Search results for: Geoffrey T. Fosgate

Items from 1 to 20 out of 47 results

article

Effect of di(n‐butyl) phthalate on the blood–testis barrier during puberty onset

Reneilwe A. Molele, Musa Zakariah, Mohammed I. A. Ibrahim, Mohamed A. A. Mahdy, more

Anatomia, Histologia, Embryologia > 52 > 3 > 411 - 420

Di(n‐butyl) phthalate (DBP) is considered a substance of serious concern because of its reproductive toxicity and endocrine‐disrupting properties. Exposure to DBP causes morphological and functional changes in the male reproductive system of birds and mammals. However, there are no detailed reports on the effects of DBP on the Sertoli cell and junctional complexes of the blood–testis barrier (BTB)...

article

Computed tomographic evaluation of the distal limb in the standing sedated horse: Technique, imaging diagnoses, feasibility, and artifacts

Nicoli Mathee, Mickaël Robert, Sheelagh Margaret Higgerty, Geoffrey T. Fosgate, more

Veterinary Radiology & Ultrasound > 64 > 2 > 243 - 252

In several veterinary institutions, adjustments of CT machines have been made that allow for imaging of the standing horse. The risk of general anesthesia is eliminated and the shorter scan completion time reduces cost to clients. The objective of this retrospective, analytical study was to evaluate the technique, imaging diagnoses, feasibility, and image artifacts of multi‐slice helical CT of horses’...

article

Comparative antimicrobial efficacy of 4 surgical hand‐preparation procedures prior to application of an alcohol‐based hand rub in veterinary students

Hermien Viljoen, Johan P. Schoeman, Geoffrey T. Fosgate, Charles Boucher

Veterinary Surgery > 51 > 3 > 447 - 454

Objective To determine the influence of skin preparations before application of an alcohol‐based hand rub (ABHR) on bacterial counts before and after elective surgery. Study design Clinical prospective study. Sample population Veterinary students (n = 103) performing ovariohysterectomies on 140 dogs. Methods Participants were randomly assigned to 1 initial surgical preparation on the day of...

article

Vaccination against GnRH as a prelude to surgical castration of horses

John R. Birrell, Martin L. Schulman, Alma E. Botha, André Ganswindt, more

Equine Veterinary Journal > 53 > 6 > 1141 - 1149

Background Surgical castration is one of the most frequently performed surgeries in horses and is associated with various post‐surgical complications ranging in severity. Objectives We investigated the effects of administering an anti‐GnRH vaccine to colts for reduction of testis size on the incidence of complications associated with their subsequent surgical castration. Study design Randomised...

article

Unforeseen consequences of conservation management practices: case study on herding rhino as an anti‐poaching measure

María C. Fàbregas, Geoffrey T. Fosgate, André Ganswindt, Henk Bertschinger, more

Animal Conservation > 24 > 3 > 412 - 423

The current biodiversity crisis calls for effective conservation measures. However, some measures may have unforeseen negative consequences on individual species. Herding, a management practice currently used in some wildlife species to protect animals from poachers, can cause habituation to humans, which unintentionally might increase their risk of being poached at a later time. Herding could also...

article

Study design synopsis: Bias can cast a dark shadow over studies

Geoffrey T. Fosgate

Equine Veterinary Journal > 53 > 2 > 205 - 216

The study of free‐living populations is important to generate knowledge related to the epidemiology of disease and other health outcomes. These studies are unable to provide the same level of control as is possible in laboratory studies and thus are susceptible to certain errors. The primary categories of study errors are random and systematic. Random errors cause imprecision and can be quantified...

article

The expected frequency and amount of free peritoneal fluid estimated using the abdominal FAST‐applied abdominal fluid scores in healthy adult and juvenile dogs

Gregory R. Lisciandro, Geoffrey T. Fosgate, Luis A. Romero, Samantha M. Hauke, more

