Identify the following Cardiac Rhythm:
Sinus Tachycardia
Ventricular Tachycardia
Complete Heart Block
Idioventricular Rhythm
The Correct Answer is B
A. A sinus tachycardia is characterized by a sinus P wave at a rate of more than 100 per minute followed by a narrow QRS complex unlike in the strip depicted above.
B. The above ECG strip shows a ventricular tachycardia based on the wide QRS with a rate more than 120 bpm, AV dissociation and the fusion beats.
C. A complete heart block is characterized by QRS complexes being conducted at their own rates and totally independent of the P wave.
D. An idioventricular rhythm is characterized by a slow regular ventricular rhythm with a rate less than 50 bpm unlike in the above strip. It also has a prolonged QRS interval with no P wave.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale:
A. Mitral valve regurgitation typically presents with a murmur, which is a characteristic sound associated with the backflow of blood into the left atrium during systole.
B. S3 and S4 are not typical heart sounds and do not relate to mitral valve regurgitation.
C. A click is typically associated with mitral valve prolapse, not mitral valve regurgitation.
D. A friction rub is typically associated with pericarditis, not mitral valve regurgitation.
Correct Answer is C
Explanation
Rationale:
A. Salt substitutes often contain potassium and should be avoided in clients with hyperkalemia.
B. Citrus juices and bananas are high in potassium and should be avoided in clients with hyperkalemia.
C. A 12-lead ECG may include changes such as peaked T wave, flattened P wave, prolonged PR interval, ST depression, and prolonged QRS duration.
D. A serum sodium level should be obtained but it is not the priority in this case.
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