The Experts below are selected from a list of 41793 Experts worldwide ranked by ideXlab platform
Tatsushi Toda - One of the best experts on this subject based on the ideXlab platform.
-
ultrasonographic diaphragm thickness correlates with compound muscle action potential amplitude and Forced Vital Capacity
Muscle & Nerve, 2016Co-Authors: Yoshikatsu Noda, Kenji Sekiguchi, Nobuo Kohara, Fumio Kanda, Tatsushi TodaAbstract:Introduction: Noninvasive evaluation of respiratory function in patients with various neuromuscular disorders is important for predicting life expectancy. Methods: We performed B-mode ultrasonography (USG) and nerve conduction studies in 37 patients (16 had amyotrophic lateral sclerosis; 11, myopathy; and 10, neuropathy) and 10 controls. USG of the diaphragm was performed in the supine position using a linear probe over the intercostal space at the anterior axillary line. Diaphragm muscle thickness was measured at end-expiration. The amplitude of diaphragm compound muscle action potentials (CMAP) was obtained by phrenic nerve stimulation with a surface electrode. Respiratory function was measured with standard pulmonary function tests including Forced Vital Capacity (FVC). Results: Diaphragm thickness was significantly correlated with FVC (r = 0.74) and CMAP amplitude (r = 0.53). Conclusions: Diaphragm USG is useful for objective evaluation of pulmonary function in neuromuscular disorders without requiring undue patient effort or cooperation. Muscle Nerve, 2015
-
ultrasonographic diaphragm thickness correlates with compound muscle action potential amplitude and Forced Vital Capacity
Muscle & Nerve, 2016Co-Authors: Yoshikatsu Noda, Kenji Sekiguchi, Nobuo Kohara, Fumio Kanda, Tatsushi TodaAbstract:Introduction Noninvasive evaluation of respiratory function in patients with various neuromuscular disorders is important for predicting life expectancy. Methods We performed B-mode ultrasonography (USG) and nerve conduction studies in 37 patients (16 had amyotrophic lateral sclerosis; 11, myopathy; and 10, neuropathy) and 10 controls. USG of the diaphragm was performed in the supine position using a linear probe over the intercostal space at the anterior axillary line. Diaphragm muscle thickness was measured at end-expiration. The amplitude of diaphragm compound muscle action potentials (CMAP) was obtained by phrenic nerve stimulation with a surface electrode. Respiratory function was measured with standard pulmonary function tests including Forced Vital Capacity (FVC). Results Diaphragm thickness was significantly correlated with FVC (r = 0.74) and CMAP amplitude (r = 0.53). Conclusions Diaphragm USG is useful for objective evaluation of pulmonary function in neuromuscular disorders without requiring undue patient effort or cooperation.
Walter Vincken - One of the best experts on this subject based on the ideXlab platform.
-
Forced Vital Capacity and Forced expiratory volume in six seconds as predictors of reduced total lung Capacity
European Respiratory Journal, 2008Co-Authors: Jan Vandevoorde, L. Broekaert, Jan Kartounian, Dirk Devroey, Daniel Schuermans, Sylvia Verbanck, Walter VinckenAbstract:The present study aims to derive guidelines that identify patients for whom spirometry can reliably predict a reduced total lung Capacity (TLC). A total of 12,693 lung function tests were analysed on Caucasian subjects, aged 18–70 yrs. Restriction was defined as a reduced TLC. Lower limits of normal (LLN) for TLC were obtained from the European Respiratory Society recommended reference equations. Reference equations from the National Health and Nutrition Examination Survey III were used for Forced Vital Capacity (FVC) and Forced expiratory volume in six seconds (FEV6). The performance of FVC and FEV6 to predict the presence of restriction was studied as follows: 1) using two-by-two (2×2) tables; and 2) by logistic regression analysis. Both analyses were performed in obstructive (defined as Forced expiratory volume in one second (FEV1)/FVC or FEV1/FEV6
-
Forced Vital Capacity and Forced expiratory volume in six seconds as predictors of reduced total lung Capacity
European Respiratory Journal, 2008Co-Authors: Jan Vandevoorde, L. Broekaert, Jan Kartounian, Dirk Devroey, Daniel Schuermans, Sylvia Verbanck, Walter VinckenAbstract:The present study aims to derive guidelines that identify patients for whom spirometry can reliably predict a reduced total lung Capacity (TLC). A total of 12,693 lung function tests were analysed on Caucasian subjects, aged 18-70 yrs. Restriction was defined as a reduced TLC. Lower limits of normal (LLN) for TLC were obtained from the European Respiratory Society recommended reference equations. Reference equations from the National Health and Nutrition Examination Survey III were used for Forced Vital Capacity (FVC) and Forced expiratory volume in six seconds (FEV(6)). The performance of FVC and FEV(6) to predict the presence of restriction was studied as follows: 1) using two-by-two (2x2) tables; and 2) by logistic regression analysis. Both analyses were performed in obstructive (defined as Forced expiratory volume in one second (FEV(1))/FVC or FEV(1)/FEV(6) 100% pred (males) or >85% pred (females). In obstructive patients, spirometry cannot reliably diagnose a concomitant restrictive defect, but it can rule out restriction for patients with Forced Vital Capacity or Forced expiratory volume in six seconds >85% pred (males) or >70% pred (females).
