A microsurgical technique for catheter insertion in the rat femoral artery

Kazuhisa Sugai, Yoji Hakamata, Tomoyoshi Tamura, Masaharu Kataoka, Masahiko Fujisawa, Motoaki Sano, Eiji Kobayashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Purpose: To modify a surgical catheterization method using the bent needle introducer in small animals. Methods: Eight-week-old male Lewis rats were used in the study. A needle introducer was created by bending a 21G injection needle at 45°. The bent needle introducer was used for catheter insertion into the left femoral artery of the rats under anesthesia. As a control, a catheter was directly inserted into the blood vessel without the introducer. The insertion time of each method was measured. Blood pressure and heart rate were measured 24 h after catheter insertion using the telemetry system. Results: Using the introducer, the catheter was successfully inserted within a short time in all rats. Without the introducer, a longer duration was required for catheter insertion. The frequency of the insertion with no catheter-based errors with the introducer tended to be higher than that without the introducer. The mean arterial pressure and heart rate 24 h after catheter insertion in each group were almost the same. Conclusions: We developed a surgical catheterization method using the introducer in small animals. This could potentially reduce the frequency of the insertion with catheter-based errors and insertion time.

Original languageEnglish
Article numbere202001004
Pages (from-to)1-8
Number of pages8
JournalActa Cirurgica Brasileira
Volume35
Issue number10
DOIs
Publication statusPublished - 2020

Keywords

  • Catheterization
  • Microsurgery
  • Rats
  • Telemetry
  • Vital Signs

ASJC Scopus subject areas

  • Surgery

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