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BLOOD$PRESSURE%SENSOR&BT17i!
USER’S!GUIDE!
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CENTRE FOR MICROCOMPUTER APPLICATIONS
http://www.cma-science.nl
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Short!description!
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Important :!!
The$Blood$Pressure$sensor$is$not$appropriate$for$medical$applications.$This$sensor$is$to$
be$used$only$for$educational$purposes.$Read$this$man ua l$before$you$start$measu rem ents$
with$the$sensor.$Notice$that$over$inflation$of$the$cuff$may$cause$pain$and/or$injury.!!
Sensor!recognition!
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Calibration!!
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How!the!Blood!Pressure!Sensor!works!!
1.,About,blood,pressure,,
a+(1-9! )6>3! 3)6(:! ;)6:! :3)! 6(:)(16$! ;$% %& !
<()**+()!C6(1)*!;):7))-!:7%!+:8%*:!C6$+)*E!
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<()**+()=!!
2.,Oscillometric,method,
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Measurements!with!the!Blood!Pressure!sensor!
Safety,instructions,,
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*6?):@!1-*:(+>:1%-*E!
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• a%! -%:! 1-?$6:)!:3)!>+??!:%!6!<()**+()!6;%C)!4[F!88I9=!Over, inflation, of, the, cuff,
may,cause,pain,and/or,injury.!
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)N>))&*!"FF!88I9=!
• P)6*+()8)-:*!71:3!:3)!>+??!6(%+-&!:3)!+<<)(!6(8!*3%+$&!not!take!longer!than! 3!
minutes=!R-!6-@!>6*)!&)?$6:)!:3)!>+??!188)&16:)$@!+*1-9!:3)!>%-:(%$!C6$C)!73)-!:3)!
Figure,1.$Pressure$course$of$the$heart$beat$in$
the$brachial$artery.$$
M!|!BT17i!#$%%&!'()**+()!,)-*%(!.*)(/*!0+1&)!!
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1-&1C1&+6$=!
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Placing,the,cu ff ,a ro u n d ,t h e,upper,arm,
c3)-!<)(?%(81-9!;$%%&!<()**+()!8)6*+()8)-:*J!1:!1*!;)*:!:%!7%(b!71:3!6!<6(:-)(=!
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4= O%--)>:!:3)!#$%%&!'()**+()!*)-*%(!:%!
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6(8!6:!>3)*:!3)193:=!!
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<$6>)8)-:=!!
Adjusting,the,control,valve,
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1*!861-:61-)&!6+:%86:1>6$$@!;@! :3)! 1--)(! 8)>36-1*8!%?!:3)!
C6$C)=!!
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6>>+(6:)!8)6*+()8)-:=!
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!
Collecting,data,
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@%+!>6-!*:6(:!@%+(!8)6*+()8)-:=!
Accuracy starts in the name
Page 9
ambidex
Innovative blood pressure cuffs
The cuff has a unique soft edge which replaces the weld found on other cuffs, allowing the ambidex cuff to be
applied to either the left or right arm with equal comfort for the patient.
The air inlet tube is positioned in the centre of the cuff face so that it is always out of the way of the
patient's arm, whether the left or right arm is chosen. This means that there are no tubes to interfere with the
stethoscope during manual measurement, and the tubes are tidy when a patient monitor is used.
Constructed in soft yet robust fabric, which has antimicrobial treatment, these one-piece cuffs come in a full range
of sizes which are based on the recommendations of the British Hypertension Society (www.bhs.org)
Each cuff carries a RANGE marker and ARTERY position indicator, both printed so that they can be read when
using the cuff on either arm.
The Accoson ambidex bladderless blood pressure cuff can be used as a regular cuff, or for single patient
use, and carries a white panel on which a patient's name or the cuff location details can be recorded.
unique soft edge - tube exit on cuff face - latex-free - antimicrobial - easily cleaned - full range of sizes
The Accoson ambidex one-piece cuff has been developed to provide a blood pressure cuff which is easy to use,
clean, multi-purpose and cost-effective.
