NR 341 Week 6 Complex Intracranial – Neurological Alterations

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Chamberlain University

NR-341 Complex Adult Health

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Date

Week 6 EDAPT Notes: Complex Care NR 341

Complex Intracranial – Neurological Alterations

Intracranial regulation is the body’s ability to maintain equilibrium between blood flow and cerebrospinal fluid (CSF) circulation in the brain and spinal cord. This regulation depends on delicate nerve pathways that sense changes in pressure and adjust accordingly to sustain homeostasis. When injuries or pathological conditions disturb this balance, the nervous system may try to compensate; however, medical intervention is often required when compensation becomes insufficient.

For instance, if a client’s mean arterial pressure (MAP) is 120 mm Hg and intracranial pressure (ICP) is 42 mm Hg, the cerebral perfusion pressure (CPP) can be determined using the formula:

CPP = MAP – ICP = 120 – 42 = 78 mm Hg.

When ICP rises significantly, the nurse should recognize Cushing’s triad (bradycardia, irregular respirations, and widening pulse pressure), which signals potential cerebral herniation. Additional symptoms may include bloody ear drainage suggesting skull fracture and clammy skin below the neck, which can indicate autonomic dysreflexia.

To evaluate a client’s neurological status, the Glasgow Coma Scale (GCS) is widely used, measuring eye, verbal, and motor responses. Since intracranial volume consists of brain tissue, CSF, and blood, any alterations in these components can impact ICP. While the body compensates through mechanisms like CSF shifting and blood vessel constriction, persistent imbalances require advanced monitoring and care.

Altered Intracranial Regulation

Altered intracranial regulation occurs when unexpected changes—such as lesions, edema, or hemorrhage—modify intracranial volume. These changes may develop slowly, as in brain tumors, or rapidly, as in cerebral edema caused by trauma or infection.

Monitoring techniques for ICP include insertion of catheters, drains, and specialized devices. These allow clinicians to manage CSF volume, induce therapeutic comas, or apply mechanical ventilation to reduce ICP. The most serious complication is herniation, where excessive ICP forces brain tissue downward, compressing the brainstem and potentially causing death.

Normal Ranges of Intracranial Parameters:

Parameter	Normal Range
Mean Arterial Pressure (MAP)	70 – 100 mm Hg
Intracranial Pressure (ICP)	5 – 15 mm Hg
Cerebral Perfusion Pressure (CPP)	60 – 80 mm Hg

Methods of ICP Monitoring:

Method	Description	Advantages	Limitations
Intraventricular Catheter	Inserted into lateral ventricle; allows CSF drainage and accurate readings	Gold standard; drainage capability	Risk of infection, invasive
Subdural Screw/Bolt	Hollow screw in subdural space	Quick to place	Cannot drain CSF
Epidural Sensor	Positioned between skull and dura	Minimally invasive	Less accurate; no drainage option

In addition to pressure monitoring, clinicians may assess cerebral oxygenation, blood flow, metabolism, and continuous EEG activity. Ongoing research continues to refine these strategies to optimize patient outcomes.

Spinal Cord Injury

Spinal cord injuries (SCI) represent another form of severe neurological alteration requiring urgent intervention. The spinal cord, extending from the brainstem to the lumbar vertebrae, is highly vulnerable to trauma. Injuries may involve bruising, puncture, or complete transection.

Damage at different levels leads to varied consequences:

Cervical injuries often impair respiratory function.
Injuries above T6 may disrupt cardiovascular regulation, leading to bradycardia or hypotension.
Thoracic injuries frequently cause bowel and bladder dysfunction, including retention and constipation.

Spinal Nerve Divisions:

Cervical (cervic/o)
Thoracic (thorac/o)
Lumbar (lumb/o)
Sacral (sacr/o)
Coccygeal (coccyg/o)

Acute Spinal Cord Injury

The extent of neurological impairment depends on the injury’s severity and location. A complete severing results in permanent paralysis, whereas bruising may cause temporary deficits such as paresthesia.

