RESUMO
Manual lymphatic drainage (MLD), intermittent sequential pneumatic therapy (ISPT), multilayered bandages (MLB), and compression garments are main techniques in conservative treatment of peripheral lymphedema. Since 1990, it has been thought that ISPT applied to both lower limbs simultaneously should not be used for patients with heart failure because right atrial, pulmonary arterial, and pulmonary wedge pressures may increase to a critical point. In 2005, these same results were observed in patients with heart failure wearing MLB. For these reasons, MLB and ISPT have been contraindicated during lymphedema treatment in cardiac patients. The aim of this study was to determine if we may continue the treatment of lower limb lymphedema using MLD in patients with heart failure. We evaluated hemodynamic parameters using echography during MLD in patients with cardiac disease and obtained circumferential measurements of the edematous limb before and after treatment. MLD treatment significantly decreased the limbs as expected. The heart rate also decreased following MLD in contrast with all other hemodynamic parameters which were not affected by MLD. The findings suggest that there is no contraindication to use MLD in patients with heart failure and lower limb edema.
Assuntos
Edema Cardíaco/terapia , Insuficiência Cardíaca/complicações , Hemodinâmica/fisiologia , Dispositivos de Compressão Pneumática Intermitente/efeitos adversos , Massagem/efeitos adversos , Meias de Compressão/efeitos adversos , Idoso , Edema Cardíaco/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
PURPOSE: To study the impact on radiotherapy planning of an automatically segmented target volume delineation based on (18F)-fluorodeoxy-D-glucose (FDG)-hybrid positron emission tomography-computed tomography (PET-CT) compared to a manually delineation based on computed tomography (CT) in oesophageal carcinoma patients. METHODS AND MATERIALS: Fifty-eight patients diagnosed with oesophageal cancer between September 2009 and November 2014 were included. The majority had squamous cell carcinoma (84.5 %), and advanced stage (37.9 % were stade IIIA) and 44.8 % had middle oesophageal lesion. Gross tumour volumes were retrospectively defined based either manually on CT or automatically on coregistered PET/CT images using three different threshold methods: standard-uptake value (SUV) of 2.5, 40 % of maximum intensity and signal-to-background ratio. Target volumes were compared in length, volume and using the index of conformality. Radiotherapy plans to the dose of 50Gy and 66Gy using intensity-modulated radiotherapy were generated and compared for both data sets. Planification target volume coverage and doses delivered to organs at risk (heart, lung and spinal cord) were compared. RESULTS: The gross tumour volume based manually on CT was significantly longer than that automatically based on signal-to-background ratio (6.4cm versus 5.3cm; P<0.008). Doses to the lungs (V20, Dmean), heart (V40), and spinal cord (Dmax) were significantly lower on plans using the PTVSBR. The PTVSBR coverage was statistically better than the PTVCT coverage on both plans. (50Gy: P<0.0004 and 66Gy: P<0.0006). CONCLUSION: The automatic PET segmentation algorithm based on the signal-to-background ratio method for the delineation of oesophageal tumours is interesting, and results in better target volume coverage and decreased dose to organs at risk. This may allow dose escalation up to 66Gy to the gross tumour volume.
Assuntos
Neoplasias Esofágicas/diagnóstico por imagem , Neoplasias Esofágicas/radioterapia , Fluordesoxiglucose F18 , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Compostos Radiofarmacêuticos , Planejamento da Radioterapia Assistida por Computador/métodos , Idoso , Idoso de 80 Anos ou mais , Neoplasias Esofágicas/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos RetrospectivosRESUMO
The relationships between V4 (the velocity for a blood lactate concentration of 4 mmol/litre) and V200 (the velocity for a heart rate of 200 bpm) and the performance indices of 223 healthy French trotters were analysed. They were divided into four age groups of three, four, five and six years and over, and into three performance groups (good, intermediate and poor performers) defined by the index of trot (ITR), an annual index of performance calculated by the national stud. V4 and V200 were assessed during the performance of a three-step standardised field exercise test, and four performance indexes (ITR, earnings, best time and the number of starts) were calculated for each group. An analysis of variance showed that V4 and V200 were highly correlated with the horses' age and level of performance (P<0.05). The correlation between the physiological variables and ITR was better for the three- and four-year-old horses than for the older horses.
