Prospective. To analyze tidal volume (TV), minute volume (VE), respiratory frequency (f), vital c... more Prospective. To analyze tidal volume (TV), minute volume (VE), respiratory frequency (f), vital capacity (VC), maximal inspiratory (PImax), and expiratory (PEmax) pressures in patients submitted to spinal surgery for tumor or herniated disc by posterior access, and to investigate a possible association of respiratory function with surgery duration, site of surgical access, and diagnosis. A reduction in pulmonary volumes is usually seen in patients submitted to thoracic or upper abdominal surgery, and recent studies have demonstrated such alterations during the postoperative period in patients submitted to craniotomy. A total of 45 patients (mean age, 42 +/- 14 years) were submitted to spinal surgery in an University Hospital, and TV, VC, MV, f, PImax, and PEmax were measured in the preoperative period, and in the first and second postoperative days. Patients submitted to spinal surgery showed a decrease in the first and second postoperative days in VC, respectively (17% and 10%), TV (18% and 13%), PImax (17% and 12%), PEmax (12% and 7%), and an increase in f (18% and 12%) (P < 0.05). Reduction in TV, VC, PImax, and PEmax and the increase in f were associated with surgical time > or =240 minutes, diagnosis of tumor, and cervicothoracic surgical access (P < 0.05). Alterations in the respiratory function in the postoperative period of elective spinal surgery by posterior access for tumor removal or herniated disc were related to surgical time > or =240 minutes, tumor, or cervicothoracic surgical access.
Purpose: The aim of this study is to evaluate the walked distance and physiological responses dur... more Purpose: The aim of this study is to evaluate the walked distance and physiological responses during incremental shuttle walk test in patients with different degrees of adolescent idiopathic scoliosis (AIS). Methods: We evaluated 20 healthy teenagers and 46 patients with AIS; they were divided into 2 groups: AIS > 45° and AIS < 45°. The volunteers performed an incremental shuttle walk test, and the following physiological responses were quantified: oxygen consumption, tidal volume, ventilation, and the incremental shuttle walked distance. Respiratory muscle strength was quantified, pulmonary function test was performed, and the forced vital capacity and expiratory volume in the first second were obtained. Results: Patients with AIS > 45° presented significant reduced incremental shuttle walked distance compared with the AIS < 45° and control group [447 (85), 487 (95), and 603 (85), respectively]. Patients with AIS also showed reduced forced vital capacity (P = .001) and expiratory volume in the first second (P = .005) compared with control group. Moderate correlations between forced vital capacity (r = −.506) and tidal volume (r = −.476) with scoliosis angles were found. Conclusions: The incremental shuttle walk test was capable of identifying reduced functional capacity in patients with different degrees of AIS. Moreover, the severity of spinal curvature may exert influence on ventilatory and metabolic variables.
Objetivos. Evaluar la capacidad vital (CV), el volumen corriente, el volumen respiratorio por min... more Objetivos. Evaluar la capacidad vital (CV), el volumen corriente, el volumen respiratorio por minuto y la frecuencia respiratoria durante los primeros cuatro dias del periodo postoperatorio de la craneotomia electiva, y en que medida guardan relacion con el tabaquismo, las enfermedades asociadas y los sintomas respiratorios. Pacientes y metodos. Inicialmente, se evaluaron 94 pacientes para determinar la necesidad de practicar una craneotomia electiva, y se incluyeron en este estudio solamente en el caso de que presentaran un nivel de consciencia normal y respiracion espontanea en el primer dia del postoperatorio. Las evaluaciones preoperatorias y postoperatorias consistieron en una exploracion fisica y ventilometria hasta el cuarto dia del postoperatorio. Se utilizo el analisis de la varianza (ANOVA) de medidas repetidas para evaluar los datos de la ventilacion. El nivel de significacion adoptado para todas las pruebas estadisticas fue p = 0,05. Resultados. En este estudio se incluyeron 62 pacientes. Hubo una caida de la CV del 20% desde el primer al tercer dia del postoperatorio (p = 0,001). En el periodo preoperatorio, los pacientes con hipertension arterial sistemica presentaron una media de la CV mas baja (2,59 L) que la de los pacientes sin hipertension arterial sistemica (3,28 L) (p = 0,045). Tambien fue mas baja la CV media de los fumadores tanto en el periodo preoperatorio como en el postoperatorio (2,65 y 1,95 L, respectivamente) que la de los no fumadores (3,13 y 2,43 L), aunque la diferencia no fue estadisticamente significativa (p = 0,090). Conclusion. Tras una craneotomia electiva se produce una disminucion significativa de la CV inmediatamente despues de la intervencion quirurgica, que luego va mejorando de forma gradual; no hubo diferencias en la CV entre los pacientes fumadores y los no fumadores ni en el periodo preoperatorio ni en el postoperatorio.