-
Forced Vital Capacity and Forced expiratory volume in six seconds as predictors of reduced total lung Capacity.
European Respiratory Journal, 2007Co-Authors: Jan Vandevoorde, L. Broekaert, Jan Kartounian, Dirk Devroey, Daniel Schuermans, Sylvia Verbanck, Walter VinckenAbstract:The present study aims to derive guidelines that identify patients for whom spirometry can reliably predict a reduced total lung Capacity (TLC). A total of 12,693 lung function tests were analysed on Caucasian subjects, aged 18–70 yrs. Restriction was defined as a reduced TLC. Lower limits of normal (LLN) for TLC were obtained from the European Respiratory Society recommended reference equations. Reference equations from the National Health and Nutrition Examination Survey III were used for Forced Vital Capacity (FVC) and Forced expiratory volume in six seconds (FEV6). The performance of FVC and FEV6 to predict the presence of restriction was studied as follows: 1) using two-by-two (2×2) tables; and 2) by logistic regression analysis. Both analyses were performed in obstructive (defined as Forced expiratory volume in one second (FEV1)/FVC or FEV1/FEV6 85% pred (females). In obstructive patients, spirometry cannot reliably diagnose a concomitant restrictive defect, but it can rule out restriction for patients with Forced Vital Capacity or Forced expiratory volume in six seconds >85% pred (males) or >70% pred (females).
Yoshikatsu Noda - One of the best experts on this subject based on the ideXlab platform.
-
ultrasonographic diaphragm thickness correlates with compound muscle action potential amplitude and Forced Vital Capacity
Muscle & Nerve, 2016Co-Authors: Yoshikatsu Noda, Kenji Sekiguchi, Nobuo Kohara, Fumio Kanda, Tatsushi TodaAbstract:Introduction: Noninvasive evaluation of respiratory function in patients with various neuromuscular disorders is important for predicting life expectancy. Methods: We performed B-mode ultrasonography (USG) and nerve conduction studies in 37 patients (16 had amyotrophic lateral sclerosis; 11, myopathy; and 10, neuropathy) and 10 controls. USG of the diaphragm was performed in the supine position using a linear probe over the intercostal space at the anterior axillary line. Diaphragm muscle thickness was measured at end-expiration. The amplitude of diaphragm compound muscle action potentials (CMAP) was obtained by phrenic nerve stimulation with a surface electrode. Respiratory function was measured with standard pulmonary function tests including Forced Vital Capacity (FVC). Results: Diaphragm thickness was significantly correlated with FVC (r = 0.74) and CMAP amplitude (r = 0.53). Conclusions: Diaphragm USG is useful for objective evaluation of pulmonary function in neuromuscular disorders without requiring undue patient effort or cooperation. Muscle Nerve, 2015
-
ultrasonographic diaphragm thickness correlates with compound muscle action potential amplitude and Forced Vital Capacity
Muscle & Nerve, 2016Co-Authors: Yoshikatsu Noda, Kenji Sekiguchi, Nobuo Kohara, Fumio Kanda, Tatsushi TodaAbstract:Introduction Noninvasive evaluation of respiratory function in patients with various neuromuscular disorders is important for predicting life expectancy. Methods We performed B-mode ultrasonography (USG) and nerve conduction studies in 37 patients (16 had amyotrophic lateral sclerosis; 11, myopathy; and 10, neuropathy) and 10 controls. USG of the diaphragm was performed in the supine position using a linear probe over the intercostal space at the anterior axillary line. Diaphragm muscle thickness was measured at end-expiration. The amplitude of diaphragm compound muscle action potentials (CMAP) was obtained by phrenic nerve stimulation with a surface electrode. Respiratory function was measured with standard pulmonary function tests including Forced Vital Capacity (FVC). Results Diaphragm thickness was significantly correlated with FVC (r = 0.74) and CMAP amplitude (r = 0.53). Conclusions Diaphragm USG is useful for objective evaluation of pulmonary function in neuromuscular disorders without requiring undue patient effort or cooperation.
