Rhythm Interpretation第 34 / 100 题
What is the correct way to determine whether a ventricular rhythm is regular?
a.Compare the height of each R wave across the strip
b.Measure the R-to-R intervals across the strip and see whether they are equal
c.Count the number of P waves in six seconds
d.Compare each PR interval to 0.20 second
解析
Ventricular regularity is judged by marching out the R-to-R intervals with calipers or paper and checking whether they stay the same; atrial regularity is judged the same way using P-to-P intervals. R wave height reflects voltage and lead placement, not regularity. Counting P waves gives the atrial rate, and measuring PR intervals evaluates AV conduction.
免费刷完整 100 道题库 — 无需注册。
同考点相关题目
- Which group of rhythms is considered immediately life-threatening and requires the technician to summon help right away?
- What does the QT interval measure on an EKG tracing?
- A strip shows a normal sinus beat followed by a wide bizarre beat, then another sinus beat followed by another wide bizarre beat, repeating throughout the strip. What is this pattern called?
- Which premature ventricular contraction pattern is considered most dangerous because it can trigger ventricular tachycardia or fibrillation?
- An otherwise normal sinus strip contains one early narrow beat with an inverted P wave right in front of it and a PR interval of 0.08 second. What is this beat?
- On standard EKG paper running at 25 mm/sec, how far apart are the vertical time markers printed at the top of the strip used for the six-second method?