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Surgical setup · General

Rectal Exam Under Anesthesia (EUA)

While the patient is under general or regional anesthesia to ensure sphincter relaxation, the surgeon performs an intensive manual and visual inspection of the anal canal and rectum. This allows for the assessment of pathologies such as fistulae, fissures, or neoplasms that cannot be fully evaluated in an awake patient.

Official Updated Sep 2, 2026 9 instruments 3 photos

Surgical instruments

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The case

A Rectal Exam Under Anesthesia (EUA) is a medical procedure in which a healthcare provider examines the rectum and surrounding structures while the patient is under general or local anesthesia. This procedure is typically performed when a thorough examination cannot be completed during a standard rectal exam due to pain, discomfort, or other limitations. It allows the doctor to evaluate conditions such as tumors, abscesses, fistulas, hemorrhoids, or other abnormalities in a more detailed and pain-free way. It is often used for diagnostic purposes, to plan surgery, or to assess treatment outcomes for rectal or anal conditions. The anesthesia ensures patient comfort and allows the physician to perform a comprehensive and careful examination.

Spark notes

The 30-second rundown — scan this outside the room.

Administer regional or general anesthesia, place the patient in lithotomy position with stirrups or Yellofin holders, and use Betadine prep solution. Drape the patient accordingly, considering the lithotomy position, and be prepared to assist in holding a retractor if needed. Insert a lubricated rectal speculum (Hill Ferguson or Pratt) for visualization. Assist with retraction if using a non-self-retaining retractor. Ensure availability of rectal speculums, sponge sticks, Debakeys pickups, toothed forceps, and a yankauer for suction. Confirm the need for a sigmoidoscope and necessary lighting equipment. If a sigmoidoscope is preferred, check for the use of gas and ensure availability of a light cord with a light source. Remove drapes, and wash off Betadine or prep solution using a wet towel or lap.

Walkthrough

What the surgeon does — and what to have in your hand before they ask.

  1. Preoperative Preparation

    Ensure the patient is either given a regional anesthetic or general anesthesia, placing them in the lithotomy position using stirrups or Yellofin leg holders. Utilize Betadine as a standard prep solution for colorectal surgery. Drape the patient with lithotomy drapes and, if applicable, pass off the ends of the suction and cautery to the circulator. Note that these items may not be needed for a digital rectal exam (DRE), typically performed in an office setting but occasionally required in the operating room.

  2. Patient Draping

    Proceed with draping the patient appropriately for the procedure, keeping in mind the lithotomy position.

  3. Initial Examination

    The surgeon begins the examination by inserting a lubricated rectal speculum, such as a Hill Ferguson or Pratt, into the rectum. This speculum facilitates continuous visualization throughout the case. If a self-retaining retractor is not used, the surgical technologist or another scrubbed-in individual may need to assist in holding the retractor. The surgeon visually inspects and palpates for any abnormalities, potentially making a diagnosis. In cases where consent is obtained, the surgeon may address and correct fissures or hemorrhoids during the same anesthesia period.

  4. Instrumentation for Examination

    Ensure the availability of essential instruments for a straightforward rectal exam. These include the specified rectal speculums, sponge sticks with raytecs for cleaning and visualization, Debakeys pickups, toothed forceps, and a yankauer for suction. Confirm the surgeon's preference regarding the use of a sigmoidoscope for visualization and secure its availability before the patient enters the operating room. If a sigmoidoscope is used, be prepared with a light cord and a light source to illuminate the rectum.

  5. Sigmoidoscope Considerations

    In cases where the surgeon opts for a sigmoidoscope, inquire about the use of gas during the procedure. Ensure the availability of necessary equipment, such as a light cord with a light source, to adequately illuminate the rectum during the examination.

  6. Postoperative Cleanup

    Upon completion of the rectal exam, remove the drapes and wash off the Betadine or other prep solution from the patient. Use a wet towel or lap for this purpose, ensuring a thorough and efficient cleanup.

From the field

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