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what is complete Heart block
• Complete Heart Block i...
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Complete heart block: There is AV dissociation, with the atrial rate (~100 bpm) independent of the ventricular rate (~40 bpm)
In complete heart block, there is complete absence of AV conduction, with none of the supraventricular impulses conducted to the ventricles. The perfusing rhythm is maintained by junctional or ventricular escape rhythm. Alternatively, the patient may suffer ventricular standstill leading to syncope (if self-terminating) or sudden cardiac death (if prolonged).
Clinical significance
Patients with third degree heart block are at high risk of ventricular standstill and sudden cardiac death
They require urgent admission for cardiac monitoring, backup temporary pacing and usually insertion of a permanent pacemaker
Complete Heart Block:
Atrial rate is ~ 85 bpm
Ventricular rate is ~ 38 bpm
None of the atrial impulses appear to be conducted to the ventricles
Rhythm is maintained by a junctional escape rhythm
Marked inferior ST elevation indicates that the cause is an inferior STEMI
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23 дек 2022