Introduction: Patients with Adolescent Idiopathic Scoliosis (AIS) show reduced exercise capacity ... more Introduction: Patients with Adolescent Idiopathic Scoliosis (AIS) show reduced exercise capacity during the Incremental Shuttle Walk Test (ISWT). However, we not know how patients behave in the late postoperative (LPO) period. Objective: The aim of this study was to evaluate the ISWT distance (ISWTD) and physiological responses during ISWT in AIS patients during the LPO period. Methods: We included 22 patients with AIS in the LPO period (SG) and 21 adolescents in the Control Group (CG). We assessed pulmonary function (FVC and FEV1). During ISWT, a gas analyzer was used to assess peak oxygen (VO2) and submaximal relations: Oxygen Uptake Efficiency Slope (OUES) and the breathing pattern (ΔVT/ΔlnVE). Results: Significantly lower values were observed in SG: VO2 (22 ± 5 vs. 27 ± 4), ISWTD (567 ± 94 vs.604 ± 86), FVC (2.70 ± 0.47 vs. 3.33 ± 0.52) and FEV1 (2.41 ± 0.46 vs. 2.84 ± 0.52). There were significant correlations between ISWTD and VO2/Kg (r = 0.80); between OUES and ΔVT/ΔlnVE (r =...
Introduction: The spine deformity due to adolescent idiopathic scoliosis (AIS) generates respirat... more Introduction: The spine deformity due to adolescent idiopathic scoliosis (AIS) generates respiratory mechanical limitations that may reduce the physical activity performance. Objective: To evaluate the thoracic deformity, exercise capacity and lung function in AIS patients comparing to healthy adolescentes. Besides investigating associations between thoracic deformity and exercise capacity in AIS patients. Methods: Thirty-two AIS patients and 22 healthy adolescents underwent chest wall evaluation by photogrammetry. We created thoracic markers shaped as angles (A): A3 (xiphoid process and the last false rib on the right and left sides) and A5E (inframamilar / inferior angle of the scapula / left acromion). Individuals were submitted to incremental shuttle walk test (ISWT) and physiological responses were quantified: oxygen consumption (VO2), tidal volume (VT), minute ventilation (VE), the rate of gas exchange (R) and the walked distance (ISWD). Pulmonary function test was performed a...
Introduction: Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional spine deformity that c... more Introduction: Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional spine deformity that creates changes in the rib cage biomechanics. Objective: Evaluate changes on the chest wall, quality of life and lung function on the preoperative and postoperative of arthrodesis in patients with AIS. Methods: Eighteen AIS patients with surgical indication for arthrodesis of both sexes aged between 11 and 18 years were evaluated. The evaluation of the chest was taken by using photogrammetry Postural Assessment Software (PAS). Thoracic markers were created using angles (A) and distances (D): A1 (bilateral acromion/manubrium), A2 (bilateral acromion/xiphoid process), A3 (bilateral rib/xiphoid process), A5 (acromion/scapula inferior angle/inframammilary), A6 (C7/acromion/T3), A7 (scapular irregularity) and D3 (xiphoid process to the anterior superior iliac spine). Spirometry and assessment of Quality of Life Questionnaire (SRS - 30) was performed. Evaluations were performed on the preoperat...
Objective: To evaluate the chest wall shape in patients with adolescent idiopathic scoliosis (AIS... more Objective: To evaluate the chest wall shape in patients with adolescent idiopathic scoliosis (AIS) in comparison to healthy subjects and the association between the chest wall shape with the spine deformity and lung function in patients with AIS. Methods: This cross-sectional study enrolled 30 AIS patients and 20 healthy subjects aged 11-18 years old. The Cobb angle evaluation was performed in AIS patients. The chest wall shape was assessed by the photogrammetry method, using the Postural Assessment Software (PAS). We created thoracic markers shaped as angles (A) and distances (D), as follows: A2 (right acromion/xiphoid/left acromion), A4L (angle formed between the outer point of the smallest waist circumference and its upper and lower edges on the left side), A7 (angle formed by the intersection of the tangent segments of the upper and lower scapulae angles), D1R/D1L [distance between the xiphoid process and the last false rib on the right (R) and left (L) sides], and D3 (distance ...
