , Resultado do Tratamento
9.
Arq Bras Cardiol ; 77(1): 30-6, 2001 Jul.
Artigo em Inglês, Português | MEDLINE | ID: mdl-11500745

RESUMO

OBJECTIVE: To verify whether the guidelines for the treatment of heart failure have been adopted at a university hospital. The guidelines recommend the following: use of angiotensin-converting enzyme inhibitors for all patients with systolic ventricular dysfunction, use of digitalis and diuretics for symptomatic patients, use of beta-blockers for patients in functional classes II or III, use of spironolactone for patients in functional classes III or IV. METHODS: We analyzed the prescriptions of 199 patients. All these patients had ejection fraction (EF)

Assuntos
Baixo Débito Cardíaco/tratamento farmacológico , Cardiologia/normas , Fidelidade a Diretrizes , Guias de Prática Clínica como Assunto , Adulto , Idoso , Idoso de 80 Anos ou mais , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Cardiomiopatias/tratamento farmacológico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica/tratamento farmacológico , Volume Sistólico , Disfunção Ventricular/tratamento farmacológico
10.
Arq Bras Cardiol ; 77(1): 59-62, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11500748

RESUMO

OBJECTIVE: To identify and associate potential electrocardiographic and echocardiographic changes in patients with the indeterminate form of Chagas' disease during long-term follow-up. METHODS: One hundred sixty patients underwent standard electrocardiography and two-dimensional guided M-mode echocardiography for left ventricular ejection fraction determination. Patients were followed up for 98.6+/-30.4 months, undergoing repeat electrocardiographic studies at 6-month intervals and echocardiographic studies at 12-month intervals. RESULTS: Based on the electrocardiographic findings, the patients were divided into group I, 125 patients (78.6%) with normal electrocardiograms throughout follow-up, and group II, 34 patients (21.3%) who developed electrocardiographic changes. Group II was further divided into group IIA (9 patients, 5.6%) with permanent electrocardiographic changes, group IIB (14 patients, 8.8%) with transitory electrocardiographic changes, and group IIC (11 patients, 6.9%) with changes appearing only on the final electrocardiogram. Left ventricular ejection fractions remained normal in the entire population studied and did not differ among groups. CONCLUSION: The indeterminate form of Chagas' disease clearly represents a benign condition with a favorable long-term prognosis. Although some patients develop electrocardiographic changes, left ventricular systolic function is well preserved.


Assuntos
Doença de Chagas/fisiopatologia , Ecocardiografia/métodos , Eletrocardiografia/métodos , Adolescente , Adulto , Doença de Chagas/diagnóstico , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Volume Sistólico
11.
Am J Physiol Heart Circ Physiol ; 281(2): H469-75, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11454547

RESUMO

There is no information about the muscle metaboreflex control in obese individuals. In 40 normotensive obese women (OW; body mass index 33.5 +/- 0.4 kg/m2, age 32.4 +/- 1.1 yr) and 15 age-matched, normotensive lean women (LW; body mass index 22.7 +/- 0.8 kg/m2, age 34.4 +/- 1.4 yr), we measured muscle sympathetic nerve activity (MSNA) and forearm blood flow (FBF) in the nonexercising forearm during static exercise at 10 and 30% of maximal voluntary contraction (MVC). Baseline MSNA (38 +/- 2 vs. 31 +/- 1 bursts/min, P = 0.001) and mean blood pressure were significantly higher in OW compared with LW. FBF was significantly lower, whereas forearm vascular resistance was significantly higher in OW. During 10% MVC, MSNA increased similarly in both groups, but during 30% MVC, MSNA was higher in LW. FBF and forearm vascular resistance responses during both 10 and 30% MVC were similar between groups. During posthandgrip circulatory arrest, MSNA remained significantly elevated compared with baseline in both groups, but this increase was significantly lower in OW (3.8 +/- 0.82 vs. 9.4 +/- 1.03 bursts/min, P = 0.002). In conclusion, muscle metaboreflex control of MSNA is blunted in OW. MSNA responses are not augmented during selective activation of central command/mechanoreceptors and metaboreceptors, despite increased MSNA levels in OW. Muscle vasodilatory response during graded handgrip isometric exercise is preserved in OW.