Assuntos
Frequência Cardíaca/fisiologia , Cavalos/fisiologia , Ácido Láctico/sangue , Condicionamento Físico Animal/fisiologia , Fatores Etários , Análise de Variância , Animais , Teste de Esforço/veterinária , França , Cavalos/sangue , Resistência Física/fisiologiaRESUMO
Locomotion analysis is increasingly used to assess the gait of horses in the selection and training of equine athletes. We have developed a specific locomotor test for fast trotting harnessed horses that uses an accelerometric device. We describe here the reproducibility of the locomotor test and the validation of its use to analyse trotters on the racetrack. We measured the performance of eight horses under the same conditions three times in a single week. We then tested the influence of five tracks on the variables measured using eight different trotters every two days. The horses trotted at three or four velocities (8.3, 10, 11.7 m/s and at maximal velocity) in a straight line for 20 s. The short-term reproducibility of the test was very good for 23/25 variables, with no significant difference in the 23 variables for the three measurements. The two less reproducible variables reflected human error. The different tracks did not alter the stride variables measured. We conclude that the test is an easy, accurate method for analysing gait, as it provides reproducible stride variables for trotting harness horse under field conditions.
Assuntos
Teste de Esforço/veterinária , Marcha/fisiologia , Cavalos/fisiologia , Animais , Desenho de Equipamento , Teste de Esforço/instrumentação , Teste de Esforço/normas , Processamento de Imagem Assistida por Computador , Reprodutibilidade dos TestesRESUMO
Malakoplakia is a fairly rare disease, normally found in women (four out of every five cases). It mainly attacks the urinary system, but may spread to the other viscera. The symptoms are not clinically specific. The main interest of the disease is its pathogenesis, from which its treatment is derived. It is in fact an immunological dysfunction of the phagocytes, leading to chemical disorders in the macrophages. Its treatment is based on the use of cholinergic agonists and vitamin C therapy.
Assuntos
Doenças do Sistema Imunitário/complicações , Malacoplasia/etiologia , Feminino , Humanos , Macrófagos/análise , Malacoplasia/diagnóstico , Malacoplasia/imunologia , Masculino , Parassimpatomiméticos/uso terapêutico , Fagocitose , Doenças Urológicas/diagnóstico , Doenças Urológicas/etiologia , Doenças Urológicas/imunologiaRESUMO
Tubular ileal-ileo-caecal or colonic replacement enterocystoplasties induce nocturnal incontinence in more than 70% of cases, partly due to the presence of peristaltic waves responsible for pressures greater than 40 cm of water for low filling volumes. The use of debutularised intestinal grafts considerably attenuates these pressure waves, ensuring excellent diurnal continence and a dramatic reduction in nocturnal incontinence together with protection of the upper urinary tract. The detubularised ileal bladder combines the reliability of all low pressure reservoirs with a simple technique: a 30 cm ileal segment is isolated then opened 2 cm from its anti-mesenteric border. The two limbs of the loop are sutured to each other. The ureters are reimplanted at the summit of each limb according to the mucosal groove procedure and the summit of the pouch is anastomosed to the urethra. This procedure has been used in 10 patients following radical cystectomy for cancer. Seven of these patients underwent clinical, radiological and urodynamic examination 5 months after the operation: all 7 patients were continent during the day. Nocturnal continence was obtained at the cost of getting up one or twice during the night, but incontinence persisted in the other 3 patients. Cystometry did not reveal any pressure waves greater than 25 cm of water for a volume of 500 ml. The detubularised ileal bladder is simple to perform and constitutes a reasonable alternative to traditional tubular enterocystoplasties.(ABSTRACT TRUNCATED AT 250 WORDS)