BT17i!#$%%&!'()**+()!.*)(/*!0+1&)! |!H!
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Important:!The$test$person$must$remain$still$during$data$collection—no$movement$of$
the$arm$or$hand$during$measuremen ts.!
5= ,:6(:!@%+(!8)6*+()8)-:=!!
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Extra,tips,
#$%%&! <()**+()! ()6&1-9*! 71$$! &1??)(! ?(%8! <)(*%-! :%! <)(*%-! 6-&! )C)-! ;):7))-!
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<()**+()!:%!1->()6*)!%(!&)>()6*)=!.*)!:3)!?%$$%71-9!:1<*!:%!:6b)!6>>+(6:)!8)6*+()8)-:*E!!
• 23)!:)*:!<)(*%-/*!6(8!6-&!36-&!8+*:!()861-!*:1$$!&+(1-9!8)6*+()8)-:*i!36-&!%<)-!
^!-%!?1*:j!
• 23)!6(8!*3%+$&!;)!6:!3)6(:!$)C)$!6-&!1*!;)*:!*+<<%(:)&=!
• '(%<)(!<$6>)8)-:!%?!:3)!<()**+()!>+??!71$$!1->()6*)!:3)!6>>+(6>@!%?!@%+(!;$%%&!
<()**+()!8)6*+()8)-:*=!!
• V)8%C)!6-@!>$%:31-9!:36:!86@!>%C)(!%(!>%-*:(1>:!:3)!<%(:1%-!%?!:3)!6(8!;)1-9!
8)6*+()&=!
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<()**+()!1*!:3)!?%(8+$6!4FF!k!69)=!
• #$%%&!<()**+()!C6$+)*!6()!(%+-&)&!:%!H!88I9=!
Determining!the!heart!rate!!
23)!3)6(:!(6:)!A;)6:*!<)(!81-+:)D!>6-!;)!>6$>+$6:)&!+*1-9!:3)!?%$$%71-9!?%(8+$6E!
!
ℎ𝑒𝑎𝑟𝑡 𝑟𝑎𝑡𝑒 =
𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑚𝑎𝑥𝑖𝑚𝑎 − 1
𝑡𝑖𝑚𝑒 𝑜𝑓 𝑡ℎ𝑒 𝑙𝑎𝑠 𝑡 𝑚𝑎𝑥𝑖𝑚𝑢𝑚 − [ 𝑡𝑖𝑚 𝑒 𝑜𝑓 𝑡ℎ𝑒 𝑙𝑎 𝑠𝑡 𝑚𝑎𝑥𝑖𝑚𝑢𝑚 ]
∗ 60!
!
• O%+-:!:3)!-+8;)(!%?!$%>6$!86N186!1-!:3)!&)*>)-&1-9!<6(:!%?!:3)!9(6<3=!!
• R-!6&&1:1%-J!+*)!:3)!*>6-!%<:1%-!:%!()6&!%+ :!:3)!:18 )!%?!:3 )!?1(*:!6- &!:3 )!$6*:!8 6N18 6=!!
• O6$>+$6:)!:3)!3)6(:!(6:)=!!
Determining!the!blood!pressure!!
23)!()*+$:!%?!:3)!8)6*+()8)-:!71:3!:3)!#$%%&!'()**+()!*)-*%(!1* !6!< ()** + ()!C)(*+*!:18 )!
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<()**+()!%?!:3)!>+??=!
1.,Determining,the,blood,pressure,manually,from,the,graph,,
23)! *18<$)! 8):3%&! %?! &):)(81-1-9! :3)! ;$%%&! <()**+()! 1*! 86-+6$$@J! &1()>:$@! ?(%8! :3)!
<()**+()! 9(6<3=! 23)! <%1-:! 6:! 731>3! :3)! $6(9)*:! <()**+()! <+$*)*! 6()! %>>+((1-9!
