Biomedical Engineering Reference
In-Depth Information
The event
P_Wave_assessment_Broad_Yes
is used to trace the heart condition for
the left atrial enlargement (LAE). The guards of this event formalise to assess the
disease from the ECG signal. The guards of this event state that the broad of P-wave
is greater than or equal to 110 ms in leads II and VI, or the diphasic is TRUE in lead
(II or VI), and the heart state is in abnormal state.
EVENT P
_
Wave
_
assessment
_
Broad
_
Ye s
WHEN
grd1
:
(P
_
Wa v e
_
Broad(II)
≥
110
∧
P
_
Wa v e
_
Broad(V
1
)
≥
110
)
∨
Diphasic(II)
=
TRUE
∨
Diphasic(V
1
)
=
TRUE
grd2
:
Heart
_
State
=
KO
THEN
act1
:
Disease
_
step
6
:=
LAE
END
The event
P_Wave_assessment_Broad_Yes_Check_LAE
is refinement of
P_
Wave_assessment_Broad_Yes
and it is used to identify the several diseases (mi-
tral stenosis, mitral regurgitation, LV failure, dilated cardiomyopathy, LVH cause).
The guards of this event state that the broad of P-wave is greater than or equal to
110 ms in leads II and VI, or the diphasic is TRUE in lead (II or VI), the heart state
is in abnormal state, and the traced disease be equivalent to LAE.
EVENT
P_Wave_assessment_Broad_Yes_Check_LAE
Refines P
_
Wave
_
assessment
_
Broad
_
Ye s
WHEN
grd1
:
(P
_
Wa v e
_
Broad(II)
≥
110
∧
P
_
Wa v e
_
Broad(V
1
)
≥
110
)
∨
Diphasic(II)
=
TRUE
∨
Diphasic(V
1
)
=
TRUE
grd2
:
Heart
_
State
=
KO
grd3
:
Disease
_
step
6
=
LAE
THEN
act1
:
Disease
_
step
6
mitral
_
stenosis, mitral
_
regurgitation, LV
_
failure,
dilated
_
cardiomyopathy, LVH
_
cause
:∈ {
}
END
10.5.7 Sixth Refinement: Assess for Left and Right Ventricular
Hypertrophy
The Left Ventricular Hypertrophy (LVH) and Right Ventricular Hypertrophy (RVH)
are assessed by this refinement. The criteria for LVH and RVH are not applica-
ble if the bundle branch block is present [
16
]. Thus, it is essential to exclude the
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