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Ductus arteriosus morphology in duct-dependent pulmonary circulation: CT classification and pattern in different

Haifa Abdul Latiff1, Anu Ratha Gopal1, Zul Febrianti Hidayat1

  • 1PCHC Department, Institut Jantung Negara, 145, Jalan Tun Razak, Kuala Lumpur, 50400, Malaysia.

Cardiology in the Young
|January 18, 2023
PubMed

Insights

The morphology of the ductus arteriosus varies in duct-dependent pulmonary circulation. CT angiography reveals distinct patterns based on ventricle anatomy, aiding in pre-procedural planning for ductal stenting.

Area of Science:

  • Cardiovascular Imaging
  • Pediatric Cardiology
  • Congenital Heart Disease

Background:

  • Duct-dependent pulmonary circulation requires specific anatomical evaluation.
  • Understanding ductus arteriosus morphology is crucial for managing congenital heart defects.
  • CT angiography offers detailed visualization of complex cardiac anatomy.

Purpose of the Study:

  • To investigate the morphology of the ductus arteriosus in infants with duct-dependent pulmonary circulation.
  • To analyze ductus arteriosus patterns in relation to different ventricular morphologies.
  • To assess the utility of CT angiography in characterizing ductal anatomy.

Main Methods:

  • CT angiography was performed on 114 infants (≤6 months) with duct-dependent pulmonary circulation.
  • Ductus arteriosus origin, tortuosity, and insertion were analyzed.
  • Classification into types I, IIa, IIb, and III based on origin from descending aorta, distal arch, proximal arch, or subclavian artery, respectively.

Main Results:

  • Type II ductus arteriosus (61.2%) was most common, originating from the distal arch.
  • Tortuous ductus arteriosus was observed in 32.7%, frequently associated with single ventricle lesions.
  • Pulmonary atresia with intact ventricular septum predominantly showed Type I non-tortuous ductus arteriosus.

Conclusions:

  • Ductus arteriosus morphology is diverse in duct-dependent pulmonary circulation, with distinct patterns related to ventricular morphology.
  • CT angiography is valuable for pre-procedural planning and case selection for ductal stenting.
Abstract

Keywords:
CTDuctus arteriosus morphologyduct-dependent pulmonary circulation

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