Assuntos
Neoplasias da Bexiga Urinária/cirurgia , Derivação Urinária , Incontinência Urinária/cirurgia , Idoso , Humanos , Íleo/cirurgia , Masculino , Pessoa de Meia-Idade , ProstatectomiaRESUMO
89 patients with a superficial tumor of the bladder were treated with intravesical BCG: 150 mg of the Pasteur strain was instilled once a week for 6 weeks, once every other week for 3 months and once a month for 2 years, in 4 groups of patients. Group I: 20 patients with primary carcinoma in situ (CIS); 18 have been monitored for more than 6 months: in each, cytology has become negative; 16 were controlled by TUR: in all but one complete regression of CIS was observed. Group II: 24 patients with stage O tumor; in 16, follow up is greater than 12 months : the recurrence rate dropped from 11.12/100 months patients to 1.52/100 months patients. Group III: 12 patients with stage A tumor: in 10, follow up is greater than 12 months; 2 patients had tumor recurrence. Group IV: 28 patients with stage O or stage A tumor associated with CIS; in 17, followup is greater than 12 months: CIS disappeared in 13, but in 2 recurrences were observed (stage O without CIS). In addition to irritative side effects on the bladder, we observed complications in four cases: epididymitis in 2 patients and BCG spread with granulomatous hepatitis and bronchopulmonary lesions in two others.
Assuntos
Vacina BCG/uso terapêutico , Carcinoma in Situ/terapia , Neoplasias da Bexiga Urinária/terapia , Administração Tópica , Adulto , Idoso , Vacina BCG/administração & dosagem , Vacina BCG/efeitos adversos , Carcinoma in Situ/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Neoplasias Primárias Múltiplas , Neoplasias da Bexiga Urinária/patologia , Neoplasias da Bexiga Urinária/cirurgiaRESUMO
BACKGROUND: Multiple cytological patterns occur in bronchoalveolar lavage fluid (BALF) of horses with inflammatory airway disease (IAD). Only few data on BALF cytokine profiles are available for horses with IAD, and are limited to mRNA expression. HYPOTHESIS/OBJECTIVE: Cytological profiles of IAD are associated with different BALF immunological pathways. To investigate BALF cytokine concentrations in a large number of horses with neutrophilic IAD. ANIMALS: One hundred and thirty-eight client-owned Standardbred racehorses in active training. METHODS: Prospective observational study. BALF samples were obtained from left and right lungs. Interleukin (IL)-4, interferon (IFN)-γ, and tumor necrosis factor (TNF)-α concentrations were determined by ELISA. RESULTS: Fourteen horses had normal BALF cytological profiles and 56 exhibited evidence of bilateral neutrophilic IAD. Twenty-four horses showed BALF with, respectively, IAD- and CTL consistent cytology and were excluded; as were 44 horses because of evidence of pulmonary hemorrhage. TNF-α (56 ± 115 pg/mL; P = .034) and IFN-γ concentrations (104 ± 247 pg/mL; P = .044) were significantly higher for IAD horses, compared with controls (respectively 19 ± 41 and 80 ± 116 pg/mL). Horses with 'neutrophil' subtype had significantly higher IFN-γ concentrations (110 ± 154 pg/mL), than 'neutrophil/metachromatic' (56 ± 54 pg/mL; P = .028) and 'neutrophil/metachromatic/eosinophil' subtypes (44 ± 23 pg/mL; P = .012). CONCLUSIONS AND CLINICAL IMPORTANCE: Cytokine concentrations in BALF suggested that neutrophilic IAD is associated with activation of the innate immune system and a possible T-helper (Th)-1 polarized response. This study also suggested that immunological pathways vary according to cytological IAD subtypes.
