Biomedical Engineering Reference
In-Depth Information
in all leads, or the normal state of Q-wave is FALSE, and the heart is in abnormal
state.
EVENT T
_
Wave
_
Assessment
_
Inverted
_
Ye s
WHEN
grd1
:∀
l
·
l
∈
LEADS
⇒
T
_
Wa v e
_
State(l)
=
Inverted
grd2
:∀
l
·
l
∈
LEADS
⇒
ST
_
elevation(l)
=
TRUE
Q
_
Normal
_
Status
=
FA L S E
grd3
:
Heart
_
State
=
KO
THEN
act1
:
Disease
_
step
8
:∈ {
Definite
_
ischemia, Probable
_
ischemia, Digitalis
_
effect
}
END
The event
T_Wave_Assessment_Inverted_No
is used to trace the condition of
nonspecific of the heart using ECG signal. The guards of this event specify that
the state of T-wave is inverted and the ST elevation is FALSE in all leads, or the
normal state of Q-wave is TRUE, and the heart is in abnormal state.
EVENT T
_
Wave
_
Assessment
_
Inverted
_
No
WHEN
grd1
:∀
l
·
l
∈
LEADS
⇒
T
_
Wa v e
_
State(l)
=
Inverted
grd2
:∀
l
·
l
∈
LEADS
⇒
ST
_
elevation(l)
=
FA L S E
Q
_
Normal
_
Status
=
TRUE
:
Heart
_
State
=
KO
grd3
THEN
act1
:
Disease
_
step
8
:=
Nonspecific
END
The event
T_Wave_Assessment_Inverted_Yes_PM
is used to find the symptoms
for pulmonary embolism from the ECG signal. A set of guards is used that specifies
underlined conditions for the pulmonary embolism. The guards of this event state
that the peak of P-wave is greater than or equal to 3000 µm in leads II and VI,
through the previous assessment RAE has been identified, the state of T-wave is
inverted and the ST elevation is TRUE in all leads or the normal state of Q-wave is
FALSE, the ST elevation is TRUE and the ST segment elevation is greater than or
equal to 1000 µm, or the abnormal shape of ST segment is FALSE in anyone lead,
or the ST elevation is FALSE and the ST segment elevation is less than 1000 µm,
or the abnormal shape of ST segment is FALSE in any two leads, the Asymmetric
T inversion strain is TRUE in leads V1 to V3, and the normal state of T-wave is
FALSE.
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