References of "Amory, Hélène"
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See detailCas de pneumonie interstitielle référés à l’université de Liège
Borde, Laura ULg; Araújo Pequito, Manuel; Molitor, Céline et al

in Pratique Vétérinaire Equine (2011), 43(171), 1-10

La pneumonie interstitielle est une maladie rare chez le cheval adulte. Une étude rétrospective propose de revenir sur 9 cas référés entre 1998 et 2009.

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See detailPropédeutique dans l’espèce équine.
Amory, Hélène ULg

Learning material (2011)

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See detailEchocardiographic assessment of left ventricular systolic function in colic horses
Borde, Laura ULg; Amory, Hélène ULg; Leroux, Aurélia ULg et al

in Journal of Equine Veterinary Science (2011), 31(8), 481-487

Background: Echocardiography has not been reported to study hemodynamic disturbances in colic horses. Objectives: To non invasively assess the impact of colic-related endotoxin shock on equine cardiac ... [more ▼]

Background: Echocardiography has not been reported to study hemodynamic disturbances in colic horses. Objectives: To non invasively assess the impact of colic-related endotoxin shock on equine cardiac function. Animals: Fifty horses admitted in clinic on emergency for colic. Methods: A shock score from 1 to 4 was established for each horse based on clinical evaluation, non invasive systolic blood pressure and blood tests measurements. Left ventricular echocardiographic and Doppler parameters were compared between the 4 groups according to the shock score (1 = no or discrete signs of shock, n=11; 2 = mild shock, n=17; 3 = moderate shock, n=12; 4 = severe shock, n=10) using a multivariable analysis. Horses with a score shock of 1 were considered as control. Significance was set at P < 0.05. Results: The stroke volume, stroke index, ejection time, ejection time index corrected for heart rate, aortic velocity time integral, aortic flow acceleration time and aortic flow deceleration time were significantly lower whereas acceleration rate of aortic flow ejection and heart rate were significantly higher in shocked horses than in controls. Cardiac output was not significantly different between groups. Conclusions and Clinical importance: Even if those results are difficult to interpret because of the shock-induced changes in loading conditions of the heart, they suggest that alterations in some indicators of systolic function can be quantified by Doppler echocardiography in horses with colic-induced endotoxemic shock. Ultrasonographic monitoring of cardiovascular function could thus be of interest in equine intensive care. [less ▲]

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See detailMyocardial depression as a component of endotoxic shock in horses: preliminary results of an echocardiographic study
Borde, Laura ULg; Amory, Hélène ULg; Leroux, Aurélia ULg et al

Conference (2010, October 16)

Cardiovascular consequences of septic shock are well described in humans but these hemodynamic disturbances have not yet been studied in endotoxic horses. The endotoxins act directly and indirectly to ... [more ▼]

Cardiovascular consequences of septic shock are well described in humans but these hemodynamic disturbances have not yet been studied in endotoxic horses. The endotoxins act directly and indirectly to cause a myocardial depression associated with a systemic hypotension responsible for a fall of both the cardiac output and the systemic vascular resistance in end-stage endotoxic shock. The hypothesis was that myocardial depression was a component of endotoxic shock in horses. In this way, fifty horses admitted in clinic with signs of endotoxic shock and 17 healthy control horses were submitted to a doppler echocardiographic exam to assess the impact of endotoxic shock on equine cardiac function. A shock score from 1 to 4, based on clinical evaluation, non invasive systolic blood pressure, and blood tests was attributed to each endotoxic horse. Echocardiographic and Doppler parameters were compared between the 5 groups using a multivariable ANOVA analysis. Score 1, 2, 3 and 4 groups included 11, 17, 12 and 10 horses, respectively. Some markers of systolic function included the ejection time (ET), ET corrected for HR and mean velocity of circumferential fibre shortening corrected for HR, the aortic velocity time integral and deceleration time, and the stroke volume were significantly lower, whereas the HR and the peak velocity of the late diastolic filling of the mitral Doppler flow and its velocity time integral were significantly higher in endotoxemic horses than in controls. Thanks to an increase in HR, the cardiac output was not significantly different between groups. Even if the tachycardia, the fall in preload and a probable decrease in afterload doubtless influence the observed changes, the results of this study suggest that a myocardial depression with both an impaired systolic and diastolic left ventricular function could be a component of endotoxic shock in horses. [less ▲]

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See detailProspective study of hemodynamic disorders mesured by echocardiography and associated with endotoxemia in horses
Borde, Laura ULg; Amory, Hélène ULg; Leroux, Aurélia ULg et al

Conference (2010, September 11)