Assuntos
Músculo Esquelético/inervação , Músculo Esquelético/fisiopatologia , Obesidade/fisiopatologia , Sistema Nervoso Simpático/fisiopatologia , Adulto , Exercício Físico , Feminino , Humanos , Contração Muscular , Reflexo
12.
Braz J Med Biol Res ; 34(4): 475-8, 2001 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11285458

RESUMO

To study the relationship between the sympathetic nerve activity and hemodynamic alterations in obesity, we simultaneously measured muscle sympathetic nerve activity (MSNA), blood pressure, and forearm blood flow (FBF) in obese and lean individuals. Fifteen normotensive obese women (BMI = 32.5 +/- 0.5 kg/m2) and 11 age-matched normotensive lean women (BMI = 22.7 +/- 1.0 kg/m2) were studied. MSNA was evaluated directly from the peroneal nerve by microneurography, FBF was measured by venous occlusion plethysmography, and blood pressure was measured noninvasively by an autonomic blood pressure cuff. MSNA was significantly increased in obese women when compared with lean control women. Forearm vascular resistance and blood pressure were significantly higher in obese women than in lean women. FBF was significantly lower in obese women. BMI was directly and significantly correlated with MSNA, blood pressure, and forearm vascular resistance levels, but inversely and significantly correlated with FBF levels. Obesity increases sympathetic nerve activity and muscle vascular resistance, and reduces muscle blood flow. These alterations, taken together, may explain the higher blood pressure levels in obese women when compared with lean age-matched women.


Assuntos
Pressão Sanguínea/fisiologia , Antebraço/irrigação sanguínea , Músculo Esquelético/inervação , Obesidade/fisiopatologia , Sistema Nervoso Simpático/fisiologia , Adulto , Feminino , Frequência Cardíaca/fisiologia , Humanos , Pessoa de Meia-Idade , Músculo Esquelético/irrigação sanguínea , Fluxo Sanguíneo Regional/fisiologia , Resistência Vascular/fisiologia
13.
Braz. j. med. biol. res ; 34(4): 475-8, Apr. 2001. tab, graf
Artigo em Inglês | LILACS | ID: lil-282612

RESUMO

To study the relationship between the sympathetic nerve activity and hemodynamic alterations in obesity, we simultaneously measured muscle sympathetic nerve activity (MSNA), blood pressure, and forearm blood flow (FBF) in obese and lean individuals. Fifteen normotensive obese women (BMI = 32.5 + or - 0.5 kg/m²) and 11 age-matched normotensive lean women (BMI = 22.7 + or - 1.0 kg/m²) were studied. MSNA was evaluated directly from the peroneal nerve by microneurography, FBF was measured by venous occlusion plethysmography, and blood pressure was measured noninvasively by an autonomic blood pressure cuff. MSNA was significantly increased in obese women when compared with lean control women. Forearm vascular resistance and blood pressure were significantly higher in obese women than in lean women. FBF was significantly lower in obese women. BMI was directly and significantly correlated with MSNA, blood pressure, and forearm vascular resistance levels, but inversely and significantly correlated with FBF levels. Obesity increases sympathetic nerve activity and muscle vascular resistance, and reduces muscle blood flow. These alterations, taken together, may explain the higher blood pressure levels in obese women when compared with lean age-matched women


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Pressão Sanguínea/fisiologia , Antebraço/irrigação sanguínea , Músculo Esquelético/inervação , Obesidade/fisiopatologia , Sistema Nervoso Simpático/fisiologia , Frequência Cardíaca/fisiologia , Músculo Esquelético/irrigação sanguínea , Fluxo Sanguíneo Regional/fisiologia , Resistência Vascular/fisiologia
14.
Am J Physiol Heart Circ Physiol ; 280(3): H1286-92, 2001 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11179075

