Standing hand-assisted laparoscopic ovariohysterectomy to treat chronic pyometra in a mare.

Objective: To describe a standing hand-assisted laparoscopic ovariohysterectomy in a mare.

Animal: A 15-year-old maiden Oldenburg mare.

Clinical Presentation, Progression, And Procedures: The mare was presented for evaluation of bucking under saddle and uncharacteristic aggressive behavior.

The effect of cyanoacrylate on knot elongation in three sutures used for prosthetic laryngoplasty in the horse.

Objective: This study investigated the elongation following cyclic loading on square knots of 5 USP multifilament long-chain ultra-high molecular weight polyethylene core (UHMWPE), 2 mm woven UHMWPE tape, and 5 USP braided polyester, with and without cyanoacrylate glue.

Study Design: Experimental study.

Sample Population: n = 4.

Percutaneous doxycycline sclerotherapy in a horse with a mandibular aneurysmal bone cyst.

Objective: To describe the use and outcome of sclerotherapy with intralesional doxycycline foam in a horse with a mandibular aneurysmal bone cyst.

Study Design: Case report.

Animals: Client-owned 1 year old Standardbred filly.

Epiglottopexy for the treatment of epiglottic retroversion in 2 horses.

Objective: To report an epiglottopexy technique for the treatment of epiglottic retroversion (ER) in 2 horses.

Study Design: Case report.

Animals: A 2-year-old thoroughbred gelding and a 6-year-old standardbred gelding, both with ER.

Using quarterly earnings to assess racing performance in 66 thoroughbreds after transendoscopic laser surgery for treatment of epiglottic entrapment.

Objective: To assess the outcome of transendoscopic laser surgery for the treatment of epiglottic entrapment (EE) and determine the influence of preoperative morphological characteristics on outcomes.

Study Design: Retrospective cohort study.

Animals: Thoroughbred racehorses treated with transendoscopic laser surgery (n = 66) and untreated cohorts (n = 132).

Upper Airway Conditions Affecting the Equine Athlete.

Many abnormalities of the upper airway that can inhibit performance are determined on a critical resting endoscopic evaluation. Some dynamic abnormalities can only be seen during an exercising endoscopic evaluation, which should be performed whenever the history of abnormal noise or performance limitations is not completely consistent with the resting endoscopic findings. Head and neck position may play a critical role in the evaluation process and the exact position during performance should be reproduced during the clinical examination to definitively define the abnormality.

Prosthetic Mesh for Obliteration of the Nephrosplenic Space in Horses: 26 Clinical Cases.

Objective: To report surgical complications, occurrence of post-obliteration colic, long term outcome, and return to previous function for horses treated with prosthetic mesh obliteration of the nephrosplenic space.

Study Design: Retrospective study.

Animals: Horses (n = 26) having nephrosplenic space obliteration using prosthetic mesh.

Hand-assisted laparoscopic repair of a grade IV rectal tear in a postparturient mare.

Case Description: An 8-year-old multiparous Thoroughbred broodmare was admitted for evaluation of a rectal tear sustained during parturition.

Clinical Findings: On initial evaluation, the mare had mild signs of abdominal discomfort. A full-thickness rectal tear located 30 cm cranial to the anus and extending approximately 15 cm longitudinally along the surface of the small colon between the 4 and 6 o'clock positions, when viewed from behind, was diagnosed on examination per rectum.

Headshaking in 5 horses after paranasal sinus surgery.

Objective: To report headshaking and presumptive trigeminal neuritis as a potential complication after paranasal sinus surgery in horses.

Study Design: Retrospective case series.

Animals: Horses (n = 5) that developed headshaking within 45 days of paranasal sinus surgery.

In vitro mechanical testing of an alternate laryngoplasty system (ALPS) for horses.

Objective: Mechanical evaluation of a novel alternate laryngoplasty system (ALPS).

Study Design: Experimental.

Animal Population: Cadaveric horse larynges (n = 10).

Using quarterly earnings to assess racing performance in 70 thoroughbreds after modified laryngoplasty for treatment of recurrent laryngeal neuropathy.

Objective: To validate and then use quarterly earnings to assess racing performance of Thoroughbreds after modified laryngoplasty for treatment of recurrent laryngeal neuropathy

Study Design: Retrospective cohort study.

Animals: Thoroughbred racehorses after modified laryngoplasty (N = 70), and untreated cohorts (N = 210).

Methods: Medical (2005-2008) and race records of 70 Thoroughbred racehorses treated by modified laryngoplasty were reviewed.

Epiglottic abnormalities in mature nonracehorses: 23 cases (1990-2009).

Objective: To identify history, clinical signs, endoscopic findings, treatment, and outcome of mature (> 8 years old) nonracehorses with epiglottic abnormalities.