Endotoxemia is the first mortality cause in intensive care horses. In human, hemodynamic disturbances have been showed to be associated with septic shock whereas in horses, this facet of endotoxemia has ... [more ▼]

Endotoxemia is the first mortality cause in intensive care horses. In human, hemodynamic disturbances have been showed to be associated with septic shock whereas in horses, this facet of endotoxemia has not yet been studied. The aim of the study was to assess the impact of endotoxin shock on equine cardiac function. Fifty horses admitted in clinic with signs of endotoxic shock and 17 healthy control horses were submitted to a doppler echocardiographic exam. The endotoxemic horses were classified in 4 groups according to their shock score based on clinical evaluation (heart rate (HR) and respiratory rate), non invasive systolic blood pressure, and blood tests (Packed cell volume and lactates). Score 1, 2, 3 and 4 groups included 11, 17, 12 and 10 horses, respectively. Left ventricular (LV) echocardiographic and Doppler parameters were compared between the 5 groups using a multivariable ANOVA analysis. The LV internal diameter, ejection time, ejection time corrected for HR and mean velocity of circumferential fiber shortening corrected for HR, the aortic velocity time integral and deceleration time, and the stroke volume were significantly lower, whereas the HR and the peak velocity of the late diastolic filling of the mitral Doppler flow and its velocity time integral were significantly higher in grade 2 to 4 endotoxemic horses than in control horses. Because of the tachycardia compensating the lower stroke volume in endotoxemic horses, the cardiac output was not significantly different between groups. Despite the fact that the increase in HR, the fall in preload and a probable decrease in afterload doubtless played a role in the observed changes, the results of this study suggest an impaired systolic and diastolic LV function in horses with moderate to severe endotoxemia. Doppler echocardiographic monitoring of the cardiovascular function could thus be of interest in equine intensive care. [less ▲]

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See detailTroubles hépatiques
Amory, Hélène ULg

in Courouce-Malblanc, A.; Desbrosse, F. (Eds.) Maladies des chevaux (2010)

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See detailGrass sickness disease
Amory, Hélène ULg

in Courouce-Malblanc, A.; Desbrosse (Eds.) Maladies des chevaux (2010)

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See detailLes maladies cardiovasculaires et du sang.
Amory, Hélène ULg

in Courouce-Malblanc, A.; Desbrosse, F. (Eds.) Maladies des chevaux (2010)

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See detailAltered systolic left ventricular function in horses completing a long distance endurance race
Amory, Hélène ULg; Votion, Dominique ULg; Fraipont, A. et al

in Equine Veterinary Journal. Supplement (2010), 42(38), 216-219

Reasons for performing the study: It is unknown whether exercise-induced cardiac fatigue (EICF), as demonstrated in athletes performing long duration exercise, occurs in endurance horses. Objective: To ... [more ▼]

Reasons for performing the study: It is unknown whether exercise-induced cardiac fatigue (EICF), as demonstrated in athletes performing long duration exercise, occurs in endurance horses. Objective: To examine the effects of a long distance endurance race on left ventricular systolic function in horses. Methods: Echocardiography was performed before and after a 2 or 3 star international endurance race (106 to 132 km) in 11 horses. Systolic (s) and diastolic (d) interventricular and left ventricular free wall thickness (IVS and LVFW, respectively), left ventricular, left atrial and aortic internal diameter (LVID, LA and Ao, respectively), fractional shortening (FS) and ejection fraction (EF) were measured by echocardiography. Heart rate (HR), peak flow velocity (Vmax), flow velocity integral (FVI), ejection time (ET), pre-ejection period (PEP), velocity of circumferential fiber shortening (Vcf), stroke volume (SV) and cardiac output (CO) were measured from aortic Doppler wave recordings. Results: After the race, LVIDd, Ao, LA, EF, FS, FVI, SV, ET and ET indexed for HR were significantly lower and IVSd, LVFWd, HR, PEP, PEP/ET, and Vcf were significantly higher as compared with pre-race values. Pre- to post-exercise changes in those parameters were not significantly correlated with changes in HR or in LVIDd. Conclusions: Results suggest that EICF, with a decrease in left ventricular systolic function, could occur post-exercise in horses performing long duration endurance races. However, a confounding effect of altered preload and heart rate on the studied variables cannot be discounted. [less ▲]

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See detailComparison of the Repeatability of Echocardiographic Measurements from Different Modes and Views in Horses of Various Breeds and Sizes
Al Haidar, Ali; Farnir, Frédéric ULg; Deleuze, Stefan ULg et al

in Journal of Equine Veterinary Science (2010), 30(6), 287-297

The objective of this study was to compare the repeatability of echocardiographic measurements obtained from different echocardiographic modes and views in healthy adult equids of various sizes, breeds ... [more ▼]

