Echocardiography in the chinchilla     

Linde A  Summerfield NJ  Johnston M  Melgarejo T  Keffer A  Ivey E 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2004,18(5):772-774

Heart disease has been described in the chinchilla and, with increasing popularity as a pet, the demand for diagnostic evaluation and treatment has increased. The goal of this study was to determine reference values for echocardiographic measurements in chinchillas and the effect of anesthesia on these measurements. Seventeen clinically healthy adult chinchillas were studied. All animals were anesthetized with isoflurane by mask. Standard echocardiographic views were used. A difference was seen in the echocardiographic measurements for left ventricular systolic dimension, fractional shortening, aortic (Ao) diameter, left atrial (LA) diameter, ratio of LA diameter to Ao diameter, and peak flow velocities and ejection times for Ao and pulmonary artery flows between awake and anesthetized chinchillas.  相似文献   

刺槐心材腐朽病初报   总被引：6，自引：0，他引：6  

戴玉成  高强 《东北林业大学学报》2005,33(1):95-95,98

辽宁大连和北京地区刺槐(Robinia pseudoacacia)心材腐朽病的病原菌为槐生多年卧孔菌(Perenniporia robiniophila(Murrill)Ryvarden)。根据野外调查对此新病害的症状和危害进行了报道,并根据采集的病原标本材料对该病原菌进行了详细描述。该菌主要危害30年生以上的活立木,造成心材白色腐朽,最终导致受害树木枯死或风折后死亡。  相似文献   

紫锥菊根末的安全药理学研究     

张伟  郭世宁 《中国兽药杂志》2013,47(9):34-35

对健康昆明小鼠连续一周灌服不同浓度的紫锥菊根末生药液,观察其对健康昆明小鼠中枢神经系统、呼吸系统和心率的影响,以考察紫锥菊根末的潜在不良反应.结果表明,紫锥菊根末对健康昆明小鼠的中枢神经系统、呼吸系统和心率均无明显影响.  相似文献   

Using Cardiac Biomarkers in Veterinary Practice     

《Veterinary Clinics of North America: Small Animal Practice》2013,43(6):1261-1272

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Short‐Term Hemodynamic and Neuroendocrine Effects of Pimobendan and Benazapril in Dogs with Myxomatous Mitral Valve Disease and Congestive Heart Failure     

J. Häggström  P.F. Lord  K. Höglund  I. Ljungvall  O. Jöns  C. Kvart  K. Hansson 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2013,27(6):1452-1462

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Physiological responses of young thoroughbred horses to intermittent high-intensity treadmill training     

Hajime Ohmura  Akira Matsui  Tetsuro Hada  James H Jones 《Acta veterinaria Scandinavica》2013,55(1):59

Background

Training of young Thoroughbred horses must balance development of cardiopulmonary function and aerobic capacity with loading of the musculoskeletal system that can potentially cause structural damage and/or lameness. High-speed equine treadmills are sometimes used to supplement exercise on a track in the training of young Thoroughbreds because the horse can run at high speeds but without the added weight of a rider. We tested the hypothesis that intermittent high-intensity exercise on a treadmill of young Thoroughbred horses entering training can enhance development of aerobic capacity (Vo₂max) and running performance more than conventional training under saddle, and do so without causing lameness.

Results

Twelve yearling Thoroughbreds trained for 8 months with conventional riding (C) only, conventional riding plus a short (2 month, S) interval of once-per-week high-intensity treadmill exercise, or a long (8 month, L) interval of once-per-week high-intensity treadmill exercise. Three treadmill exercise tests evaluated Vo₂max, oxygen transport and running performance variables in June of the yearling year (only for L), October of the yearling year and April of the 2-year-old year. No horses experienced lameness during the study. Aerobic capacity increased in all groups after training. In both October and April, Vo₂max in L was higher than in C, but did not differ between L and S or S and C. Running speeds eliciting Vo₂max also increased in all groups after training, with S (809 ± 3 m/s) and L (804 ± 9 m/s) higher than C (764 ± 27 m/s). Maximum heart rate decreased for all groups after training. Hematocrit and hemoglobin concentration increased for L throughout training.

