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Central Venous Catheter Insertion: Subclavian Vein08:14

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Central venous access is necessary in a multitude of clinical situations for hemodynamic monitoring, medication delivery, and blood sampling. There are three veins in the body that are accessed for central venous cannulation: the internal jugular, the subclavian, and the femoral vein.
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The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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Catheter Insertion in Subclavian Vein
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Digital venous anatomy.

S H Moss, K S Schwartz, G von Drasek-Ascher

    The Journal of Hand Surgery
    |July 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    This study mapped the venous drainage of the hand, revealing a network of dorsal venous arches and valves directing blood flow. These findings clarify the intricate venous system of the digits and hand.

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    Area of Science:

    • Anatomy
    • Vascular Biology
    • Hand Surgery

    Background:

    • Understanding the venous anatomy of the hand is crucial for surgical procedures and managing vascular conditions.
    • Previous studies have provided limited detail on the specific arrangement and function of venous valves in the digits.

    Purpose of the Study:

    • To comprehensively investigate the venous architecture and valve system of the human digits and hand.
    • To elucidate the directionality of venous blood flow within the hand.

    Main Methods:

    • Utilized nine cadaveric hands for detailed analysis.
    • Employed sequential angiography, microdissection, routine histology, cross-sectional microradiography, and corrosion casting techniques.

    Main Results:

    • Identified dorsal venous arches on each digit, with connections at the metacarpal heads.
    • Discovered intercapitular veins facilitating palmar to dorsal blood flow.
    • Observed a consistent valve system directing flow distally to proximally, palmarly to dorsally, and radially to ulnarly, extending to the pulp.

    Conclusions:

    • The hand possesses a sophisticated venous network with valves ensuring unidirectional blood flow towards the central circulation.
    • These findings enhance our understanding of hand venous anatomy and have implications for reconstructive surgery and vascular treatments.