The Experts below are selected from a list of 5175 Experts worldwide ranked by ideXlab platform
Wellington Pereira Yamaguti - One of the best experts on this subject based on the ideXlab platform.
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How much occlusion time is necessary to assess Maximal Inspiratory Pressure by the unidirectional expiratory valve method in subjects without artificial airway?
2019Co-Authors: Samantha Torres Grams, Elen Moda De Oliveira Azevedo, André Luis Pereira De Albuquerque, Christina May Moran De Brito, Karen Yumi Mota Kimoto, Wellington Pereira YamagutiAbstract:ABSTRACT The aim of this study was to determine how much occlusion time is necessary to obtain Maximal Inspiratory Pressure (MIP) by the unidirectional expiratory valve method in subjects without artificial airway. Thirty-one subjects aged 18-60 years were evaluated. MIP was evaluated by the standard method (MIPstan) and by the unidirectional expiratory valve method MIPuni, with the order of evaluation determined randomly by lot. For MIPuni measurement, a digital vacuum manometer was attached to a unidirectional expiratory valve and an orofacial mask for 20 seconds of occlusion. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of effort were partitioned at every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). The time intervals for obtaining MIPuni were compared with the one-way ANOVA test. The mean values of the standard method and the unidirectional expiratory valve method were compared using the paired Student’s t-test. The significance level was established at 5%. The mean values for the MIPstan (-102.5±23.9 cmH2O) presented a statistically significant difference as compared to the mean values for MIPuni (-117.3±24.8 cmH2O; p
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Unidirectional Expiratory Valve Method to Assess Maximal Inspiratory Pressure in Individuals without Artificial Airway.
PLOS ONE, 2015Co-Authors: Samantha Torres Grams, Karen Kimoto, Elen Moda De Oliveira Azevedo, Marina Lança, André Luis Pereira De Albuquerque, Christina May Moran De Brito, Wellington Pereira YamagutiAbstract:Introduction Maximal Inspiratory Pressure (MIP) is considered an effective method to estimate strength of Inspiratory muscles, but still leads to false positive diagnosis. Although MIP assessment with unidirectional expiratory valve method has been used in patients undergoing mechanical ventilation, no previous studies investigated the application of this method in subjects without artificial airway.
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How much time is necessary to assess Maximal Inspiratory Pressure by unidirectional expiratory valve method in subjects without artificial airway
European Respiratory Journal, 2014Co-Authors: Samantha Torres Grams, Karen Kimoto, Christina May Moran De Brito, Elen Azevedo, Wellington Pereira YamagutiAbstract:The most used method to evaluate Maximal Inspiratory Pressure is by maintaining maximum negative Pressure forced against an occluded airway (MIPsta). To overcome the need for collaboration during MIPsta, a new technique was developed using a unidirectional expiratory valve in patients undergoing invasive mechanical ventilation (MIPuni). For this evaluation, the occlusion should be maintained for at least 20 seconds to record Maximal Pressure. Recently, MIPuni has also been performed in subjects under spontaneous breathing without artificial airway. However, the necessary time to obtain MIPuni in subjects without artificial airway is still unknown. The aim of this study was to determine how much time is necessary to obtain MIPuni in subjects without artificial airway. Thirty-one subjects performed both MIPsta and MIPuni methods. For MIPuni, a digital vacuum manometer was attached to a unidirectional expiratory valve and a face mask for 20 seconds. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of observation were partitioned every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). MIPuni (117.3 ± 24.8 cmH2O; p
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how much time is necessary to assess Maximal Inspiratory Pressure by unidirectional expiratory valve method in subjects without artificial airway
European Respiratory Journal, 2014Co-Authors: Samantha Torres Grams, Karen Kimoto, Christina May Moran De Brito, Elen Azevedo, Wellington Pereira YamagutiAbstract:The most used method to evaluate Maximal Inspiratory Pressure is by maintaining maximum negative Pressure forced against an occluded airway (MIPsta). To overcome the need for collaboration during MIPsta, a new technique was developed using a unidirectional expiratory valve in patients undergoing invasive mechanical ventilation (MIPuni). For this evaluation, the occlusion should be maintained for at least 20 seconds to record Maximal Pressure. Recently, MIPuni has also been performed in subjects under spontaneous breathing without artificial airway. However, the necessary time to obtain MIPuni in subjects without artificial airway is still unknown. The aim of this study was to determine how much time is necessary to obtain MIPuni in subjects without artificial airway. Thirty-one subjects performed both MIPsta and MIPuni methods. For MIPuni, a digital vacuum manometer was attached to a unidirectional expiratory valve and a face mask for 20 seconds. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of observation were partitioned every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). MIPuni (117.3 ± 24.8 cmH2O; p<0.001) presented a statistically significant difference when compared to MIPsta (102.5 ± 23.9 cmH2O). Maximal peak values for MIPuni were achieved within the 20-second time window, which differed significantly from the peak values obtained during the 0-5s interval (p=0.036). We recommend that the occlusion should be maintained for at least 20 seconds to record MIPuni in subjects without artificial airway.
