References of "Amory, Hélène"
     in
Bookmark and Share    
See detailMaximal diaphragmatic strength measurement in healthy unsedated calves
Desmecht, Daniel ULg; Rollin, Frédéric ULg; Amory, Hélène ULg et al

in Archives Internationales de Physiologie et de Biochimie (1989)

Detailed reference viewed: 2 (0 ULg)
See detailThe effect of airway occlusion and lobeline-induced hyperventilation on diaphragmatic strength in ponies
Desmecht, Daniel ULg; Art, Tatiana ULg; Rollin, Frédéric ULg et al

in Archives Internationales de Physiologie et de Biochimie (1989)

Detailed reference viewed: 7 (0 ULg)
See detailInertial pressures in exercising ponies
Art, Tatiana ULg; Lekeux, Pierre ULg; Gustin, Pascal ULg et al

in Archives Internationales de Physiologie et de Biochimie (1989)

Detailed reference viewed: 3 (0 ULg)
See detailEffects of intrapleural pressure changes on pulmonary haemodynamics measurements in unsedated cattle
Amory, Hélène ULg; Rollin, Frédéric ULg; Art, Tatiana ULg et al

in Archives Internationales de Physiologie et de Biochimie (1989)

Detailed reference viewed: 2 (0 ULg)
Peer Reviewed
See detailEffect of acute hypoxia on the pulmonary haemodynamics in two different breeds of cattle
Amory, Hélène ULg; Rollin, Frédéric ULg; Art, Tatiana ULg et al

in Archives Internationales de Physiologie et de Biochimie (1989)

Detailed reference viewed: 2 (0 ULg)
Full Text
Peer Reviewed
See detailInertance of the Respiratory System in Ponies
Art, Tatiana ULg; Lekeux, Pierre ULg; Gustin, Pascal ULg et al

in Journal of Applied Physiology (Bethesda, Md. : 1985) (1989), 67(2), 534-540

The purpose of the present work was to measure the pulmonary inertance (IL) in ponies and to analyze its potential influence on the mechanics of breathing and on their aptitude to increase ventilation ... [more ▼]

The purpose of the present work was to measure the pulmonary inertance (IL) in ponies and to analyze its potential influence on the mechanics of breathing and on their aptitude to increase ventilation during exercise. Five healthy ponies 2.4-4 yr old [mean wt 255 +/- 15 (SE) kg] were used. On the one hand, inertance of the respiratory system (Irs) was computed from the value of the resonant frequency (fr) measured by the forced oscillation technique. On the other hand, respiratory airflow, tidal volume (VT), and transpulmonary pressure (PL) changes were recorded while the ponies were performing a light treadmill exercise, and IL was calculated as the ratio of the associated differences in inertial pressure (delta Pin) to volume acceleration (delta V). Respiratory airflow and VT were measured with a Fleisch pneumotachograph (no. 5) and PL with an intraesophageal balloon catheter. First, the protocol was carried out with the ponies breathing air and He-O2, second, while the ponies breathed through two additional tubes (100 cm long, 3 cm ID), then one, and finally none, fixed on the Fleisch pneumotachograph. Finally, the contribution of the extra- vs. the intrathoracic airways to IL was estimated by measuring the lateral midtracheal pressure recorded simultaneously with the aforementioned parameters. The values of Irs calculated with fr and of IL calculated on the basis of the delta Pin-delta V ratio were 29.8 +/- 0.4 and 19.8 +/- 1.0.10(-4) kPa.l-1.s-2, respectively. During He-O2 breathing IL decreased about three times; this result was similar to the predicted decrease based on gas density only.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

Detailed reference viewed: 40 (14 ULg)
Full Text
Peer Reviewed
See detailTechniques d'investigation de la fonction cardiaque chez les animaux domestiques
Amory, Hélène ULg; Art, Tatiana ULg; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1988), 132

Une revue des techniques d'investigation du coeur a été réalisée d'un point de vue morphologique, électrique, fonctionnel et métabolique. Un accent particulier a été posé sur celles de ces techniques qui ... [more ▼]

Une revue des techniques d'investigation du coeur a été réalisée d'un point de vue morphologique, électrique, fonctionnel et métabolique. Un accent particulier a été posé sur celles de ces techniques qui ont connu, au cours des dernières années, une expansion importante en médecine vétérinaire [less ▲]

Detailed reference viewed: 56 (5 ULg)
Peer Reviewed
See detailCould pulmonary inertance be a limiting factor of ventilation during exercise in the equine species ?
Art, Tatiana ULg; Lekeux, Pierre ULg; Gustin, Pascal ULg et al

in Proceedings of the 7th Comparative Respiratory Society Meeting (1988)

