Evaluation and Management of Hemodynamically Stable Abdominal Penetrating/Blunt Trauma


Algorithm: Evaluation & management of hemodynamically stable abdominal penetrating/blunt trauma

Must-Know Essentials: Anatomy of the Abdomen

Surface Anatomy

  • External abdomen extends from the diaphragm to the infragluteal fold.

  • Divided into:

    • anterior abdomen

    • posterior abdomen

    • intrathoracic abdomen

    • flank.

  • Anterior abdomen

    • Extension

      • Superior: Transverse line through bilateral fourth intercoastal space (nipple level)

      • Inferior: Bilateral inguinal ligament

      • Lateral: Bilateral posterior axillary line

    • Divided into:

      • upper abdomen:

        • Extends between nipple line to transpyloric line (imaginary horizontal line between the suprasternal notch and the superior border of pubic symphysis)

        • Further divided into:

          • right hypochondrium

          • epigastrium

          • left hypochondrium.

      • Mid abdomen:

        • Extends between transpyloric line to intertubercular line (line between iliac tubercles)

        • Further divided into:

          • right flank

          • umbilical region

          • left flank.

      • Lower abdomen:

        • Extends between the intertubercular line and the inguinal ligaments

        • Further divided into:

          • right groin

          • hypogastric (suprapubic) region

          • left groin.

  • Posterior abdomen

    • Extension

      • Superior: Transverse line through the eighth intercostal space (angle of the scapula)

      • Inferior: Bilateral infragluteal fold

      • Lateral: Bilateral posterior axillary line

  • Intrathoracic abdomen

    • Extension

      • Superior: Transverse line through bilateral fourth intercoastal space (nipple level)

      • Inferior: Bilateral costal margins

      • Lateral: Area between the anterior and posterior axillary lines extending from the sixth intercostal space superiorly and costal margins inferiorly

      • Posterior: Area between eighth intercostal space (angle of the scapula superiorly to costal margins inferiorly)

  • Flank: Area between midclavicular line and posterior axillary line extending from the costal margin superiorly to the iliac crest inferiorly

Intraabdominal Structures

  • Intraperitoneal

    • Supramesocolic (above the mesentery of the transverse colon) structures

      • Liver

      • Stomach

      • Spleen

    • Inframesocolic sutures

      • Small intestine and its mesentery

      • Transverse colon and mesocolon

      • Uterus

  • Retroperitoneal (see illustration)

    • Supramesocolic (above the mesentery of the transverse colon) structures

      • Duodenum

      • Pancreas

      • Suprarenal midline vessels

    • Inframesocolic structures

      • Infrarenal midline vessels

      • Bilateral kidneys

      • Bilateral ureters

      • Urinary bladder

      • Ascending colon

      • Descending colon

      • Upper 2/3 of the rectum

      • Cervix

Must-Know Essentials: Mechanism of Injury and Organs Involved

  • Blunt trauma

    • Most common cause of injury

    • Mechanism

      • Compression

      • Crushing

      • Shearing

      • Deceleration

  • Penetrating trauma

    • Low energy

    • High energy

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