Clinical ProceduresQuestion 38 of 100
A rhythm strip shows regular QRS complexes at a rate of 76 beats per minute, each preceded by an upright P wave with a consistent PR interval. How is this rhythm best described?
a.Ventricular fibrillation
b.Sinus bradycardia
c.Normal sinus rhythm
d.Asystole
Explanation
Normal sinus rhythm is regular, between 60 and 100 beats per minute, with one upright P wave before every QRS and a constant PR interval, which matches the description. Sinus bradycardia would require a rate under 60. Ventricular fibrillation shows chaotic waveforms with no identifiable QRS, and asystole is a flat line with no electrical activity.
Practice all 100 questions free — no signup required.
Related questions on this topic
- When performing a 12-lead EKG, where is lead V1 placed?
- An EKG tracing shows a wandering, wavy baseline with fuzzy spikes across all leads. The patient is shivering and talking. What is the most likely cause and correction?
- What are the standard EKG paper speed and sensitivity settings used for a routine 12-lead tracing?
- Following the standard order of draw, which tube is collected immediately after the light blue sodium citrate tube?
- A medical assistant applies a tourniquet and then has trouble locating a vein. After how long should the tourniquet be released?
- Which vein is generally the first choice for routine venipuncture in an adult, and why?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against NHA Certified Clinical Medical Assistant (CCMA) Exam · How we review