Impact of SCI by Injury Level:

Injury Level	Description	Effects
C1–C3	High quadriplegia	Inability to breathe or cough
C4	High quadriplegia	Significant respiratory compromise
C6	Low quadriplegia	Mild respiratory impairment
T6	High paraplegia	Cardiovascular instability; GI symptoms
L1	Low paraplegia	Bladder and bowel dysfunction

Risk Factors from Client History

Nurses must evaluate multiple history components to identify potential causes of altered neurological regulation.

Key Considerations:

Category	Examples of Risk Factors
Past Medical History	Head trauma, hematomas, stroke, meningitis, osteoporosis
Past Surgical History	Brain or spinal surgeries
Family History	Seizures, Parkinson’s, Huntington’s chorea
Social History	Anoxia (near-drowning), head/spine trauma, exposure to neurotoxins
Medications	Antiseizure drugs, anticoagulants, psychotropics, serotonin-inducing drugs

Lifestyle factors like smoking, substance use, and unsafe work practices also elevate risk.

Symptoms of Complex Neurological Problems

Level of Consciousness

Altered consciousness
Confusion and disorientation
Memory impairment

Brain-Connected Nerve Issues

Blurred or double vision
Hearing loss
Anosmia (loss of smell)
Difficulty swallowing or tasting
Limited neck or shoulder mobility

Movement and Sensation

Paralysis
Paresthesia
Abnormal reflexes

Pain Symptoms

Headaches
Limb pain

Respiratory and Circulatory Function

Breathing difficulties
Cushing’s triad
Bradycardia

Elimination and Reproductive Function

Urinary or bowel incontinence/retention
Erectile dysfunction, anorgasmia

Level of Consciousness Assessment: Glasgow Coma Scale (GCS)

Response Category	Scale	Points
Eye Opening	Spontaneous	4
	To verbal	3
	To pain	2
	None	1
Verbal Response	Oriented	5
	Confused	4
	Inappropriate words	3
	Incomprehensible	2
	None	1
Motor Response	Obeys commands	6
	Localizes pain	5
	Withdraws	4
	Flexion	3
	Extension	2
	None	1

A score of 15 reflects full consciousness, while lower scores indicate impaired neurological function.

Primary Nursing Diagnosis and Evaluation

Diagnosis	Nursing Evaluation
Acute confusion	Client oriented to person, place, time, situation
Decreased intracranial adaptive capacity	GCS = 15 (full consciousness)
Ineffective thermoregulation	Temperature stable between 36.6–37.7°C
Impaired memory	Demonstrates recall of short- and long-term memory
Autonomic dysreflexia	No symptoms present
Altered perfusion	Adequate cerebral perfusion maintained
Impaired mobility	Normal reflexes, balanced gait, no paresthesia
Pain	Pain reported as tolerable and controlled

Secondary Nursing Diagnosis and Evaluation

Diagnosis	Nursing Evaluation
Altered perfusion	MAP remains 60–100 mm Hg
Reduced cardiac output	MAP sustained 65–100 mm Hg
Impaired airway clearance	Airway remains unobstructed
Altered gas exchange	O₂ saturation > 92%; RR 12–20
Constipation	Regular bowel movements maintained
Urinary retention	Output > 30 mL/hr; no residual
Incontinence	Skin remains dry and intact
Altered tissue integrity	Skin intact, no lesions
Altered nutrition	Albumin > 3.5 g/dL

Prevention and Public Health Perspective

According to the National Spinal Cord Injury Statistics Center (2020), around 300–400 new spinal cord injuries occur annually. Approximately 75% of these cases stem from motor vehicle crashes, falls, firearms, or motorcycle accidents. Preventive strategies include:

Enforcement of road safety measures (speed limits, seatbelts, airbags).
Workplace safety interventions (fall prevention gear, harnesses).
Stronger firearm control policies.
Increased use of protective gear for motorcyclists and athletes.

Causes of Spinal Cord Injury

Spinal cord injuries (SCI) arise from various traumatic and non-traumatic events. According to epidemiological data, the majority of spinal cord injuries are associated with motor vehicle accidents, followed by falls and acts of violence. A breakdown of the most frequent causes is shown below.

