CNRN CERTIFICATION EXAM – QUESTIONS AND ANSWERS | VERIFIED AND WELL
DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD AND PASS | LATEST
EXAM UPDATE 2026/2027
Core Domains
Neurological Assessment and Diagnostic Procedures
Acute and Chronic Neurological Conditions
Neurocritical Care and Emergencies
Pharmacological and Surgical Interventions
Rehabilitation and Long-Term Management
Ethical, Legal, and Professional Standards
Psychosocial and Family Dynamics
Health Promotion and Patient Education
Introduction
This comprehensive examination is designed to rigorously assess the advanced
knowledge and clinical judgment required of a Certified Neuroscience Registered
Nurse (CNRN). The questions evaluate a candidate's ability to apply foundational
neuroscience theory, interpret complex clinical data, and make critical decisions in a
variety of settings, including acute care, rehabilitation, and community health.
Emphasis is placed on real-world application, ethical reasoning, and understanding
the nuances of patient and family-centered care. The examination utilizes multiple-
choice and scenario-based questions to simulate the challenges encountered in
,professional neuroscience nursing practice, ensuring that the CNRN is prepared to
deliver expert, evidence-based care.
SECTION ONE: QUESTIONS 1-50
1. A patient with a suspected subarachnoid hemorrhage (SAH) presents with a
sudden, severe "thunderclap" headache and nuchal rigidity. Which diagnostic
study is the initial test of choice to confirm the diagnosis?
A. Computed Tomography (CT) scan of the head without contrast
B. Magnetic Resonance Imaging (MRI) with angiography
C. Lumbar puncture for cerebrospinal fluid (CSF) analysis
D. Cerebral angiography
🟢 Correct Answer: A. Computed Tomography (CT) scan of the head without
contrast
🔴 Explanation: A non-contrast CT scan of the head is the initial diagnostic test of
choice for SAH due to its high sensitivity in detecting acute blood in the
subarachnoid space. MRI and angiography are secondary or specialized tests, and a
lumbar puncture is used if the CT is negative but clinical suspicion remains high.
2. When performing a neurological assessment on a patient with a right-sided
cerebrovascular accident (CVA), which finding would the nurse most likely
observe?
,A. Aphasia and right-sided hemiparesis
B. Left-sided neglect and left-sided hemiparesis
C. Aphasia and left-sided hemiparesis
D. Right-sided neglect and right-sided hemiparesis
🟢 Correct Answer: B. Left-sided neglect and left-sided hemiparesis
🔴 Explanation: A right-sided CVA typically affects the left side of the body due to
the decussation of motor and sensory tracts in the brainstem. It is also associated
with left-sided neglect and other visuospatial deficits, as these functions are often
localized to the right parietal lobe. Aphasia is more common with left-sided CVA.
3. A patient is prescribed phenytoin (Dilantin) for seizure management. Which of
the following is a critical nursing action related to the administration of this
medication?
A. Administer the medication with milk to increase absorption.
B. Monitor serum drug levels routinely to maintain a therapeutic range.
C. Administer the medication intramuscularly for rapid onset.
D. Encourage the patient to take the medication only when a seizure is imminent.
🟢 Correct Answer: B. Monitor serum drug levels routinely to maintain a therapeutic
range.
🔴 Explanation: Phenytoin has a narrow therapeutic window and can be toxic or
subtherapeutic; monitoring serum levels is essential to ensure efficacy and prevent
toxicity. It should not be given with milk (which can alter absorption), is not typically
given IM due to risk of tissue damage, and must be taken consistently to maintain
therapeutic levels, not just during seizures.
, 4. A nurse is caring for a patient with Guillain-Barré syndrome (GBS). What is the
priority assessment to prevent the most serious complication of this disorder?
A. Pain management
B. Respiratory function and vital capacity
C. Nutritional status
D. Skin integrity
🟢 Correct Answer: B. Respiratory function and vital capacity
🔴 Explanation: The most serious complication of GBS is respiratory failure due to
ascending paralysis affecting the diaphragm and intercostal muscles. Monitoring
vital capacity and respiratory effort is the top priority. While pain management,
nutrition, and skin integrity are important, they are secondary to the life-threatening
risk of respiratory compromise.
5. Which of the following is the earliest sign of increased intracranial pressure
(ICP) that the nurse should monitor for in a patient with a traumatic brain injury
(TBI)?