Frédéric Lofaso - One of the best experts on this subject based on the ideXlab platform.
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vital capacity versus Maximal Inspiratory Pressure in patients with guillain barre syndrome and myasthenia gravis
Neurocritical Care, 2012Co-Authors: Hélène Prigent, David Orlikowski, Nadège Letilly, Line Falaize, Djilali Annane, Tarek Sharshar, Frédéric LofasoAbstract:Background The objective is to determine whether Maximal Inspiratory Pressure (Pimax) measurement is more sensitive than vital capacity (VC) measurement to detect acute respiratory muscle failure considering a theoretical curvilinear relationship between volume and Pressure.
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Vital Capacity Versus Maximal Inspiratory Pressure in Patients with Guillain–Barré Syndrome and Myasthenia Gravis
Neurocritical Care, 2011Co-Authors: Hélène Prigent, David Orlikowski, Nadège Letilly, Line Falaize, Djilali Annane, Tarek Sharshar, Frédéric LofasoAbstract:Background The objective is to determine whether Maximal Inspiratory Pressure (Pimax) measurement is more sensitive than vital capacity (VC) measurement to detect acute respiratory muscle failure considering a theoretical curvilinear relationship between volume and Pressure.
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Perceived Inspiratory difficulty in neuromuscular patients with primary muscle disorders
Neuromuscular Disorders, 2004Co-Authors: Sandrine Hours, Line Falaize, Michèle Lejaille, Delphine Pozzi, Francoise Zerah-lancner, Jean-claude Raphaël, Frédéric LofasoAbstract:Intensity of perceived Inspiratory difficulty was investigated in 17 patients with severe respiratory insufficiency due to muscle disease, compared with healthy matched controls. Subjects breathed through a threshold valve generating a constant Inspiratory negative Pressure proportional to their Maximal Inspiratory Pressure. Four load levels ranging from 10 to 40% of the Maximal Inspiratory Pressure were applied in random order. Patients had significantly less perceived Inspiratory difficulty than controls at each load level expressed as a percentage of Maximal Inspiratory Pressure (P
Samantha Torres Grams - One of the best experts on this subject based on the ideXlab platform.
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How much occlusion time is necessary to assess Maximal Inspiratory Pressure by the unidirectional expiratory valve method in subjects without artificial airway?
2019Co-Authors: Samantha Torres Grams, Elen Moda De Oliveira Azevedo, André Luis Pereira De Albuquerque, Christina May Moran De Brito, Karen Yumi Mota Kimoto, Wellington Pereira YamagutiAbstract:ABSTRACT The aim of this study was to determine how much occlusion time is necessary to obtain Maximal Inspiratory Pressure (MIP) by the unidirectional expiratory valve method in subjects without artificial airway. Thirty-one subjects aged 18-60 years were evaluated. MIP was evaluated by the standard method (MIPstan) and by the unidirectional expiratory valve method MIPuni, with the order of evaluation determined randomly by lot. For MIPuni measurement, a digital vacuum manometer was attached to a unidirectional expiratory valve and an orofacial mask for 20 seconds of occlusion. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of effort were partitioned at every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). The time intervals for obtaining MIPuni were compared with the one-way ANOVA test. The mean values of the standard method and the unidirectional expiratory valve method were compared using the paired Student’s t-test. The significance level was established at 5%. The mean values for the MIPstan (-102.5±23.9 cmH2O) presented a statistically significant difference as compared to the mean values for MIPuni (-117.3±24.8 cmH2O; p
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Unidirectional Expiratory Valve Method to Assess Maximal Inspiratory Pressure in Individuals without Artificial Airway.
PLOS ONE, 2015Co-Authors: Samantha Torres Grams, Karen Kimoto, Elen Moda De Oliveira Azevedo, Marina Lança, André Luis Pereira De Albuquerque, Christina May Moran De Brito, Wellington Pereira YamagutiAbstract:Introduction Maximal Inspiratory Pressure (MIP) is considered an effective method to estimate strength of Inspiratory muscles, but still leads to false positive diagnosis. Although MIP assessment with unidirectional expiratory valve method has been used in patients undergoing mechanical ventilation, no previous studies investigated the application of this method in subjects without artificial airway.
