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EKG Rhythms: Questions and Answers for Medical Students, Exams of Health sciences

A comprehensive overview of various ekg rhythms, including their characteristics, identification, and clinical significance. It presents a series of questions and answers designed to test understanding of ekg interpretation and analysis. Common rhythms such as normal sinus rhythm, atrial fibrillation, ventricular tachycardia, and more, offering valuable insights for medical students and professionals.

Typology: Exams

2024/2025

Available from 10/31/2024

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EKG rhythms questions and answers
100% verified
Normal Sinus Rhythm ✔✔Has an upright P wave identical throughout strip
PR interval is <0.20 second
QRS complexes are identical & no longer than 0.12 second
ST segment is flat
RR interval is regular & heart rate is 60 to 100/min
PAC's ✔✔Rate: depends on the rhythem
Rhythm: irregular due to premature beat
p waves: appear different from underlying rythem precedes QRS complex, may be lost in T wave
of previous beat.
QRS complexes: of normal duration and all look alike
PR intervals: normal or shortned
Sinus Tachycardia ✔✔Recognized when heart rate exceeds 100/min at rest
Each QRS complex is preceded by P wave
pf3
pf4
pf5

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EKG rhythms questions and answers

100% verified

Normal Sinus Rhythm ✔✔Has an upright P wave identical throughout strip

PR interval is <0.20 second

QRS complexes are identical & no longer than 0.12 second

ST segment is flat

RR interval is regular & heart rate is 60 to 100/min

PAC's ✔✔Rate: depends on the rhythem

Rhythm: irregular due to premature beat

p waves: appear different from underlying rythem precedes QRS complex, may be lost in T wave of previous beat.

QRS complexes: of normal duration and all look alike

PR intervals: normal or shortned

Sinus Tachycardia ✔✔Recognized when heart rate exceeds 100/min at rest

Each QRS complex is preceded by P wave

Sinus Bradycardia ✔✔Heart rate is less than 60/min

Each QRS is preceded by P wave

PR interval & QRS complex are normal

Junctional/Nodal ✔✔P wave: inverted or absent. may follow QRS complex.

PR: interval (short and less than 0.12 seconds)

QRS: usually 0.06-0.10 seconds QRS complexes should be normal but they can be wide or unusual looking

Accelerated Junctional ✔✔Rate: 40-60 BPM

rhythm: regular

P waves: inverted; may appear before QRS complex

QRS complexes: of normal duration and all look alike

PR intervals: if present will be shorter than normal

Atrial Fib ✔✔Results when atrial muscle quivers in irregular pattern; no true P waves are seen

Ventricular rate may be slow & irregular

*PR intervals & RR intervals remain regular with no correlation with one another

Ventricular Tachycardia ✔✔*Represent run of 3 or more PVCs in a row

*Easy to recognize as series of wide QRS complexes with no preceding P wave

*Ventricular rate is usually 100 to 250/min

Ventricular Fib ✔✔ECG shows grossly irregular fluctuations with zigzag pattern

Asystole ✔✔absence of any cardiac activity

Wandering Atrial Pacmaker Rhythm ✔✔Rate: usally normal

Rythem: slightly irregular

P waves: change in appearance, one precedes each QRS complex. At least three different p-wave configurations are needed to diagnose wandering atrial pacemaker.

QRS complex: of normal duration and all look alike

PR intervals: varies

Couplet ✔✔two pvcs in a row

Bigeminy ✔✔every other beat is a PVC

Trigeminy ✔✔every third beat is a PVC

Idioventricular (agonial rhythm) ✔✔Rate: 20-40 bpm

rythem: regular

p waves: are not visible

QRS: are wide (greater the 0.12 seconds in duration) and bizzare in apperence

pr intervals: are absent

PVC'S ✔✔rate: depends on underlying rythem

rhythem:irregular due to premature beat

p-waves: of are not visable as they are hidden in the QRS complex

QRS: of PVC's are wide (greater than 0.12 seconds in duration) and bizzare in apperence

PR intervals: of PVC's are absent