The nurse is caring for a client who is two weeks post-op hip replacement and has a wound infection. The client's admission vital signs are: Temperature 102 F (38.8 C) orally, HR 150/min (rhythm is shown below). Respiratory rate- 22/min, and Blood pressure is 128/72. Based on these assessment findings, the nurse understands that the client:
surgery has caused an episode of supraventricular tachycardia.
is febrile which is causing the heart rate to be elevated.
is in heart failure and the heart rate is elevated to compensate.
probably has a low oxygen saturation causing an increased respiratory rate.
The Correct Answer is B
A. surgery has caused an episode of supraventricular tachycardia: While stress or surgery can trigger arrhythmias, the ECG shown demonstrates a sinus tachycardia pattern (narrow QRS complexes with identifiable P waves before each QRS), not supraventricular tachycardia (SVT), which typically has a very rapid, regular rhythm often without visible P waves.
B. is febrile which is causing the heart rate to be elevated: The client has a temperature of 102°F (38.8°C), which can increase metabolic demand and lead to sinus tachycardia. Fever is a common and expected cause of elevated heart rate, especially when accompanied by infection, such as the client’s post-op wound infection.
C. is in heart failure and the heart rate is elevated to compensate: There is no evidence from the scenario (no dyspnea, crackles, edema, or reduced BP) that supports heart failure. The elevated HR is more directly related to the fever and infection, not cardiac decompensation.
D. probably has a low oxygen saturation causing an increased respiratory rate: The respiratory rate is slightly elevated (22/min), but there is no mention of hypoxia or oxygen saturation levels. Tachycardia secondary to hypoxia would require clinical indicators of respiratory distress or desaturation, which are not demonstrated.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. The TEE evaluates if emboli are present if cardioversion is required: A transesophageal echocardiogram (TEE) provides detailed imaging of the heart’s chambers, particularly the left atrium and left atrial appendage, where clots often form in atrial fibrillation. It is used to rule out thrombi before cardioversion to reduce the risk of stroke during the procedure.
B. The study will use electric current to stop the abnormal conduction pathway: This describes electrical cardioversion, not TEE. TEE is a diagnostic imaging procedure and does not involve the delivery of electrical currents to modify the heart's rhythm or conduction.
C. A TEE will help restore the client's underlying baseline normal rhythm: TEE does not treat arrhythmias. Its role is diagnostic—to visualize cardiac structures, not to restore normal rhythm. Cardioversion or pharmacologic agents are required to correct atrial fibrillation.
D. A TEE is required prior to implantable defibrillator placement in clients with atrial fibrillation: TEE is not routinely required before implantable cardioverter-defibrillator (ICD) placement. ICD decisions are usually based on ejection fraction, rhythm stability, and risk of sudden cardiac arrest, not the presence or absence of atrial thrombi.
Correct Answer is A
Explanation
A. Atrial fibrillation: Atrial fibrillation is characterized by an irregularly irregular rhythm, absence of identifiable P waves, and an unmeasurable PR interval. The ventricular rate can vary (in this case, 92/min), and QRS duration is usually normal. These findings match the classic ECG criteria for atrial fibrillation.
B. Sinus bradycardia: Sinus bradycardia features a regular rhythm, visible P waves before each QRS, and a rate below 60 bpm. The client's rate is 92 and the rhythm is irregular, ruling out this option.
C. Supraventricular tachycardia: SVT typically presents with a regular, rapid rhythm, often over 150 bpm, and P waves may be hidden in the preceding T wave. The client’s rate is 92 with an irregular rhythm, which does not fit SVT.
D. First-degree heart block: First-degree AV block is defined by a prolonged PR interval (>0.20 seconds) with otherwise normal sinus rhythm. In this case, the PR interval is unmeasurable and the rhythm is irregular, making this diagnosis unlikely.
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