>%(()*<%-&*!:%!:3)!P)6-!Q(:)(16$!'()**+()!APQ'D=!23)!<%1-:!6;%C)!:3)!8)6-!<()**+()!
6:!731>3!:3)!<()**+()!&1??)()->)!9(%7*!(6<1&$@!>%(()$6:)*!:%!:3)!*@*:%$1>!<()**+()=!23)!
_!|!BT17i!#$%%&!'()**+()!,)-*%(!.*)(/*!0+1&)!!
<%1-:!;)$%7!:3)!8)6-!<()**+()!73)()!:3)!&1??)()->)*!*:6(:!:%!9):!*86$$!>%(()*<%-&*!:%!
:3)!&16*:%$1>!<()**+()=!
!
Figure,2.$A$typical$measurement$with$the$Blood$Pressure$sensor.$
!
4= R&)-:1?@!:3)!$6(9)*:!<()**+()!l<+$*)m=!2 3 1* !1* !6- !)* :18 6 :1 %- !%?! :3 )!P Q'=!!
"= R&)-:1?@! 73)-! :3)! &6:6! ;)91-*! ?%(81-9! (6<1&! l<+$*)*m=! 231*! 1*! 6-! )*:186:1%-! %?! :3)!
*@*:%$1>!<()**+()=!!
G= R&)-:1?@!73)-!:3)! &6:6!*:%<*!?%(81-9!*86$$)(!l<+$*)*m=!231*!1*!6-!)*:186:1%-!%?!:3)!
&16*:%$1>!<()**+()=!
2.,Determining,the,blood,pressure,using,oscillometric,method,,
Q! 8%()! <()>1*)! ;+:! $6;%(1%+*! 8):3%&! :%! &):)(81-)! :3)! ;$%%&! <()**+()! 1*! :3)!
%*>1$$%8):(1>!8):3%&=!23)!<()**+()!<+$*)*J!73)-!)N:(6>:)&!?(%8!:3)! >+??!<()**+()J!?%(8!
6-! %*>1$$6:1-9! 76C)?%(8=! 23)! <)6bB:%B<)6b! 68<$1:+&)*! %?! :31*! 76C)?%(8! C*=! <()**+()!
>()6:)!6!;)$$!*36<)&!l)-C)$%<)!>+(C)m!A*))!?19+()!HD=!c1:31-!:3)!)-C)$%<)J!:3)!<()**+()!
<+$*)!68<$1:+&)*!1->()6*)!+-:1$!86N18+8!68<$1:+&)!1*!()6>3)&!A:31*!<%1-:!>%(()*<%-&*!
:%!:3)!PQ'D=!Q?:)(! :36:!:3)!<+$*)!68<$1:+&)*!&)>()6*)! ?+(:3)(! +-:1$!36(&$@!-%:1>)6;$)=!
0)-)(6$$@J!:3)!*@*:%$1>!;$%%&!<()**+()!1*!?%+-&!;@!&):)(81-1-9!:3)!<%1-:!6$%-9!:31*!;)$$B
*36<)&! )-C)$%<)! ?%(! <()**+()! 6;%C)! PQ'! 6-&! ?%(! 731>3! :3)! C6$+)! %?! :3)! <()**+()!
68<$1:+&)! 1*! HFn! %?! :3)! 86N18+8! 68<$1:+&)! C6$+)=! 23)! &16*:%$1>! ;$%%&! <()**+()! 1*!
?%+-&!+*1-9!:3)!*68)!8):3%&!?%(!<()**+()!;)$%7!PQ'!6-&!36C1-9!6-!68<$1:+&)!C6$+)!
%?!5Hn!%?!:3)!86N18+8!68<$1:+&)!C6$+)=!23)*)!<)(>)-:69)!C6$+)*! 6()! %;:61-)&! ?(%8!
