A nurse is analyzing a client's electrocardiogram (ECG) strip and identifies the following information:
Heart rate: 92/min
Rhythm: Irregular
P wave: Unable to identify
PR interval: Unable to measure
QRS duration: O. 1 0 seconds
Based upon this information, the nurse should interpret the client's rhythm as indicating which of the following?
Atrial fibrillation
Sinus bradycardia
Supraventricular tachycardia
First-degree heart block
The Correct Answer is A
A. Atrial fibrillation: Atrial fibrillation is characterized by an irregularly irregular rhythm, absence of identifiable P waves, and irregular ventricular response. The heart rate in atrial fibrillation can be variable, and the absence of identifiable P waves indicates disorganized atrial electrical activity.
B. Sinus bradycardia: Sinus bradycardia is characterized by a regular rhythm with a heart rate less than 60 beats per minute (bpm) and normal P waves preceding each QRS complex. In sinus bradycardia, the PR interval and QRS duration are typically within normal limits.
C. Supraventricular tachycardia: Supraventricular tachycardia (SVT) is characterized by a regular rhythm with a heart rate greater than 100 bpm. SVT typically presents with narrow QRS complexes and may or may not have discernible P waves.
D. First-degree heart block: First-degree heart block is characterized by a prolonged PR interval (>0.20 seconds) but maintains a regular rhythm with normal QRS duration. In first-degree heart block, P waves are typically identifiable, and the rhythm is not irregular.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D","E"]
Explanation
A. Weight loss:
Weight loss can occur in individuals with dementia due to various factors, including decreased appetite, difficulty eating or swallowing, and increased energy expenditure.
Monitoring weight regularly can help detect changes in nutritional status and identify potential health concerns, such as malnutrition or dehydration.
B. Decreased mobility:
Individuals with dementia may experience a decline in mobility and functional abilities as the disease progresses.
Monitoring changes in mobility, such as difficulty walking, transferring, or performing activities of daily living, is important for assessing functional decline and implementing appropriate interventions to maintain mobility and prevent complications such as falls.
C. Increased physical activity:
While dementia can lead to decreased physical activity in some individuals, others may exhibit increased restlessness or wandering behaviors.
Monitoring changes in physical activity levels can help identify agitation, restlessness, or wandering behaviors that may require intervention to ensure the safety and well-being of the individual with dementia.
D. Unkempt appearance:
Individuals with dementia may neglect personal hygiene and grooming tasks, leading to an unkempt appearance.
Monitoring changes in appearance, such as poor personal hygiene, disheveled clothing, or neglect of grooming habits, can indicate difficulties with self-care and may necessitate assistance or supervision to maintain hygiene and appearance.
E. Constipation:
Constipation is a common gastrointestinal symptom in individuals with dementia, often due to factors such as reduced fluid intake, decreased physical activity, and side effects of medications.
Monitoring bowel habits and addressing constipation promptly can help prevent discomfort, complications such as fecal impaction, and maintain overall gastrointestinal health in individuals with dementia.
Correct Answer is ["C","D","E"]
Explanation
A. Respiratory rate of 12/min: A respiratory rate of 12/min is within the normal adult range (12-20 breaths per minute). In the context of increased intracranial pressure (ICP), respiratory rate changes might be noted as part of the Cushing's reflex (which is characterized by bradycardia, hypertension, and abnormal respiratory patterns like Cheyne-Stokes or ataxic breathing), but a rate of 12/min on its own is not indicative of a worsening condition. However, if the patient begins to show signs of irregular or abnormal breathing patterns, this would raise concern.
B. Blood pressure of 108/74 mm Hg: This blood pressure is also within the normal range and does not suggest a worsening of intracranial pressure. In fact, ICP can lead to a rise in blood pressure (due to the body's compensatory mechanisms, known as Cushing's triad), along with bradycardia and abnormal respirations. Thus, a stable blood pressure like 108/74 mm Hg is not concerning in this context.
C. Changes to pupil size and shape: Changes in pupil size, shape, or reactivity are significant indicators of worsening intracranial pressure. Unequal pupils (anisocoria), sluggish or absent response to light, and fixed dilated pupils are signs of brainstem compression or damage, which often occur as ICP increases. This could indicate herniation or severe brain injury, which are worsening conditions.
D. Swelling of the optic nerve: Swelling of the optic nerve, or papilledema, is another important sign of increased intracranial pressure. It occurs due to increased pressure within the skull, which causes congestion and swelling of the optic disc. This finding can be seen on fundoscopy and indicates a worsening condition, as it suggests elevated pressure affecting the brain.
E. Decreasing Glasgow Coma scores: A decreasing Glasgow Coma Scale (GCS) score is a critical indicator of worsening neurologic function in a patient with increased ICP. The GCS is used to assess a patient's level of consciousness, and a decreasing score suggests that the brain's function is deteriorating. This can be caused by worsening edema, brain herniation, or other severe neurological impairments associated with elevated ICP.
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