Assuntos
Líquido da Lavagem Broncoalveolar/química , Citocinas/análise , Doenças dos Cavalos/imunologia , Inflamação/veterinária , Neutrófilos/fisiologia , Doenças Respiratórias/veterinária , Animais , Líquido da Lavagem Broncoalveolar/citologia , Feminino , Doenças dos Cavalos/fisiopatologia , Cavalos , Inflamação/imunologia , Inflamação/fisiopatologia , Interferon gama/análise , Interleucina-4/análise , Masculino , Neutrófilos/imunologia , Estudos Prospectivos , Doenças Respiratórias/imunologia , Doenças Respiratórias/fisiopatologia , Fator de Necrose Tumoral alfa/análiseRESUMO
REASONS FOR PERFORMING STUDY: The demands in the Standardbred trotters industry require young, still growing horses, to be trained well above light exercise level. During that period, the risk of occurrence of energy imbalance and maladaptation to training is high. In man, the lack of energy homeostasis is considered as the basic problem in the development of chronic fatigue. OBJECTIVE: To find objective biomarkers of early maladaptation to training in young racehorses under field conditions. MATERIALS AND METHODS: Sixty-five 2-year-old Standardbreds were followed during their first 3 months of training in 5 different training centres. Monthly measurement of morphological variables (weight, height at withers, body condition score, body composition), basic haemato-biochemical variables and endocrine levels (testosterone, cortisol, thyroid hormones, leptin, IGF1, prolactin) were undertaken. Feeding levels and training programmes were also evaluated. At the end of the 3 month period, on the basis of an abnormal weight loss, 14 young horses were suspected of maladaptation to training (MT group). Morphological, haemato-biochemical, endocrine changes were compared between MT group (n = 14) and control group (C group, n = 40). Analysis of variance was calculated to study the effects of time and maladaptation to training. RESULTS: Compared to C group, MT group showed a significant higher weight loss in relation to a higher loss of fat mass and body condition score (P < 0.05). MT group presented higher GGT and white cell counts and lower red cell counts (P < 0.05). Finally, MT group showed significant lower levels of T4 (P = 0.03) than C group. CONCLUSION: Some young horses presented signs of energy imbalance which were also associated with haematobiochemical and endocrine changes. Those markers might be useful for identification of maladaptation to training.
Assuntos
Adaptação Fisiológica/fisiologia , Composição Corporal/fisiologia , Cavalos/sangue , Cavalos/fisiologia , Condicionamento Físico Animal/fisiologia , Animais , Feminino , Masculino , EsportesRESUMO
REASONS FOR PERFORMING STUDY: Intense physical exercise produces an excess of reactive oxygen species which can disturb the antioxidant/oxidant balance of the horse in training. Several classes of antioxidant dietary compounds have been suggested to provide health benefits and there is evidence that consumption of these products leads to a reduction in the expression of various pro-inflammatory and/or oxidative stress biomarkers. The recent development of a new galenic system allows the oral delivery of the antioxidant enzyme: superoxide dismutase (SOD). This has been developed from a specific melon variety with a particularly high SOD activity. OBJECTIVES: To study the influence of an oral supplementation with an encapsulated melon rich in SOD on muscular and antioxidant balance variables in a population of Standardbreds in training. METHODS: Twenty-four Standardbreds in training were paired by age, sex and training level. They were randomly split into 2 groups: SOD group (520 iu/day) and placebo group. At the beginning of the study (T0) and after 30 days (T30) and 60 days (T60) of supplementation, physiological response during a standardised exercise test, plasma muscular enzymes at rest and post exercise (creatine kinase), oxidative stress markers (erythrocyte SOD) and blood resistance to haemolysis (KRL test) were assessed. Analysis of variance of time, treatment and interaction time x treatment was calculated. RESULTS: Between T0 and T60, in contrast with placebo group, a significant increase in the plasma resistance to haemolysis in the SOD group was observed and it was significantly higher (P < 0.05) in the SOD group than in the placebo group on T60. Between T0 and T60, resting CK remained constant in SOD group whereas a significant increase in plasma CK in the placebo group was observed. On T60, the CK level was significantly lower (P < 0.05) in SOD group than in the placebo group. CONCLUSIONS: These results suggest that oral SOD supplementation might increase blood resistance to haemolysis and reduce the increase in muscular membrane permeability induced by training.