Detailed reference viewed: 8 (0 ULg)
Peer Reviewed
See detailAssessment of respiratory muscle performance in non cooperative subjects : a preliminary study
Desmecht, Daniel ULg; Art, Tatiana ULg; Amory, Hélène ULg et al

in Proceedings of the 7th Comparative Respiratory Society Meeting (1988)

Detailed reference viewed: 5 (0 ULg)
Peer Reviewed
See detailInfluence of the intrapleural pressure on the variability of the pulmonary arterial pressures measurements in calves
Amory, Hélène ULg; Art, Tatiana ULg; Gustin, Pascal ULg et al

in Proceedings of 7th comparative Respiratory Society Meeting, Chicago (USA) (1988)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailEffects de l'entraînement sur la fonction cardio-respiratoire et sur la température rectale chez le poney
Amory, Hélène ULg; Art, Tatiana ULg; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1988), 132

The influence of training on cardiorespiratory and thermoregulatory adaptations to exercise was studied in 2 healthy race ponies (age : 3.5 and 5 years; weight : 270 and 295 kg). Respiratory airflow (V ... [more ▼]

The influence of training on cardiorespiratory and thermoregulatory adaptations to exercise was studied in 2 healthy race ponies (age : 3.5 and 5 years; weight : 270 and 295 kg). Respiratory airflow (V), tidal volume (VT), electrocardiogram and rectal temperature were simultaneously recorded before, during and alter a standardized exercise which consisted of 3 min walking (1.5 m.sec -1), 3 min slow trotting (3.0 m.sec-1) and 3 min fast trotting (3.5 m.sec-1). These parameters were recorded 4 times, i.e. before (test 1), during (test 2 and 3) and 2 weeks alter (test 4) a 4 week-period of training. Respiratory frequency (f), VT, peak inspiratory and expiratory V, minute volume (Ve), heart rate (H.R.) and rectal temperature changes were calculated on the basis of the collected data. For a given workload, Ve was increased and H.R. decreased during test 2 and 3. These adaptations to training persisted alter the 2 week-period of detraining. Neither Ve nor H.R. recoveries were changed during the whole experimental period. On the other hand, f measured both during exercise and recovery was subject to great variations, obviously independent of the state of training. Lastly, the exercise-induced hyperthermia was reduced alter the training period. This thermoregulatory changes was reversed alter detraining. The results of this preliminary study must be taken with cautions because of the small number of animals used. Nevertheless, they suggested that (1) f is a poor indication of the ventilation, (2) measurements of Ve and HR during a standardized exercise may give a good estimation of the fitness of a horse, (3) on the opposite both parameters measured during recovery seemed to be poorly correlated with the state of training. [less ▲]

Detailed reference viewed: 174 (3 ULg)
Full Text
Peer Reviewed
See detailThe effect of common bovine respiratory diseases on tidal breathing flow-volume loops
Lekeux, Pierre ULg; Art, Tatiana ULg; Amory, Hélène ULg

in Veterinary Research Communications (1988), 12(6), 463-473

In order to better understand the bovine breathing pattern, tidal breathing flow-volume loops (TBFVL) were analyzed in 24 healthy cattle of different body weights (range: 37-660 kg) (Group A) and in 28 ... [more ▼]

In order to better understand the bovine breathing pattern, tidal breathing flow-volume loops (TBFVL) were analyzed in 24 healthy cattle of different body weights (range: 37-660 kg) (Group A) and in 28 cattle suffering from the common respiratory diseases: verminous bronchitis (Group B); shipping fever (Group C); acute respiratory distress syndrome (Group D); respiratory syncytial virus pneumonia (Group E); organophosphate poisoning (Group F); and necrotic laryngitis (Group G). Respiratory airflow and tidal volume were measured with a breathing mask-Fleisch pneumotachograph assembly. TBFVL were traced from these values using a computerized method. All the loop indices proposed by Amis and Kurpershoek (1986a) were calculated from 5 representative breathing cycles for each of the 52 animals. The TBFVL shapes and indices were relatively constant in most healthy cattle and were not correlated with the body size. When compared to normal values, animals with moderate respiratory syndromes (Groups B and C) had a more flattened shape to their TBFVL. On the other hand, in most cattle with severe respiratory pathologies (Groups D, F and G expiration tended to be biphasic with the peak expiratory flow (PEF) occurring significantly later than in healthy animals. Both PEF and peak inspiratory flow were increased in all the pathological conditions. The TBFVL indices were more frequently and more severely changed during expiration than during inspiration. [less ▲]

Detailed reference viewed: 25 (6 ULg)
Full Text
Peer Reviewed
See detailL'endotoxémie dans l'espèce équine. 2ème partie: tableau clinique et éléments de pronostic.
Amory, Hélène ULg

in Pratique Vétérinaire Equine (1987), 29

Detailed reference viewed: 10 (0 ULg)