RESUMO

The purpose of this study was to determine if abnormalities of sympathetic neural and vascular control are present in mild and/or severe heart failure (HF) and to determine the underlying afferent mechanisms. Patients with severe HF, mild HF, and age-matched controls were studied. Muscle sympathetic nerve activity (MSNA) and forearm vascular resistance (FVR) in the nonexercising arm were measured during mild and moderate static handgrip. MSNA during moderate handgrip was higher at baseline and throughout exercise in severe HF vs. mild HF (peak MSNA 67 +/- 3 vs. 54 +/- 3 bursts/min, P < 0.0001) and higher in mild HF vs. controls (33 +/- 3 bursts/min, P < 0.0001), but the change in MSNA was not different between the groups. The change in FVR was not significantly different between the three groups during static exercise. During isolation of muscle metaboreceptors, MSNA and blood pressure remained elevated in normal controls and mild HF but not in severe HF. During mild handgrip, the increase in MSNA was exaggerated in severe HF vs. controls and mild HF, in whom MSNA did not increase. In summary, the increase in MSNA during static exercise in severe HF appears to be attributable to exaggerated central command or muscle mechanoreceptor control, not muscle metaboreceptor control.


Assuntos
Insuficiência Cardíaca/fisiopatologia , Esforço Físico/fisiologia , Sistema Nervoso Simpático/fisiopatologia , Adulto , Artérias/inervação , Artérias/fisiologia , Feminino , Antebraço/irrigação sanguínea , Força da Mão , Humanos , Masculino , Fluxo Sanguíneo Regional/fisiologia , Resistência Vascular/fisiologia
15.
Arq Bras Cardiol ; 77(6): 541-8, 2001 Dec.
Artigo em Inglês, Português | MEDLINE | ID: mdl-11799429

RESUMO

OBJECTIVE - To describe clinical observations of marked improvement in ventricular dysfunction in a medical office environment under circumstances differing from those in study protocols and multicenter studies performed in hospital or with outpatient cohorts. METHODS - Eleven cardiac failure patients with marked ventricular dysfunction receiving treatment at a doctors office between 1994 and 1999 were studied. Their ages ranged from 20 and 66 years (mean 39.42+/-14.05 years); 7 patients were men, 4 were women. Cardiopathic etiologies were arterial hypertension in 5 patients, peripartum cardiomyopathy in 2, nondefined myocarditis in 2, and alcoholic cardiomyopathy in 4. Initial echocardiograms revealed left ventricular dilatation (average diastolic diameter, 69.45+/-8.15mm), reduced left ventricular ejection fraction (0.38+/-0.08) and left atrial dilatation (43.36+/-5.16mm). The therapeutic approach followed consisted of patient orientation, elimination of etiological or causal factors of cardiac failure, and prescription of digitalis, diuretics, and angiotensinconverting enzyme inhibitors. RESULTS - Following treatment, left ventricular ejection fraction changed to 0.63+/-0.09; left ventricular diameters changed to 57.18+/-8.13mm, and left atrium diameters changed to 37.27+/-8.05mm. Maximum improvement was noted after 16.9+/-8.63 (6 to 36) months. CONCLUSION - Patients with serious cardiac failure and ventricular dysfunction caused by hypertension, alcoholism, or myocarditis can experience marked improvement in ventricular dysfunction after undergoing appropriate therapy within the venue of the doctor's office.


Assuntos
Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Antiarrítmicos/uso terapêutico , Digoxina/uso terapêutico , Disfunção Ventricular Esquerda/tratamento farmacológico , Adulto , Idoso , Captopril/uso terapêutico , Diuréticos/uso terapêutico , Enalapril/uso terapêutico , Feminino , Seguimentos , Insuficiência Cardíaca/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
16.
Arq Bras Cardiol ; 74(4): 324-8, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10967584

