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Flashcards in PRAA Deck (15):
1

An alternative, caudal approach to the ligamentum can be done with an endoscope port placed in the middle of the ____ intercostal space with instrument ports in the dorsal and ventral aspects of the ___intercostal space and a port in the ventral aspect of the___intercostal space for lung retraction (Monnet, 2011 in Tams endoscopy book). Visualization and dissection proceed from caudal to cranial, similar to the preceding lateral approach. (Fossum 459)

An alternative, caudal approach to the ligamentum can be done with an endoscope port placed in the middle of the 10th intercostal space with instrument ports in the dorsal and ventral aspects of the 9th intercostal space and a port in the ventral aspect of the 6th intercostal space for lung retraction (Monnet, 2011). Visualization and dissection proceed from caudal to cranial, similar to the preceding lateral approach. (Fossum 459)

2

List the described persistent aortic arches

-PRAA and left ligamentum arteriosum
-PRAA and left subclavian artery
-PRAA and left lig arteriosum and subclavian
-Dbl aortic arch
-Left aortic arch (normal) and persistent right lig arteriosum (or ductus arteriosum)
-LAA and rt subclavian

3

Most common vascular ring anomaly described in dogs (and humans for that matter)

Aberrant rt subclavian aa,

4

% of persistent left ligamentum arteriosum that are patent with PRAA

Up to 10%

5

Vascular ring anomaly that accounts for the most clinical cases reported? And what % of the reported clinical cases is that?

PRAA w left ligamentum arteriosum. 95%

6

What is the preferred approach for correction of the most common clinically significant Vasc ring anomaly

Left 4th intercostal - dogs, 5th may be preferred in cats

7

Which vasc ring anomalies would you rather not approach as you would for the most common type of vasc ring anomaly? And which one of those can you not fix from this approach?

Aberrant right subclavian can be fixed from the more common left sided approach, but youd rather have approached it from the right. Persistent LAA w right lig arteriosum cannot be corrected from a left approach

8

Prognosis ass w/ sx correction?

Persistent regurg most common complication
2 week survival 94%
Long term - 92% excellent, 8% good
Another study
35.7% very good, 42.9% good

9

List the described persistent aortic arches

-PRAA and left ligamentum arteriosum
-PRAA and left subclavian artery
-PRAA and left lig arteriosum and subclavian
-Dbl aortic arch
-Left aortic arch (normal) and persistent right lig arteriosum (or ductus arteriosum)
-LAA and rt subclavian

10

Most common vascular ring anomaly described in dogs (and humans for that matter)

Aberrant rt subclavian aa,

11

% of persistent left ligamentum arteriosum that are patent with PRAA

Up to 10%

12

Vascular ring anomaly that accounts for the most clinical cases reported? And what % of the reported clinical cases is that?

PRAA w left ligamentum arteriosum. 95%

13

What is the preferred approach for correction of the most common clinically significant Vasc ring anomaly

Left 4th intercostal - dogs, 5th may be preferred in cats

14

Which vasc ring anomalies would you rather not approach as you would for the most common type of vasc ring anomaly? And which one of those can you not fix from this approach?

Aberrant right subclavian can be fixed from the more common left sided approach, but youd rather have approached it from the right. Persistent LAA w right lig arteriosum cannot be corrected from a left approach

15

Prognosis ass w/ sx correction?

Persistent regurg most common complication
2 week survival 94%
Long term - 92% excellent, 8% good
Another study
35.7% very good, 42.9% good