Assuntos
Cavalos/fisiologia , Condicionamento Físico Animal/fisiologia , Superóxido Dismutase/farmacologia , Administração Oral , Animais , Composição Corporal/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos , Suplementos Nutricionais , Método Duplo-Cego , Eritrócitos/enzimologia , Feminino , Glutationa Peroxidase , Cavalos/sangue , Masculino , Superóxido Dismutase/administração & dosagemRESUMO
REASONS FOR PERFORMING STUDY: Dorsal displacement of the soft palate (DDSP) is one of the most common obstructive conditions of the upper respiratory tract in the racehorse. This condition has a complex aetiology which may be caused or exacerbated by pharyngeal inflammation. Additionally, lower respiratory airway diseases may be associated with DDSP thereby contributing to exercise intolerance in these horses. OBJECTIVE: The aim of this study was to measure physiological variables during a standardised exercise test and to assess the prevalence and consequences of lower respiratory airway disease in horses with DDSP. METHODS: A total of 46 horses were included in this study: 22 in the control and 24 in the DDSP groups. All horses performed a SET with measurement of heart rate (HR) and blood lactate concentration. One hour post exercise, respiratory samples were collected for cytological and bacteriological analysis. RESULTS: During exercise, the DDSP group had higher blood lactate concentration than the control group. According to BAL results, 50 and 63% of control and DDSP group horses, respectively, had evidence of inflammatory airway disease (IAD). In the DDSP group, 42% of horses had a syndrome of tracheal inflammation (STI) with 71% of this group having bacteria isolated at >10(5) CFU/ml. CONCLUSIONS: Horses with DDSP showed evidence of a high prevalence of IAD and STI with an associated positive bacteriology in 55% of the cases. Even if DDSP is treated by surgery, the authors' recommendation would be to investigate the possibility of lower respiratory airway problems which may also be impacting the horse's performance and/or surgery efficiency.
Assuntos
Obstrução das Vias Respiratórias/veterinária , Doenças dos Cavalos/etiologia , Pneumopatias/veterinária , Palato Mole/patologia , Traqueíte/veterinária , Obstrução das Vias Respiratórias/complicações , Obstrução das Vias Respiratórias/patologia , Animais , Teste de Esforço/veterinária , Feminino , Hemorragia/etiologia , Hemorragia/veterinária , Cavalos , Pneumopatias/etiologia , Masculino , Condicionamento Físico Animal/efeitos adversos , Traqueíte/etiologiaAssuntos
Técnicas Citológicas/veterinária , Hemorragia/veterinária , Doenças dos Cavalos/diagnóstico , Pneumopatias/veterinária , Coloração e Rotulagem/veterinária , Animais , Técnicas Citológicas/métodos , Amarelo de Eosina-(YS) , Ferrocianetos , Hemorragia/diagnóstico , Cavalos , Pneumopatias/diagnóstico , Azul de Metileno , Condicionamento Físico Animal/efeitos adversos , Sensibilidade e Especificidade , Esportes , Coloração e Rotulagem/métodosRESUMO
REASONS FOR PERFORMING STUDY: Body composition is an essential factor in athletic performance of human sprinters and long distance runners. However, in horses, many questions remain concerning relationships between body composition and performance in the different equine activities. OBJECTIVES: To determine relationships between body composition, body score, physiological and locomotor variables in a population of young Standardbreds in training. METHODS: Twenty-four 2-year-old Standardbreds were studied, body condition on a scale 0-5 and bodyweight recorded, and height at withers measured. Percentage of fat (%F), fat mass (FM) and fat free mass (FFM) were estimated echographically. During a standardised exercise test on the track, velocity, heart rate, respiratory frequency and blood lactate concentrations were measured. V4 and V200 (velocity for a blood lactate concentration of 4 mmol/l and velocity of 200 beats/min) calculated. Basic gait variables were measured at 3 different speeds with an accelerometric device. RESULTS: Body composition variables: %F and FM were significantly related to body condition score and physiological variables. Body score was highly correlated to %F (r = 0.64) and FM (r = 0.71). V4 was negatively correlated to %F (r = -0.59) and FM (r = -0.60), P<0.05. V200 was also negatively related to %F and FM, (r = -0.39 and r = -0.37, respectively, P<0.1). No relationships were found between body composition and gait characteristics. CONCLUSIONS: Body composition was closely related to indirect measurements of aerobic capacity, which is a major factor of athletic performance in middle distance running horses. POTENTIAL RELEVANCE: As in human athletes, trainers should take special note to evaluate optimal bodyweight and body composition of race horses to optimise performance.
