Gima ECG90A - Page 53

47
7 QTc
RR
QT

8
P/QRS/T electric
axis
Electric axis formula:
PI
180
)3
S),S(S arctan(2.0
II
III
××+×
⑧
P electric axis:
S
III
: voltage sum from the beginning point to the end
point of P-wave on lead III
S
I
: voltage sum from the beginning point to the end
point of P-wave on lead I
QRS electric axis:
S
III
: voltage sum from the beginning point to the end
point of QRS-complex on lead III
S
I
: voltage sum from the beginning point to the end
point of QRS-complex on lead I
T electric axis:
S
III
: voltage sum from the beginning point to the end
point of T-wave on lead III
S
I
: voltage sum from the beginning point to the end
point of T-wave on lead I
9 R(V5) Height (voltage value) of R-wave on lead V5
10 S(V1) Height (voltage value) of S-wave on lead V1
Note:
① RR: RR-interval
② Qs: beginning of the Q-wave
③ Ps: beginning of the P-wave
④ Pe: end of the P-wave
⑤ Se: end of the S-wave
⑥ Ts: beginning of the T-wave
⑦ Te: end of the T-wave
⑧ PI: 3.1415926