PLATE ECG-LBBB · 2 SOURCE FILES

Left bundle branch block

Study the finding, then test the visual cue against the linked Review and Q-Book material.

View current live plate ↗

THE PLATE02 / 02

IMAGE 01 · 1920 × 1560 px · Cached rendition

Left bundle branch block

Source ↗Original at source ↗Download local file ↓

Source, credit & reuse

Source description identifies LBBB with wide notched QRS in V5-V6 and deep S waves in V1-V2.

Sameem Arif · CC BY-SA 4.0 · inherited_catalog_not_refetched

License record ↗ · Media ID MED-d24be1bd73c72faf55c8

IMAGE 02 · 1920 × 1215 px · Cached rendition

Left bundle branch block

Source ↗Original at source ↗Download local file ↓

Source, credit & reuse

Source description identifies an ECG diagram of typical LBBB with wide QRS complexes; exact V1 and V5-V6 morphology remains unconfirmed.

Original: A._Rad Vector: Mrmw · CC0 1.0 · inherited_catalog_not_refetched

License record ↗ · Media ID MED-a0c7f82dae3d84a8866d

01 / WHAT MATTERS ON THE EXAM

LBBB shows QRS ≥120 ms with broad lateral R waves. New LBBB alone is not a STEMI equivalent; assess ischemic symptoms and Sgarbossa or modified Sgarbossa findings.

02 / WHAT TO LOOK FOR

Left bundle branch block: wide QRS, broad notched R in V5–V6, deep S in V1

03 / WATCH OUT FOR

New LBBB alone does not diagnose acute coronary occlusion; concordant or excessively discordant ST changes with ischemic symptoms warrant urgent reperfusion assessment.

04 / STUDY IT IN thecodexes.com SYSTEM

↗MyCodexesCV-ARR-03 · linked topic

RBradyarrhythmias, AV block & pacingPage anchor pending

Q-Book connections 3

Block 1 · Q10B01-012
Block 1 · Q16B01-018
Practice Exam 1 · Q40E1-106

FFlashcard libraryBrowse; card-specific link unassigned

Clinical references

Primary clinical reference 1 ↗