A. Decreased level of consciousness (LOC)
B. Cushing's triad (hypertension, bradycardia, irregular respirations)
C. Pupillary dilation and fixation
D. Decerebrate posturing
🟢 Correct Answer: A. Decreased level of consciousness (LOC)
🔴 Explanation: A change in LOC is the earliest and most sensitive indicator of
increasing ICP. Cushing's triad, pupillary changes, and abnormal posturing are late
DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD AND PASS | LATEST
EXAM UPDATE 2026/2027
Core Domains
Neurological Assessment and Diagnostic Procedures
Acute and Chronic Neurological Conditions
Neurocritical Care and Emergencies
Pharmacological and Surgical Interventions
Rehabilitation and Long-Term Management
Ethical, Legal, and Professional Standards
Psychosocial and Family Dynamics
Health Promotion and Patient Education
Introduction
This comprehensive examination is designed to rigorously assess the advanced
knowledge and clinical judgment required of a Certified Neuroscience Registered
Nurse (CNRN). The questions evaluate a candidate's ability to apply foundational
neuroscience theory, interpret complex clinical data, and make critical decisions in a
variety of settings, including acute care, rehabilitation, and community health.
Emphasis is placed on real-world application, ethical reasoning, and understanding
the nuances of patient and family-centered care. The examination utilizes multiple-
choice and scenario-based questions to simulate the challenges encountered in
,professional neuroscience nursing practice, ensuring that the CNRN is prepared to
deliver expert, evidence-based care.
SECTION ONE: QUESTIONS 1-50
1. A patient with a suspected subarachnoid hemorrhage (SAH) presents with a
sudden, severe "thunderclap" headache and nuchal rigidity. Which diagnostic
study is the initial test of choice to confirm the diagnosis?
A. Computed Tomography (CT) scan of the head without contrast
B. Magnetic Resonance Imaging (MRI) with angiography
C. Lumbar puncture for cerebrospinal fluid (CSF) analysis
D. Cerebral angiography
🟢 Correct Answer: A. Computed Tomography (CT) scan of the head without
contrast
🔴 Explanation: A non-contrast CT scan of the head is the initial diagnostic test of
choice for SAH due to its high sensitivity in detecting acute blood in the
subarachnoid space. MRI and angiography are secondary or specialized tests, and a
lumbar puncture is used if the CT is negative but clinical suspicion remains high.
2. When performing a neurological assessment on a patient with a right-sided
cerebrovascular accident (CVA), which finding would the nurse most likely
observe?
,A. Aphasia and right-sided hemiparesis
B. Left-sided neglect and left-sided hemiparesis
C. Aphasia and left-sided hemiparesis
D. Right-sided neglect and right-sided hemiparesis
🟢 Correct Answer: B. Left-sided neglect and left-sided hemiparesis
🔴 Explanation: A right-sided CVA typically affects the left side of the body due to
the decussation of motor and sensory tracts in the brainstem. It is also associated
with left-sided neglect and other visuospatial deficits, as these functions are often
localized to the right parietal lobe. Aphasia is more common with left-sided CVA.
3. A patient is prescribed phenytoin (Dilantin) for seizure management. Which of
the following is a critical nursing action related to the administration of this
medication?
A. Administer the medication with milk to increase absorption.
B. Monitor serum drug levels routinely to maintain a therapeutic range.
C. Administer the medication intramuscularly for rapid onset.
D. Encourage the patient to take the medication only when a seizure is imminent.
🟢 Correct Answer: B. Monitor serum drug levels routinely to maintain a therapeutic
range.
🔴 Explanation: Phenytoin has a narrow therapeutic window and can be toxic or
subtherapeutic; monitoring serum levels is essential to ensure efficacy and prevent
toxicity. It should not be given with milk (which can alter absorption), is not typically
given IM due to risk of tissue damage, and must be taken consistently to maintain
therapeutic levels, not just during seizures.
, 4. A nurse is caring for a patient with Guillain-Barré syndrome (GBS). What is the
priority assessment to prevent the most serious complication of this disorder?
A. Pain management
B. Respiratory function and vital capacity
C. Nutritional status
D. Skin integrity
🟢 Correct Answer: B. Respiratory function and vital capacity
🔴 Explanation: The most serious complication of GBS is respiratory failure due to
ascending paralysis affecting the diaphragm and intercostal muscles. Monitoring
vital capacity and respiratory effort is the top priority. While pain management,
nutrition, and skin integrity are important, they are secondary to the life-threatening
risk of respiratory compromise.
5. Which of the following is the earliest sign of increased intracranial pressure
(ICP) that the nurse should monitor for in a patient with a traumatic brain injury
(TBI)?
A. Decreased level of consciousness (LOC)
B. Cushing's triad (hypertension, bradycardia, irregular respirations)
C. Pupillary dilation and fixation
D. Decerebrate posturing
🟢 Correct Answer: A. Decreased level of consciousness (LOC)
🔴 Explanation: A change in LOC is the earliest and most sensitive indicator of
increasing ICP. Cushing's triad, pupillary changes, and abnormal posturing are late
