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Discussion of MAT

- sinus rhythm/ sinus tach: which is interupted by PACs; 
- P wave morphology varies from beat to beat 
- AV conduction varies from beat to beat 
- rhythm is irregular 
- precursor to A. Fib 
- vagal manuevers are usually not effective; 
- Digoxin is not indicated for the treatment of MAT; 
- Beta blockers are to be Avoided; they worsen bronchospasm