*
» -
4
I
1
■
•
4
Q - T = 0 , 3 5
0 ,0 5
0 ,1 7
0
S
E K G
P = 0 ,0 5 11 gacha
P - Q = 0 , 1 7 "
O R S = 0,08"
0 7 = 0 , 3 5 "
P - Q
Q R S
0 ,0 8
E le k t r o k a r d i o g r a m m a n i y o z is h d a u c h s t a n d a r t v a o ltita k o ‘krak
u la n is h la r id a n fo y d a la n ila d i. I s t a n d a r t u l a n is h d a e l e k t r o k a r d i o
g r a m m a e le k tr to k la ri u la n is h h o l a t i d a o ‘ng va c h a p q o ‘ld a n y ozib
o lin a d i. Ils id a e le k tr to k i, o ‘ng q o i v a c h a p o y o q d a n , III sida
c h a p q o i va c h a p o y o q d a n y o z ib olin ad i.
E le k tro k a rd io g ra m m a n i k o ‘krak u lanishida yozib o lishda h arak at
toki bevosita y u ra k s o h asid a olinadi. E le k tro d la rn in g biri o ‘ng q o i g a
b o g i a n i b , h a m m a k o ‘k r a k u l a n i s h l a r i y o z i b o l i n m a g u n c h a
53
y ec h ilm ay d i. Ik k in c h i k o 'k r a k elek tro d i k o ‘kra k qafasin in g quyidagi
n u q ta la r ig a o brnatiladi. T o ‘s h n in g o ‘ng q irra sid a t o ‘r t in c h i q o v u r g ‘a
oralig‘iga—birinchi k o ‘krak ulanishi (C/?, yoki Қ ) , beshinchi q o v u rg ‘a
o r a l i g ‘i d a t o ‘s h n i n g c h a p q i r r a s i d a — i k k i n c h i k o ‘k r a k u l a n i s h i
( C R 2
y o k i
V2);
k e y i n c h a l ik k o ‘k r a k e l e k t r o d i b e s h i n c h i q o v u r g ‘a
o ra lig ‘idagi m a ’lu m ta n is h c h iz iq la r b o ‘ylab h a r d o i m olib q o ‘yib
tu r i l a d i , s h u n d a y qilib , e l e k t r o d n i n g c h a p t o ‘s h o ld i c h i z i g ‘id a
j o y la s h g a n i u c h i n c h i u la n is h
( C R 3
y o k i
V3),
c h a p o ‘rta o ‘m r o v
c h iz ig ‘i b o ‘ylab jo y la s h g a n i t o ‘rtin c h i u la n is h
( C R A
yoki
V4),
old
q o ‘ltiq c h i z i g ‘i b o ‘y lab j o y la s h g a n i b e s h i n c h i u la n is h
( CR-
yoki
V.)
va o ‘r t a q o i t i q c h i z i g ‘i b o ‘y la b j o y l a s h g a n i o l t i n c h i u l a n i s h
( C R b
yoki K6) b o ‘ladi.
Y u r a k faoliyati to k la r in in g e le k t r o k a r d i o g r a f y o r d a m i d a y ozib
o lin g a n egri c h iz ig ‘i e l e k t r o k a r d i o g r a m m a d e b a ta la d i. N o r m a l
e le k t r o k a r d i o g r a m m a y u q o rig a y o ‘n a lg a n u c h
( B ^ R v a
7) va pastga
y o ‘n a lg a n ikki ( ( ) va 5) tis h c h a g a eg a boN adi. P t i s h i y u r a k b o ‘l-
m a la r id a s o d ir b o N a d ig a n e le k tr h o d is a la rn i aks e ttira d i.
Q R S
va
T
tis h c h a la r i q o r i n c h a k o m p le k s in i tashkil e tadi.
B u n d a
Q R S
tis h c h a la r i e l e k t r o k a r d i o g r a m m a d a
q o ‘z g ‘alish
t o ‘lqini q o r i n c h a l a r b o ‘ylab ta rq a lg a n v a q tid a y ozilsa, T ti s h c h a
t o ‘l q i n n i n g t a m o m b o ‘lg a n v a q tin i k o ‘rsa ta d i.
P
t is h c h a s i b ila n
( ) t i s h i o r a s id a m a s o f a b o r , b u m a s o f a
P— Q
in terva l! d e b a ta la d i.
S ti s h c h a s i bilan 7 t i s h c h a s i o ra sid a esa S — 7 interval! bor. E le k tr o
k a r d io g r a m m a tis h c h a la r in in g kattaligi, y o ‘nalishi va x a ra k te ri turli
sab a b la rg a b o g ‘liq boNadi. N o r m a l e l e k t r o k a r d i o g r a m m a e n g k a tta
t i s h c h a l a r i k k i n c h i u l a n i s h d a , u n d a n sal k i c h i k r o g ‘i b i r i n c h i
u la n is h d a va e n g k ichkinasi u c h in c h i u la n is h d a kuzatiladi.
54
4-bob.
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