RESUMO

OBJECTIVE: We analyzed the frequency of peripheral embolisms, the underlying heart disease,triggering factors, the sites of the emboli, and evolution of the patients. METHODS: We analyzed 29 cases of peripheral arterial embolism out of a total of 20,211 hospitalizations in a cardiology center in the city of São Paulo. The age was 51.89+/-18.66 years, and 15 were males. RESULTS: Embolism in the right lower limb occurred in 18 patients (62.0%),in the left lower 11(37.9%) and right upper 3 (10.3%) limbs, and in the left arm (1). Four patients had embolism in two limbs. The heart disease, mitral valvar heart disease (9 patients - 31.0%); infective endocarditis (7- 24.1%); dilated cardiomyopathy (6 - 20.6%); ischemic coronary heart disease (6 patients - 20.6%); and one patient with cor pulmonale. Atrial fibrillation was observed in 20 patients (68.9%), chronic in 12 patients (41.3% ) and acute in 8 (27. 5%). All patients with mitral valvar heart disease had atrial fibrillation, chronic in 8 patients (88.8%); patients with cardiomyopathy and coronary heart disease, 4 in each group had atrial fibrillation, acute in 60% of the patients. Patients with infective endocarditis, 3 had staphylococcus and 2 Gram-negative bacteria. In the follow-up, 2 patients (6.8%) required limbs amputation, and 5 (17.2%) died due to embolism. CONCLUSION: Most of the time, embolism does not cause permanent complications. Our data highlight the importance of anticoagulation for patients acute atrial fibrillation in myocardial dysfunction and for patients with chronic atrial fibrillation in cases of mitral valvar heart disease to prevent peripheral embolism.


Assuntos
Embolia/etiologia , Cardiopatias/complicações , Doenças Vasculares Periféricas/etiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Criança , Ecocardiografia , Embolia/epidemiologia , Feminino , Hospitais Universitários , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Vasculares Periféricas/epidemiologia , Fatores de Risco , Fatores de Tempo
17.
Arq Bras Cardiol ; 73(6): 499-506, 1999 Dec.
Artigo em Inglês, Português | MEDLINE | ID: mdl-10904270

RESUMO

This is the report of a rare case of endomyocardial fibrosis associated with massive calcification of the left ventricle in a male patient with dyspnea on great exertion, which began 5 years earlier and rapidly evolved. Due to lack of information and the absence of clinical signs that could characterize impairment of other organs, the case was initially managed as a disease with a pulmonary origin. With the evolution of the disease and in the presence of radiological images of heterogeneous opacification in the projection of the left ventricle, the diagnostic hypothesis of endomyocardial disease was established. This hypothesis was later confirmed on chest computed tomography. The patient died on the 16th day of the hospital stay, probably because of lack of myocardial reserve, with clinical findings of refractory heart failure, possibly aggravated by pulmonary infection. This shows that a rare disease such as endomyocardial fibrosis associated with massive calcification of the left ventricle may be suspected on a simple chest X-ray and confirmed by computed tomography.


Assuntos
Calcinose/complicações , Fibrose Endomiocárdica/complicações , Adulto , Calcinose/diagnóstico por imagem , Fibrose Endomiocárdica/diagnóstico por imagem , Evolução Fatal , Ventrículos do Coração , Humanos , Masculino , Radiografia
18.
Arq Bras Cardiol ; 71(1): 15-20, 1998 Jul.
Artigo em Português | MEDLINE | ID: mdl-9755529

RESUMO

PURPOSE: To study the incidence, main causes, aggravating factors and secondary diagnoses of heart failure (HF) during 1995 at the Instituto do Coração of São Paulo. METHODS: Data from hospitalized patients according to the PRODESP data base were analyzed. The following data were studied; age, sex, principal and secondary diagnoses, surgical procedures and mortality. To analyze the data, tables according to sex, age and main cause were built. Analysis of variance and t test were employed to verify differences between groups. RESULTS: In 1995, 903 out of 9620 patients were hospitalized due to HF. The majority were male (60.4%) and the patients' age was between two days and 98 years old (mean 52.6). Ischemic (32.6), dilated (25.8%) and valvar heart disease (22%) were the main causes of HF. 32.1% were submitted to correction of the HF main cause, specially those with valvar heart disease (62.3%). There was greater incidence of multiple diagnoses in aged patients. The mortality was greater in patients younger than 20 and in those older than 80 years old. CONCLUSION: The incidence of HF at INCOR during 1995 was 9.38%. Ischemic myocardiopathy was the most frequent HF cause. The mortality was greater among children, probably because of heart disease complexity and, in the above-80 group due to the greater comorbidity.


