Concealed Retrograde Conduction
Report:
Sinus rhythm 65/min
VEBs, mostly interpolated
Nonspecific ST/T changes
Comment:
For comparison, the last VEB blocks the ensuing P wave completely, producing a fully compensatory pause. Other VEBs merely prolong the subsequent PR interval, though concealed retrograde conduction â visible only by inference, by its effect on the next beat. Manifest retrograde conduction would have retrograde P waves instead. If there was no interpolation and all the VEBs caused AV block for the next P wave, the rhythm would be VEBs in trigeminy.
Below (Fig 150a) , the same VEBs are bigeminal. Itâs easy to see that, were they to be interpolated, the interpolation would be in alternate cycles, again producing a form of trigeminy.
Fig 150a. VEBs in bigeminy.
Fig 151. 51 year old with new aortic incompetence due to endocarditis. He died the following day.
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 its 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.