Page 1 of 1: q.physiology- 3 rd degree heart block

sneha_usmle · Credits: 1527 My Scrapbook

which of the following abt 3rd degree heart block is false?

1. the ventricles n atria beat independently of each other.

2.both P waves n QRS complexes r present

3.P waves bear no relation to the QRS complexes

4.ventricles beat faster than atria.

5. ususally treated by pacemaker

byebye

prathyumans · Credits: 138 My Scrapbook

the false statement is ventricles beat faster than atria!

dr4jc · Credits: 4396 My Scrapbook

yes ventricles actually beat slower than the atria....because none of the impulses are reaching the ventricle from the atria and the ventricle starts spontaneously generating impulses at much lesser rate..

Anatomicus · Credits: 493 My Scrapbook My Reading List 8 Books

Ventricles::: AV node

Atria :-SA node

SA node > AV node

Mystic_mind · Credits: 1356 My Scrapbook

yes the ventricles definitely beat slower than the atria as the have less freq. of pacemaking activity

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