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?

Choice A Reason:

Weight loss.

Weight loss is a common symptom of hyperthyroidism. This condition speeds up the body’s metabolism, causing the body to burn calories more quickly than usual. Despite an increased appetite, individuals with hyperthyroidism often experience significant weight loss. This symptom is a direct result of the overproduction of thyroid hormones, which increases the metabolic rate.

Choice B Reason:

Intolerance to cold.

Intolerance to cold is not typically associated with hyperthyroidism; it is more commonly a symptom of hypothyroidism. Hyperthyroidism usually causes heat intolerance due to the increased metabolic rate, which raises the body’s temperature. Therefore, this choice is not relevant to hyperthyroidism.

Choice C Reason:

An elevated systolic blood pressure.

An elevated systolic blood pressure can be a symptom of hyperthyroidism. The increased levels of thyroid hormones can cause the heart to work harder, leading to higher blood pressure. This symptom is important to monitor as it can lead to further cardiovascular complications if left untreated.

Choice D Reason:

A heart rate of 90 bpm.

A heart rate of 90 bpm is within the normal range for adults and is not specifically indicative of hyperthyroidism. Hyperthyroidism typically causes a rapid or irregular heartbeat, often exceeding 100 bpm. Therefore, this choice does not accurately reflect a clinical manifestation of hyperthyroidism.

Choice E Reason:

Increased fatigability.

Increased fatigability is a common symptom of hyperthyroidism. Despite the increased metabolic rate, individuals with hyperthyroidism often feel tired and weak. This paradoxical symptom occurs because the body’s systems are overworked and cannot sustain the heightened activity levels, leading to fatigue.

Choice A Reason:

Monitoring the QT interval is crucial when administering amiodarone because this drug can prolong the QT interval, increasing the risk of torsades de pointes, a potentially life-threatening form of ventricular tachycardia. The QT interval represents the time it takes for the heart’s ventricles to depolarize and repolarize, and prolongation can lead to arrhythmias. Regular monitoring helps in early detection and prevention of such adverse effects.

Choice B Reason:

Heart rate monitoring is essential when administering amiodarone because the drug can cause bradycardia (a slower than normal heart rate). Amiodarone affects the electrical conduction system of the heart, which can lead to significant changes in heart rate. Monitoring the heart rate ensures that any bradycardia is detected early and managed appropriately to prevent complications such as hypotension or heart failure.

Choice C Reason:

While respiratory rate monitoring is important in general patient care, it is not specifically necessary for monitoring the effects of amiodarone. Amiodarone primarily affects the heart’s electrical activity and has less direct impact on respiratory function. However, in cases of severe adverse reactions, such as pulmonary toxicity, respiratory monitoring may become relevant.

Choice D Reason:

Monitoring heart rhythm is vital when administering amiodarone because the drug is used to treat arrhythmias and can also cause new arrhythmias or exacerbate existing ones. Continuous ECG monitoring helps in detecting any abnormal heart rhythms early, allowing for timely intervention. This is particularly important in patients with a history of arrhythmias or those receiving high doses of amiodarone.

Choice E Reason:

Urine output monitoring is not specifically necessary for patients receiving amiodarone. While maintaining adequate urine output is important for overall patient health, amiodarone does not typically affect renal function directly. Therefore, urine output monitoring is not a primary concern when administering this medication.