Which of the following are nursing priorities for a child with severe traumatic brain injury (TBI)?
Elevate the head of bed to 15-30°.
Maintain a quiet environment.
Monitor for changes in level of consciousness.
Use seizure precautions.
Administer D5W maintenance intravenous fluids for hydration.
Correct Answer : A,B,C,D
Choice A rationale
Elevating the head of bed (HOB) to 15-30° promotes optimal cerebral venous drainage, which assists in reducing intracranial pressure (ICP). Maintaining cerebral perfusion pressure is critical in traumatic brain injury (TBI) to prevent secondary injury from ischemia. This specific elevation angle balances ICP reduction with maintenance of adequate cerebral blood flow. Normal ICP ranges from 5-15 mmHg in children.
Choice B rationale
A quiet, low-stimulus environment minimizes external stimuli that can trigger noxious responses and subsequently increase intracranial pressure (ICP) in a child with severe TBI. Sensory input processing requires cerebral energy and can exacerbate existing cerebral edema or injury. Reducing environmental stress supports cerebral metabolic rest and neuroprotection.
Choice C rationale
Monitoring for changes in the level of consciousness (LOC) is the most sensitive indicator of neurological status and potential deterioration in a TBI patient. A declining LOC, assessed using the Glasgow Coma Scale (GCS), can signal increasing intracranial pressure (ICP) or secondary brain injury. Prompt recognition allows for timely medical or surgical intervention to preserve neurological function.
Choice D rationale
Severe TBI increases the risk for post-traumatic seizures due to focal injury, cerebral edema, or hemorrhage disrupting normal cortical electrical activity. Seizure precautions, including padding side rails and ensuring airway safety, are mandatory to prevent injury and manage potential epileptic events. Prophylactic antiepileptic medications may also be initiated based on injury severity.
Choice E rationale
Administering D5W (dextrose 5% in water) as maintenance fluid is generally contraindicated in severe TBI. This hypotonic solution can rapidly shift free water into the injured, often edematous, brain tissue, potentially worsening cerebral edema and increasing intracranial pressure (ICP). Isotonic or hypertonic solutions are preferred to maintain euvolemia and serum osmolality.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","D","E"]
Explanation
Choice A rationale
Cyanosis, a bluish discoloration of the skin and mucous membranes, indicates significant hypoxemia (low oxygen saturation) and is a sign of severe, life-threatening asthma exacerbation, not a mild to moderate presentation. In mild to moderate asthma, the body can usually compensate to maintain adequate tissue oxygenation despite airway constriction and inflammation.
Choice B rationale
Chest tightness is a subjective but common symptom in asthma, resulting from the bronchoconstriction and smooth muscle spasm that narrow the airways. The sensation is often described as a band around the chest, reflecting the increased work of breathing and the mechanical effort required to move air through the restricted bronchial passages.
Choice C rationale
An asthma cough is typically non-productive (dry) or, if secretions are present, it is often a mucoid, tenacious sputum. A consistently productive cough suggests other underlying conditions, such as infection (e.g., pneumonia) or bronchiectasis, rather than being the hallmark of a primary, mild-to-moderate asthma flare.
Choice D rationale
Wheezing, a high-pitched whistling sound, is the classic objective sign of asthma, caused by the vibration of air attempting to move rapidly through the severely narrowed, obstructed small airways (bronchioles) during respiration. It is often most prominent on expiration but can be present on inspiration during a significant episode.
Choice E rationale
Prolonged expiration occurs because the narrowed, inflamed airways obstruct the outflow of air, leading to air trapping and a higher residual volume. The patient must forcefully and slowly push air out against the resistance, making the expiratory phase last significantly longer than the inspiratory phase, a key sign of obstructive lung disease.
Correct Answer is ["A","C","E"]
Explanation
Choice A rationale
Drooling is a hallmark sign of epiglottitis because the severe inflammation and swelling of the epiglottis make swallowing extremely painful. The child is reluctant to swallow their saliva, which pools in the mouth and causes characteristic drooling, indicating a critical impending airway obstruction.
Choice B rationale
A barking cough, often described as a "seal-like" cough, is the classic presentation of croup (laryngotracheobronchitis), which involves subglottic inflammation. Epiglottitis, in contrast, primarily involves supraglottic inflammation, leading to a blocked, or muffled, vocalization rather than the resonant, inspiratory stridor and cough of croup.
Choice C rationale
A muffled or "hot potato" voice is highly suggestive of epiglottitis. The swollen epiglottis and surrounding supraglottic structures impede the air column and vocal cord vibration, altering the quality of speech but allowing air to pass, unlike the near-complete aphonia seen in other laryngeal obstructions.
Choice D rationale
Wheezing is a high-pitched whistling sound typically heard on expiration, caused by the narrowing of the lower airways (bronchi/bronchioles), common in conditions like asthma or bronchiolitis. Epiglottitis is a supraglottic obstruction, manifesting predominantly as inspiratory stridor, not wheezing.
Choice E rationale
The tripod position (sitting upright, leaning forward with the neck hyperextended and chin thrust out) is adopted by children with epiglottitis to maximize the patency of the swollen airway and facilitate breathing. This is a sign of significant respiratory distress and impending airway failure.
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