conduction Disorders
conduction disorders in a de L BB (Bundle Blanch Blocks)
-
Conduction the distal parts of the bundle bunch
problems in
•
•
conduction Piiblems in AV node 4 His bundles
,Introduction
Conduction
•
of the excitation delayed can be or blocked at
any point
This is mind
•
Think
easy
to
analyse AVjustnode keep the conduction
system in
your
.
SA node His bundle → BB
of
•
→ →
SA nude !! ! !
In all that follows depolarization begins normally in to
Rhythm best inkiplekd lead which shows
of the heat Ecg the P wave
any
•
is
plum
-
This head / Lead V1
is
usually 11
•
CONDUCTION DISORDERS IN AV NODE & HIS BUNDLE
'i
NB !
,
•
PR interval shows time taken
for
the
spread of depolarization from
SA node → ventricular muscle
-
It is not > 220ms ( 0,22s )
-
not mole than small
5
squalls
FIRST DEGREE HEART BLOCK CAV block)
PR interval ventricles)
is
prolonged ( Due to
delay of impulse from got node to
• -
causes
of
1st
degree Heart block
disease mitral valve
conning alley surgery
i. 5.
2. acute rheumatic carditis
Digoxin amivddlonl
3.
toxicity , BB ,
CCB ,
4.
Electrolyte imbalance
1.
9 small squalls : 01048 ✗ 9 =
0,36s =
360mg
.
• RR inlet Vals sunt
i. > 220ms / 0,225
15 15 15 Example 2
- i I f l l l - / 1 I - n ' l ' T - 1 I 1 / 1 1 , I t h
- i i - e i 1 I - y , , , , ,
"
,
, , , ,
y ,
PR interval =
7- squalls ⑦✗ 0,04 small squalls)
=
280ms =
0,28s