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>
then BP:=Hypertension1
>
elif SBP>=120 or DBP>=80
>
then BP:=Prehypertension
>
else BP:=Normal
>
fi;
>
NULL;
>
end:
Observe that, comparing with the tables, the nesting has been done from
bottom to top, so that shorter conditions (almost identical to those in the original
table) could be used.
6.2
Translation of the Adapted CVD Classification Table
to a Set of Production Rules
The information in Table 6 can also be translated as a set of rules. We list after-
wards some condensed ones (we have include OR connectives in the antecedents
in order to shorten the number of rules, although this doesn't agree the definition
in Section 5):
IF BP=Normal OR BP=Prehypertension THEN Low
IF ACA AND (BP = St.1 Hyp. OR BP = St.2a Hyp. OR BP = St.2b Hyp.)
THEN Very High
¬ACA AND (nCVDRF > 0 OR TOD OR DM) THEN Very High.
IF
IF
¬
ACA AND nCVDRF = 0 AND
¬
TOD AND
¬
DM THEN High.
...
For the sake of brevity, the corresponding Maple code is not included (it has
also been implemented using nested conditionals).
6.3
Translating the Kind of Treatment
As mentioned in section 2.3, the kind of treatment is based in the BP of the
patient, but a distinction in the borders between regions is made if the patient
suffers from diabetes or chronic kidney disease by the authors of [10, 11]. The
different recommendations were detailed in Section 2.3. The computational ap-
proach is similar to those described in sections 6.1 and 6.2.
6.4
Specific Therapy Options
For instance, in [10, 11] the kind of treatment is based on the possible occur-
rence of other pathologies suffered by the patient. Of the different initial ther-
apy options: THIAZ (thiazide diuretic), ACEI (angiotensin converting enzime
inhibitor), ARB (angiotensin receptor blocker), BB (beta blocker) CCB (calcium
channel blocker), ALDO ANT (aldosterone antagonist), only some are adequate
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