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Bacterial flora in acute small bowel obstruction

S Gupta, K R Reddy, S C Sanyal

    Chemotherapy
    |January 1, 1980
    PubMed
    Summary
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    Bacterial growth in small bowel obstruction is complex. Factors beyond ingestion, including retrograde spread from the large bowel, contribute to bacterial dissemination and potential peritoneal contamination.

    Area of Science:

    • Gastroenterology
    • Microbiology
    • Surgical Pathology

    Background:

    • Acute small bowel obstruction (SBO) presents a significant clinical challenge.
    • Understanding the bacterial dynamics within the obstructed small bowel is crucial for patient management.
    • Previous studies have not fully elucidated the sources of bacterial overgrowth in SBO.

    Purpose of the Study:

    • To investigate the bacterial flora at various levels of the small bowel in patients with acute SBO.
    • To identify potential sources and mechanisms of bacterial dissemination in SBO.

    Main Methods:

    • Direct sampling techniques were employed to analyze bacterial flora.
    • Samples were collected at multiple levels within the small bowel in 25 cases of acute SBO.
    • Peritoneal fluid was analyzed in 8 cases with long-standing obstruction.

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    Main Results:

    • Coliform bacteria were detected in the distal ileum below the obstruction.
    • Bacterial counts progressively increased from the jejunum towards the distal ileum proximal to the obstruction.
    • Indirect peritoneal contamination was observed in cases of long-standing SBO.

    Conclusions:

    • Bacterial overgrowth in acute SBO is likely multifactorial.
    • Ingestion is not the sole contributor; retrograde spread from the large bowel, lymphatic, and hematogenous routes may play significant roles.
    • These factors contribute to bacterial dissemination within and around the obstructed bowel, potentially leading to complications.