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","B","C"]
Explanation
A. Painless lymphadenopathy, especially in the cervical, supraclavicular, or mediastinal areas, is a hallmark feature of Hodgkin lymphoma, reflecting the disease's characteristic pattern of lymph node involvement.
B. Pruritis can occur in Hodgkin lymphoma, and can either be focal or generalized.
C. Generalized feelings of discomfort, fatigue, or unease are common in Hodgkin lymphoma due to the effects of the disease on the immune system, as well as potential systemic symptoms such as fever, night sweats, and weight loss.
D. While cough can occur in advanced stages of Hodgkin lymphoma, it is not a defining clinical manifestation and is more commonly associated with respiratory infections or complications.
E. Fever is one of the B symptoms which are associated with Hodgkin Lymphoma.
However, the fever is often low-grade and can be associated with Pel-Ebstein fever which is intermittent fever periods with high temperature followed by afebrile periods.
Correct Answer is C
Explanation
A. Nylon underwear can trap moisture and promote bacterial growth, increasing the risk of UTIs. Cotton underwear is recommended for better ventilation.
B. Delaying voiding can increase the risk of UTIs by allowing bacteria to multiply in the bladder. Voiding regularly and completely is important for flushing out bacteria.
C. Cranberry juice contains compounds that may help prevent UTIs by preventing bacteria from adhering to the urinary tract lining.
D. Douching can disrupt the natural balance of bacteria in the vagina and increase the risk of UTIs and other infections.
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