The nurse is reading a cardiac monitor of a patient and observes a regular rhythm, and the P waves have a sawtooth pattern. The nurse recognizes this as which arrhythmia?
Atrial flutter
Ventricular tachycardia
Atrial fibrillation
Sinus tachycardia
The Correct Answer is A
A. Atrial flutter is characterized by a regular rhythm with rapid atrial contractions (flutter waves) that have a sawtooth appearance on the ECG tracing.
B. Ventricular tachycardia typically presents with a wide QRS complex and is often associated with hemodynamic instability.
C. Atrial fibrillation is characterized by irregularly irregular rhythm with no distinct P waves and irregular ventricular response.
D. Sinus tachycardia is characterized by a regular rhythm with a heart rate greater than 100 beats per minute originating from the sinus node.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. While a splenectomy can lead to increased workload on the liver, it does not directly predispose the patient to liver disease.
B. A history of splenectomy does not specifically increase the risk of lupus.
C. Patients who have undergone splenectomy are at increased risk of certain infections, particularly encapsulated bacteria such as Streptococcus pneumoniae, which can cause pneumonia.
D. A history of splenectomy does not directly increase the risk of renal disease.
Correct Answer is B
Explanation
A. Bright orange urine could be caused by certain medications, such as rifampicin and phenazopyridine or food dyes, such as those containing carotene.
B. This is because the obstruction of the bile duct leads to an accumulation of bilirubin in the blood, which is then excreted in the urine, giving it a darker color.
C. Pale yellow urine is indicative of normal urine coloration and is not specific to bile duct obstruction.
D. Red urine could indicate the presence of blood, which might suggest other conditions such as urinary tract infections or kidney stones, but not typically bile duct obstruction.
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