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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 10
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Imprime registro no formato completo
Assessment of ventilatory neuromuscular drive in patients with obstructive sleep apnea BJMBR
Bittencourt,L.R.A.; Moura,S.M.T.; Bagnato,M.C.; Gregório,L.C.; Tufik,S.; Nery,L.E..
The presence of abnormalities of the respiratory center in obstructive sleep apnea (OSA) patients and their correlation with polysomnographic data are still a matter of controversy. Moderately obese, sleep-deprived OSA patients presenting daytime hypersomnolence, with normocapnia and no clinical or spirometric evidence of pulmonary disease, were selected. We assessed the ventilatory control and correlated it with polysomnographic data. Ventilatory neuromuscular drive was evaluated in these patients by measuring the ventilatory response (VE), the inspiratory occlusion pressure (P.1) and the ventilatory pattern (VT/TI, TI/TTOT) at rest and during submaximal exercise, breathing room air. These analyses were also performed after inhalation of a hypercapnic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ventilatory neuromuscular drive; Sleep apnea; Polysomnography; Ventilatory control.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000400005
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Comparison of AutoSetä and polysomnography for the detection of apnea-hypopnea events BJMBR
Bagnato,M.C.; Nery,L.E.; Moura,S.M.T.; Bittencourt,L.R.A.; Tufik,S..
The use of the flow vs time relationship obtained with the nasal prongs of the AutoSetä (AS) system (diagnosis mode) has been proposed to detect apneas and hypopneas in patients with reasonable nasal patency. Our aim was to compare the accuracy of AS to that of a computerized polysomnographic (PSG) system. The study was conducted on 56 individuals (45 men) with clinical characteristics of obstructive sleep apnea (OSA). Their mean (± SD) age was 44.6 ± 12 years and their body mass index was 31.3 ± 7 kg/m2. Data were submitted to parametric analysis to determine the agreement between methods and the intraclass correlation coefficient was calculated. The Student t-test and Bland and Altman plots were also used. Twelve patients had an apnea-hypopnea index...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Obstructive sleep apnea; Polysomnography; Computerized diagnostic system.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000500005
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Differences between remaining ability and loss of capacity in maximum aerobic impairment BJMBR
Neder,J.A.; Nery,L.E.; Bagatin,E.; Lucas,S.R.; Anção,M.S.; Sue,D.Y..
In the evaluation of exercise intolerance of patients with respiratory diseases the American Medical Association (AMA) and the American Thoracic Society (ATS) have proposed similar classifications for rating aerobic impairment using maximum oxygen uptake (VO2max) normalized for total body weight (ml min-1 kg-1). However, subjects with the same VO2max weight-corrected values may have considerably different losses of aerobic performance (VO2max expressed as % predicted). We have proposed a new, specific method for rating loss of aerobic capacity (VO2max, % predicted) and we have compared the two classifications in a prospective study involving 75 silicotic claimants. Logistic regression analysis showed that the disagreement between rating systems (higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disability evaluation; Work capacity; Exercise tolerance; Oxygen consumption; Occupational diseases.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000500006
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Dynamics of chest wall volume regulation during constant work rate exercise in patients with chronic obstructive pulmonary disease BJMBR
Takara,L.S.; Cunha,T.M.; Barbosa,P.; Rodrigues,M.K.; Oliveira,M.F.; Nery,L.E.; Neder,J.A..
This study evaluated the dynamic behavior of total and compartmental chest wall volumes [(V CW) = rib cage (V RC) + abdomen (V AB)] as measured breath-by-breath by optoelectronic plethysmography during constant-load exercise in patients with stable chronic obstructive pulmonary disease. Thirty males (GOLD stages II-III) underwent a cardiopulmonary exercise test to the limit of tolerance (Tlim) at 75% of peak work rate on an electronically braked cycle ergometer. Exercise-induced dynamic hyperinflation was considered to be present when end-expiratory (EE) V CW increased in relation to resting values. There was a noticeable heterogeneity in the patterns of V CW regulation as EEV CW increased non-linearly in 17/30 "hyperinflators" and decreased in 13/30...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exertion; Lung mechanics; COPD; Dyspnea; Exercise test.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001200024
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Effect of L-carnitine on exercise performance in patients with mitochondrial myopathy BJMBR
Gimenes,A.C.; Bravo,D.M.; Nápolis,L.M.; Mello,M.T.; Oliveira,A.S.B.; Neder,J.A.; Nery,L.E..
Exercise intolerance due to impaired oxidative metabolism is a prominent symptom in patients with mitochondrial myopathy (MM), but it is still uncertain whether L-carnitine supplementation is beneficial for patients with MM. The aim of our study was to investigate the effects of L-carnitine on exercise performance in MM. Twelve MM subjects (mean age±SD=35.4±10.8 years) with chronic progressive external ophthalmoplegia (CPEO) were first compared to 10 healthy controls (mean age±SD=29±7.8 years) before they were randomly assigned to receive L-carnitine supplementation (3 g/daily) or placebo in a double-blind crossover design. Clinical status, body composition, respiratory function tests, peripheral muscle strength (isokinetic and isometric torque) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exercise tolerance; Muscle strength; Mitochondrial myopathy; L-carnitine supplementation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000400354
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Identification of rounded atelectasis in workers exposed to asbestos by contrast helical computed tomography BJMBR
Terra-Filho,M.; Kavakama,J.; Bagatin,E.; Capelozzi,V.L.; Nery,L.E.; Tavares,R..
