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      Calc Function

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    Patent Pending

    CHIP (CT in Head Injury Patients) Prediction Rule

    Predicts intracranial traumatic CT findings in patients with minor head trauma.

    INSTRUCTIONS

    Use in patients at least 16 years old presenting within 24 hours of blunt head trauma and GCS 13–14 (or GCS 15 with at least one of the following: LOC, short-term memory deficit, amnesia, seizure, vomiting, severe headache, intoxication, anticoagulant use or history of coagulopathy, external evidence of injury above the clavicles, neurologic deficit). Note: We recommend using the Canadian CT Head Rule over other adult head trauma decision rules, as it is the most widely validated.

    When to Use

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    <40 years
    40-60 years
    ≥60 years
    No
    Yes
    None
    1 point
    ≥2 points
    None
    Skull contusion
    Any injury suggesting skull fracture, e.g. palpable discontinuity of skull, CSF leakage, raccoon eyes, bleeding from ear
    None
    2 to <4 hr
    ≥4 hr
    No
    Yes
    No
    Yes
    No
    Yes
    No
    Yes
    No
    Yes
    No
    Yes
    No
    Yes
    No
    Yes
    No
    Yes

    Result:

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    Next Steps
    Evidence
    Creator Insights
    Dr. Marion Smits

    About the Creator

    Marion Smits, MD, is an associate professor and neuroradiologist at Erasmus University Medical Center in Rotterdam, Netherlands. She is the principal investigator of applied physiological MR neuroimaging, focusing on the non-invasive, in vivo visualization of brain function. Dr. Smits is also an honorary consultant and reader at University College London Hospital NHS Foundation Trust in London.

    To view Dr. Marion Smits's publications, visit PubMed

    Are you Dr. Marion Smits? Send us a message to review your photo and bio, and find out how to submit Creator Insights!
    MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients.
    About the Creator
    Dr. Marion Smits
    Are you Dr. Marion Smits?