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How much time is necessary to assess Maximal Inspiratory Pressure by unidirectional expiratory valve method in subjects without artificial airway
European Respiratory Journal, 2014Co-Authors: Samantha Torres Grams, Karen Kimoto, Christina May Moran De Brito, Elen Azevedo, Wellington Pereira YamagutiAbstract:The most used method to evaluate Maximal Inspiratory Pressure is by maintaining maximum negative Pressure forced against an occluded airway (MIPsta). To overcome the need for collaboration during MIPsta, a new technique was developed using a unidirectional expiratory valve in patients undergoing invasive mechanical ventilation (MIPuni). For this evaluation, the occlusion should be maintained for at least 20 seconds to record Maximal Pressure. Recently, MIPuni has also been performed in subjects under spontaneous breathing without artificial airway. However, the necessary time to obtain MIPuni in subjects without artificial airway is still unknown. The aim of this study was to determine how much time is necessary to obtain MIPuni in subjects without artificial airway. Thirty-one subjects performed both MIPsta and MIPuni methods. For MIPuni, a digital vacuum manometer was attached to a unidirectional expiratory valve and a face mask for 20 seconds. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of observation were partitioned every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). MIPuni (117.3 ± 24.8 cmH2O; p
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how much time is necessary to assess Maximal Inspiratory Pressure by unidirectional expiratory valve method in subjects without artificial airway
European Respiratory Journal, 2014Co-Authors: Samantha Torres Grams, Karen Kimoto, Christina May Moran De Brito, Elen Azevedo, Wellington Pereira YamagutiAbstract:The most used method to evaluate Maximal Inspiratory Pressure is by maintaining maximum negative Pressure forced against an occluded airway (MIPsta). To overcome the need for collaboration during MIPsta, a new technique was developed using a unidirectional expiratory valve in patients undergoing invasive mechanical ventilation (MIPuni). For this evaluation, the occlusion should be maintained for at least 20 seconds to record Maximal Pressure. Recently, MIPuni has also been performed in subjects under spontaneous breathing without artificial airway. However, the necessary time to obtain MIPuni in subjects without artificial airway is still unknown. The aim of this study was to determine how much time is necessary to obtain MIPuni in subjects without artificial airway. Thirty-one subjects performed both MIPsta and MIPuni methods. For MIPuni, a digital vacuum manometer was attached to a unidirectional expiratory valve and a face mask for 20 seconds. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of observation were partitioned every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). MIPuni (117.3 ± 24.8 cmH2O; p<0.001) presented a statistically significant difference when compared to MIPsta (102.5 ± 23.9 cmH2O). Maximal peak values for MIPuni were achieved within the 20-second time window, which differed significantly from the peak values obtained during the 0-5s interval (p=0.036). We recommend that the occlusion should be maintained for at least 20 seconds to record MIPuni in subjects without artificial airway.
Hélène Prigent - One of the best experts on this subject based on the ideXlab platform.
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vital capacity versus Maximal Inspiratory Pressure in patients with guillain barre syndrome and myasthenia gravis
Neurocritical Care, 2012Co-Authors: Hélène Prigent, David Orlikowski, Nadège Letilly, Line Falaize, Djilali Annane, Tarek Sharshar, Frédéric LofasoAbstract:Background The objective is to determine whether Maximal Inspiratory Pressure (Pimax) measurement is more sensitive than vital capacity (VC) measurement to detect acute respiratory muscle failure considering a theoretical curvilinear relationship between volume and Pressure.
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Vital Capacity Versus Maximal Inspiratory Pressure in Patients with Guillain–Barré Syndrome and Myasthenia Gravis
Neurocritical Care, 2011Co-Authors: Hélène Prigent, David Orlikowski, Nadège Letilly, Line Falaize, Djilali Annane, Tarek Sharshar, Frédéric LofasoAbstract:Background The objective is to determine whether Maximal Inspiratory Pressure (Pimax) measurement is more sensitive than vital capacity (VC) measurement to detect acute respiratory muscle failure considering a theoretical curvilinear relationship between volume and Pressure.
Christina May Moran De Brito - One of the best experts on this subject based on the ideXlab platform.
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How much occlusion time is necessary to assess Maximal Inspiratory Pressure by the unidirectional expiratory valve method in subjects without artificial airway?
