Sugai K, Hakamata Y, Tamura T, Kataoka M, Fujisawa M, Sano M, Kobayashi E. A microsurgical technique for catheter insertion in the rat femoral artery.
Acta Cir Bras 2020;
35:e202001004. [PMID:
33237176 PMCID:
PMC7709899 DOI:
10.1590/s0102-865020200100000004]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 09/18/2020] [Indexed: 11/22/2022] Open
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.
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