)8<1(1>6$!()*)6(>3=
4
!
c3)-! :31*! 8):3%&! 1*! 6<<$1)&! :%! :3)! 8)6*+()&! <()**+()! 9(6<3J! :3)! ;)$$! *36<)&!
l)-C)$%<)!>+(C)m!1*!)N:(6>:)&!?(%8!:3)!8)6*+()8)-:!9(6<3!6*!:3)!&1??)()->)!9(6<3!%?!
:3)! <+$*)! <()**+()! 9(6<3! A:3)! 86N186$! C6$+)*! %?! :3 )! <()**+()! <+$*)*D! 6 -& ! :3)! >+??!
&)?$)>:1%-! :()-&! <()**+()! 9(6<3=! 231*! <(%>)&+()! 1*! &)*>(1;)&! ;)$%7! 1-! &):61$*! ?%(! :3)!
O%6>3!<(%9(68!*:6(:1-9!?(%8!C)(*1%-!5=G
"
J!1-!M!*:)<*E!!
R= a):)(81-1-9!:3)!>+??!A:()-&D!<()**+()!!
RR= a):)(81-1-9!:3)!<+$*)!<()**+()!!
RRR= a):)(81-1-9!:3)!)-C)$%<)!>+(C)!!
R]= a):)(81-1-9!:3)!;$%%&!<()**+()!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
4
!P)3$*)-!o!):!6$!A4TTTD=!])K$)&)-&)!():-19*$1-1)(!?%(!3K)88);$%&:(@b*8p$1-9=!.9)*b!Yq!e$6(1-9*(6<<%(:!-(=
BT17i!#$%%&!'()**+()!.*)(/*!0+1&)! |!5!
I.,Determining,the,cuff,(trend),pressure,
4= `(%8! :3)! &6:6! :6;$)! &):)(81-)! :3)! -+ 8; )(! %?! :3)! 8)6*+()&! <%1-:*=! R-! :31*!
&)*>(1<:1%-!7)!6**+8)!:36:!:3)!8)6*+()&!&6:6!6()!*:%()&!1-!V+-!4=!!
"= V193:B>$1>b!:3)!9(6<3!6-&!*)$)>:!Analyze/Process$>$Select/Remove$Data.!
G= ,)$)>:! +-&)(! V+-! :3)! %<:1%-! Run$
1! 6-&! *)$)>:! +-&)(! ,)$)>:1%-!
8):3%&!Point-by-point=!
M= P6(b!:3)!C)(@!?1(*:!<%1-:J!C)(@!$6*:!
<%1-:! 6-&! <%1-:*! 73)()! :3)!
<()**+()! C6$+)*! 6()! $%>6$$@!
81-186$=! 23)*)! <%1-:*! 1-&1>6:)!
:3)! &)?$6:1- 9! <()**+()! :()-&! %?!
:3)! >+??! A1=)=! 71:3%+:! :3)! <+$*)*D=!
h%+! 86@! :6b)! )C)(@! *)>%-&!
81-18+8=!
Tip:! R-! O%6>3! @%+! >6-! 86N181L)!
:3)! ,)$)>:fV)8%C)! a6:6! &16$%9=!
`1-&!:3)!<%1-:!73)()!:3)!<()**+()!C6$+)!A&1*<$6@)&!1-!:3)!<()**+()!>%%(&1-6:)!?1)$&D!
1*!$%>6$$@!81-186$=!!
H= P6(b!Keep$selected!6-&!>$1>b!OK=!Q*!:3)!()*+$:!@%+!9):!V+-!"!71:3!%-$@!:3)!*)$)>:)&!
&6:6!<%1-:*=!23)*)!<%1-:*!&):)(81-)!:3)!9(6<3!%?!:3)!:()-&!<()**+()=!
_= 2%!)N:)-&!:3)!-+8;)(!%?!<%1-:*!1-!:3)!9(6<3!@%+!>6-!*8%%:3!:3)!9(6<3=!
• V193:B>$1>b!:3)!9(6<3!6-&!*)$)>:!Analyze/Process$>$Smooth.!!
