Rate-Dependent LBBB
Report:
Sinus rhythm 90/min
SVEBs, blocked, in bigeminy
Left bundle branch block, rate-dependent
Comment:
The blocked atrial extrasystoles are discretely etched on the onset of the T wave. In the upper strip, the last LBBB complex has a distinctive nipple on its ST/T wave. The blocked Pâ waves are more difficult to see but remain still discernible in the same position of normal complexesâ ST/T waves. The last normal complex and its LBBB successors have no wrinkles in the ST/T region, and normal sinus rhythm persists. A sustained run of blocked bigeminal SVEBs could be mistaken for sinus bradycardia 50/min.
Fig 79a. Different lead, unspecified, later. There are SVEBs and a VEB, with alternating (known) LBBB in the bottom strip.
Fig 80. 19 year old girl with poor exercise tolerance.
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.