The nurse is caring for a patient on a telemetry unit who has a regular heart rhythm and rate of 60 beats/min; a P wave precedes each QRS complex, and the PR interval is 0.20 seconds. Additional vital signs are: blood pressure 118/68 mm Hg, respiratory rate 16 breaths/min, and temperature 98.8°F (37°C). All of these medications are available on the medication record. What action will the nurse take?
Continue to monitor.
Administer clonidine.
Administer atropine.
Administer digoxin.
The Correct Answer is A
Choice A Reason:
Continuing to monitor is the most appropriate action in this scenario. The patient has a regular heart rhythm and a heart rate of 60 beats per minute, which is within the normal range for sinus bradycardia. The PR interval is 0.20 seconds, which is at the upper limit of normal. The patient’s vital signs are stable, with a blood pressure of 118/68 mm Hg, a respiratory rate of 16 breaths per minute, and a temperature of 98.8°F (37°C). There are no signs of hemodynamic instability or symptoms that would necessitate immediate intervention. Therefore, ongoing monitoring is sufficient to ensure the patient’s condition remains stable.
Choice B Reason:
Administering clonidine is not appropriate in this situation. Clonidine is an antihypertensive medication that can lower blood pressure and heart rate. Given that the patient’s blood pressure and heart rate are within normal ranges, administering clonidine could potentially cause hypotension and bradycardia, leading to adverse effects. Therefore, clonidine is not indicated for this patient.
Choice C Reason:
Administering atropine is not necessary for this patient. Atropine is used to treat symptomatic bradycardia, where the heart rate is abnormally slow and causing symptoms such as dizziness, hypotension, or syncope. In this case, the patient’s heart rate is 60 beats per minute, which is within the normal range for sinus bradycardia, and there are no symptoms indicating the need for atropine. Therefore, atropine is not required.
Choice D Reason:
Administering digoxin is also not appropriate. Digoxin is a cardiac glycoside used to treat heart failure and certain types of arrhythmias, such as atrial fibrillation. It can slow the heart rate and increase the force of cardiac contractions. In this scenario, the patient does not have any indications for digoxin therapy, such as heart failure or atrial fibrillation, and their heart rate is already within the normal range. Therefore, digoxin is not indicated.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D"]
Explanation
Choice A reason: A buffalo hump is a characteristic sign of Cushing’s syndrome. It refers to the accumulation of fat on the back of the neck and shoulders. This symptom occurs due to the excessive production of cortisol, which leads to abnormal fat distribution in the body.
Choice B reason: Moon face is another hallmark of Cushing’s syndrome. It describes the rounding and fullness of the face, which results from fat deposits. This symptom is also caused by prolonged exposure to high levels of cortisol.
Choice C reason: Hypertension, or high blood pressure, is commonly associated with Cushing’s syndrome. Cortisol increases blood pressure by enhancing the sensitivity of blood vessels to catecholamines and by promoting sodium and water retention.
Choice D reason: Purple striations, or stretch marks, are often seen in individuals with Cushing’s syndrome. These marks typically appear on the abdomen, thighs, breasts, and arms. They result from the thinning of the skin and the breakdown of collagen due to elevated cortisol levels.
Choice E reason: Tremors are not typically associated with Cushing’s syndrome. While Cushing’s syndrome can cause a variety of symptoms, tremors are more commonly linked to other conditions such as hyperthyroidism or neurological disorders.
Correct Answer is B
Explanation
Choice A: Tachycardia
Tachycardia, defined as a heart rate exceeding 100 beats per minute, can affect the accuracy of pulse oximetry readings. When the heart beats too quickly, it may not fill with enough blood between beats, leading to reduced perfusion and oxygen delivery to tissues. However, while tachycardia can influence the readings, it is not the most significant factor compared to hypotension.
Choice B: Hypotension
Hypotension, or low blood pressure, significantly impacts pulse oximetry accuracy. When blood pressure is low, there is reduced perfusion to peripheral tissues, including the extremities where pulse oximeters are typically placed. This reduced perfusion can lead to inaccurate readings, as the device may not detect sufficient blood flow to measure oxygen saturation accurately. Hypotension is a critical factor that can alter pulse oximetry values, making it the most relevant choice.
Choice C: Tachypnea
Tachypnea, or rapid breathing, can affect oxygen levels in the blood but does not directly interfere with the pulse oximeter’s ability to measure oxygen saturation. While it indicates respiratory distress and can lead to hypoxemia, the pulse oximeter can still provide accurate readings unless accompanied by other factors like low perfusion.
Choice D: Fever
Fever can cause peripheral vasodilation, which might theoretically affect pulse oximetry readings by altering blood flow to the extremities. However, this effect is generally minimal compared to the impact of hypotension. Fever alone is unlikely to cause significant inaccuracies in pulse oximetry measurements.
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