• ,)$)>:!+-&)(!V+-!:3)!%<:1%-!Run$2!A71:3!:3)!*)$)>:)&!$%7)(!<%1-:*D=!!
• ,)$)>:!:3)!8):3%&!Spline=!!
• O$1>b!Plot!:%!&(67!:3)!*8%%:3!9(6<3=!!
• O$1>b!OK$:%!6>>)<:.!
• 2@<)!:3)!-+8;)(!%?!<%1-:*!%?!:3)!%(191-6$!<()**+()!9(6<3!A&):)(81-)&!1-!*:)<!4D!
1-!:3)!Number$of$Points!?1)$&!6-&!>%-?1(8=!!
• Q*! 6! ()* +$ :! @%+! 9):! 6! -)7! V+-! G! 71:3! 86-@! 8%()! <%1-:*=! 23)*)! 6()! :3)! :()-&!
<()**+()!&6:6=!h%+!>6-!()-68)!:31*!(+-!1-:%!p_trend=!
!
II.,Determining,the,pulse,pressure,
5= V)<)6:! :3)! *:)<*! "! :%! H=! P6(b! :3)!
C)(@! ?1(*:! <%1-:J! C)(@! $6*:! <%1-:! 6-&!
:31*! :18)! 86(b! :3)! 86N186$!
<()**+()! C6$+)*J! :3)! :%<*! %?! :3)!
<+$*)*=! 26b)! :3)! +<<)(! <%1-:*! K+*:!
6?:)(! :3)! $%7)(! <%1-:*J! *% ! @%+! 71$$!
9):! )N6>:$@! :3)! *68)! -+8;)(! %?!
*)$)>:)&!&6:6!A*))!?19+()!G!6-&!MD=!!
[= Q*!:3 )!()*+$:!@%+!9):!V+-!M!71:3!:3)!
*)$)>:)&! +<<)(! &6:6! <%1-:*=! ! 23)*)!
6()!:3)!<()**+()!<+$*)*=!
T= V)<)6:!*:)<!_!:%!*8%%:3!:3)!&6:6=!
Q*!:3)!()*+$:!@%+!9):!V+-!H!71:3!
Figure, 4.$ Select$ the$ points$ at$ which$ the$ pressure$
value$is$maximal,$just$when$pressure$signal$rises.$!
Figure,3.$Select$the$points$at$which$the$pressure$value$
is$minimal,$just$before$the$pressure$signal$rises$again.$
[!|!BT17i!#$%%&!'()**+()!,)-*%(!.*)(/*!0+1&)!!
8%()!<%1-:*=!23)*)!6()!:3)!<+$*)!<()**+()!&6:6J!@%+!>6-!()-68)!:31*!(+-!1-:%!
p_pulse=!
III.,Determining,the,envelo pe ,cu rve , ,
4F= 2%!;)!6;$)!:%!>6$>+$6:)!:3)! <()**+()!&1??)()->)!?1(*:!>%<@!:3)!<()**+ ()!&6:6!?(%8!V+-!
G!p_trend!1-:%!V+-!H!p_pulse=!!
• ,)$)>:!6!&6:6!*)(1)*!A6:!:3)!(193:!*1&)!%?!:3)!:6;$)D!%(!*)$)>:!6!>)$$!1-!6!>%$+8-!%?!
:3)!&6:6!*)(1)*!%?!V+-!G=!!
• c3)-!@%+!*:6(:!:%!&(69! 6!C6(16;$)!3)6&1-9!p!:3)!>+ (*%(!>36-9)*!1-:%!6!9(6<3!1>%-=!
O%-:1-+)!&(6991-9!+-:1$!@%+!<$6>)!:3)!>+(*%(!%C)(!(+-!-+8;)(!HJ!6:!:3)!$)?:!*1&)!
%?!:3)!:6;$)!A:%!:31*!(+-!@%+!6()!>%<@1-9!:3)!&6:6D=!
