Pediatrics & Neonatology
Volume 51, Issue 1 , Pages 52-56, February 2010

Immediate Echocardiographic Surveillance After Transcatheter Closure of a Patent Ductus Arteriosus: A Feasible Method to Assess Residual Shunt

  • Chi-Di Liang

      Affiliations

    • Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
    • Corresponding Author InformationCorresponding author. Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung, Kaohsiung 833, Taiwan
    • ,
  • Sheung-Fat Ko

      Affiliations

    • Department of Radiology, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
    • ,
  • Chien-Fu Huang

      Affiliations

    • Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
    • ,
  • Shao-Ju Chien

      Affiliations

    • Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
    • ,
  • Ying-Jui Lin

      Affiliations

    • Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
    • ,
  • I-Chun Lin

      Affiliations

    • Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
    • ,
  • Mao-Meng Tiao

      Affiliations

    • Department of Pediatrics, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan

Received 9 February 2009; received in revised form 3 July 2009; accepted 31 July 2009.

Article Outline

Background

To evaluate the feasibility of echocardiography after transcatheter closure of patent ductus arteriosus (PDA) with coils.

Methods

Between April 1998 and December 2006, 131 patients had transcatheter coil occlusion of their PDA using Gianturco coils. We hypothesized that post-procedural hemolysis would not occur if a residual shunt < 1 mm or if no continuous waveform was detected by echocardiography. Immediately after coil implantation, patients without and with a residual shunt as detected by echocardiography were designated to groups A and B, respectively. The clinical presentations, laboratory data and outcomes were compared between the two groups.

Results

There were 101 patients in group A and 30 patients in group B. Patients in group B had larger ductal diameter (2.8 ± 0.9 mm vs. 1.6 ± 0.8 mm; p < 0.001), larger Qp/Qs (1.9 ± 0.9 vs. 1.3 ± 0.4; p = 0.001), higher frequency of more than one coil used (14/30 vs. 11/101; p < 0.001), and female predominance (22/30 vs. 53/101; p = 0.043) compared with group A. Trivial residual shunt was noted in 6 patients in group A and 20 patients in group B on the day after embolization. All shunts spontaneously closed within 6 months in patients of group A, while five patients in group B had a persistent shunt at the 1-year follow-up and thereafter. Although the patients in group B had higher residual shunt rate than group A during follow-up (p < 0.001), none of these patients suffered from hemolysis.

Conclusion

Echocardiography is a feasible tool to assess residual shunt after PDA closure. If a residual shunt < 1 mm or if no continuous waveform is detected by echocardiography, the risk of developing hemolysis is low.

Key Words:  coil , echocardiography , hemolysis , patent ductus arteriosus , residual shunt

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References 

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PII: S1875-9572(10)60010-1

doi:10.1016/S1875-9572(10)60010-1

Pediatrics & Neonatology
Volume 51, Issue 1 , Pages 52-56, February 2010

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