Your client was admitted for shortness of breath. A 6 second rhythm strip of their telemetry is seen here. You anticipate that the physician might order what medication to treat this dysrhythmia?
Nitroglycerin
Hydrochlorothiazide
Atropine
Warfarin
The Correct Answer is D
A. Nitroglycerin: This vasodilator is used to treat anginal chest pain by reducing preload and dilating coronary arteries. It has no role in the management of atrial fibrillation, which is characterized by an irregularly irregular rhythm. Using a nitrate here would not address the underlying electrical disorganized activity in the atria.
B. Hydrochlorothiazide: As a thiazide diuretic, this medication is used primarily for the long-term management of hypertension and mild fluid retention. It does not possess any antiarrhythmic properties and would not be effective in controlling the ventricular rate. Diuretics are not the standard of care for treating an acute rhythm disturbance on a telemetry strip.
C. Atropine: This anticholinergic agent is indicated for the treatment of symptomatic bradycardia by increasing the heart rate. Atrial fibrillation often requires rate control to prevent tachycardia-induced cardiomyopathy rather than stimulation of a faster rate. Atropine could potentially worsen the clinical situation by causing a dangerously rapid ventricular response.
D. Warfarin: Atrial fibrillation causes blood to pool in the atria, which significantly increases the risk of mural thrombus formation and subsequent embolic stroke. Anticoagulation is a mandatory component of management to prevent these life-altering thromboembolic complications. Warfarin is a standard oral anticoagulant used to maintain a therapeutic INR in patients with this chronic dysrhythmia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D","E","F"]
Explanation
A. Pulse ox of 88% on 3 1pm NC: An oxygen saturation of 88% while receiving 3 liters of oxygen indicates significant impairment in gas exchange. This value is below the standard therapeutic target and suggests worsening pulmonary involvement or ventilation-perfusion mismatch. This finding requires immediate medical evaluation and potential adjustment of respiratory support.
B. Lungs are clear to auscultation: This is a normal finding indicating that, at the time of assessment, there is no audible fluid in the alveoli. While heart failure often causes crackles, clear lungs do not require immediate follow-up as an abnormal finding. It serves as a baseline for monitoring future respiratory changes.
C. + 2 pitting edema of the bilateral hands: Edema in the upper extremities is an atypical finding for standard dependent edema and suggests severe systemic fluid retention. It indicates that the venous backup has progressed beyond the lower extremities to involve more superior vascular beds. This requires investigation into the underlying cause of generalized anasarca.
D. + 2 pitting edema of the ankles and feet: Pitting edema in the lower extremities is a clinical manifestation of systemic venous congestion and fluid volume excess. This finding indicates that the current treatment for peripheral edema is not yet effective. The nurse must monitor this to evaluate the patient's response to diuretic therapy.
E. Blood pressure of 150/82: This reading indicates Stage 2 hypertension, which contributes to increased afterload and exacerbates heart failure. Elevated systemic vascular resistance places additional strain on the myocardium and impairs efficient pumping. Persistent hypertension requires pharmacological management to prevent further cardiac remodeling and damage.
F. Respiratory rate is 24: A rate of 24 breaths per minute is tachypneic and suggests the patient is compensating for hypoxia or decreased lung compliance. This increased work of breathing often precedes more severe respiratory distress in fluid-overloaded patients. It correlates with the low pulse oximetry and necessitates closer clinical observation.
G. Abdomen is soft, non-tender, non-distended: This is a normal physical assessment finding indicating the absence of ascites or organomegaly at this time. It suggests that the fluid volume excess has not yet resulted in significant peritoneal accumulation. No acute nursing or medical follow-up is required for this specific result.
H. Client is alert and oriented x 3: Normal mentation indicates that cerebral perfusion is currently adequate despite the patient's low oxygen saturation. It is a positive sign that the patient is not yet experiencing hypercapnia or severe hypoxia-induced encephalopathy. This baseline is used to monitor for any future neurological decline.
I. Heart rate is 88 bpm: A heart rate of 88 is within the normal adult range of 60 to 100 beats per minute. This indicates that the heart is not currently in a state of compensatory tachycardia to maintain cardiac output. It is a stable finding that does not require immediate clinical follow-up.
Correct Answer is B
Explanation
A. Macaroni and cheese: This food is high in carbohydrates and fats but does not contain significant amounts of Vitamin K. While not particularly heart-healthy, it does not directly interfere with the mechanism of warfarin. Patients on anticoagulants do not need to avoid this food specifically for PT/INR stability.
B. Kale chips: Kale is extremely high in Vitamin K, which is the direct physiological antagonist to warfarin. Consuming large or inconsistent amounts of leafy greens can lower the INR, making the blood more prone to clotting and reducing the medication's efficacy. Patients must maintain a consistent intake of Vitamin K to ensure stable anticoagulation levels.
C. Fast food burger and fries: High-fat meals can affect overall cardiovascular health and lipid levels but do not have a direct, acute impact on Vitamin K levels or warfarin metabolism. While the nurse should encourage better nutrition, this meal does not present the same immediate risk to PT/INR monitoring as high-Vitamin K foods.
D. Fruit salad: Most fruits are naturally low in Vitamin K and are safe for patients taking warfarin to consume. Fruit provides essential vitamins and fiber without interfering with the anticoagulant effects of the medication. This is a healthy dietary choice that does not require specific education regarding warfarin interactions.
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