Clinical Experiences With Axial Deviation of the Aryepiglottic Folds in 52 Racehorses

King, Dana; Tulleners, Eric P.; Martin, Benson B.; Parente, Eric J.; Boston, Ray

doi:10.1053/jvet.2001.21389

Cited by 67 publications

(96 citation statements)

References 7 publications

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“…At that, grades B of submaximal abduction and C of dynamic collapse were further divided into three subgrades respectively. Axial deviation of the aryepiglottic fold (ADAF) was defined according to King et al 2001 and dynamic pharyngeal collapse (PC) according to Boyle et al 2006. Occurrence of a dorsal displacement of the soft palate (DDSP) was classified into rarely short (<3×/10 sec), often short (>3×/10 sec) and long to continuous (>8 sec) DDSP.…”

Section: Discussionmentioning

confidence: 99%

Frequencies of dynamic obstructions of the upper respiratory tract in 135 Thoroughbreds during on-board exercise endoscopy

Oellers¹,

Barton²,

Ohnesorge³

2018

PHK

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Summary:The frequencies of dynamic obstructions in thoroughbreds were investigated by performing on-board exercise endoscopy in 135 horses. 17 of these horses showed abnormal respiratory noise only and 35 solely poor performance. In 39 cases, both was reported. In addition, 44 horses underwent endoscopy without any clinical signs. In all of 56 horses that exhibited an audible abnormal respiratory noise, an obstruction of the upper respiratory tract was present. Overall, dynamic upper airway obstructions were detected in 72.6 % (98/135). The most commonly diagnosed obstruction was axial deviation of the aryepiglottic fold (ADAF) in 55.1% of horses (54/98). 24.4 % (24/98) showed palatal instability (PI), 30.6 % (30/98) dorsal displacement of the soft palate (DDSP) and 11.2 % (11/98) arytenoid cartilage collapse (ACC). Furthermore, 53.1% (52/98) of horses had abnormalities in the area of the vocal folds. Of these horses, 13 had unilateral or bilateral vocal cord collapse (VCC) and 8 displayed vibration of the vocal cords. 31 horses showed axial deviation in the area of the caudal vocal fold (ADPV) as a sole abnormality. By the new description of these ADPV, the origin of the abnormal respiratory noise in a further proportion of horses could be explained. Including ADPV, an obstruction of the upper airways was observed in all horses (100 %) with specified abnormal respiratory noise. If only horses with long or continuous (> 8 sec) DDSP were taken into account, abnormal respiratory noise was audible in 93.3 % and poor performance was present in 73.3 %. It can thus be assumed that horses with DDSP requiring treatment are clinically apparent either with abnormal respiratory noise or poor performance. Furthermore, it was demonstrated, that in 52.3% of horses without poor performance or abnormal respiratory noise an dynamic upper airway obstruction was identified.

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Section: Discussionmentioning

confidence: 99%

Frequencies of dynamic obstructions of the upper respiratory tract in 135 Thoroughbreds during on-board exercise endoscopy

Oellers¹,

Barton²,

Ohnesorge³

2018

PHK

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“…The cricopharyngeus and thyropharyngeus muscles were separated along their aponeurosis to expose the muscular process of the arytenoid cartilage and 2 sutures of number 5 silicone-coated braided polyester (Ticro) c were placed between the caudal aspect of the cricoid cartilage and muscular process of the arytenoid cartilage. Additionally, 6 cases underwent standing transendoscopic laser resection of the right aryepiglottic fold using a contact diode laser (Diomed 25) e , under sedation and topical local anaesthesia, as previously described [19]. A bilateral VCE via a laryngotomy approach was then performed [1] by everting then sharply excising each laryngeal ventricle, then excising part of each vocal fold from 3 mm proximal to the ventral junction of thyroid cartilage wings to the vocal process (typically a 3 cm x 1.5 cm section of tissue).…”

Section: Surgical Proceduresmentioning

confidence: 99%

Dynamic respiratory endoscopic findings pre‐ and post laryngoplasty inThoroughbred racehorses

Leutton¹,

Lumsden²

2014

Equine Veterinary Journal

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“…High-speed treadmill endoscopy (HSTE) is widely accepted as the current gold standard for the diagnosis of diseases of the upper portion of the respiratory tract in horses 4,5 . The diagnosis of the HSTE upper respiratory tract disorders has been very useful in understanding its pathophysiology and its relations with dynamic upper respiratory tract abnormalities 4,[6][7][8][9][10][11] . Although HSTE provides great advantages in the diagnosis of dynamic obstructions of the upper respiratory tract, it also has some disadvantages including its high initial cost, the horse being unable to get used to running on the treadmill, and the failure of the artificial environment created to fully represent the environment that the horse is introduced on the racecourse 4,12,13 .…”

Section: Evaluation Of the Dynamic (Overground) Endoscopy Procedures Imentioning

confidence: 99%

Evaluation of The Dynamic (Overground) Endoscopy Procedure in The Diagnosis of Upper Respiratory Tract Diseases Affecting Performance of Racehorses

Maden¹

2013

Kafkas Univ Vet Fak Derg

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SummaryIn this study, efficiencies of dynamic (overground) and resting endoscopic examinations were compared in dynamic upper respiratory tract problems which are a cause of poor performance in race horses. Thirty actively-racing horses which were brought to Turkey Jokey Club Racehorses Hospital with poor performance and abnormal respiratory tract sounds were examined while running and rest. The diagnostic effectiveness of dynamic endoscopy and resting endoscopy procedures were compared for the diagnosis of dynamic obstructions of the upper respiratory tract. Dynamic pharyngeal collapse (DPC) in 5 race horses, third or fourth degree of left laryngeal hemiplegia (LLH) in 3 race horses, second degree of axial deviation of aryepiglottic folds (ADAF) in 3 racehorses, rostral displacement of the palatopharyngeal arch (RDPA) in 1 racehorse, and dorsal displacement of the soft palate (DDSP) along with first degree of ADAF in 1 racehorse were detected in the mobile endoscopic exams. Dynamic upper respiratory tract problem was detected totally in 13 horses. As a result, it was observed that dynamic upper respiratory tract problems could be safely detected by dynamic endoscopy and it was superior than routine endoscopic examination in racehorses.

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Clinical Experiences With Axial Deviation of the Aryepiglottic Folds in 52 Racehorses

Cited by 67 publications

References 7 publications

Frequencies of dynamic obstructions of the upper respiratory tract in 135 Thoroughbreds during on-board exercise endoscopy

Frequencies of dynamic obstructions of the upper respiratory tract in 135 Thoroughbreds during on-board exercise endoscopy

Dynamic respiratory endoscopic findings pre‐ and post laryngoplasty inThoroughbred racehorses

Evaluation of The Dynamic (Overground) Endoscopy Procedure in The Diagnosis of Upper Respiratory Tract Diseases Affecting Performance of Racehorses

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