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Related Experiment Videos

Midtrimester amniocentesis. Influence of operator caseload on sampling efficiency

R K Silver1, T L Russell, M P Kambich

  • 1Division of Maternal-Fetal Medicine, Evanston Hospital, Illinois 60201, USA. r-silver@nwu.edu

The Journal of Reproductive Medicine
|June 6, 1998
PubMed
Summary

Physician experience significantly impacts amniocentesis success. Higher operator caseloads correlate with improved single-pass success rates for both early and standard genetic amniocentesis procedures.

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Area of Science:

  • Medical Science
  • Obstetrics and Gynecology
  • Prenatal Diagnostics

Background:

  • Amniocentesis is a common prenatal diagnostic procedure.
  • Operator experience may influence procedural success rates.
  • Early amniocentesis (13-14 weeks) and standard amniocentesis (15-20 weeks) have different technical considerations.

Purpose of the Study:

  • To investigate the relationship between operator caseload and sampling efficiency in genetic amniocentesis.
  • To determine if operator volume affects success rates in early versus standard amniocentesis.

Main Methods:

  • Prospective study of genetic amniocenteses over 36 months.
  • Procedures were categorized as early or standard gestation.
  • Operator caseload was analyzed in relation to single-pass success rates.

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Main Results:

  • Physicians performing 50 or more procedures had higher single-pass success rates than those performing fewer than 50.
  • This effect was observed for both early and standard amniocentesis.
  • Caseload and ultrasound guidance independently predicted single-attempt success.

Conclusions:

  • Operator caseload is a significant factor influencing amniocentesis sampling efficiency.
  • Higher volume operators demonstrate better success rates in amniocentesis.
  • Findings support the importance of experience in procedural outcomes.