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1.
J Am Vet Med Assoc ; 206(2): 215-20, 1995 Jan 15.
Article in English | MEDLINE | ID: mdl-7751225

ABSTRACT

A 4-month-old male Quarter Horse was referred for evaluation of urinary incontinence. Physical examination revealed clinical signs consistent with cauda equina syndrome. Radiography revealed diskospondylitis of S2 through S4. Infected bone was surgically curretted, and drainage was established for an associated paravertebral abscess. Rhodococcus equi was isolated from specimens of bone and from fluid samples obtained from the paravertebral abscess. Bethanechol was administered to stimulate urination. Erythromycin and rifampin were administered for 120 days. The foal's neurologic dysfunction resolved completely. Two years after discharge, the horse remained neurologically normal and did not have apparent effects as a result of its previous disorder.


Subject(s)
Actinomycetales Infections/veterinary , Cauda Equina , Horse Diseases/microbiology , Nerve Compression Syndromes/veterinary , Rhodococcus equi , Abscess/microbiology , Abscess/veterinary , Actinomycetales Infections/microbiology , Animals , Discitis/microbiology , Discitis/veterinary , Horses , Male , Nerve Compression Syndromes/microbiology , Sacrum , Spondylitis/microbiology , Spondylitis/veterinary
2.
J Am Vet Med Assoc ; 198(12): 2097-9, 1991 Jun 15.
Article in English | MEDLINE | ID: mdl-1885312

ABSTRACT

A 3-day-old Thoroughbred foal developed a large, air-distended, midcervical swelling that was diagnosed as a congenital tracheal bronchus with associated ectopic lung tissue. Clinical signs consisted of a compressible air-filled sac that enveloped the trachea. The nature and extent of the defect were evaluated endoscopically and radiographically. Surgical resection of the bronchus and associated air-filled sac resulted in a functionally and cosmetically acceptable outcome.


Subject(s)
Bronchi , Choristoma/veterinary , Horse Diseases/surgery , Lung , Tracheal Neoplasms/veterinary , Animals , Choristoma/congenital , Choristoma/surgery , Female , Horse Diseases/congenital , Horses , Tracheal Neoplasms/congenital , Tracheal Neoplasms/surgery
3.
J Am Vet Med Assoc ; 198(1): 120-2, 1991 Jan 01.
Article in English | MEDLINE | ID: mdl-1995567

ABSTRACT

Two horses became acutely lame following a fall during strenuous exercise and were diagnosed as having disruption of the caudal component of the reciprocal apparatus. Clinical signs consisted of lameness of the right pelvic limb, characterized by flexion of the hock and simultaneous extension of the stifle. Radiography revealed an avulsion fracture from the supracondylar tuberosity and fossa of the distal portion of the femur in one horse. Clinical and radiographic findings indicated avulsion of the lateral origin of the gastrocnemius and superficial digital flexor muscles. Treatment consisted of stall rest, limb immobilization, and phenylbutazone administration. One horse recovered to soundness and the other deteriorated and was euthanatized.


Subject(s)
Horse Diseases/etiology , Horses/injuries , Lameness, Animal/etiology , Muscles/injuries , Animals , Female , Male , Rupture
4.
Am J Vet Res ; 51(7): 999-1007, 1990 Jul.
Article in English | MEDLINE | ID: mdl-2202242

