Sinoatrial block: Difference between revisions
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(SA Block) |
(No difference)
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Revision as of 06:23, 30 March 2011
Sinoatrial Block (SA Block)
| Rate | Normal to slow | Defined by duration of frequency of block | |||||
| Rhythm | Irregular when a block occurs | P wave | Upright and uniform, except during the dropped beat | PR interval | Normal (0.12 - 0.20 sec), except during the dropped beat | QRS | Normal (0.06 - 0.10 sec), except during the dropped beat |
- Cardiac output will decrease, possibly causing syncope or dizziness. - Occurs in some multiple of the PP interval. - After dropped beat, cycles continue on time.