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 D
Explanation
A. Heat application may provide comfort for localized pain but does not address the underlying cause of hypercalcemia, which requires systemic management.
B. While rest may be beneficial for certain conditions, it does not directly address hypercalcemia. Encouraging mobility and adequate fluid intake is typically more effective.
C. Coughing and deep breathing exercises are important for preventing respiratory complications after surgery but are not relevant for managing hypercalcemia.
D. Increasing fluid intake promotes hydration and enhances urinary calcium excretion, helping to lower serum calcium levels and minimize complications associated with hypercalcemia
Correct Answer is C
Explanation
A. This meal is high in fat, which may be poorly tolerated after a cholecystectomy, as it can exacerbate symptoms such as diarrhea and abdominal discomfort.
B. This meal is high in fat and may be difficult to digest after a cholecystectomy.
Whole milk can also be rich in fat, which may not be well tolerated.
C. This meal is lower in fat and includes easily digestible foods such as roast turkey and rice, which are generally well tolerated after a cholecystectomy. Gelatin dessert provides a light and refreshing option for dessert without adding excess fat.
D. This meal is high in fat, which may be poorly tolerated after a cholecystectomy, as it can exacerbate symptoms such as diarrhea and abdominal discomfort.
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