Intraventricular block

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| image = Right_bundle_branch_block_ECG_characteristics.svg

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| caption = ECG characteristics of an intraventricular block subtype - RBBB showing wide QRS complexes with a terminal R wave in lead V1 and a prolonged S wave in lead V6.

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| specialty = cardiology

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An intraventricular block is a heart conduction disorder — heart block of the ventricles of the heart.{{Cite web|title=Intraventricular Conduction - ECGpedia|url=https://en.ecgpedia.org/wiki/Intraventricular_Conduction|access-date=2021-10-17|website=en.ecgpedia.org|language=en}} An example is a right bundle branch block, right fascicular block, bifascicular block, trifascicular block.{{cite web |url=http://library.med.utah.edu/kw/ecg/ecg_outline/Lesson6/index.html#IV_block |title=Lesson VI - ECG Conduction Abnormalities |access-date=2009-01-07}}{{Cite web|title=ICD-10 Version:2019|url=https://icd.who.int/browse10/2019/en#/I45.4|access-date=2021-10-17|website=icd.who.int}}

Types

Types of intraventricular blocks are{{Cite web|title=Intraventricular Blocks|url=https://empendium.com/mcmtextbook/social/chapter/B31.II.2.7.3.|access-date=2021-10-17|website=empendium.com|language=en}}

Intraventricular conduction delay

File:Intraventricular conduction delay seen in V leads.png

Intraventricular conduction delays (IVCD) are conduction disorders seen in intraventricular propagation of supraventricular impulses resulting in changes in the QRS complex duration or morphology, or both. IVCD can be caused by abnormalities in the structures of bundle of His, Purkinje fibers or ventricular myocardium.{{Cite web|title=Intraventricular conduction delay: bundle branch blocks & fascicular blocks|url=https://ecgwaves.com/topic/intraventricular-conduction-delay-ecg-bundle-branch-fascicular-block/|access-date=2021-10-17|website=ECG & ECHO|language=en-US}}{{Cite web|title=Intraventricular conduction delay overview - wikidoc|url=https://www.wikidoc.org/index.php/Intraventricular_conduction_delay_overview|access-date=2021-10-17|website=www.wikidoc.org}} Nonspecific intraventricular conduction delay (NICD) is a delay with widened QRS complex but without a specific intraventricular block present.{{Cite web|title=Nonspecific intraventricular conduction delay (defect)|url=https://ecgwaves.com/topic/nonspecific-intraventricular-conduction-delay-defect/|access-date=2021-11-01|website=ECG & ECHO|language=en-US}}

References

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Further reading

  • {{cite journal |author=Stock RJ |title=Clinical significance of intraventricular block in acute myocardial infarction |journal=Bull N Y Acad Med |volume=47 |issue=8 |pages=987–98 |date=August 1971 |pmid=5284231 |pmc=1750154 }}