Prospective. To analyze tidal volume (TV), minute volume (VE), respiratory frequency (f), vital c... more Prospective. To analyze tidal volume (TV), minute volume (VE), respiratory frequency (f), vital capacity (VC), maximal inspiratory (PImax), and expiratory (PEmax) pressures in patients submitted to spinal surgery for tumor or herniated disc by posterior access, and to investigate a possible association of respiratory function with surgery duration, site of surgical access, and diagnosis. A reduction in pulmonary volumes is usually seen in patients submitted to thoracic or upper abdominal surgery, and recent studies have demonstrated such alterations during the postoperative period in patients submitted to craniotomy. A total of 45 patients (mean age, 42 +/- 14 years) were submitted to spinal surgery in an University Hospital, and TV, VC, MV, f, PImax, and PEmax were measured in the preoperative period, and in the first and second postoperative days. Patients submitted to spinal surgery showed a decrease in the first and second postoperative days in VC, respectively (17% and 10%), TV (18% and 13%), PImax (17% and 12%), PEmax (12% and 7%), and an increase in f (18% and 12%) (P < 0.05). Reduction in TV, VC, PImax, and PEmax and the increase in f were associated with surgical time > or =240 minutes, diagnosis of tumor, and cervicothoracic surgical access (P < 0.05). Alterations in the respiratory function in the postoperative period of elective spinal surgery by posterior access for tumor removal or herniated disc were related to surgical time > or =240 minutes, tumor, or cervicothoracic surgical access.
Purpose: The aim of this study is to evaluate the walked distance and physiological responses dur... more Purpose: The aim of this study is to evaluate the walked distance and physiological responses during incremental shuttle walk test in patients with different degrees of adolescent idiopathic scoliosis (AIS). Methods: We evaluated 20 healthy teenagers and 46 patients with AIS; they were divided into 2 groups: AIS > 45° and AIS < 45°. The volunteers performed an incremental shuttle walk test, and the following physiological responses were quantified: oxygen consumption, tidal volume, ventilation, and the incremental shuttle walked distance. Respiratory muscle strength was quantified, pulmonary function test was performed, and the forced vital capacity and expiratory volume in the first second were obtained. Results: Patients with AIS > 45° presented significant reduced incremental shuttle walked distance compared with the AIS < 45° and control group [447 (85), 487 (95), and 603 (85), respectively]. Patients with AIS also showed reduced forced vital capacity (P = .001) and expiratory volume in the first second (P = .005) compared with control group. Moderate correlations between forced vital capacity (r = −.506) and tidal volume (r = −.476) with scoliosis angles were found. Conclusions: The incremental shuttle walk test was capable of identifying reduced functional capacity in patients with different degrees of AIS. Moreover, the severity of spinal curvature may exert influence on ventilatory and metabolic variables.
Objetivos. Evaluar la capacidad vital (CV), el volumen corriente, el volumen respiratorio por min... more Objetivos. Evaluar la capacidad vital (CV), el volumen corriente, el volumen respiratorio por minuto y la frecuencia respiratoria durante los primeros cuatro dias del periodo postoperatorio de la craneotomia electiva, y en que medida guardan relacion con el tabaquismo, las enfermedades asociadas y los sintomas respiratorios. Pacientes y metodos. Inicialmente, se evaluaron 94 pacientes para determinar la necesidad de practicar una craneotomia electiva, y se incluyeron en este estudio solamente en el caso de que presentaran un nivel de consciencia normal y respiracion espontanea en el primer dia del postoperatorio. Las evaluaciones preoperatorias y postoperatorias consistieron en una exploracion fisica y ventilometria hasta el cuarto dia del postoperatorio. Se utilizo el analisis de la varianza (ANOVA) de medidas repetidas para evaluar los datos de la ventilacion. El nivel de significacion adoptado para todas las pruebas estadisticas fue p = 0,05. Resultados. En este estudio se incluyeron 62 pacientes. Hubo una caida de la CV del 20% desde el primer al tercer dia del postoperatorio (p = 0,001). En el periodo preoperatorio, los pacientes con hipertension arterial sistemica presentaron una media de la CV mas baja (2,59 L) que la de los pacientes sin hipertension arterial sistemica (3,28 L) (p = 0,045). Tambien fue mas baja la CV media de los fumadores tanto en el periodo preoperatorio como en el postoperatorio (2,65 y 1,95 L, respectivamente) que la de los no fumadores (3,13 y 2,43 L), aunque la diferencia no fue estadisticamente significativa (p = 0,090). Conclusion. Tras una craneotomia electiva se produce una disminucion significativa de la CV inmediatamente despues de la intervencion quirurgica, que luego va mejorando de forma gradual; no hubo diferencias en la CV entre los pacientes fumadores y los no fumadores ni en el periodo preoperatorio ni en el postoperatorio.
