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Related Experiment Videos

Catheter optimization during contrast ventriculography: a prospective randomized trial.

K G Lehmann1, J C Yang, R J Doria

  • 1Section of Cardiology, Long Beach, Veterans Administration Medical Centers, Calif.

American Heart Journal
|May 1, 1992
PubMed
Summary

An angled pigtail catheter improves left ventriculography by offering easier insertion and better image quality compared to straight catheters. This technique enhances diagnostic yield and reduces procedure time, making it a preferred choice for cardiologists.

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Area of Science:

  • Cardiovascular Imaging
  • Interventional Cardiology
  • Medical Device Technology

Background:

  • Left ventriculography is crucial for diagnosing cardiac conditions.
  • Image quality in left ventriculography depends on catheter choice and injection technique.
  • Newer contrast agents improve hemodynamic stability but not necessarily diagnostic yield.

Purpose of the Study:

  • To compare the efficacy of straight versus angled pigtail catheters in left ventriculography.
  • To evaluate the impact of catheter design on image quality, ease of use, and procedural efficiency.
  • To assess complications associated with each catheter type.

Main Methods:

  • Prospective randomized study of 125 patients undergoing left ventriculography.
  • Comparison between a straight pigtail catheter and an angled pigtail catheter (145-degree bend).

Related Experiment Videos

  • Injectate composition, flow rate, and volume were standardized.

    • Main Results:

    • The angled catheter demonstrated superior ease of insertion (p=0.038) and positioning (p=0.012), saving mean fluoroscopy time.
    • Angled catheters provided better contour edge definition (p=0.037) and a trend toward more uniform contrast distribution (p=0.089).
    • Fewer instances of artifactual mitral regurgitation (p=0.038) were observed with the angled catheter, with similar rates of ventricular arrhythmias.

    Conclusions:

    • Angled pigtail catheters offer significant advantages over straight catheters for left ventriculography.
    • Improved catheter positioning and image quality contribute to enhanced diagnostic yield.
    • The angled design may reduce procedural complications and fluoroscopy time.