Journal of Veterinary Emergency and Critical Care > 31 > 1 > 43 - 51

Objective To estimate the frequency and amount of free peritoneal fluid in juvenile and adult dogs using the abdominal focused assessment with sonography for trauma (AFAST) abdominal fluid scoring system. Design Prospective case series. Animals Healthy, privately owned juvenile and adult dogs. Procedures Dogs undergoing routine surgical sterilization were evaluated at induction with AFAST and...

article

Characterization of SAT2 foot‐and‐mouth disease 2013/2014 outbreak viruses at the wildlife–livestock interface in South Africa

Belinda Blignaut, Juanita Heerden, Björn Reininghaus, Geoffrey T. Fosgate, more

Transboundary and Emerging Diseases > 67 > 4 > 1595 - 1606

The Southern African Territories (SAT)‐type foot‐and‐mouth disease viruses (FMDV) are endemic to the greater Kruger National Park (KNP) area in South Africa, where they are maintained through persistent infections in African buffalo. The occurrence of FMDV within the Greater KNP area constitutes a continual threat to the livestock industry. To expand on knowledge of FMDV diversity, the genetic and...

article

Radiography is less sensitive relative to CT for detecting thoracic radiographic changes in dogs affected by blunt trauma secondary to a motor vehicle accident

Sumari C. Dancer, Christelle Le Roux, Geoffrey T. Fosgate, Robert M. Kirberger

Veterinary Radiology & Ultrasound > 60 > 6 > 648 - 658

Thoracic injuries caused by blunt trauma are commonly encountered emergencies in veterinary medicine. However, published studies are lacking that compare radiology to CT in blunt trauma caused by motor vehicle accidents in canine patients. The aim of this prospective diagnostic accuracy, methods comparison study were to estimate the sensitivity (Se) and specificity (Sp) of thoracic radiology relative...

article

Behavioral and adrenocortical responses of captive white rhino adolescents to the introduction of a new calf

María Cayetana Fàbregas, André Ganswindt, Geoffrey T. Fosgate, Henk J. Bertschinger, more

acta ethologica > 2019 > 22 > 3 > 227-231

Changes in group composition are not exclusive to zoos and conservation breeding centers. The recent increase in poaching of African rhino species has accelerated the arrival of orphan calves at rehabilitation centers. Introducing new members into an existing group is often stressful for many mammal species. However, when young animals are involved, such responses may be reduced or absent. The goal...

article

Comparison of biomarkers adiponectin, leptin, C‐reactive protein, S100A12, and the Acute Patient Physiologic and Laboratory Evaluation (APPLE) score as mortality predictors in critically ill dogs

Liza S. Köster, Geoffrey T. Fosgate, Jan Suchodolski, Jonathan Lidbury, more

Journal of Veterinary Emergency and Critical Care > 29 > 2 > 154 - 160

Objectives To determine if selected serum biomarkers are superior to the acute patient physiologic and laboratory evaluation (APPLE) complete score in predicting 30‐day mortality in a non‐homogeneous disease population of critically ill dogs. Design Prospective cohort study comparing the serum biomarkers adiponectin, leptin, C‐reactive protein, and S100A12 concentrations between surviving and nonsurviving...

article

Ovarian function following immunocontraceptive vaccination of mares using native porcine and recombinant zona pellucida vaccines formulated with a non-Freund's adjuvant and anti-GnRH vaccines

Margaret B. Nolan, Henk J. Bertschinger, Robyn Roth, Michael Crampton, more

Theriogenology > 2018 > 120 > C > 111-116

An important determinant in the selection of any contraceptive agent is the impact on ovarian function, both in the short and longer term. In this study, ovarian activity was monitored in mares immunised with one of the following vaccine formulations; native porcine zona pellucida (pZP), recombinant zona pellucida proteins ZP3 and ZP4 (reZP), pZP and reZP combined or a commercially available anti-GnRH...

article

Use of urinary bladder measurements from a point‐of‐care cysto‐colic ultrasonographic view to estimate urinary bladder volume in dogs and cats

