The P-on-U Effect
Hypokalæmia
Report:
Sinus tachycardia 135/min
Non-specific ST/T changes
Prominent U waves
Consistent with hypokalæmia
Comment:
As stated earlier, the pun is Schamroth’s174. This second example is to reward the fast learners.
The large U wave is superimposed on the P wave, obscuring the latter in all the leads except V1. In Schamroth’s case, there was also hypokalæmia-induced first and second degree AV block, making the U-P mimic T-U combination.
The serum potassium was only 2.9 mmol/L.
If you have any suggestions for or feedback on this report, please let us know.
Hi, can we chat about some terms and conditions?
The library and it's records are licensed under the Creative Commons Attribution 4.0 International license.
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
By clicking agree below, you are agreeing to adhere to CC BY 4.0.