Table 1

Primary Causes of Spinal Cord Injury

Cause	Percentage (%)
Automobile crash	32.0
Falls	23.1
Gunshot wounds	15.2
Motorcycle crashes	6.1
Diving accidents	5.7
Medical complications	2.9
Hit by falling/flying objects	2.7
Bicycle-related injuries	1.7
Pedestrian injuries	1.5

Post-injury mortality is typically not caused by the trauma itself but rather by secondary complications. The most common causes of death in individuals with SCI are diseases of the respiratory system (21.4%), infectious or parasitic diseases (12%), neoplasms (10.8%), and heart disease (10.4%). These findings highlight the importance of ongoing monitoring and prevention strategies in long-term care.

Acute Care Considerations for Spinal Cord Injury

In acute care, the priority nursing responsibilities are maintaining airway, breathing, and circulation. Immobilization of the spine is essential to prevent further cord compression or damage.

Older adults with spinal cord or head injuries may present unique challenges. Their symptoms can overlap with age-related changes or dementia, making accurate diagnosis more complex. A thorough review of medical and medication history helps differentiate injury-related alterations from pre-existing conditions. Certain medications, particularly anticoagulants, increase bleeding risks, and activities like shaving or walking barefoot may exacerbate the likelihood of injury. Additionally, unwitnessed falls should be treated as potentially life-threatening until ruled out.

NR 341 Week 6 Complex Intracranial – Neurological Alterations

In younger clients, altered intracranial regulation often results from congenital or traumatic conditions, such as spina bifida, cerebral palsy, or hydrocephalus. Birth history, developmental milestones, and prior head injuries are essential elements to assess.

For example, Angela Everheart, a 57-year-old female admitted to the emergency department, presented with a Glasgow Coma Scale (GCS) score of 4, decerebrate posturing, unequal right pupil dilation, widening blood pressure, bradycardia, and absent respirations. These findings are consistent with elevated intracranial pressure and impending herniation.

Table 2

Glasgow Coma Scale Scoring

Category	Response Description	Points
Eye Opening	Spontaneous	4
	To verbal stimuli	3
	To pain only	2
	No response	1
Verbal	Oriented	5
	Confused conversation	4
	Inappropriate words	3
	Incomprehensible sounds	2
	No response	1
Motor	Obeys commands	6
	Localizes pain	5
	Withdraws from pain	4
	Flexion (decorticate posturing)	3
	Extension (decerebrate posturing)	2
	No response	1

Respiratory arrest, abnormal pupils, widened pulse pressure, and bradycardia indicate increased intracranial pressure. Nursing care should focus on emergency interventions such as airway support, oxygen therapy, and reduction of intracranial pressure.

Nursing Diagnosis and Potential Actions

Table 3

Nursing Diagnoses, Assessment Cues, and Actions

Nursing Diagnosis	Assessment Cues	Nursing Actions
Decreased intracranial adaptive capacity	Reduced consciousness, cranial nerve deficits	Elevate HOB >30°, hyperventilation, assist with CSF drainage procedures.
Altered perfusion	Unstable mean arterial pressure	Administer antihypertensives as prescribed.
Impaired airway clearance	Inability to maintain airway	Reposition airway structures, suction PRN, prepare emergency airway equipment.
Altered gas exchange	Hypoxemia, reduced respirations	Administer oxygen, initiate mechanical ventilation if needed.

Priority of Actions (High to Low):

Reposition head, neck, and jaw to maintain airway.
Establish an airway with emergency equipment if independent breathing fails.
Begin artificial ventilation.
Administer oxygen as ordered.
Administer antihypertensive medications.
Elevate the head of the bed to decrease intracranial pressure.

References

National Spinal Cord Injury Statistical Center. (2020). Facts and figures at a glance. University of Alabama at Birmingham. https://www.nscisc.uab.edu/

Patel, M., & McKean, J. (2022). Neurological emergencies: Pathophysiology and management. Critical Care Nursing Quarterly, 45(2), 145–156. https://doi.org/10.1097/CNQ.0000000000000419

NR 341 Week 6 Complex Intracranial – Neurological Alterations

Smith, R., Johnson, L., & Thomas, K. (2021). Monitoring intracranial pressure in acute care settings. Journal of Neuroscience Nursing, 53(4), 181–189. https://doi.org/10.1097/JNN.0000000000000602