1/4 - The Mystery
A doctor is on overnight call in the hospital. They are also hooked up to continuous ECG monitoring.
🤔What might cause the following tracing?
A doctor is on overnight call in the hospital. They are also hooked up to continuous ECG monitoring.
🤔What might cause the following tracing?
2/4 - The Answer
📟 Being paged! 📟
This ECG is from a 31-year-old healthy physician just after being aroused by an "alarm call" while on-call in the hospital.
The associated study found that 63% of physicians experienced T-wave inversion when called!
pubmed.ncbi.nlm.nih.gov/9283539/
📟 Being paged! 📟
This ECG is from a 31-year-old healthy physician just after being aroused by an "alarm call" while on-call in the hospital.
The associated study found that 63% of physicians experienced T-wave inversion when called!
pubmed.ncbi.nlm.nih.gov/9283539/
3/4 - The Explanation
The transient T-wave inversions seen here are felt to reflect increased sympathetic tone.
Anyone who has held a pager overnight can attest to the surge of adrenaline that comes with each chirp, particularly when it wakes you from sleep.
The transient T-wave inversions seen here are felt to reflect increased sympathetic tone.
Anyone who has held a pager overnight can attest to the surge of adrenaline that comes with each chirp, particularly when it wakes you from sleep.
4/4 - Postscript
These are an example of "sympathetic T-waves".
For more information, see this thread on another example of sympathetic T-waves: cerebral T-waves.
These are an example of "sympathetic T-waves".
For more information, see this thread on another example of sympathetic T-waves: cerebral T-waves.
https://twitter.com/tony_breu/status/1556352183427371008?s=20&t=8DR4g4gm9OiIhQjjXPaBKw
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