The nurse caring for a client with a closed head injury obtains an intracranial pressure (ICP) reading of 12 mmHg. The nurse recognizes that?

Appeared in: DHS 2018 shift 1st

Explanation

An intracranial pressure (ICP) of 12 mmHg falls within the normal physiological range for an adult, which is 5 to 15 mmHg.
This normal reading indicates that the pressure within the cranial vault is currently stable and does not require immediate, acute medical intervention.
While no immediate action is needed for this specific value, the standard of care for a patient with a closed head injury requires continuous monitoring of ICP trends and overall neurological status.

Option A: An ICP of 12 mmHg is not considered elevated. Intracranial hypertension, which requires physician notification, is typically defined as a sustained pressure of 20 mmHg or higher.
Option C: An ICP of 12 mmHg is a normal value, not a low one. Intracranial hypotension (low ICP) is a different clinical problem. Administering extra IV fluids without a specific indication could be dangerous as it might increase cerebral edema and raise the ICP.
Option D: This statement is false. ICP monitoring provides a direct, quantitative, and highly reliable measurement of pressure. The Glasgow Coma Scale (GCS) assesses the level of consciousness. They are both crucial and reliable tools that provide different, complementary data for a complete neurological assessment.

Clinical Relevance

Nursing practice connection: Use the key finding related to Interpretation of Intracranial Pressure (ICP) values to guide bedside assessment, documentation, and the next nursing action.
A single normal ICP reading is reassuring, but the trend over time is more clinically significant. A gradual increase from 8 to 12 to 16 mmHg over a few hours is a major warning sign that requires intervention.
Nurses must always correlate ICP values with the patient's complete clinical picture, including GCS score, pupillary response, motor function, and vital signs.
What if? If the ICP reading was 22 mmHg, this would indicate intracranial hypertension. The nurse's priority would be to immediately implement measures to lower ICP (e.g., ensuring head-of-bed elevation, maintaining neutral neck alignment, administering prescribed osmotic diuretics) and notify the physician urgently.

How to Approach the Question

First, identify the key clinical value provided in the question: an ICP of 12 mmHg in a patient with a closed head injury.
Second, recall the normal physiological range for ICP in an adult, which is 5-15 mmHg.
Third, compare the given value to the normal range. A value of 12 mmHg falls squarely within this normal range.
Fourth, evaluate each option based on this classification. The correct option must accurately reflect the status of a normal ICP reading.
Finally, eliminate options that incorrectly classify the value as high or low, or that make false comparisons between different essential assessment tools like ICP and GCS.

Concept Tested & Keywords

Concept Tested: Interpretation of Intracranial Pressure (ICP) values
Stem keywords: closed head injury, intracranial pressure (ICP), 12 mmHg
Lead-in keywords: recognizes that
Clinical cues: The patient has a closed head injury, which is a primary risk factor for developing increased ICP.

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E6 Nursing Brunner Adult Health 3SA Vol 2 Part 2 pp. 29-31, 37-39

Practise the full DHS 2018 shift 1st

Attempt every question from this paper in a timed mock, then review the full solution for each one.