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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Related Questions
Correct Answer is ["A","C","E"]
Explanation
A. Dysuria, or painful urination, is a common symptom of a urinary tract infection (UTI) due to irritation of the urinary tract lining by bacteria.
B. While strong-smelling urine can occur with a UTI, it's not specific to UTIs and can have other causes. Ammonia-smelling urine can be indicative of a UTI, especially if accompanied by other symptoms such as dysuria or frequency.
C. Increased frequency of urination can be a symptom of a UTI as the body attempts to flush out the bacteria causing the infection.
D. Amber urine color can result from concentrated urine due to dehydration but is not specific to a UTI.
E. Urinary urgency, or a sudden and compelling need to urinate, can be a symptom of a UTI due to irritation of the bladder lining by bacteria
Correct Answer is D
Explanation
A. Energy drinks containing caffeine can exacerbate palpitations and should be avoided.
B. Alcohol, including red wine, can trigger or worsen palpitations and should be limited or avoided.
C. Potassium-rich foods are not typically associated with palpitations. In fact, maintaining normal potassium levels is important for heart health.
D. Caffeine can trigger palpitations in susceptible individuals, so switching to decaffeinated coffee may help reduce symptoms.
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