Sinus pause
MSP221 recording · 06
The source describes a 44-year-old woman admitted with mildly symptomatic COVID-19 pneumonia; the pauses were asymptomatic.
Original waveform retained; quiz cropping only removes off-tracing interpretation or a row containing an answer label. Some sources are rhythm strips rather than a full 12-lead ECG.
Look for
- Absent P waves during pauses.
- Activity resumes after the pauses.
Where to look. Follow lead II during the pauses: no P or QRS at the expected time, then resumption.
A pause without P waves suggests impaired sinus activity or exit. Exclude a hidden blocked premature P wave before concluding.
The source diagnosis is retained; no additional clinical cause is inferred.
References & provenance
John Hampton; David Adlam. The ECG Made Practical, 7th ed. (2019), ch. 5, pages du PDF / PDF pp. 167-170.
PerpetuallyTachy. Sinus pause. https://commons.wikimedia.org/wiki/File:ECG_Sinus_Pause.jpg. CC BY-SA 4.0. Adaptation: lossless metadata removal/encoding; quiz crop removes off-tracing labels/interpretive panels where applicable. Derivative image retains the same license. CC BY-SA 4.0
Adaptation: cropping and removal of headers/annotations outside the tracing where applicable; metadata removed. Waveforms have not been redrawn.
Compared with the published source; no independent clinical validation is claimed.
Original annotations & limitations
Sinus pause
Sinus pause
Original source labels retained. Question wording limited to visible findings; no independent clinical validation claimed.