Focal Atrial Tachycardia with Block
Objectives
At the end of this chapter, the student should be able to:
- Define focal atrial tachycardia (focal AT) with block, and list the diagnostic criteria of this rhythm. (p 238)
- Discuss the types of blocks seen in focal AT with block and their cardioprotective roles at very rapid atrial rates. (p 239)
- Discuss the hemodynamic compromise that can develop in a focal AT with block, and discuss the mechanisms causing the clinical instability. (p 239)
- Discuss the need for obtaining additional leads or a 12-lead ECG in any arrhythmia. Then focus your discussion to focal AT with block and the potential problem that can arise in using only lead II. (pp 239–241)
- List the most common arrhythmias that can appear similar to, or that can mimic, a focal AT with block. (pp 240–241)
- It is often an excellent idea to mentally link an arrhythmia with a clinical finding or complication. Distinguish between the list of differential diagnoses that can lead to the formation of a focal AT with block, and name the life-threatening possibility that should be foremost in your mind when evaluating these cases. (p 241)
- Describe the clinical rationale to use on a rhythm strip or ECG that has a P wave in or near the middle of the TP segment. (p 242)
- List some clinical conditions or circumstances that are associated with the formation of a focal AT with block. (p 242)
- Accurately identify focal AT with block on a rhythm strip or ECG. (pp 243–245)