Jan Vandevoorde - One of the best experts on this subject based on the ideXlab platform.
-
Forced Vital Capacity and Forced expiratory volume in six seconds as predictors of reduced total lung Capacity
European Respiratory Journal, 2008Co-Authors: Jan Vandevoorde, L. Broekaert, Jan Kartounian, Dirk Devroey, Daniel Schuermans, Sylvia Verbanck, Walter VinckenAbstract:The present study aims to derive guidelines that identify patients for whom spirometry can reliably predict a reduced total lung Capacity (TLC). A total of 12,693 lung function tests were analysed on Caucasian subjects, aged 18–70 yrs. Restriction was defined as a reduced TLC. Lower limits of normal (LLN) for TLC were obtained from the European Respiratory Society recommended reference equations. Reference equations from the National Health and Nutrition Examination Survey III were used for Forced Vital Capacity (FVC) and Forced expiratory volume in six seconds (FEV6). The performance of FVC and FEV6 to predict the presence of restriction was studied as follows: 1) using two-by-two (2×2) tables; and 2) by logistic regression analysis. Both analyses were performed in obstructive (defined as Forced expiratory volume in one second (FEV1)/FVC or FEV1/FEV6
-
Forced Vital Capacity and Forced expiratory volume in six seconds as predictors of reduced total lung Capacity
European Respiratory Journal, 2008Co-Authors: Jan Vandevoorde, L. Broekaert, Jan Kartounian, Dirk Devroey, Daniel Schuermans, Sylvia Verbanck, Walter VinckenAbstract:The present study aims to derive guidelines that identify patients for whom spirometry can reliably predict a reduced total lung Capacity (TLC). A total of 12,693 lung function tests were analysed on Caucasian subjects, aged 18-70 yrs. Restriction was defined as a reduced TLC. Lower limits of normal (LLN) for TLC were obtained from the European Respiratory Society recommended reference equations. Reference equations from the National Health and Nutrition Examination Survey III were used for Forced Vital Capacity (FVC) and Forced expiratory volume in six seconds (FEV(6)). The performance of FVC and FEV(6) to predict the presence of restriction was studied as follows: 1) using two-by-two (2x2) tables; and 2) by logistic regression analysis. Both analyses were performed in obstructive (defined as Forced expiratory volume in one second (FEV(1))/FVC or FEV(1)/FEV(6) 100% pred (males) or >85% pred (females). In obstructive patients, spirometry cannot reliably diagnose a concomitant restrictive defect, but it can rule out restriction for patients with Forced Vital Capacity or Forced expiratory volume in six seconds >85% pred (males) or >70% pred (females).
-
Forced Vital Capacity and Forced expiratory volume in six seconds as predictors of reduced total lung Capacity.
European Respiratory Journal, 2007Co-Authors: Jan Vandevoorde, L. Broekaert, Jan Kartounian, Dirk Devroey, Daniel Schuermans, Sylvia Verbanck, Walter VinckenAbstract:The present study aims to derive guidelines that identify patients for whom spirometry can reliably predict a reduced total lung Capacity (TLC). A total of 12,693 lung function tests were analysed on Caucasian subjects, aged 18–70 yrs. Restriction was defined as a reduced TLC. Lower limits of normal (LLN) for TLC were obtained from the European Respiratory Society recommended reference equations. Reference equations from the National Health and Nutrition Examination Survey III were used for Forced Vital Capacity (FVC) and Forced expiratory volume in six seconds (FEV6). The performance of FVC and FEV6 to predict the presence of restriction was studied as follows: 1) using two-by-two (2×2) tables; and 2) by logistic regression analysis. Both analyses were performed in obstructive (defined as Forced expiratory volume in one second (FEV1)/FVC or FEV1/FEV6 85% pred (females). In obstructive patients, spirometry cannot reliably diagnose a concomitant restrictive defect, but it can rule out restriction for patients with Forced Vital Capacity or Forced expiratory volume in six seconds >85% pred (males) or >70% pred (females).
