Page 14 - Journal of Structural Heart Disease Volume 5, Issue 4

Meeting Abstracts
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the level of LDL by working on the receptor and dilute or we can say dissolve the obstruction in the artery and pre- vent cardiac disease and help the patient to survive. It is basically used as solid dosage from oral route. In liquid dosage form it can be given intravenously to the patient. The action time in oral rout is around 20-25 minutes while intravenously action takes place in 5-7 minutes.
Summary: We find that there is decrease in LDL level in the body as it is good lowering agent as well as it has anti- oxidant property, also does not cause any type of gastric irritation.
Conclusion: There is decrease in level of LDL, so I think it should be used as medicine for patient.
5. ACCURACY OF 3D PRINTED MODELS OF THE RIGHT VENTRICULAR OUTFLOW TRACT: IMPLICATIONS FOR INTERVENTIONAL PLANNING
Animesh Tandon1,2, Surendranath Veeram Reddy3,2, Nicholas Brown3,2, Paige McKenzie3,2, Barbara Burkhardt3,4, Song Zhang5, Rami Hallac6, Alex Kane6, Sana Ullah7, Gerald Greil1,2, Tarique Hussain1,2
1Departments of Pediatrics (Cardiology); Radiology; UT Southwestern Medical Center, Dallas, USA. 2Children's Medical Center Dallas, Dallas, USA. 3Department of Pediatrics, UT Southwestern Medical Center, Dallas, USA. 4Pediatric Cardiology, Pediatric Heart Center, Department of Surgery, University Children’s Hospital Zurich, Zurich, Switzerland. 5Department
of Clinical Sciences, UT Southwestern Medical Center, Dallas, USA. 6Department of Plastic Surgery, UT Southwestern, Dallas, USA. 7Department of Anesthesiology and Pain Management, UT Southwestern, Dallas, USA
Background: Three-dimensional printed models (3DPMs) are used to plan percutaneous pulmonary valve implantation, but their accuracy is not well-characterized. We assessed the accuracy of 3DPMs of right ventricular outflow tracts (RVOTs) of patients with congenital heart disease.
Methods and Results: We used magnetic resonance angiograms from patients with RVOT disease and created 3D stereolithography (STL) files. These files were sent
to 4 different 3D printers. The 3DPMs were optically scanned to create 3D digital models. We compared dimensions measured on anterior-posterior (AP) and lateral patient cardiac catheterization angiogram (CCA) projections to the models, created idealized diameters from 2D dimensions of the digital models, and compared the volumes and spatial overlaps of the 3D models.
We considered linear dimensions clinically equivalent if the 95% confidence intervals of the difference of the dimensions was <1 mm.
Twenty-six patients were included. The AP projection dimensions on models from all 4 3D printers were >1 mm larger than CCA dimensions, while the lateral dimensions were not larger. Dimensions derived from 2D dimensions were clinically similar to CCA dimensions. There were sig- nificant differences in spatial overlap and model volumes between printers.
Conclusions: We show that there are differences in dimensions between CCA and 3DPMs. The 3DPMs can be different from source data both in size and shape. There are limitations to both 1D measurements on CCA images and measurements on digital representations of 3D objects. We suggest that when using 3D prints for clinical purposes, it is important to understand their strengths and limitations.
6. INITIAL AND MEDIUM-TERM FOLLOW-UP RESULTS OF STENT IMPLANTATION OF PATENT DUCTUS ARTERIOSUS IN DUCT-DEPENDENT PULMONARY CIRCULATION (PULMONARY ATRESIA VARIANTS) Hani Mahmoud Adel, MD
Pediatric Cardiology Unit, Department of Pediatrics, Alexandria University,Alexandria , Egypt
University of Alexandria Children's Hospital, Alexandria, Egypt
Objective: To study the initial and medium-term results of patent ductus arteriosus (PDA) stenting in cyanotic con- genital heart disease with duct-dependant pulmonary circulation (DPC), in the Alexandria University Children’s Hospital.
Background: PDA stenting has been proposed as an alter- native to surgical shunt on account of postoperative com- plications and mortality. The initial results of PDA stenting have been discouraging. However, with improvement in coronary stent design and delivery systems, the results of PDA stenting became promising.
Patients and Methods: Babies with PDA-dependent pul- monary circulation in our NICU or referred to our unit were offered an attempt of PDA stenting after written informed parental consent. The study was conducted on 58 cases from 2010 through 2018.
Results: The mean age of the patients was 22.9 ± 21.4 days and mean weight 3.1 ± 0.7 kg. The mean length of
Journal of Structural Heart Disease, August 2019
Volume 5, Issue 4:75-205