Assuntos
Composição Corporal/fisiologia , Constituição Corporal/fisiologia , Frequência Cardíaca/fisiologia , Cavalos/fisiologia , Condicionamento Físico Animal/fisiologia , Tecido Adiposo/metabolismo , Animais , Peso Corporal/fisiologia , Teste de Esforço/veterinária , Feminino , Marcha/fisiologia , Lactatos/sangue , Masculino , Músculo Esquelético/metabolismoRESUMO
REASONS FOR PERFORMING STUDY: A close relationship between limb and respiratory rhythms has been shown in clinically healthy galloping horses due to mechanical constraints in the thoracic region. This synchronisation leads to a 1/1 ratio between stride frequency (SF) and respiratory frequency (RF) during galloping. Very little is known about locomotor-respiratory coupling (LRC) during fast trot. OBJECTIVES: To investigate stride and respiratory rates during a standardised exercise test on the track in Standardbred Trotters. METHODS: Forty-four French trotters age 2-10 years performed a standardised exercise test consisting of three 3 min steps at constant speeds. Speed (V) of exercise varied between 500 and 750 m/min. Variables measured during exercise: SF, heart rate, RF using a microphone between the nostrils, blood lactate concentration. Physiological variables V4 and V200 were calculated and race performance index recorded. RESULTS: There was no age-related difference in RF or in LRC. Two LRC strategies were found: around 1/1 ratio and 3/2 ratio between SF and RF, respectively. A relationship between SF/RF ratio and physiological parameters showed a higher LRC in good performers because of a lower RF during submaximal and maximal exercise. CONCLUSION: RF is significantly lower and LRC significantly higher in good compared to poor performers. POTENTIAL RELEVANCE: Investigation is required to ensure that the breathing techniques of trotters may be used in the selection process of racehorses.
Assuntos
Cavalos/fisiologia , Locomoção/fisiologia , Condicionamento Físico Animal/fisiologia , Respiração , Fatores Etários , Animais , Fenômenos Biomecânicos , Estudos Transversais , Teste de Esforço/veterinária , Frequência Cardíaca/fisiologia , Lactatos/sangue , Mecânica Respiratória/fisiologiaRESUMO
REASONS FOR PERFORMING STUDY: A retrospective study concerning spontaneous active recovery intensity, i.e. at a freely chosen speed, after a submaximal exercise in trotters showed that the mean intensity demanded by trainers corresponds to 40-50% of maximal heart rate (max HR; unpublished data). However, in human athletes, optimal active recovery intensity was found to be about 60-70% of max HR. Is the spontaneous recovery optimal after a submaximal exercise in trotters? OBJECTIVES: To compare different recovery intensities and define the most efficient one. METHODS: Thirty-seven trotters performed a standardised exercise test on the track. Horses were randomly divided into 4 groups of recovery: passive recovery (n = 10), 10 min walk recovery (n = 10, 100 m/min), 10 min slow trot recovery (n = 9, 250 m/min) and 10 min fast trot recovery (n = 8, 420 m/min). Before, during and 1 h after exercise, speed, heart rate, blood lactate concentration were measured as well as respiratory frequency and rectal temperature. Creatine kinase (CK) was measured 1, 3 and 5 h after exercise. RESULTS: Walk, slow trot and fast trot recovery corresponded respectively to 45-50%, 55-60% and 65-70% of max HR. Heart rate and blood lactate concentration were significantly lower after the 10 sec recovery with increasing intensity of recovery. CONCLUSION: The most efficient intensity of recovery was the 10 min fast trot recovery (65-70% max HR) as this type of recovery allows the optimal blood lactate disappearance. POTENTIAL RELEVANCE: Considering the usual habits of trainers or drivers, recovery intensity after trot races should be increased in intensity to optimise its efficiency.