Gregory R. Lisciandro, Geoffrey T. Fosgate

Journal of Veterinary Emergency and Critical Care > 27 > 6 > 713 - 717

Objective To develop a point‐of‐care ultrasound‐derived formula to estimate urinary bladder volume noninvasively in dogs and cats. Design Prospective case series. Setting Private 24‐hour veterinary emergency center. Animals Client‐owned dogs and cats requiring urethral catheterization. Interventions Ultrasound measurements of length, width, and height of balloons filled with known water volumes...

article

Frequency and number of B‐lines using a regionally based lung ultrasound examination in cats with radiographically normal lungs compared to cats with left‐sided congestive heart failure

Gregory R. Lisciandro, Robert M. Fulton, Geoffrey T. Fosgate, Kelly A. Mann

Journal of Veterinary Emergency and Critical Care > 27 > 5 > 499 - 505

Objective To establish a baseline lung ultrasound (LUS) artifact profile using a regionally based protocol in cats without clinical signs of respiratory disease and with radiographically normal lungs compared to a cohort of cats with left‐sided congestive heart failure (CHF). Design Prospective case series. Animals Forty‐nine cats without clinical signs of respiratory disease and with radiographically...

article

Evaluation of magnetic resonance imaging for the differentiation of inflammatory, neoplastic, and vascular intradural spinal cord diseases in the dog

Amanda E. Masciarelli, John F. Griffin, Geoffrey T. Fosgate, Silke Hecht, more

Veterinary Radiology & Ultrasound > 58 > 4 > 444 - 453

Magnetic resonance imaging (MRI) is a common test for dogs with suspected intradural spinal cord lesions, however studies on diagnostic performance for this test are lacking. Objectives of this multi‐institutional, retrospective, case‐control study were to estimate sensitivity and specificity of MRI for (1) distinguishing between histopathologically confirmed intradural spinal cord disease versus...

article

Biologic variability of cardiac troponin I in healthy dogs and dogs with different stages of myxomatous mitral valve disease using standard and high‐sensitivity immunoassays

Randolph L. Winter, Ashley B. Saunders, Sonya G. Gordon, Matthew W. Miller, more

Veterinary Clinical Pathology > 46 > 2 > 299 - 307

Background Biologic variability (BV) is one aspect of interpreting changes in biomarker concentrations known to be clinically important in people with cardiac disease, but it has not been adequately addressed in dogs so far. Objectives The purpose of the study was to determine BV of cardiac troponin I (cTnI) in healthy dogs and dogs with 3 stages of myxomatous mitral valve disease (MMVD). Methods...

article

Effects of thiopentone, propofol and alfaxalone on laryngeal motion during oral laryngoscopy in healthy dogs

Tesh M. Smalle, Marthinus J. Hartman, Lynette Bester, Roxanne K. Buck, more

Veterinary Anaesthesia and Analgesia > 2017 > 44 > 3 > 427-434

To compare the effects of thiopentone, propofol and alfaxalone on arytenoid cartilage motion and establish the dose rates to achieve a consistent oral laryngoscopy examination.Randomised crossover study.Six healthy adult Beagle dogs.Each dog was randomly administered three induction agents with a 1-week washout period between treatments. Thiopentone (7.5 mg kg⁻¹), propofol (3 mg kg⁻¹) or alfaxalone...

article

Biomechanical Comparison of 2 Veterinary Locking Plates to Monocortical Screw/Polymethylmethacrylate Fixation in Canine Cadaveric Cervical Vertebral Column

Bianca F. Hettlich, Geoffrey T. Fosgate, Alan S. Litsky

Veterinary Surgery > 46 > 1 > 95 - 102

Objective To compare the biomechanical properties of 2 veterinary locking plates and monocortical screws/polymethylmethacrylate (PMMA) fixation in canine cadaveric cervical vertebral columns. Study Design Biomechanical cadaveric study. Materials: Nineteen cervical vertebral columns (C2–C7) from large breed, skeletally mature, canine cadavers were used. A cortical ring was placed as a disk spacer...

article

Propofol–medetomidine–ketamine total intravenous anaesthesia in thiafentanil–medetomidine-immobilized impala (Aepyceros melampus)