ABSTRACT

Cardiovascular responses to sublethal endotoxin infusion (Escherichia coli, 50 micrograms/ml in lactated Ringer solution at 100 ml/h until pulmonary arterial pressure increased by 10 mm of Hg) were measured 2 times in 5 standing horses. In a 2-period crossover experimental design, horses were either administered hypertonic (2,400 mosm/kg of body weight, IV) or isotonic (300 mosm/kg, IV) NaCl solution after endotoxin challenges. Each solution was administered at a dose of 5 ml/kg (infusion rate, 80 ml/min). Complete data sets (mean arterial, central venous, and pulmonary arterial pressures, pulmonary arterial blood temperature, cardiac output, total peripheral vascular resistance, heart rate, plasma osmolality, plasma concentration of Na, K, Cl, and total protein, blood lactate concentration, and PCV) were collected at 0 (baseline, before endotoxin infusion), 0.25, 1, 1.5, 2, 2.5, 3, 3.5, 4, and 4.5 hours after initiation of the endotoxin infusion. Blood constituents alone were measured at 0.5 hour and cardiovascular variables alone were evaluated at 0.75 hour. By 0.25 hour, endotoxin infusion was completed, a data set was collected, and saline infusion was initiated. By 0.75 hour, saline solutions had been completely administered. Mean (+/- SEM) cardiac output decreased (99.76 +/- 3.66 to 72.7 +/- 2.35 ml/min/kg) and total peripheral resistance (1.0 +/- 0.047 to 1.37 +/- 0.049 mm of Hg/ml/min/kg) and pulmonary arterial pressure (33.4 +/- 0.86 to 58.3 +/- 1.18 mm of Hg) increased for both trials by 0.25 hour after initiation of the endotoxin infusion and prior to fluid administration. For the remainder of the protocol, cardiac output was increased and total peripheral resistance was decreased during the hypertonic, compared with the isotonic, saline trial.(ABSTRACT TRUNCATED AT 250 WORDS)


Subject(s)
Escherichia coli Infections/veterinary , Horse Diseases/therapy , Pulmonary Artery/physiology , Saline Solution, Hypertonic/therapeutic use , Shock, Septic/veterinary , Sodium Chloride/therapeutic use , Animals , Blood Pressure/drug effects , Body Temperature/drug effects , Capillary Resistance/drug effects , Cardiac Output/drug effects , Dose-Response Relationship, Drug , Escherichia coli Infections/blood , Heart Rate/drug effects , Horse Diseases/blood , Horses , Infusions, Intravenous/veterinary , Isotonic Solutions , Male , Shock, Septic/blood , Shock, Septic/therapy , Time Factors
5.
Vet Surg ; 18(5): 353-9, 1989.
Article in English | MEDLINE | ID: mdl-2815552

ABSTRACT

Two mares with multiple carpal bone fractures, malarticulation and degenerative joint disease were successfully treated with unilateral arthrodeses of the antebrachiocarpal, middle carpal, and carpometacarpal joints. Arthrodesis was achieved by removal of articular cartilage, autogenous cancellous bone graft, and double dynamic compression plating. In one horse, wedge ostectomy corrected the severe, acquired angular limb deformity. External coaptation supplemented the internal fixation. Postoperative complications were limited to cast sores that healed with treatment, although protracted in one horse. Both mares adapted to the "peg leg" condition and ambulated without pain by 3 months. The first mare treated survived for at least 2 1/2 years after surgery and has had at least one foal. The most recently treated mare will be bred next year.


Subject(s)
Arthrodesis/veterinary , Carpus, Animal/surgery , Horses/surgery , Animals , Bone Plates/veterinary , Bone Screws/veterinary , Carpus, Animal/diagnostic imaging , Carpus, Animal/injuries , Female , Forelimb , Fractures, Bone/complications , Fractures, Bone/veterinary , Horses/injuries , Joint Instability/complications , Joint Instability/veterinary , Postoperative Complications/veterinary , Radiography
6.
J Am Vet Med Assoc ; 195(6): 781-3, 1989 Sep 15.
Article in English | MEDLINE | ID: mdl-2793548

ABSTRACT

A comminuted scapular fracture in a foal was treated surgically by use of 2 dynamic compression plates. The plates were applied upside down, so that the convex surface of the plate faced the bone. At 5 months after surgery, the plates were removed, and the foal recovered without complications.


Subject(s)
Bone Plates/veterinary , Fracture Fixation, Internal/veterinary , Fractures, Bone/veterinary , Horses/injuries , Scapula/injuries , Animals , Bone Screws/veterinary , Fractures, Bone/surgery , Male
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