Cited by 15Congenital Heart Disease StudiesCardiac Arrhythmias and TreatmentsCardiac Valve Diseases and Treatments

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

Computer-assisted navigation applied to fetal cardiac intervention

Abstract

BACKGROUND: Prenatal cardiac interventions (PCI) for human fetal aortic valve (AoV) stenosis can reduce left ventricular hypoplasia and restore ventricular growth and function. However, 'freehand' needle delivery from the maternal skin through the uterine wall, fetal chest and ventricular apex to cross the fetal AoV remains technically challenging and time intensive, and is the rate-limiting step in the procedure. METHODS: We developed a computer-assisted navigation (CANav) system that tracks the position and orientation of a two-dimensional (2D) ultrasound image relative to the trajectory of an electromagnetic (EM) embedded needle and stylet. We tested the CANav system in vitro using a water bath phantom, then in vivo using adult rats and pregnant (fetal) sheep. RESULTS: The CANav system accurately tracked the delivered needle position in both in vitro phantom and adult rat model experiments. We performed 22 PCI attempts with or without CANav in a fetal sheep model. Maternal laparotomy was required to adjust the fetal position in 50% of the procedures. The time required to deliver the needle from the skin into the left ventricle (LV) using CANav was 2.9 +/- 1.7 (range 2-7) min (n = 14) vs. 5.5 +/- 4.3 (range 1-12) min (n = 8) without CANav (p < 0.05). The time needed to cross the aortic valve once the needle was within the LV was similar with and without CANav (p = 0.19). CONCLUSIONS: CANav reduces the PCI time required to accurately deliver a needle to the fetal heart. Adaptations of this technical approach may be relevant to other congenital cardiac conditions and ultrasound-guided medical procedures.

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Crossref · 10.1002/rcs.145

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42 of 42 references verified0 citation errors · 0 not checkable

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  1. 10.1088/0031-9155/48/14/314 · DOI

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Metadata

Authors
Emery, S. P., Kreutzer, J., Sherman, F. R., Fujimoto, K. L., Jaramaz, B., Nikou, C., Tobita, K., & Keller, B. B.
Affiliations
  • University of Pittsburgh (US)
  • Western Pennsylvania Hospital (US)
Corresponding author
Keller, Bradley B.
Venue
The International Journal of Medical Robotics and Computer Assisted Surgery
Publisher
Wiley
Published
2007-08-30
Volume
3
Issue
3
Pages
187-198
ISSN
  • 1478-5951 (ISSN-L)
  • 1478-596X
OpenAlex
W2005138614
Cited by
15
References
41
Citations by year
2023: 1 · 2019: 1 · 2018: 1 · 2016: 2 · 2015: 2 · 2014: 1 · 2012: 2
FWCI
1.15
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Medical Robotics and Computer Assisted Surgery (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Heart, Lung, and Blood Institute (R44HL076961, R43HL076961)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Congenital Heart Disease Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Valve Diseases and Treatments
Keywords
computer-assisted navigation, electromagnetic tracking, ultrasound-guided needle insertion, fetal sheep model, left ventricular hypoplasia, congenital heart disease
MeSH terms
Animals, Aortic Valve Stenosis, Equipment Design, Heart Defects, Congenital, Humans, Needles, Rats, Inbred Lew, Robotics, Cardiovascular Surgical Procedures, Ultrasonography, Prenatal, Ultrasonography, Interventional, Equipment Failure Analysis, Surgery, Computer-Assisted, Rats

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