Congenital Complete Heart Block: Ventriculophasic Sinus Arrhythmia
Report:
Sinus rhythm 67 – 70/min
Third degree AV block
Junctional escape rhythm 42/min
Ventriculophasic sinus arrhythmia
Right atrial abnormality (RAA)
Comment:
The ventricular rate is regular and slow, the faster P waves completely dissociated: complete AV block.
The P waves are themselves regularly irregular. This is a good example of ventriculophasic effect in complete AV block; it is usually more discernible in second degree blocks. The P waves surrounding the QRS are much closer together than those with “empty” cycles.
The patient received a permanent pacemaker (Fig 80a). Note the atrial pacing spikes trying, unsuccessfully, to contribute their share of pacing. They are too late for that and merely distort the native P waves (pseudofusion beats, a term more commonly applied to spikes in native QRS complexes).
The patient has normal “septal” q wave in V6, excluding corrected transposition as the cause of her block.
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.