Design: Retrospective case series.

Animals: 23 horses with an epiglottic abnormality.

A modified laryngoplasty approach promoting ankylosis of the cricoarytenoid joint.

Objective: To perform a modification to the standard laryngoplasty procedure in vivo that would result in ankylosis of the cricoarytenoid (CA) joint, and determine the stability provided to the abducted arytenoid in vitro.

Study Design: Experimental study.

Animals: Horses (n=8).

Exercising videoendoscopic evaluation of 45 horses with respiratory noise and/or poor performance after laryngoplasty.

Objective: To (1) assess upper airway function by videoendoscopy in horses performing poorly after laryngoplasty and (2) establish whether dynamic collapse of the left arytenoid can be predicted by the degree of resting postsurgical abduction.

Study Design: Case series.

Animals: Horses that had left laryngoplasty (n=45).

Laser vaporization of the dorsal turbinate as an alternative method of accessing and evaluating the paranasal sinuses.

Objective: To report a technique for stoma creation into the conchofrontal sinus (CFS) through the dorsal turbinate and to evaluate stoma as a site for sinoscopy.

Study Design: Prospective experimental study.

Animals: Cadaveric equine heads (n=2) and normal adult horses (5).

Extraluminal, C shaped polyethylene prostheses in two ponies with tracheal collapse.

Objective: To describe the surgical technique, complications, and outcome after use of extraluminal prostheses in 2 ponies with severe tracheal collapse.

Study Design: Clinical report.

Animals: Ponies (n=2) with severe tracheal collapse.

Mechanical evaluation of the equine laryngoplasty.

Objectives: Mechanical evaluation of the equine laryngoplasty.

Study Design: Experimental.

Animal Population: Cadaveric cricoid (n=36) and arytenoid (46) cartilages.

An atypical equine gastrointestinal stromal tumor.

A 17-year-old, gelded Quarter Horse cross was found to have a large, intra-abdominal mass. Clinical signs included infrequent mild colic, weight loss, and chronic anemia. Surgery revealed a very large, discrete, hemorrhagic, multilobular mass with vascular attachments to the transverse colon, mesocolon, jejunal mesentery, and omentum; the site of origin was the transverse colon.

Surgical complications of the equine upper respiratory tract.

Upper respiratory abnormalities are common performance-limiting problems in horses. The complications of various treatment methods, including laryngoplasty surgery, sinus surgery, intermittent dorsal displacement of the soft palate, laser surgery, and tracheal disorders, are discussed.

Serial gastrointestinal ultrasonography following exploratory celiotomy in normal adult ponies.

The objective was to characterize ultrasonographic changes in bowel wall thickness, contractility, degree of distension, luminal contents, and peritoneal fluid associated with exploratory celiotomy in normal ponies. Gastrointestinal ultrasonographic examination was performed in 14 ponies on days 1, 3, 5, and 7 after an exploratory celiotomy. Wall thickness, contractility, degree of distension, and luminal contents were recorded for the duodenum and jejunum.

Gastrointestinal ultrasonography in normal adult ponies.

The objective of this study was to determine the characteristics based on ultrasonographic examination of the stomach, duodenum, jejunum, cecum, and peritoneal fluid in normal adult ponies. Abdominal ultrasonographic examination was performed in nine unsedated standing ponies. The duodenum was examined at three sites and the jejunum in 12 regions.

Use of successive dynamic videoendoscopic evaluations to identify progression of recurrent laryngeal neuropathy in three horses.

Case Description: 3 racehorses were evaluated because of poor performance or abnormal noise originating from the upper portion of the respiratory tract.

Clinical Findings: During maximal exercise, initial dynamic videoendoscopy of the upper respiratory tract revealed complete arytenoid cartilage abduction in 2 horses and incomplete but adequate abduction of the left arytenoid cartilage in 1 horse. Subsequent exercising endoscopic evaluation revealed severe dynamic collapse of the left arytenoid cartilage and vocal fold in all 3 horses.

Management of bilateral choanal atresia in a foal.

Case Description: A 1-day-old Standardbred foal with a history of extreme respiratory distress after birth consistent with upper airway obstruction was evaluated. A temporary tracheostomy tube was placed by the referring veterinarian.

Clinical Findings: On initial examination, there was evidence of hypoxic-ischemic syndrome, secondary to perinatal asphyxia.

Laparoscopic obliteration of the nephrosplenic space using polypropylene mesh in five horses.

Objective: To report a laparoscopic technique for insertion of polypropylene mesh in the nephrosplenic space in horses and evaluate outcome.

Study Design: Descriptive experimental study.

Animals: Five healthy mature horses.