3 Dysrhythmia Recognition Online Quiz Questions

A rhythm strip shows a P wave before every QRS. The PR interval is prolonged but remains constant. Which interpretation best fits this pattern?

A slow heart rate by itself establishes that an asymptomatic patient is hemodynamically unstable.

On a rhythm strip, each successive PR interval becomes longer until a P wave is not followed by a QRS; then the pattern repeats. Which conduction abnormality is present?

Which steps belong to the initial rhythm-strip review before assessing the patient? Select all that apply.

A sudden-onset, regular tachycardia has narrow QRS complexes. What rhythm category does this pattern suggest?

A rhythm is irregularly irregular, and distinct P waves are not visible before the QRS complexes. Which rhythm best fits these findings?

After identifying a rhythm pattern, which patient findings should be assessed? Select all that apply.

Mobitz II can progress to more serious block, so it warrants prompt clinical escalation and assessment of the patient.

An ECG shows regular P waves and a slower, regular QRS rhythm, but the P waves and QRS complexes occur independently with no consistent PR relationship. What is the likely rhythm?

A patient has a regular wide-complex rhythm at 172 beats/min, a palpable pulse, severe hypotension, and altered mental status. What is the most appropriate response?

A patient with an unstable wide-complex tachycardia initially has a pulse but then loses it. What response should be initiated?

What PR-interval cutoff, in seconds, defines prolongation for first-degree AV block? The interval must be greater than this value.

True or false: A monitor pattern alone establishes how urgently a patient needs intervention.

A rhythm is irregularly irregular, and distinct P waves are not visible before the QRS complexes. What rhythm best fits these findings?

A patient has a regular rhythm at 44 beats/min. Each narrow QRS is preceded by an upright P wave, and the PR interval is consistent. The patient is alert and denies symptoms. Which interpretation and response are most appropriate?

An ECG shows repetitive, sawtooth-like atrial waves. Several atrial waves occur for each QRS complex, and the ventricular rhythm is regular. Which interpretation is most likely?

On a rhythm strip, each cycle shows a progressively longer PR interval until a P wave is not followed by a QRS; then the sequence repeats. Which conduction abnormality is present?

A single-view tracing does not clearly show the atrial activity, so the rhythm cannot be confidently interpreted from that view alone. What ECG acquisition feature may help clarify the pattern?