The nurse is reviewing a patient's electrocardiogram (ECG) tracing. Which of the following are characteristics of normal sinus rhythm (NSR?
QRS interval less than or equal to 0.10 seconds
Heart rate 50-100 bpm
P waves are rounded and inverted, and follow each QRS complex
PR interval 0.34 to 0.43 seconds
The Correct Answer is B
A. The QRS interval may vary but is typically less than 0.12 seconds in normal sinus rhythm.
B. Normal sinus rhythm typically has a heart rate between 50 and 100 beats per minute.
C. In normal sinus rhythm, P waves are typically upright and precede each QRS complex.
D. The PR interval may vary but is typically between 0.12 and 0.20 seconds in normal sinus rhythm.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Older adults with UTIs may present with atypical symptoms such as confusion or acute changes in mental status, known as delirium, rather than classic urinary symptoms. This is often referred to as "geriatric UTI syndrome" and can be the only presenting symptom in some cases.
B. Incontinence can occur in individuals of all ages with UTIs and is not unique to older adults.
C. Urinary retention is not typically associated with UTIs in older adults; instead, they may experience urinary frequency and urgency.
D. Low back pain can occur in individuals of all ages with UTIs and is not unique to older adults.
Correct Answer is B
Explanation
A. Showering is not typically restricted after a splenectomy. Good hygiene practices, including regular showering, are important for preventing infection.
B. Patients who have undergone a splenectomy are at increased risk of infections, particularly from encapsulated bacteria such as Streptococcus pneumoniae. Yearly flu vaccination helps reduce the risk of influenza-related complications.
C. Long-term antibiotic prophylaxis is not routinely recommended for all patients after splenectomy. Antibiotics may be prescribed in certain situations, such as for postsplenectomy sepsis prevention, but lifelong use is not standard practice.
D. Sleeping position is not directly related to infection prevention after splenectomy.
General infection prevention measures, such as vaccination and avoiding exposure to sick individuals, are more important.
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