3.5 Interpretations judgment based on parameters
No. Item Rule of interpretation
1
No any abnormal are detected
2
Sinus mode Bradycardia
Sinus P-wave, PR-interval between
110ms-210ms, HR
≤
*/min, general *=50
3
Sinus mode Tachycardia
Sinus P-wave, PR-interval between
110ms-210ms, HR
≥
*/min, general *=100
4
Left atrium Hypertrophy
P-wave of leads I, II, aVL shall meet the
conditions: width increase of P-wave≥110ms,
or P-wave displays in double-peak type,
value of peak to peak ≥40ms
5
Right atrium Hypertrophy
For leads I, II, aVF, amplitude of P-wave
≥0.25mV, or P-wave is sharp
6
Dual atrium Hypertrophy
For leads I, II, aVF, amplitude of P-wave
≥0.25mV and P-wave duration >110ms
7
QRS low voltage
Voltage of I-aVF limb leads
<
0.5mV, and
voltage of V1-V6 chest leads
<
0.8mV
8
Cardiac electric axis normal
QRS-axis between 30 to 90 degree
9
QRS-axis between -90 to-30 degree
10
Right axis deviation
QRS-axis between 120 to 180 degree
11
Completeness Right Bundle branch
QRS-duration>120ms, R-wave of lead V1 or
aVR is wide (width of R-wave>80ms)
12
Completeness Left Bundle branch
block
QRS-duration>120ms, R-wave of lead V5 or
V6 is wide
13
No Completeness Right Bundle
QRS-duration<120ms, R-wave of lead V1 or
aVR is wide (width of R-wave>80ms)
14
No Completeness Left Bundle
branch block
QRS-duration<120ms, R-wave of lead V15
or V6 is wide (width of R-wave>80ms)
15
QRS-complex of lead V1 is RSR' type
16
Left anterior fascicular block
QRS-duration<110ms, QRS-axis <-30
degree, lead I and lead aVL are qR type, and
Q-wave duration<20ms, lead II, III and aVF
are rS type.
17
Left posterior fascicular block
QRS-duration<110ms, QRS-axis >90 degree,