ECG: BUNDLE BRANCH BLOCK (BASICS) THERE ARE 3 TYPES OF BBB( RIGHT, LEFT AND COMPLETE) EASY WAY TO FIND OUT BUNDLE BRANCH BLOCK : IF YOU NOTICED (BUNNY EARS FORMATION OR M SHAPE WAVES IN LEADS) THEN WE HAVE TO FIND OUT WHICH LEADS WHETHER IT'S LEFT OR RIGHT FOR EXAMPLE: RIGHT BBB ( BEST SEEN IN LEADS V1,V2,V3) LEFT BBB ( BEST SEEN IN LEADS V4,V5,V6) RIGHT BBB INDICATES PROMBLEMS IN THE RIGHT SIDE OF THE HEART AND LEFT BBB INDICATES LEFT SIDE. RIGHT BUNDLE BRANCH BLOCK: WE CAN NOTICE M-SHAPED OR BUNNY EARS FORMATON WAVES IN LEADS :V1,V2,V3 (HERE YOU CAN SEE M-SHAPED WAVES IN V1,V2,V3) SO, IT IS RIGHT BBB LEFT BUNDLE BRANCH BLOCK: WE CAN NOTICE M-SHAPED OR BUNNY EARS FORMATION WAVES IN LEADS: VL, V4,V5,V6 ( HERE YOU CAN SEE M-SHAPED WAVES IN LEADS:VL,V5,V6) SO, IT IS LEFT BBB COMPLETE BUNDLE BRANCH BLOCK: IF YOU SEE M-SHAPED WAVES IN LEDS V1-V6 ON BOTH RIGHT AS WELL LEFT IT INDICATES COMPLETE BBB
WOLFF-PARKINSON-WHITE SYNDROME (WPW) BASICS SIMPLE CONCEPT: PR-INTERVAL (SHORT). DELTA WAVE. QRS COMPLEX (LONG) OVERVIEW: THE ONLY NORMAL ELECTRICAL CONNECTION BETWEEN THE ATRIA AND VENTRICLES IS THE HIS BUNDLE . SOME PEOPLE, HOWEVER, HAVE AN EXTRA (OR) "ACCESSORY" CONDUCTING BUNDLE, A CONDITION KNOWN AS THE WPW SYNDROME. THE ACCESSORY BUNDLES FORM A DIRECT CONNECTION BETWEEN THE ATRIUM AND THE VENTRICLE, USUALLY ON THE LEFT SIDE OF THE HEART, AND IN THESE BUNDLES THERE IS NO (AV-NODE) TO DELAY CONDUCTION. A DEPOLARIZATION WAVE THEREFORE REACHES THE VENTRICLE EARLY AND PRE-EXCITATION OCCURS. PR-INTERVAL SHORT, AND THE QRS COMPLEX SHOWS AN EARLY SLURRED UPSTROKE CALLED A "DELTA WAVE". THE SECOND PART OF QRS IS NORMAL, AS CONDUCTION THROUGH THE HIS BUNDLE CATCHES UP WITH THE PRE-EXCITATION. NOTE: SINUS RHYTHM, RIGHT AXIS DEVIATION, SHORT PR-INTERVAL. SLURRED UPSTROKE OF THE QRS COM
Good info Doctor
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