563
TÌM HIU MI LIÊN QUAN GIN TH MUI LON
NHP TH B MT BNH NHÂN NH
: u
-
-250Hz.
ABSTRACT
RELATION BETWEEN THE LATE POTENTIAL WITH CONVENTIONAL ECG
IN DETECTING VENTRICULAR ARRYTHMIAS
OF ACUTE MYOCARDIAL INFARCTION.
Aim: Many studies show that the analysis of late potentials were identified as one of the
most effective means for evaluating patients with risk of ventricular arrhythmias after
myocardial infarction block.
Patients & methods: We have measured the late potential in 52 AMI patients. The late
potential was measured by Schiller AT-60 made by Swiss company. Its parameters as follows:
average results of 300 QRS complex, permitted artifacts was < 0.5 µV, 2 sides filter with a
frequency of 25-250Hz.
Results: Positive late potential was 40.38%, Negative late potential is 59.62% . Ventricular
arrhythmias with 15 patients.
Conclusion: There was a higher link between positive late potentials and ventricular
arrhythmias with the difference statistically significant.
1. hân NMCT.
NMCT.
564
-
-
-
- -
- -p cho
-250Hz.
-
liên quan
-
-
+ LAHFd (duration of the high frequency, low amplitude portion at the end of QRS cycle):
+ RMS (40ms) (Root mean square value of the high frequency signal terminal 40ms of the
ventricular activat
+ RMS (50ms) (Root mean square value of the high frquency signal terminal 50ms of the
-
TM (+). Theo Buckingham,
) <24µV, LAHFd>33ms.
2.3.
-
-
n
p
Nam
38
73,1
0,016
14
26.9
565
3.1.
3.
n
%
p
<60t
15
28,8
0,027
37
71,2
3.3
n
%
22
42,3
12
28,27
Béo phì
10
19,23
8
15,38
4
7,69
1
1,92
1
1,92
3.4. Cá
n
%
p
Suy tim
33
63,46
<0,001
15
28,85
2
3,84
1
1,92
n
%
9
60,0
4
26,7
2
13,3
6
-)
21
31
52
40,38
59,62
100
-
-
7
Chung
-)
Nam
X±SD (ms)
114,43±15,2
79,78±11,20
92,16±19,44
93,64±23,08
95,56±20,26
p
<0,05
>0,05
-).
566
8
Chung
-)
Nam
X±SD (ms)
1,21±19,19
-6,60±8,39
-3,43±12,17
-3,15±10,43
-3,75±13,73
p
<0,05
>0,05
-).
9
Chung
-)
Nam
X±SD (µV)
29,85±18,63
104,41±73,7
73,17±62,47
77,40±85,50
74,30±68,54
P
<0,05
>0,05
-).
10
Chung
-)
Nam
X±SD (µV)
39,20±21,59
155,40±75,21
108,52±76,05
108,35±101,55
108,47±82,6
p
<0,05
>0,05
-).
11i
Chung
-)
Nam
X±SD (µV)
37,91±13,04
19,26±8,25
29,95±14,48
26,36±10,37
26,79±13,86
p
<0,05
>0,05
-).
3.3. (+)
3.12
-) (n;%)
p
10; 47,6%
5; 16,1%
0,014
11; 52,4%
26; 83,9%
-7,41).
3.1 và 3
567
3.3.
3.4
3.5
7
4. 5
3.12
5.
-
-)
Chung
HFQRSd
114,43±15,20
79,78±11,20
95,56±20,26
1,21±19,19
-6,60±8,39
-3,75±13,73
RMS (40µV)
29,85±18,63
104,41±73,33
74,30±68,54
RMS (50 µV)
39,20±21,59
155,40±75,21
108,49±82,61
LAHFd (ms)
37,91±13,04
19,06±8,25
26,79±13,86
-
568
-
5.
1.
-193.
2.
-346.
3.
-321.
4. -
-284.
5.
6.
- -104.
7. -77.
8.
-274.
9. term outcomes by signal
averaged ECG in patients with unsutained ventricular tachycardia, coronary artery
10. - averaged eletrocardiogram in the prediction of
-524.
11. Kozer LM, Cheri
ventricular late potentials dêtcted before discharge in patients after myocardial
Jheart J, 139 (1) Mediline.
12. rdial infarction using signal
averagad electrocardiographie criteria adjusted for sex, age, and myocardial infarction
-213
13.
nciples of internal medicine, 1066-1077.