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Related Experiment Videos

Persistent left superior vena cava.

Saju Binu Cherian1, B R Ramesh, Sampath Madhyastha

  • 1Department of Anatomy, Melaka Manipal Medical College, Manipal, Karnataka, India.

Clinical Anatomy (New York, N.Y.)
|December 24, 2005
PubMed
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A persistent left superior vena cava, a rare congenital venous anomaly, was identified during anatomical dissection. This finding is clinically significant for procedures like cardiac catheterization.

Area of Science:

  • Anatomy
  • Embryology
  • Vascular Biology

Background:

  • Congenital venous anomalies are common and can have significant clinical implications.
  • The superior vena cava (SVC) is a major vein that returns deoxygenated blood from the upper body to the heart.
  • Developmental variations in venous structures are crucial to understand for medical interventions.

Observation:

  • A routine cadaveric dissection revealed an example of a persistent left superior vena cava (PLSVC).
  • The anomalous vein was traced to its termination directly into the right atrium.
  • The same cadaver also exhibited four distinct branches arising from the aortic arch.

Findings:

  • The persistent left superior vena cava represents a remnant of embryonic venous development that typically regresses.

Related Experiment Videos

  • The presence of a PLSVC can alter venous drainage pathways.
  • Associated aortic arch anomalies were also noted in this case.

    • Implications:

    • Persistent left superior vena cava has critical implications for cardiovascular procedures, particularly cardiac catheterization.
    • Misidentification or unawareness of a PLSVC during catheterization can lead to complications.
    • Understanding these anatomical variations is essential for interventional cardiologists and surgeons.