Introduction: Patients with Adolescent Idiopathic Scoliosis (AIS) show reduced exercise capacity ... more Introduction: Patients with Adolescent Idiopathic Scoliosis (AIS) show reduced exercise capacity during the Incremental Shuttle Walk Test (ISWT). However, we not know how patients behave in the late postoperative (LPO) period. Objective: The aim of this study was to evaluate the ISWT distance (ISWTD) and physiological responses during ISWT in AIS patients during the LPO period. Methods: We included 22 patients with AIS in the LPO period (SG) and 21 adolescents in the Control Group (CG). We assessed pulmonary function (FVC and FEV1). During ISWT, a gas analyzer was used to assess peak oxygen (VO2) and submaximal relations: Oxygen Uptake Efficiency Slope (OUES) and the breathing pattern (ΔVT/ΔlnVE). Results: Significantly lower values were observed in SG: VO2 (22 ± 5 vs. 27 ± 4), ISWTD (567 ± 94 vs.604 ± 86), FVC (2.70 ± 0.47 vs. 3.33 ± 0.52) and FEV1 (2.41 ± 0.46 vs. 2.84 ± 0.52). There were significant correlations between ISWTD and VO2/Kg (r = 0.80); between OUES and ΔVT/ΔlnVE (r =...
Introduction: The spine deformity due to adolescent idiopathic scoliosis (AIS) generates respirat... more Introduction: The spine deformity due to adolescent idiopathic scoliosis (AIS) generates respiratory mechanical limitations that may reduce the physical activity performance. Objective: To evaluate the thoracic deformity, exercise capacity and lung function in AIS patients comparing to healthy adolescentes. Besides investigating associations between thoracic deformity and exercise capacity in AIS patients. Methods: Thirty-two AIS patients and 22 healthy adolescents underwent chest wall evaluation by photogrammetry. We created thoracic markers shaped as angles (A): A3 (xiphoid process and the last false rib on the right and left sides) and A5E (inframamilar / inferior angle of the scapula / left acromion). Individuals were submitted to incremental shuttle walk test (ISWT) and physiological responses were quantified: oxygen consumption (VO2), tidal volume (VT), minute ventilation (VE), the rate of gas exchange (R) and the walked distance (ISWD). Pulmonary function test was performed a...
Introduction: Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional spine deformity that c... more Introduction: Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional spine deformity that creates changes in the rib cage biomechanics. Objective: Evaluate changes on the chest wall, quality of life and lung function on the preoperative and postoperative of arthrodesis in patients with AIS. Methods: Eighteen AIS patients with surgical indication for arthrodesis of both sexes aged between 11 and 18 years were evaluated. The evaluation of the chest was taken by using photogrammetry Postural Assessment Software (PAS). Thoracic markers were created using angles (A) and distances (D): A1 (bilateral acromion/manubrium), A2 (bilateral acromion/xiphoid process), A3 (bilateral rib/xiphoid process), A5 (acromion/scapula inferior angle/inframammilary), A6 (C7/acromion/T3), A7 (scapular irregularity) and D3 (xiphoid process to the anterior superior iliac spine). Spirometry and assessment of Quality of Life Questionnaire (SRS - 30) was performed. Evaluations were performed on the preoperat...
Objective: To evaluate the chest wall shape in patients with adolescent idiopathic scoliosis (AIS... more Objective: To evaluate the chest wall shape in patients with adolescent idiopathic scoliosis (AIS) in comparison to healthy subjects and the association between the chest wall shape with the spine deformity and lung function in patients with AIS. Methods: This cross-sectional study enrolled 30 AIS patients and 20 healthy subjects aged 11-18 years old. The Cobb angle evaluation was performed in AIS patients. The chest wall shape was assessed by the photogrammetry method, using the Postural Assessment Software (PAS). We created thoracic markers shaped as angles (A) and distances (D), as follows: A2 (right acromion/xiphoid/left acromion), A4L (angle formed between the outer point of the smallest waist circumference and its upper and lower edges on the left side), A7 (angle formed by the intersection of the tangent segments of the upper and lower scapulae angles), D1R/D1L [distance between the xiphoid process and the last false rib on the right (R) and left (L) sides], and D3 (distance ...
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Papers by Milena Vidotto