• c3)-!:3)!(+-!-+8;)(!1*!*)$)>:)&!A6!;$+)!?(68)!6<<)6(*D!()$)6*)!:3)!1>%-=!Q!-)7!
C6(16;$)!>%$+8-!71:3!:3)!3)6&1-9!Copied$of$p(mmHg)!71$$!;)!6&&)&!:%!V+-!H=!!
• 23)!&6:6!<%1-:*!?(%8!:3)!>%$+8-!p$(mmHg)!%?!V+-!G!6()!-%7!>%<1)&!1-:%!6!-)7!
>%$+8-! Copy$ of$ p$ (mmHg)! %?!V+-!H=! h%+! >6-! *))! 1:!;@! %<)-1-9! V+-! H =! h%+! >6-!
()-68)! :3)! C6(16;$)*! :%! ()?$)>:! :3)! 6;%C)E! p$ :%! p_pulse! 6-&! Copy$ of$ p$ 1-:%!
p_trend=!!!
44= O6$>+$6:)!6!-)7!C6(16;$)!p_difference=!!
• V193:B>$1>b! :3)! a6:6! 26;$)! 6-&! *)$)>:! Add$ a$ new$ variable$ >$ Into$ Data$ Series$ >$
Formula=!!!
• 01C)!:3 1*!C6(16;$)!:3)!-68)!p_difference$6-&!+-1:$mmHg!6-&!)-:)(!:3)!?%(8+$6E!
p_pulse$–$p_trend=!231*!>6$>+$6:)*!:3)!<()**+()!&1??)()->)=!!
4"= O()6:)!6!-)7!9(6<3!Envelope!curveJ!731>3!&1*<$6@*! p-difference!6961-*:!p-trend =!23)!
()*+$:1-9!9(6<3!36*!6!;)$$B*36<)!?% (8=!!
4G= .*)!:3)!?+->:1%-!?1:!%<:1%-!:%!6<<(%N186:)!:3)!9(6<3!71:3!6!?+->:1%-=!!
• V193:B>$1>b! :3)! p-difference! C*=! p-trend$ ! 9(6<3! 6-&! *)$)>:! Analyze/Process$ >$
Function$fit.$!
• ,)$)>:!+-&)(!V+-!:3)!%<:1%-!Run$5!A73)()!:3)!>6$>+$6:1%- *!7)()!86&)D=!!
• ,)$)>:!:3)!?+->:1%-!f(x)=a*exp(-(bx+c)
2
)+d=!
• '()**!Estimate.,R?!- )> )** 6(@!86-+6$$@!6&K+*:!:3)!1-&1C1 &+ 6 $!<6(68):)(!C6$+)*!6-&!
<()**! Refine., '()**! OK! 73)-! @%+! 6()! *6:1*?1)&! 71:3! :3)! ()*+$:=! 23)! ?1:! 71$$! ;)!
6&&)&!6*!6!-)7!C6(16;$)!Fit of p_difference5!1-!:3)!9(6<3=!
IV.,Determining,the,blood,pressure,
23)!;$%%&!<()**+()! C6$+)*!>6-!;)!&):)(81-)&!&1()>:$@! ?(%8!:3)!)-C)$%<)!>+(C)!%(!C16!1:*!
&)(1C6:1C)!9(6<3=!!
Method,1,-,directly,from,the,Envelope,curve,(see,figure,5) :,,
4M= .*)! :3)! ,>6-! %<:1%-! :%! ()6&! :3)! 3193)*:! <%1-:! 1-! :3)! )-C)$%<)! >+(C)=! 231*! <%1-:!
>%(()*<%-&*!:%!:3)!P)6-!Q(:)(16$!'()**+()!APQ'D=!!
4H= a):)(81-)!:3)!*@*:%$1>!6-&!&16*:%$1>!<()**+()*=!!
- 23)!*@*:%$1>!;$%%&!<()**+()!1*!?%+ -& !6*!:3)!<()**+()!C6$+)!6:!:3)!<%1-:!6$%-9!:31*!