The objective of this study was to compare the repeatability of echocardiographic measurements obtained from different echocardiographic modes and views in healthy adult equids of various sizes, breeds and thorax shapes. Ten, free of cardiac disease, equids (body weight: 120 to 662 kg; age: 1 to 26 years) from various breeds were used in this study. Each animal was submitted to a standardized echocardiographic and Doppler protocol 3 times at 1 day interval. This protocol included the measurements of left and right ventricular, aortic, pulmonary, and left atrial parameters obtained from different views using the bidimensional (2D) or the motion (M) modes, and the measurement of several parameters of blood flow obtained from the pulsed wave Doppler mode. Repeatability of each measurement was estimated on the basis of the residual variance using a linear model and the coefficient of variation of repeated measurements. A two by two comparison of the repeatability of measurements performed in different views was performed using the residual variances in a variance ratio F test. Results showed that repeatability of echocardiographic or Doppler measurements in equids of various sizes, breeds and thorax shapes are comparable to previously reported results in thoroughbred and standardbred horses. Left ventricular morphologic parameters showed a good repeatability in the classic M-mode right parasternal short axis (Sax) view at the level of the chordae tendinae, but the 2D-mode right parasternal long axis (LAx) four- chambers view appeared to offer an interesting alternative to measure them. This latter view also allowed obtaining the mostre repeatable measurement of right ventricular internal diameter. The left atrial diameter was maximal and most repeatable in the 2D-mode left parasternal long axisLAx four- chambers angled view, and the repeatability of the aortic diameter was best in the 2D-mode right parasternal long axisLAx five-chambers view. Finally, aortic systolic time intervals were more repeatable when measured from the Doppler mode as compared to the M-mode. ThusIn conclusion, best repeatability of echocardiographic measurements in horses could be optimized following an echocardiographicthe following protocol in equids: 1-M-mode right parasternal short axis view at the level of chordae tendinae, to measure left ventricular morphologic parameters, and 2D-mode right parasternal long axis four-chamber as an alternative view. 2-2D-mode right parasternal long axis five-chambersre, to measure the aortic diameter. 3-2D-mode left parasternal long axis four-chambersre angled view, to measure the left atrial diameter. [less ▲]

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See detailCardiologie des équidés
Amory, Hélène ULg; Sandersen, Charlotte ULg

Learning material (2010)

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See detailAltered diastolic and systolic left ventricular function in horses completing a long distance endurance race
Amory, Hélène ULg; Votion, Dominique ULg; Fraipont, Audrey ULg et al

in In Proceedings of the 8th International Conference on Equine Exercise Physiology (ICEEP) (2010)

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See detailDescriptive study of 32 cases of doxycycline-overdosed calves.
Brihoum, Mounir ULg; Amory, Hélène ULg; Desmecht, Daniel ULg et al

in Journal of Veterinary Internal Medicine (2010), 24(5), 1203-10

BACKGROUND: Reports of doxycycline-induced toxicity are limited despite common use of this antibiotic to treat infectious respiratory disorders in calves. OBJECTIVE: To describe previously unreported ... [more ▼]

BACKGROUND: Reports of doxycycline-induced toxicity are limited despite common use of this antibiotic to treat infectious respiratory disorders in calves. OBJECTIVE: To describe previously unreported kidney lesions and diagnostic test results in doxycycline-overdosed calves and to compare these results with other findings reported previously. ANIMALS: Thirty-two calves that presented with adverse effects after receiving high doses of doxycycline as a treatment for mild respiratory disorders. METHOD: Retrospective review of medical records. RESULTS: Clinical examination identified mainly lethargy, dyspnea, cough, tongue paresia or paralysis associated with dysphagia and sialorrhea, tachycardia, tachypnea, and signs of myopathy. Blood analysis indicated increases in creatine kinase, lactate dehydrogenase, aspartate aminotransferase, and sorbitol dehydrogenase activities and increased serum creatinine and urea concentrations. ECG recordings and Doppler echocardiography examination identified ventricular premature beats and a decrease in left ventricular global and systolic function, respectively. Necropsy and histopathology disclosed necrosis of the myocardium, tongue, and some striated muscles, acute renal tubular necrosis, and fatty degeneration or congestion of the liver. CONCLUSIONS: Most of these findings corroborate previous observations made in doxycycline-overdosed calves, and further suggest myocardial and striated muscular toxicity as well as renal toxicity in doxycycline-overdosed calves. [less ▲]

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See detailEchography in the equine athlete
Amory, Hélène ULg

in Cardio & Sport 2010 (2010), 24

L’ultrasonographie est la technique d’investigation cardiaque la plus utilisée chez le cheval. Elle a permis de mettre en évidence les effets de l’entraînement et d’un effort de courte ou de longue durée ... [more ▼]