Assuntos
Frequência Cardíaca/fisiologia , Cavalos/fisiologia , Lactatos/sangue , Condicionamento Físico Animal/métodos , Condicionamento Físico Animal/fisiologia , Animais , Creatina Quinase/metabolismo , Teste de Esforço/veterinária , Corrida/fisiologia , Fatores de TempoRESUMO
REASONS FOR PERFORMING STUDY: It has become apparent through analysis of elite races over the past 20 years that mounted races are always slower than harnessed races when performed by the same horses over the same distances on the same tracks. OBJECTIVES: To investigate and compare physiological and gait variables in mounted and harnessed activities in trotters. METHODS: Ten trotters were taken at random in 2 standardised field exercise tests one week apart: a harnessed and a mounted test with standardised weight jockeys and drivers. Speed, heart rate (HR), respiratory frequency (RF), blood lactate concentration (La), stride characteristics (length, frequency [SF], symmetry, regularity, dorsoventral displacement of the sternum and vertical, longitudinal and lateral activities measuring the amount of deceleration and acceleration along the 3 axis) were measured. RESULTS: Paired t tests and an analysis of variance were calculated between the 2 conditions and revealed that V4 (speed for a La of 4 mmol/I), V200 (speed for a HR of 200 beats/min), stride length, trot symmetry, lateral activity were lower in the mounted condition. In contrast, RF, SF, dorsoventral displacement, vertical and longitudinal activities were significantly higher in mounted horses compared to harnessed horses. CONCLUSION: The significant physiological and biomechanical differences between pulling whilst harnessed and being ridden reflect an increase in the energy requirement of locomotion in the mounted condition compared to the harnessed condition. Trotting mounted at maximal speed is more demanding for the horse than harnessed as reflected by the lower V4 and V200 and some gait variables change in relation to this phenomenon. POTENTIAL RELEVANCE: This study demonstrates that trotting mounted at sub-maximum and maximum speed is more demanding for the horse when ridden and that it modifies some gait variables, either as a result or even as a possible cause.
Assuntos
Marcha/fisiologia , Cavalos/fisiologia , Condicionamento Físico Animal/métodos , Condicionamento Físico Animal/fisiologia , Corrida/fisiologia , Suporte de Carga/fisiologia , Animais , Fenômenos Biomecânicos , Estudos Cross-Over , Metabolismo Energético/fisiologia , Teste de Esforço/veterinária , Feminino , Frequência Cardíaca/fisiologia , Humanos , Masculino , Consumo de Oxigênio/fisiologia , EsportesRESUMO
REASON FOR PERFORMING STUDY: Developmental orthopaedic lesions are commonly found in French Standardbred horses. One of the main questions asked by trainers, owners and veterinarians is what impact these lesions have on the racing career and racing performances of horses. OBJECTIVES: To study the prevalence and distribution of developmental orthopaedic lesions in young French Standardbred trotters and to relate them to racing performance. METHODS: Feet, fetlock, tarsus and stifle regions were radiographed in 865 two-year-old French Standardbred trotters. Abnormal radiographic findings (ARF) were evaluated for 12 anatomical sites identified in these areas, and a severity index given. Performance criteria were: success in qualification for racing, maximal and mean index of trot (ITR), an annual index calculated on the basis of the logarithm of earnings per starts, total earnings at 5 years, placed races compared to starts and longevity of the racing career. Analysis of variance were calculated to study the relationships between racing performance and the number of ARF or the severity index. RESULTS: A total of 363 horses (42.0%) showed ARF. Prevalence of ARF was 18.3% in the plantar aspect of the hind fetlock and 10.6% in the proximal tarsus. Among the total population, 833 horses were considered for performance evaluation, 478 of them were qualified for racing. The number of ARF significantly affected racing longevity. However, the number of ARF did not affect performance categories according to maximal ITR. Concerning distribution of ARF, the number of plantar lesions in the fetlock significantly affected mean ITR. The index of severity did not provide more information for prognosis than the number of ARF. CONCLUSION: Longevity is the only criteria affected by ARF. When evaluating different sites, only the plantar fetlock region showed a significant relationship with mean ITR. POTENTIAL RELEVANCE: Number of ARF and radiographic score (RS) affect mean ITR and longevity but do not affect maximal ITR. A horse with a good racing ability will be a good performer but might have a racing career shortened because of orthopaedic problems in relation to developmental orthopaedic lesions.