Rounded atelectasis (RA) is a benign and unusual form of subpleural lung collapse that has been described mostly in asbestos-exposed workers. This form of atelectasis manifests as a lung nodule and can be confused with bronchogenic carcinoma upon conventional radiologic examination. The objective of the present study was to evaluate the variation in contrast uptake in computed tomography for the identification of asbestos-related RA in Brazil. Between January 1998 and December 2000, high-resolution computed tomography (HRCT) was performed in 1658 asbestos-exposed workers. The diagnosis was made in nine patients based on a history of prior asbestos exposure, the presence of characteristic (HRCT) findings and lesions unchanged in size over 2 years or more....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rounded atelectasis; Asbestos; Helical computed tomography; Asbestos-exposed workers.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001000010
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Reference values for lung function tests: I. Static volumes BJMBR
Neder,J.A.; Andreoni,S.; Castelo-Filho,A.; Nery,L.E..
Static lung volume (LV) measurements have a number of clinical and research applications; however, no previous studies have provided reference values for such tests using a healthy sample of the adult Brazilian population. With this as our main purpose, we prospectively evaluated 100 non-smoking subjects (50 males and 50 females), 20 to 80 years old, randomly selected from more than 8,000 individuals. Gender-specific linear prediction equations were developed by multiple regression analysis with total lung capacity (TLC), functional residual capacity (FRC), residual volume (RV), RV/TLC ratio and inspiratory capacity (IC) as dependent variables, and with age, height, weight, lean body mass and indexes of physical fitness as independent ones. Simpler...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lung volumes; Pulmonary function tests; Pulmonary diseases.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000600006
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Reference values for lung function tests: II. Maximal respiratory pressures and voluntary ventilation BJMBR
Neder,J.A.; Andreoni,S.; Lerario,M.C.; Nery,L.E..
The strength of the respiratory muscles can be evaluated from static measurements (maximal inspiratory and expiratory pressures, MIP and MEP) or inferred from dynamic maneuvers (maximal voluntary ventilation, MVV). Although these data could be suitable for a number of clinical and research applications, no previous studies have provided reference values for such tests using a healthy, randomly selected sample of the adult Brazilian population. With this main purpose, we prospectively evaluated 100 non-smoking subjects (50 males and 50 females), 20 to 80 years old, selected from more than 8,000 individuals. Gender-specific linear prediction equations for MIP, MEP and MVV were developed by multiple regression analysis: age and, secondarily, anthropometric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Respiratory muscle strength; Maximal voluntary ventilation; Pulmonary function tests.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000600007
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Imprime registro no formato completo
Reference values for lung function tests: III. Carbon monoxide diffusing capacity (transfer factor) BJMBR
Neder,J.A.; Andreoni,S.; Peres,C.; Nery,L.E..
Carbon monoxide diffusing capacity (DLCO) or transfer factor (TLCO) is a particularly useful test of the appropriateness of gas exchange across the lung alveolocapillary membrane. With the purpose of establishing predictive equations for DLCO using a non-smoking sample of the adult Brazilian population, we prospectively evaluated 100 subjects (50 males and 50 females aged 20 to 80 years), randomly selected from more than 8,000 individuals. Gender-specific linear prediction equations were developed by multiple regression analysis with single breath (SB) absolute and volume-corrected (VA) DLCO values as dependent variables. In the prediction equations, age (years) and height (cm) had opposite effects on DLCOSB (ml min-1 mmHg-1), independent of gender (-0.13...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lung diffusing capacity; Pulmonary function tests; Maximal oxygen consumption.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000600008
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Imprime registro no formato completo
Relationship between work rate and oxygen uptake in mitochondrial myopathy during ramp-incremental exercise BJMBR
Gimenes,A.C.; Neder,J.A.; Dal Corso,S.; Nogueira,C.R.; Nápolis,L.; Mello,M.T.; Bulle,A.S.; Nery,L.E..
We determined the response characteristics and functional correlates of the dynamic relationship between the rate (Δ) of oxygen consumption ( <img border=0 width=11 height=13 src="548_files/image001.gif" v:shapes="_x0000_i1188">O2) and the applied power output (work rate = WR) during ramp-incremental exercise in patients with mitochondrial myopathy (MM). Fourteen patients (7 males, age 35.4 ± 10.8 years) with biopsy-proven MM and 10 sedentary controls (6 males, age 29.0 ± 7.8 years) took a ramp-incremental cycle ergometer test for the determination of the <img border=0 width=11 height=13 src="548_files/image001.gif" v:shapes="_x0000_i1189">O2 on-exercise mean response time (MRT) and the gas exchange threshold (GET). The Δ<img border=0...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Muscular diseases; Oxygen consumption; Cardiopulmonary exercise testing; Skeletal muscle; Pathophysiology; Mitochondrial myopathy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000400013
Registros recuperados: 10
Primeira ... 1 ... Última
 

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