Assuntos
Baixo Débito Cardíaco/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Brasil , Baixo Débito Cardíaco/etiologia , Baixo Débito Cardíaco/mortalidade , Criança , Pré-Escolar , Feminino , Hospitais , Humanos , Incidência , Lactente , Masculino , Pessoa de Meia-Idade
19.
Arq Bras Cardiol ; 70(4): 265-9, 1998 Apr.
Artigo em Português | MEDLINE | ID: mdl-9687626

RESUMO

PURPOSE: To evaluate the effect of coronary artery bypass graft surgery (CABG) on ischemic asymptomatic episodes (IAE). METHODS: Twenty eight males (means age 57.3 +/- 9.6 years) with stable angina and no microcirculation abnormalities, who presented with IAE after medication withdrawal, were studied using ambulatory electrocardiography monitoring. Presence of IEA was analyzed before and 4 months after CABG according to its frequency and heart rate (HR) response. CAGB was considered complete in 75% of the cases. RESULTS: The number or IAE was reduced from 162 (9 symptomatic) in the preoperative period to 4 after surgery (p < 0.05). In two patients with IAE in the postoperative period, coronariography confirmed obstruction of aortocoronary grafts. Analysis of HR at the beginning and peak of IAE suggested as mechanisms both reduced blood flow and increased oxygen consumption by the myocardium. CONCLUSION: CABC eliminated IAE regardless of HR. When IAE is present after surgery, graft occlusion should be suspected.


Assuntos
Isquemia Miocárdica/cirurgia , Revascularização Miocárdica , Adulto , Idoso , Eletrocardiografia Ambulatorial , Teste de Esforço , Humanos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica/diagnóstico
20.
Arq Bras Cardiol ; 70(5): 315-20, 1998 May.
Artigo em Português | MEDLINE | ID: mdl-9687635

RESUMO

PURPOSE: The 6-9 minute walking test was used in this study to evaluate the impact of these drugs on functional capacity of patients admitted to the Hospital because of Heart Failure (CHF). METHODS: Ten patients (5 males and 5 females) with mean age of 47 years and NYHACHF functional class III or IV underwent a 6-9 minute walking test at admission and on the day of discharge from the Hospital. The following parameters were evaluated both at admission and discharge: body weight, echocardiography-derived LV dimensions and function, plasmatic levels of sodium, potassium, Bun, creatinine, hemoglobin and hematocrit. Treatment consisted of increasing outpatient dose of furosemide (IV and/or PO) plus the association of thiazide if necessary. The previous dose regimen of digitalis, ACE inhibitors or the association nitrate and hydralazine was kept unchanged. RESULTS: Time to compensation of CHF varied from 4 to 30 days (mean 8.7 +/- 7.8 days). LV end diastolic dimension varied from 47 to 81mm. LV EF spanned from 0.26 to 0.74. The 6min walking distance improved from 193.4 +/- 71.5m to 341.8 +/- 67.7m (p < 0.00002) and the 9min walking distance from 268.1 +/- 119.6m to 518.0 +/- 114.8m (p < 0.00005). Hemoglobin, hematocrit, BUN, creatinine and sodium levels were unchanged from admission to discharge, whereas plasma potassium level increased from 4.0 +/- 0.9mEq/l to 4.69 +/- 1.00mEq/l (p = 0.01), and body weight was reduced from 58.9 +/- 6.42kg to 52.9 +/- 5.3lkg (p < 0.0006). CONCLUSION: Compensating CHF with diuretics leads to a significant improvement in physical capacity. This benefit already evident in the in-hospital phase.


Assuntos
Diuréticos/uso terapêutico , Insuficiência Cardíaca/tratamento farmacológico , Caminhada , Adulto , Idoso , Teste de Esforço , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
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