Assuntos
Osso e Ossos/anormalidades , Osso e Ossos/diagnóstico por imagem , Cavalos/fisiologia , Condicionamento Físico Animal/fisiologia , Corrida/fisiologia , Análise de Variância , Animais , Artrografia/métodos , Artrografia/veterinária , Carpo Animal/anormalidades , Carpo Animal/diagnóstico por imagem , Feminino , Cavalos/anormalidades , Articulações/anormalidades , Longevidade , Masculino , Prevalência , EsportesRESUMO
The aim of this study was to describe the correlation between the phases of the limb cycle of trotters on the track and specific points on the acceleration curves obtained from a new gait analysis system. We compared kinematic data obtained by video image analysis and 3-dimensional acceleration recordings made on 3 French trotters in training. They trotted on a race track at speeds of 8.33, 10 and 11.66 m/s, with a final stretch at maximum speed. Their locomotion was recorded with a synchronised video camera at a frame frequency of 200 Hz and with the Equimétrix gait analysis system. The gait variables were calculated using 3-dimension acceleration data recorded at the sternum (dorso-ventral, longitudinal and lateral axes) at a sampling rate of 100 Hz. Three phases of the stride were clearly identified on the dorsoventral acceleration signal: hoof-landing, midstance phase and toe-off. Braking and propulsion phases were identified on the corresponding longitudinal acceleration signal. The weight-bearing diagonal was identified by observing the lateral signal. The stride temporal variables (stride, stance, braking and propulsion durations for both diagonals), measured by video analysis and by acceleration signal analysis, were not significantly different (P>0.05). The identification of specific points on the acceleration pattern allowed an accurate temporal analysis of the stride. Potential applications could be the determination of locomotor factors related to racing performance or assessment of locomotor disorders at high speed.
Assuntos
Marcha/fisiologia , Cavalos/fisiologia , Locomoção/fisiologia , Aceleração , Animais , Membro Anterior , Membro Posterior , Movimento , Postura/fisiologia , Fatores de Tempo , Gravação em VídeoRESUMO
Salvage cystectomy, after failed radical radiotherapy for infiltrating bladder cancer, is a major procedure in which rectal laceration can lead to life-threatening complications. The advantages of a combined abdominoperineal approach are emphasized in a series of 14 patients.
Assuntos
Neoplasias da Bexiga Urinária/cirurgia , Adulto , Idoso , Humanos , Masculino , Métodos , Pessoa de Meia-Idade , Bexiga Urinária/cirurgiaRESUMO
Among 169 patients treated for supeficial bladder tumor with 150 mg Pasteur-strain bacillus Calmette-Guérin (BCG) intravesical instillation, 5 cases of 'BCGitis' were observed, i.e. a severe systemic BCG infection with bronchopulmonary lesions and granulomatous hepatitis. In 4 cases, the complications appeared at the early stage of treatment (after the 3rd, 6th, 6th and 8th instillations, respectively). In 1 case, treated with monthly maintenance therapy for 2 years, BCGitis appeared 6 months after treatment had been completed and, in addition to pulmonary basal infiltrate and granulomatous hepatitis, intramedullary granulomatosis was observed. In 3 patients, trauma must be taken into consideration as BCGitis appeared after traumatic instillation with bleeding. All patients were cured by treatment with rifampicin, isoniazid and prednisone.