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: 0.10 seconds.
Based upon this information, the nurse should interpret the client’s rhythm as indicating which of the following?
Supraventricular tachycardia.
Atrial fibrillation.
Sinus bradycardia.
First-degree heart block.
The Correct Answer is B
Choice A rationale
Supraventricular tachycardia (SVT) is characterized by a rapid heart rate originating above the ventricles, typically with a regular rhythm and identifiable P waves. The described ECG strip shows an irregular rhythm and an inability to identify P waves, which is not consistent with SVT5.
Choice B rationale
Atrial fibrillation (AF) is characterized by an irregularly irregular rhythm, absence of identifiable P waves, and variable PR intervals. The ECG findings of an irregular rhythm, inability to identify P waves, and a QRS duration of 0.10 seconds are consistent with AF6.
Choice C rationale
Sinus bradycardia is characterized by a regular rhythm with a heart rate less than 60 beats per minute and identifiable P waves preceding each QRS complex. The described ECG strip shows an irregular rhythm and an inability to identify P waves, which is not consistent with sinus bradycardia.
Choice D rationale
First-degree heart block is characterized by a prolonged PR interval with a regular rhythm. The described ECG strip shows an irregular rhythm and an inability to measure the PR interval, which is not consistent with first-degree heart block.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
8 oz black tea is not recommended for clients with iron deficiency anemia as it contains tannins, which can inhibit iron absorption.
Choice B rationale
1 cup canned black beans is a good source of non-heme iron, which can help improve iron levels and alleviate fatigue associated with iron deficiency anemia.
Choice C rationale
8 oz whole milk is not a good source of iron and can interfere with the absorption of iron from other foods.
Choice D rationale
15 oz raisins contain some iron but are not as rich in iron as black beans. Additionally, the high sugar content in raisins may not be ideal for all clients.
Correct Answer is A
Explanation
Choice A rationale
Disseminated intravascular coagulation (DIC) is caused by abnormal coagulation involving fibrinogen. In DIC, there is widespread activation of the coagulation cascade, leading to the formation of small blood clots throughout the bloodstream. This process consumes clotting factors and platelets, increasing the risk of severe bleeding.
Choice B rationale
DIC is not a genetic disorder involving a vitamin K deficiency. It is typically a secondary condition resulting from other underlying issues such as sepsis, trauma, or malignancy. Vitamin K deficiency can lead to bleeding disorders, but it is not the cause of DIC13.
Choice C rationale
DIC is characterized by a decreased platelet count, not an elevated one. The consumption of platelets and clotting factors in the formation of microthrombi leads to thrombocytopenia and an increased risk of bleeding.
Choice D rationale
DIC is not controllable with lifelong heparin usage. While heparin may be used in certain cases to manage DIC, it is not a lifelong treatment. The management of DIC focuses on treating the underlying cause and supporting the patient through the acute phase of the disorder.
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