2019Co-Authors: Samantha Torres Grams, Elen Moda De Oliveira Azevedo, André Luis Pereira De Albuquerque, Christina May Moran De Brito, Karen Yumi Mota Kimoto, Wellington Pereira YamagutiAbstract:ABSTRACT The aim of this study was to determine how much occlusion time is necessary to obtain Maximal Inspiratory Pressure (MIP) by the unidirectional expiratory valve method in subjects without artificial airway. Thirty-one subjects aged 18-60 years were evaluated. MIP was evaluated by the standard method (MIPstan) and by the unidirectional expiratory valve method MIPuni, with the order of evaluation determined randomly by lot. For MIPuni measurement, a digital vacuum manometer was attached to a unidirectional expiratory valve and an orofacial mask for 20 seconds of occlusion. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of effort were partitioned at every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). The time intervals for obtaining MIPuni were compared with the one-way ANOVA test. The mean values of the standard method and the unidirectional expiratory valve method were compared using the paired Student’s t-test. The significance level was established at 5%. The mean values for the MIPstan (-102.5±23.9 cmH2O) presented a statistically significant difference as compared to the mean values for MIPuni (-117.3±24.8 cmH2O; p
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Unidirectional Expiratory Valve Method to Assess Maximal Inspiratory Pressure in Individuals without Artificial Airway.
PLOS ONE, 2015Co-Authors: Samantha Torres Grams, Karen Kimoto, Elen Moda De Oliveira Azevedo, Marina Lança, André Luis Pereira De Albuquerque, Christina May Moran De Brito, Wellington Pereira YamagutiAbstract:Introduction Maximal Inspiratory Pressure (MIP) is considered an effective method to estimate strength of Inspiratory muscles, but still leads to false positive diagnosis. Although MIP assessment with unidirectional expiratory valve method has been used in patients undergoing mechanical ventilation, no previous studies investigated the application of this method in subjects without artificial airway.
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How much time is necessary to assess Maximal Inspiratory Pressure by unidirectional expiratory valve method in subjects without artificial airway
European Respiratory Journal, 2014Co-Authors: Samantha Torres Grams, Karen Kimoto, Christina May Moran De Brito, Elen Azevedo, Wellington Pereira YamagutiAbstract:The most used method to evaluate Maximal Inspiratory Pressure is by maintaining maximum negative Pressure forced against an occluded airway (MIPsta). To overcome the need for collaboration during MIPsta, a new technique was developed using a unidirectional expiratory valve in patients undergoing invasive mechanical ventilation (MIPuni). For this evaluation, the occlusion should be maintained for at least 20 seconds to record Maximal Pressure. Recently, MIPuni has also been performed in subjects under spontaneous breathing without artificial airway. However, the necessary time to obtain MIPuni in subjects without artificial airway is still unknown. The aim of this study was to determine how much time is necessary to obtain MIPuni in subjects without artificial airway. Thirty-one subjects performed both MIPsta and MIPuni methods. For MIPuni, a digital vacuum manometer was attached to a unidirectional expiratory valve and a face mask for 20 seconds. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of observation were partitioned every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). MIPuni (117.3 ± 24.8 cmH2O; p
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how much time is necessary to assess Maximal Inspiratory Pressure by unidirectional expiratory valve method in subjects without artificial airway
European Respiratory Journal, 2014Co-Authors: Samantha Torres Grams, Karen Kimoto, Christina May Moran De Brito, Elen Azevedo, Wellington Pereira YamagutiAbstract:The most used method to evaluate Maximal Inspiratory Pressure is by maintaining maximum negative Pressure forced against an occluded airway (MIPsta). To overcome the need for collaboration during MIPsta, a new technique was developed using a unidirectional expiratory valve in patients undergoing invasive mechanical ventilation (MIPuni). For this evaluation, the occlusion should be maintained for at least 20 seconds to record Maximal Pressure. Recently, MIPuni has also been performed in subjects under spontaneous breathing without artificial airway. However, the necessary time to obtain MIPuni in subjects without artificial airway is still unknown. The aim of this study was to determine how much time is necessary to obtain MIPuni in subjects without artificial airway. Thirty-one subjects performed both MIPsta and MIPuni methods. For MIPuni, a digital vacuum manometer was attached to a unidirectional expiratory valve and a face mask for 20 seconds. During this period, all subjects were encouraged to make Maximal respiratory efforts. To define the optimum duration of the maneuver, the 20 seconds of observation were partitioned every five-second interval (0-5s, 0-10s, 0-15s, 0-20s). MIPuni (117.3 ± 24.8 cmH2O; p<0.001) presented a statistically significant difference when compared to MIPsta (102.5 ± 23.9 cmH2O). Maximal peak values for MIPuni were achieved within the 20-second time window, which differed significantly from the peak values obtained during the 0-5s interval (p=0.036). We recommend that the occlusion should be maintained for at least 20 seconds to record MIPuni in subjects without artificial airway.