1. Complex ASD Closures John M
Complex ASD Closures John M. Lasala MD PhD Director Interventional Cardiology Professor of Medicine Washington University St Louis MO

2. DISCLOSURES
John M. Lasala, MD, PhD
Honoraria
AGA Medical Corporation

3. ASD ANATOMIC
RIM DEFINITIONS:

4. So when is a paucity/absence of rim really an issue?
Type of Rim Absence Acceptable Device Candidate
Retro-Aortic Rim Absence Yes
Posterior Rim Absence Probably NO; depends on defect size
(enhanced migration risk)
Inferior Rim Depends on extent & C.S. *
Superior Rim Yes, except true S.V. + PAPVR
AV Valve Rim Depends on overall extent & proximity of device to M.V. leaflet *

5. Complex Atrial Septal Defects
Centrally placed secundum ASD found in only 24% of cases 42% deficient superior anterior rim 10% defecient inferior posterior rim 8% perforated aneurysm of atrial septum 7% inferior and anterior rim defeciencies 3% inferior and superior rim defeciencies 1-2% posterior /inferior posterior, coronary sinus, superio/posteror Pondar,et.al.CCI, 2001;53;386

6. Large ASDs with Deficient Anterosuperior Rims
Largest percentage of deficient rims (42%) Amplatzer discs must straddle the aorta (riding bareback) Keep discs flared around the aorta to prevent erosion Avoid using a device > 1.5 times the TEE/ICE diameter Watch for encrochment on structures- MV, SVC,RUPV Know the tricks presented for appropriate placement

7. Large ASDs: closure methods
Rotation on delivery sheath Deployment in RUPV Deployment in LUPV Use of alternative sheaths (Mullins, Hausdorf, modified Amplatzer) Use of right coronary catheter Balloon assisted technique Use of dilator as buttress

8. Advanced ASD Closure Deployment in Pulmonary Veins

9. Sheath Tips and Tricks:
NEW AGA TorqVue® Sheath
Hausdorf Sheath (Cook, Inc.)

10. Balloon Assisted Technique
LA disk and sheath pulled toward IAS Waist and RA disk released Balloon gradually deflated During deflation the RA disk was moved toward LA disk by pushing the delivery cable Balloon and guidewire were subsequently removed
Catheter Cardiovasc Interv 2005;64:

11. Challenging Case: Large ASD

12. Large ASD
18 y/o female referred for evaluation of asymptomatic heart murmur Transthoracic echo confirms presence of large ASD with dilation of RA and RV CXR with mild cardiomegaly and shunt vascularity

13. Large ASD
Cardiac cath demonstrates normal right heart pressures and Qp:Qs 3:1
ICE demonstrates large secundum ASD

14. Large ASD

15. Large ASD
Several unsuccessful attempts were made to deploy 28 mm Amplatzer device in conventional manner
Attempts at left PV deployment technique or a Hausedorf Sheath were also unsuccessful secondary to prolapse of LA disc through retro-aortic rim

16. Large ASD

17. Large ASD

18. Large ASD

19. Large ASD

20. Large ASD

21. Large ASD

22. Closure of Multiple ASDs

23. Multiple ASDs
Balloon sizing sequentially (single venous access) or simultaneously (2 venous access)
If simultaneous delivery of 2 devices:
Need two sheaths
Deliver smaller device first
Larger device “sandwich” smaller device
Deliver both devices before release
Reassess entire septum to make sure there is no impingement of device against atrial wall before release (especially in deficient or absent rims) 23 23

24. Multiple ASDs
Occurs in up to 6.6% of ASDs May require multiple devices to close the defects if far enough apart Single device may be adequate for closely spaced defects Occasionally balloon sizing will convert multiple defects into a single defect

25. Multiple ASDs

26. Multiple ASDs

27. Multiple ASDs

28. Multiple ASDs

29. Courtesy Y. Joe Woo, MD
HUP Cardiac Surgery 29

30. Amplatzer “Cribiform” Multi-Fenestrated Atrial Septal Occluder

31. Multiple or Fenestrated Defects
Balloon atrial septostomy- create one large defect- not favored Single large device to close 2 or more defects if < 7 mm away Residual defect persists in follow-up if greater than 7 mm Two device approach is favored- sequential or tandem (requires contra lateral access) Release the smaller device first if using tandem approach Do not use the Cribiform if defect is greater than 4-6mm given possibility of movement

32. Closure performed #25 AGA Cribiform ASO inserted in PFO
#14 AGA Atrial septal occluder for ASD

33. POOR ANATOMIC ASD CANDIDATES:
● Absence of significant posterior rim in defect larger than 1.5 cm:
increased risk of device migration

34. History of Present Illness:
Case Report:
History of Present Illness:
GC is a 68yo male with a long hx of A-fib on coumadin. He has had increasing fatigue and worsening DOE over last several months.
Past Medical Hx:
HTN
A-fib
Gout

35. Case Report cont: ASD History:
Recent murmur appreciated and echo revealed a large secundum ASD with estimated diameter of 27 and 28mm. R-sided chambers were enlarged, mod Pulm HTN was present. MRI ruled out sinus venosus defect with any anomalous pulmonary drainage.
He underwent initial attempt at percutaneous closure at OSH, but defect unsuccessfully closed. Patient referred to Barnes-Jewish for second attempt at percutaneous closure.

43. Later the Same Day…
Patient was transferred to the floor No complaints Routine TTE obtained that night per protocol 911 page sent

44. Echo post-procedure:

45. Echo post-procedure:

46. Later the Same Day….
Though non-emergent CT surgery took patient to OR the same night. Percutaneous extraction considered but concern over thrombus potentional on device sitting in LA so long. Did well post op until day 3.

47. Deficient Posteroinferior Rims
A real challenge as these tend to be larger ASDs MD beware if rim is < 3mm. Increased complication rate- IVC or Pulmonary vein obstruction, encroachment on mitral valve, frank embolization

48. Echo post-surgical repair:

49. Percutaneous Complications:
Device embolization or malposition
Residual shunting
Atrial arrhythmias, heart block, sudden death
Bleeding, groin hematoma
Cardiac perforation, pericardial effusion
Thrombus formation (overall rate 1.2%) More common with CardioSEAL/STARflex than with Amplatzer device
Device erosion (0.1%)