PDF icon Download PDF
Am J Perinatol 2019; 36(07): 742-750
DOI: 10.1055/s-0038-1673664
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

An Early Investigation into Possible Alternatives to Stapled Hysterotomy in Open Fetal Surgery

Joseph T. Church
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Jennifer S. McLeod
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Megan A. Coughlin
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Ingrid L. Bergin
2   Unit for Laboratory Animal Medicine, University of Michigan, Ann Arbor, Michigan
,
Elena M. Perkins
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Hayley R. Hoffman
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Mark Bilger
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Alvaro Rojas-Peña
1   Extracorporeal Life Support Laboratory, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Marjorie C. Treadwell
3   Department of Obstetrics and Gynecology, Fetal Diagnosis and Treatment Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Deborah R. Berman
3   Department of Obstetrics and Gynecology, Fetal Diagnosis and Treatment Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Marcus D. Jarboe
4   Department of Surgery, Fetal Diagnosis and Treatment Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
George B. Mychaliska
4   Department of Surgery, Fetal Diagnosis and Treatment Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
,
Erin E. Perrone
4   Department of Surgery, Fetal Diagnosis and Treatment Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan
› Author Affiliations
Funding Funding for this project was made possible by Jack L. Berman, MD, and Barbara A. Berman, PhD, Fetal Diagnosis Research Fund at the University of Michigan.
Further Information

Publication History

30 November 2017

24 August 2018

Publication Date:
29 October 2018 (online)

Also available ateRefHebammen
   Permissions and Reprints
Preview

Abstract

Purpose We hypothesized that surgical energy could be used to create hysterotomies in open fetal surgery.

Study Design Initial studies compared the LigaSure Impact and Harmonic ACE + 7 Shears in the efficiency of hysterotomy and thermal damage. Pregnant ewes at an estimated gestational age (EGA) of 116 to 120 days (term = 145; n = 7) underwent hysterotomy using either device. Hysterotomy edges were resected, and thermal injury extent was determined by histopathological assessment. Upon determining a superior device, subsequent studies compared this to the AutoSuture Premium Poly CS*-57 Stapler in uterine healing. Pregnant ewes (n = 6) at an EGA of 87 to 93 days underwent 6-cm hysterotomy in each gravid horn with either the stapler (n = 5) or Harmonic (n = 5) followed by closure and animal recovery. After 37 to 42 days, uterine healing was assessed by evaluating tensile strength and histopathology.

Results Thermal damage was more extensive with the LigaSure (n = 11 hysterotomies) than with the Harmonic (n = 11; 5.6 ± 1 vs. 3.1 ± 0.6 mm; p < 0.0001);therefore, the Harmonic was selected for healing studies. Gross scar appearance and tensile strength were the same between the Harmonic and stapler. The stapler caused more fibrosis (4/7 samples with “moderate” fibrosis vs. 0/8 with the Harmonic; p = 0.02).

Conclusion The Harmonic ACE + 7 caused less thermal injury than the LigaSure Impact and performed similar to the CS*-57 Stapler in uterine healing with continued gestation.

Keywords

hysterotomy - prenatal - Harmonic - LigaSure - AutoSuturePremium Poly CS*-57 Stapler - surgical energy