Persistent Truncus Arteriosus (Types I, II, III, and IV) Flashcards

https://www.youtube.com/watch?v=SVVhez2GpgQ https://www.youtube.com/watch?v=193JQ6LQRwI

1
Q

In PTA, the Ao and Pa are ____.

A

combined

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2
Q

Type I PTA:

A

the Pa trunk arises from the main trunk

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3
Q

Type II PTA:

A

RPA and LPA arise from the main trunk.

Branches are on posterior side of main trunk.

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4
Q

Type III PTA:

A

RPA and LPA arise off main trunk towards the arch.

Branches are on lateral sides of main trunk.

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5
Q

Type IV PTA:

A

RPA and LPA branches off arch of main trunk.

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6
Q

Cause of PTA:

A
  1. No truncal septation
  2. Malformation of Conal Swellings
  3. Failure of spiral septation to occur
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7
Q

Associated lesion:

A

VSD

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8
Q

There is a ___ and ____ overload to the lungs.

A

volume, pressure

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9
Q

PTA is a ____ _____

A

cyanotic lesion

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10
Q

Surgical correction:

A
  1. Create a Pa by using the truncus or graft
  2. Valve repair / Patient may end up with 2 valve replacements.
  3. Close VSD
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11
Q

Additional characteristics for PTA

A
  1. Unusual coronaries
  2. Large VSD
  3. Tricuspid Regurge
  4. LA and RA dilated
  5. Large truncal valve
  6. Secundum ASD
  7. Atretic Pa (if arises from truncus)
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