-
Is Forced expiratory volume in six seconds a valid alternative to Forced Vital Capacity
European Respiratory Journal, 2006Co-Authors: Jan Vandevoorde, M. SwanneyAbstract:To the Editors: We have read with interest the article by Hansen et al. 1 in a recent issue of the European Respiratory Journal , stating that the use of Forced expiratory volume in six seconds (FEV6) reduces the sensitivity of obstructive lung disease detection. Their study population of 3,515 current smokers, with a 17.5% prevalence of obstruction, found a sensitivity of only 76.8% and a specificity of 98.2% when comparing FEV1/FEV6 with FEV1/Forced Vital Capacity (FVC) below their respective 95% lower limits of normal (LLN). Based on this low sensitivity, Hansen et al. 1 concluded that FEV1/FEV6 is less reliable than FEV1/FVC as a screening parameter for the detection of obstruction. The lower sensitivity obtained by Hansen et al. 1 with respect to previous studies, in which sensitivity typically ranged between 92–95% 2–5, was attributed to differences in study population. Hansen et al. 1 contended that previous studies …
Fumio Kanda - One of the best experts on this subject based on the ideXlab platform.
-
ultrasonographic diaphragm thickness correlates with compound muscle action potential amplitude and Forced Vital Capacity
Muscle & Nerve, 2016Co-Authors: Yoshikatsu Noda, Kenji Sekiguchi, Nobuo Kohara, Fumio Kanda, Tatsushi TodaAbstract:Introduction: Noninvasive evaluation of respiratory function in patients with various neuromuscular disorders is important for predicting life expectancy. Methods: We performed B-mode ultrasonography (USG) and nerve conduction studies in 37 patients (16 had amyotrophic lateral sclerosis; 11, myopathy; and 10, neuropathy) and 10 controls. USG of the diaphragm was performed in the supine position using a linear probe over the intercostal space at the anterior axillary line. Diaphragm muscle thickness was measured at end-expiration. The amplitude of diaphragm compound muscle action potentials (CMAP) was obtained by phrenic nerve stimulation with a surface electrode. Respiratory function was measured with standard pulmonary function tests including Forced Vital Capacity (FVC). Results: Diaphragm thickness was significantly correlated with FVC (r = 0.74) and CMAP amplitude (r = 0.53). Conclusions: Diaphragm USG is useful for objective evaluation of pulmonary function in neuromuscular disorders without requiring undue patient effort or cooperation. Muscle Nerve, 2015
-
ultrasonographic diaphragm thickness correlates with compound muscle action potential amplitude and Forced Vital Capacity
Muscle & Nerve, 2016Co-Authors: Yoshikatsu Noda, Kenji Sekiguchi, Nobuo Kohara, Fumio Kanda, Tatsushi TodaAbstract:Introduction Noninvasive evaluation of respiratory function in patients with various neuromuscular disorders is important for predicting life expectancy. Methods We performed B-mode ultrasonography (USG) and nerve conduction studies in 37 patients (16 had amyotrophic lateral sclerosis; 11, myopathy; and 10, neuropathy) and 10 controls. USG of the diaphragm was performed in the supine position using a linear probe over the intercostal space at the anterior axillary line. Diaphragm muscle thickness was measured at end-expiration. The amplitude of diaphragm compound muscle action potentials (CMAP) was obtained by phrenic nerve stimulation with a surface electrode. Respiratory function was measured with standard pulmonary function tests including Forced Vital Capacity (FVC). Results Diaphragm thickness was significantly correlated with FVC (r = 0.74) and CMAP amplitude (r = 0.53). Conclusions Diaphragm USG is useful for objective evaluation of pulmonary function in neuromuscular disorders without requiring undue patient effort or cooperation.