Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
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    • Numerical inputs and outputsFormula
    • Med treatment and moreTreatment
    • Suggested protocolsAlgorithm





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    Appendicitis (beta)

    Official guideline from the American College of Emergency Physicians.

    Summary by Eric Steinberg, DO
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    Risk Stratification
    1. In patients with suspected acute appendicitis, use clinical findings (ie, signs and symptoms) to risk-stratify patients and guide decisions about further testing (eg, no further testing, laboratory tests, and/or imaging studies), and management (eg, discharge, observation, and/or surgical consultation).
    1. In adult patients undergoing a computed tomography (CT) scan for suspected appendicitis, perform abdominal and pelvic computed tomography scan with or without contrast (intravenous [IV], oral, or rectal). The addition of intravenous and oral contrast may increase the sensitivity of the computed tomography scan for the diagnosis of appendicitis.
    2. In children, use ultrasound to confirm acute appendicitis but not to definitively exclude acute appendicitis.
    3. In children, use an abdominal and pelvic computed tomography (CT) to confirm or exclude acute appendicitis.
    4. Given the concern over exposing children to ionizing radiation, consider using ultrasound as the initial imaging modality. In cases in which the diagnosis remains uncertain after ultrasound, computed tomography (CT) may be performed.
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    Research PaperHowell JM, Eddy OL, Lukens TW, et al. American College of Emergency Physicians. Clinical Policy: Critical Issues in the Evaluation and Management of Emergency Department Patients With Suspected Appendicitis. Ann Emerg Med. 2010;55(1):71-116.