Roxanne K. Buck, Leith R.C. Meyer, George F. Stegmann, Sabine B.R. Kästner, more

Veterinary Anaesthesia and Analgesia > 2017 > 44 > 1 > 138-143

To characterize a propofol–medetomidine-ketamine total intravenous anaesthetic in impala (Aepyceros melampus).Prospective clinical study.Ten adult female impala.Impala were immobilized at 1253 m above sea level with 2.0 mg thiafentanil and 2.2 mg medetomidine via projectile darts. Propofol was given to effect (0.5 mg kg⁻¹ boluses) to allow endotracheal intubation, following which oxygen was supplemented...

article

Evaluation of Three Human Cervical Fusion Implants for Use in the Canine Cervical Vertebral Column

Emily J. Morrison, Alan S. Litsky, Matthew J. Allen, Geoffrey T. Fosgate, more

Veterinary Surgery > 45 > 7 > 901 - 908

Objective To assess technical feasibility and mechanical properties of 3 locking plate designs (Zero‐P, Zero‐P VA, and Uniplate 2) for use in the canine cervical spine. Study Design Prospective ex vivo study. Animals Cadaver cervical spines from skeletally mature large breed dogs (n = 18). Methods Specimens were screened using radiography and allocated into balanced groups based on bone density...

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INFONA - science communication portal

Search results for: Geoffrey T. Fosgate

Effect of di(n‐butyl) phthalate on the blood–testis barrier during puberty onset

Computed tomographic evaluation of the distal limb in the standing sedated horse: Technique, imaging diagnoses, feasibility, and artifacts

Comparative antimicrobial efficacy of 4 surgical hand‐preparation procedures prior to application of an alcohol‐based hand rub in veterinary students

Vaccination against GnRH as a prelude to surgical castration of horses

Unforeseen consequences of conservation management practices: case study on herding rhino as an anti‐poaching measure

Study design synopsis: Bias can cast a dark shadow over studies

The expected frequency and amount of free peritoneal fluid estimated using the abdominal FAST‐applied abdominal fluid scores in healthy adult and juvenile dogs

Characterization of SAT2 foot‐and‐mouth disease 2013/2014 outbreak viruses at the wildlife–livestock interface in South Africa

Radiography is less sensitive relative to CT for detecting thoracic radiographic changes in dogs affected by blunt trauma secondary to a motor vehicle accident

Behavioral and adrenocortical responses of captive white rhino adolescents to the introduction of a new calf

Comparison of biomarkers adiponectin, leptin, C‐reactive protein, S100A12, and the Acute Patient Physiologic and Laboratory Evaluation (APPLE) score as mortality predictors in critically ill dogs

Ovarian function following immunocontraceptive vaccination of mares using native porcine and recombinant zona pellucida vaccines formulated with a non-Freund's adjuvant and anti-GnRH vaccines

Use of urinary bladder measurements from a point‐of‐care cysto‐colic ultrasonographic view to estimate urinary bladder volume in dogs and cats

Frequency and number of B‐lines using a regionally based lung ultrasound examination in cats with radiographically normal lungs compared to cats with left‐sided congestive heart failure

Evaluation of magnetic resonance imaging for the differentiation of inflammatory, neoplastic, and vascular intradural spinal cord diseases in the dog

Biologic variability of cardiac troponin I in healthy dogs and dogs with different stages of myxomatous mitral valve disease using standard and high‐sensitivity immunoassays

Effects of thiopentone, propofol and alfaxalone on laryngeal motion during oral laryngoscopy in healthy dogs

Biomechanical Comparison of 2 Veterinary Locking Plates to Monocortical Screw/Polymethylmethacrylate Fixation in Canine Cadaveric Cervical Vertebral Column

Propofol–medetomidine–ketamine total intravenous anaesthesia in thiafentanil–medetomidine-immobilized impala (Aepyceros melampus)

Evaluation of Three Human Cervical Fusion Implants for Use in the Canine Cervical Vertebral Column

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