Symposium: Thoracic Surgery in the Dog and Cat—III: Patent Ductus Arteriosus and Persistent Right Aortic Arch Surgery in Dogs*

Buchanan, J. W.

doi:10.1111/j.1748-5827.1968.tb04622.x

Cited by 25 publications

(18 citation statements)

References 7 publications

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“…7 The fact that 52 (95%) of 55 dogs with vascular ring anomalies in this report had PRAA confirms an estimate published 35 years ago suggesting that PRAA accounts for 95% of vascular ring anomalies in dogs. 8 The histologic findings in the 1-day-old neonate with PRAA explain the puzzling observation that stridorous respiration usually is the presenting sign of vascular ring anomalies in human infants, especially those with double aortic arch, 9,10 whereas esophageal dysfunction is the usual presenting sign in dogs. The neonatal puppy with PRAA (Fig 5) had protracted, wheezing expirations producing a sound like a ''whistle on the end of a balloon'' during the 24 hours it lived, according to the owner.…”

Section: Discussionmentioning

confidence: 93%

“…11 Because the large majority of vascular rings involve PRAA and related vessels, a surgeon with a good understanding of aortic arch embryology can determine the nature of the vascular abnormality by thoracotomy through the left 4th intercostal space and correct whatever vascular abnormality is found. a, 3,8,12 Footnote a http://cal.vet.upenn.edu/cardiosf…”

Section: Discussionmentioning

confidence: 99%

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Tracheal Signs and Associated Vascular Anomalies in Dogs with Persistent Right Aortic Arch

Buchanan

2004

Veterinary Internal Medicne

116

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Medical records of 55 dogs with 1 or more vascular rings around the esophagus and trachea were reviewed to determine the nature and frequency of related vascular anomalies and to determine the reliability of tracheal deviation on radiographs for the diagnosis of persistent right aortic arch (PRAA). Fifty‐two (95%) of the 55 dogs had PRAA. Of the 52 dogs with PRAA, 44% had coexisting compressive arterial anomalies: 17 had retroesophageal left subclavian artery and 6 had double aortic arch with atretic left arch. Characteristic tracheal deviation was consistently present in dogs with PRAA. Moderate or marked focal leftward curvature of the trachea near the cranial border of the heart in dorsoventral (DV) or ventrodorsal (VD) radiographs was found in 100% of available radiographs of 27 dogs with PRAA. Moderate or marked focal narrowing of the trachea also was noted in 74% of DV or VD radiographs and 29% of lateral radiographs of the dogs. Tracheal position in 30 of 30 dogs with megaesophagus and 62 of 63 control dogs was midline or rightward in VD or DV radiographs. Histology in a neonatal dog with PRAA revealed evidence of tracheal deviation and compression even before birth. Focal leftward deviation of the trachea near the cranial border of the heart in DV or VD radiographs is a reliable sign of PRAA in young dogs that regurgitate after eating solid food, and contrast esophagrams are not necessary to confirm the diagnosis of vascular ring compression.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Tracheal Signs and Associated Vascular Anomalies in Dogs with Persistent Right Aortic Arch

Buchanan

2004

Veterinary Internal Medicne

116

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“…Even valve replacement has been attempted (Eyster and others 1976c) and obstructions have been bypassed (Breznock and others 1983), but repair usually entails cardiac bypass, requiring resources beyond the reach of the finances of most clients and beyond the facilities of most British referral centres (Eyster and Evans 1974, Klement and others 1987). The defect repaired most simply is patent ductus arteriosus (Buchanan 1968, Breznock and others 1971, Wolfe 1979, Jones and Buchanan 1981. However, even the surgery for this lesion can be problematic.…”

Section: Treatmentmentioning

confidence: 99%

Congenital heart disease in dogs and cats

Darke¹

1989

J of Small Animal Practice

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The presence of congenital heart disease in dogs and cats is usually indicated by a cardiac murmur. There may or may not be further signs of cardiac failure. The type and site of a murmur often suggests the nature of the underlying lesion, but electrocardiography and radiography can give further indications of the nature of the defect. Advanced diagnostic procedures include cardiac catheterisation for angiography, blood pressure recording and blood gas analysis, but this technique is now being superseded in many cases by cardiac ultrasound. Some lesions can be demonstrated directly by echocardiography, but the source of the murmur and the severity of the deformity can be defined precisely by Doppler. Congenital cardiovascular disorders can increasingly be relieved by sophisticated surgery.

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“…The constricting component of the vascular ring that is most commonly divided is a left ligamentum arteriosum (Buchanan 1968, Helphrey 1979, Ellison 1980, VanGundy 1989. Rare cases require division of other structures such as retro-oesophageal aberrant left subclavian arteries, a left or right ductus arteriosus, and a left or right aortic arch in cases of double aortic arches (Buchanan 1968, Helphrey 1979, Ellison 1980, VanGundy 1989, Holt and others 2000. Preoperative evaluation, especially angiography, improves planning of the surgical approach and identification of structures requiring ligation and division.…”

Section: Introductionmentioning

confidence: 99%

Unusual vascular ring anomaly associated with a persistent right aortic arch in two dogs

House

Summerfield

German

et al. 2005

J of Small Animal Practice

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An unusual vascular ring anomaly consisting of a persistent right aortic arch and a left ligamentum arteriosum extending from the main pulmonary artery to an aberrant left subclavian artery and left aortic arch remnant complex was identified in a German shepherd dog and a great Dane. The left subclavian artery and left aortic arch remnant complex originated at the junction between the right distal aortic arch and the descending aorta and coursed dorsal to the oesophagus in a cranial direction. The attachment of the ligamentum arteriosum to the aberrant left subclavian artery was approximately 5 cm cranial to the point of origin of the aberrant left subclavian artery and left aortic arch remnant complex from the descending aorta in both dogs. This anomaly observed in both dogs is similar to an anomaly reported in humans, in which a persistent right aortic arch is found in conjunction with an aberrant left subclavian artery and a left aortic arch remnant (Kommerell's diverticulum). Surgical ligation and division of the left ligamentum arteriosum in both dogs, along with division of the left subclavian artery in the great Dane, resulted in resolution of clinical signs in both of the dogs in this report.

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Symposium: Thoracic Surgery in the Dog and Cat—III: Patent Ductus Arteriosus and Persistent Right Aortic Arch Surgery in Dogs*

Cited by 25 publications

References 7 publications

Tracheal Signs and Associated Vascular Anomalies in Dogs with Persistent Right Aortic Arch

Tracheal Signs and Associated Vascular Anomalies in Dogs with Persistent Right Aortic Arch

Congenital heart disease in dogs and cats

Unusual vascular ring anomaly associated with a persistent right aortic arch in two dogs

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