Cardiology Research, ISSN 1923-2829 print, 1923-2837 online, Open Access
Article copyright, the authors; Journal compilation copyright, Cardiol Res and Elmer Press Inc
Journal website https://www.cardiologyres.org

Original Article

Volume 2, Number 6, December 2011, pages 288-292

Can Computer Tomography Predict Compromise of Cardiac Structures After Percutaneous Closure of Interatrial Septal Defects?

Figures

Figure 1.
Figure 1. Echocardiographic documentation that prior to release, no device impingement of the atrial roof by the 20 mm Amplatzer™ device.
Figure 2.
Figure 2. Example of a device in contact but not impinging the aortic wall.
Figure 3.
Figure 3. Device seen indenting the aortic root wall (arrows) by a maximum of 4 mm as computed from the magnified image.
Figure 4.
Figure 4. (a) Correlation between device size and preimplantation balloon measurement; r2 = 0.735. In 6 patients a larger device than would be expected was used because of a large septal aneurysma and/or a cribriform defect. (b) Lack of correlation between device size in millimetres (mm) and variables of compromission. Smallest measurable distance of device edge to left (LA) or right (RA) atrial wall or aorta in mm. Device protrusion into superior vena cava (SVC) in mm. All correlation coefficients r2 < 0.3. (c) Correlation between long axis dimensions of the right atrium in millimetres (mm) and variables of compromission. Smallest measurable distance of device edge to left (LA) or right (RA) atrial wall or aorta in mm. Device protrusion into SVC in mm. Only protrusion into superior vena cava (SVC) correlated moderately with the long axis of the RA (r2 = 0.53).

Tables

Table 1. Clinical Charateristics of Patients (n = 20) After IASC-C
 
Age in yearsGenderFUBMI
BMI: body mass index; FU: followup in months after IASC-C; IASC-C: interatrial septal defect closure.
56.3 ± 8.4 (38-70)16 females20.5 ± 17.6 (6-84)26.5 ± 6.1 (19.5-42.6)

 

Table 2. Dimensions Measured
 
Max DSLA longLA shortRA longRA short
DS: device size in mm (= maximal diameter of the largest disc as indicated by the manufacturer); LA: left atrium; Long: long axis dimension in mm; RA: right atrium; Short: short axis dimension in mm.
30.4 ± 7.4 (18-46)51.6 ± 6 (44-65)34 ± 5.5 (24-46)50.8 ± 5.1 (42-63)50.6 ± 8 (36-64)

 

Table 3. Number of Patients in Whom the Device Impinges Atrial or Aortic Structures or Protrudes in Superior Vena Cava lumen (SVC)
 
ImpingementAortic rootLeft atrial wallRight atrial wallProtrusion in SVC
1.1 ± 1 (0 to 3)0.95 ± 1.6 (-3 to 4)0.6 ± 1 (-1 to 3)3.6 ± 4 (0 to 11)
The degree of contact of the device with the atrial or aortic wall or it’s protrusion in the SVC is given in millimetres (mean ± SD; range).
None-117
Positive1113813
Contact9611-