Conclusions

Young Thoroughbred horses can increase aerobic capacity and running performance more than by strictly using track training under saddle with the addition of intermittent high-intensity treadmill exercise, and they can do so without experiencing lameness. This finding suggests that young racehorses might be able to achieve higher aerobic fitness during training without subjecting their musculoskeletal systems to increased loading and risk of developing lameness. The findings of this preliminary study do not indicate a specific protocol to best achieve this goal.  相似文献   

Computed tomography angiography of coarctation of the aorta in a dog     

Laura C. Cuddy  Herbert W. Maisenbacher  Alessio Vigani  Clifford Berry 《Journal of Veterinary Cardiology》2013,15(4):277-281

Coarctation of the aorta has been described previously as either a post-mortem or angiographic finding in three dogs with clinical signs related to the aortic coarctation. A 10-year-old dog was presented for evaluation of suspected laryngeal paralysis. On physical examination, femoral pulses were absent bilaterally, with an indirect systolic blood pressure difference of 60 mmHg between the ipsilateral thoracic and pelvic limbs. Coarctation of the aorta was detected on a thoracic computed tomographic angiography study. The coarctation was pre-ductal in position, with extensive dilation of the descending thoracic aorta. Characteristic rib changes that are seen in humans with coarctation were not apparent in this dog. 3D reconstructions of the thorax provided high vascular definition with exact localization of the aortic narrowing.  相似文献   

Streptococcus zooepidemicus Myocardial Abscessation in a 1-Month-Old Thoroughbred Foal     

Carney Jackson  David Newman  Steve Locke 《Journal of Equine Veterinary Science》2008,28(2):103-104

A 1-month-old male Thoroughbred foal was presented at necropsy. A focal purulent lesion was observed in the right ventricular free wall of the myocardium. To the authors' knowledge, this is the first report of Streptococcus zooepidemicus myocardial abscessation in an equine.  相似文献   

Comparison of 3 ultrasound methods for quantifying left ventricular systolic function: correlation with disease severity and prognostic value in dogs with mitral valve disease     

Serres F  Chetboul V  Tissier R  Poujol L  Gouni V  Carlos Sampedrano C  Pouchelon JL 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2008,22(3):566-577

BACKGROUND: End-systolic volume index (ESVI) is a marker of systolic function, which can be assessed by the geometric (GM, based on Teichholz formula) or 2 planimetric methods (PM, Simpson's derived and length area methods). HYPOTHESIS: Systolic dysfunction (SyD) may be observed in dogs with mitral valve disease (MVD) and is better assessed by PM than GM, which does not take into account the longitudinal left ventricular systolic shortening. ANIMALS: Six healthy dogs were used to determine the variability of the tested variables (Study 1). These variables were then prospectively assessed (Study 2) in 101 small breed dogs: 77 dogs with MVD and 24 healthy controls (CD). METHODS: ESVI was measured by GM and PM in awake dogs. RESULTS: All within- and between-day coefficients of variation were <11% (Study 1). For Study 2, a nonlinear overestimation of ESVI was observed by GM compared with PM. PM-derived ESVI was significantly increased in ISACHC class 3 dogs compared with ISACHC class 1 dogs and exerted a significant influence on cardiac events at 5 months in dogs with MVD from ISACHC classes 2 and 3 (P < .05). CONCLUSIONS AND CLINICAL IMPORTANCE: ESVI can be calculated by GM and PM with good repeatability and reproducibility. However, GM overestimates ESVI in a nonlinear way. Therefore, PM-derived ESVI should be preferred for the detection of SyD that is present at the late stages of the disease.  相似文献   

Equine Electrocardiography     

《Veterinary Clinics of North America: Equine Practice》2019,35(1):65-83

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