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7 QTc



P/QRS/T electric

axis

Electric axis formula:

180

S),S(S arctan(2.0

III

××+×

⑧

P electric axis:

III

: voltage sum from the beginning point to the end

point of P-wave on lead III

: voltage sum from the beginning point to the end

point of P-wave on lead I

QRS electric axis:

III

: voltage sum from the beginning point to the end

point of QRS-complex on lead III

: voltage sum from the beginning point to the end

point of QRS-complex on lead I

T electric axis:

III

: voltage sum from the beginning point to the end

point of T-wave on lead III

: 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

Gima CARDIOPOCKET ECG User Manual

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