L’ultrasonographie est la technique d’investigation cardiaque la plus utilisée chez le cheval. Elle a permis de mettre en évidence les effets de l’entraînement et d’un effort de courte ou de longue durée sur la fonction cardiaque, ou encore de prédire, bien qu’avec une faible précision, le VO2max et les performances dans cette espèce. L’échocardiographie de stress a aussi été étudiée mais l’apport du Doppler tissulaire, d’apparition très récente dans cette espèce, devrait encore être intégré pour objectiver les résultats de ces tests. [less ▲]

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See detailEuropean outbreak of atypical myopathy in the autumn 2009.
Van Galen, Gaby ULg; Amory, Hélène ULg; Busschers, Evita et al

in Journal of Veterinary Emergency & Critical Care (2010)

Background: Atypical myopathy (AM) is an acute, severe rhabdomyolysis occurring in grazing horses. Since In the beginning of October 2009, a new outbreak affects started in several European countries ... [more ▼]

Background: Atypical myopathy (AM) is an acute, severe rhabdomyolysis occurring in grazing horses. Since In the beginning of October 2009, a new outbreak affects started in several European countries. Geographic, demographic and clinical data of the reported cases in the month October 2009 are described. Key Findings: The survival rate over the month October 2009 was 25%. The most frequently observed clinical signs were congestedive mucous membranes, dyspnea, tachycardia, depression, weakness, stiffness, recumbency, trembling, transpirationsweating, and myoglobinuria. Non-survivors were significantly more often likely to be recumbent than survivors. Prognostic factors, symptomatic treatment and preventive measures are discussed. Significance: Slight differences were encountered during the described outbreak of AM in October 2009 compared to previous studies. Equine practitioners should be alert aware that previous epidemiological studies have shown that after a high prevalence this autumn, for new cases are likely to occur in the upcoming spring 2010. [less ▲]

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See detailAlterations in mitochondrial respiratory function in response to endurance training and endurance racing
Votion, Dominique ULg; Fraipont, Audrey ULg; Goachet, Anne-Gaëlle et al

in Equine Veterinary Journal. Supplement (2010), 42(38), 268-274

Objectives: To determine effects of training and racing on muscle oxidative phosphorylation (OXPHOS) and electron transport system (ETS) capacities in horses with high-resolution respirometry (HRR).

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See detailA case of a periarticular abscess and suppurative arthritis of the atlanto-occipital joint
Van Galen, Gaby ULg; Busoni, Valeria ULg; Sandersen, Charlotte ULg et al

in Equine Veterinary Education (2009), 21(7), 340-343

This case report describes a periarticular abscess and a suppurative arthritis of the atlanto-occipital joint in an adult horse. The horse showed a painful swelling localized on the atlanto-occipital ... [more ▼]

This case report describes a periarticular abscess and a suppurative arthritis of the atlanto-occipital joint in an adult horse. The horse showed a painful swelling localized on the atlanto-occipital region and ataxia in all four limbs. During his hospitalization the horse developed recumbency, dysphagia, facial paralysis and seizures. With the use of ultrasonography of the atlanto-occipital region a tentative diagnosis was made which was later confirmed by autopsy. Culture of the abscess revealed a Staphylococcus aureus. However, the horse had a history of recurrent fever, hypertrophy and abcessation of the submandibular lymph nodes, neck pain and dyspnoea for 2 months, suggestive for strangles. [less ▲]

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See detailLes cardiomyopathies dans l’espèce bovine
Brihoum, Mounir ULg; Rollin, Frédéric ULg; Amory, Hélène ULg

in Annales de Médecine Vétérinaire (2009), 153(3), 156-163

Cardiomyopathies in cattle are disorders that are sometimes encountered by rural practitioner. They usually lead to cardiac dysfunction, heart failure, arrhythmias and even sudden death. Most of ... [more ▼]

Cardiomyopathies in cattle are disorders that are sometimes encountered by rural practitioner. They usually lead to cardiac dysfunction, heart failure, arrhythmias and even sudden death. Most of cardiomyopathies in cattle are of hereditary, nutritional or toxic origin. Bovine cardiomyopathies may involve only one animal as they may affect several animals of the farm and can cause considerable economic losses either in treatment costs, decrease of zootechnical performances or in mortality. The etiological variability of cardiomyopathies as well as non-specificity of clinical signs often complicate the diagnostic approach of the practitioner. In this paper, a literature review on cardiomyopathies that may occur in cattle is proposed. Their different aetiologies and clinical aspects as well as diagnostic means in affected cattle are discussed [less ▲]

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