Ectopic Complexes: Difference between revisions

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Ectopic Complexes (view source)

Revision as of 15:19, 23 July 2007

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* ''Ventricular ectopic pacemaker'' frequency 30-40bpm
* ''Ventricular ectopic pacemaker'' frequency 30-40bpm


===Atrial rhythm===
===Examples===
{{Arrhythmias|
*[[Atrial rhythm]]
| name = Atrial Rhythm
*[[Wandering Pacemaker]]
| locatieImage = [[Image:ECG_atrial_rhythm_now_sr.png|250px]]
*[[Premature Atrial Complex]]
| atrial_frequency = 50-100 bpm
| ventricular_frequency = 1:1
| regularity = regular
| origin = atrial
| p_wave = present, but different from sinus rhythm
| adenosine = slows down
| example = [[Image:ECG_atrial_rhythm_now_sr.png |250px| Atrial rhythm. In this example the sinus node stopped pacing due to ischemia during an atrial infarction. The p-wave is positive in I, negative in III and AVF. The atrial pacemaker is thus situated at the bottom of the right atrium, close to the AV node.]]
}}
Atrial rhythm resembles sinusrhythm, but origins from a different atrial focus. It can be recognised by the abnormal configuration of the p-wave. Often the p-wave is negative in AVF, as is seen in the example.
{{clr}}
 
===Wandering Pacemaker===
[[Image:Rhythm_WAP.png|thumb| Wandering pacemaker. Every p-wave is different and thus has a different origin.]]
When several pacemakers are competing, p-waves with different origins and thus configurations occur. The rhythm is slightly different from beat to beat.
 
'''note''' If the heart rate increases to above 100bpm, it is called ''Multifocal Atrial Tachycardia''. Possible causes are hypoxia, COPD and medication such as digoxin.
{{clr}}
 
===Premature atrial complex / atrial extrasystole===
{{: Premature Atrial Complexes}}


===AV-nodal complexes===
===AV-nodal complexes===
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