;)$$B*36<)&!)-C)$%<)!?% (!<()**+()!6; %C)!P Q' J!?%(!731 > 3!:3)!<()**+()!&1??)()->)!
C6$+)!1*!HFn!%?!:3)!<()**+()!&1??)()->)!>%(()*<%-&1-9!:%!PQ'=!
- 23)!&16*:%$1>! ;$%%&!<()**+()!1*!?%+-&!6*!:3)!<()**+()!C6$+)!6:!:3)!<%1-:! 6$%- 9!:31*!
;)$$B*36<)&!)- C)$%< )!?%(!<()**+()!;)$%7!PQ'J!?%(!731>3!:3)!<()**+()!&1??)()->)!
C6$+)!1*!5Hn!%?!:3)!<()**+()!&1??)()->)!>%(()*<%-&1-9!:%!PQ'=!
BT17i!#$%%&!'()**+()!.*)(/*!0+1&)! |!T!
!
Method,2,–,via,derivative,graph,,
4M= V193:B>$1>b!:3)!p-difference!C*=!p-trend$9(6<3!6-&!*)$)>:!Analyze/Process$>$Derivative.$!
4H= ,)$)>:!+-&)(!V+-!:3)!%<:1%-!Run$5=!!
4_= ,)$)>:!+-&)(!]6(16;$)!:3)!C6(16;$)!Fit$of$p_difference5!
17. ,)$)>:!+-&)(!W(&)(!First$derivative$6-&!+-&)(!P):3%&!Differences=!
4[= O$1>b!Plot=!!
4T= Q>>)<:!71:3!We=!!
"F= O$1>b!6!<6-)!:%!<$6>)!:3)!a)(1C6:1C)!9(6<3=!!
"4= .*)!:3)!Scan,?+->:1%-!:%!()6&!%+:!:3)!;$%%&!<()**+()!C6$+)*=!!
- 23)!<()**+()!C6$+)! %?!:3)!1-:)(*)>:1%-!%?!:3)! &)(1C6:1C)!71:3!:3)!3%(1L%-:6$!6N1*!
>%(()*<%-&*!:%!:3)!PQ'!C6$+)=!!
- 23)! <()**+()! C6$+)! %?! :3)! 81-18+8! %?! :3)! &)(1C6:1C)! 9(6<3! >%(()*<%-&*! :%! :3)!
*@*:%$1>!<()**+()=!!
- 23)!<()**+()!C6$+)!%?!:3)!8 6N18+ 8! %?!:3)!&)(1C6:1C)! 9(6<3!>%(()*<%-&*!:%! :3)!
&16*:%$1>!<()**+()=!!
Figure, 5 :$ A$ bell$ shaped$ “envelope$ curve”$ vs.$ the$ trend$ pressure.$ As$ blood$ pressure$ values$ are$
usually$rounded$to$5$mmHg$we$find$a$blood$pressure$of$120/80.$A$best-fit$bell-shap e$envelope$is$
drawn$in$the$graph$to$find$the$maximum$(MAP).$
4F!|!BT17i!#$%%&!'()**+()!,)-*%(!.*)(/*!0+1&)!!
Reference!values!
23)!:6;$)!;)$%7!1-&1>6:)*! -%(86$! 3)6(:! ?()X+)->@! 6-&! ;$%%&! <()**+()! C6$+)*! ?%(! ;%@*!
6-&!91($*!?%(!69)*!;):7))-!4FB4T!@)6(*!%$&=!!
!
!
Age
Heart frequency per
minute
Systolic pressure average ±
SD
Diastolic pressure average ±
SD
boys
girls
boys
girls
boys
girls
10 jr
132
129
108±12
109±13
67± 9
64±11
11 jr
160
131
109±11
110±12
65±11
66±10
12 jr
150
147
111±13
114±14
65±10
68±10
13 jr
144
141
116±14
116±14
66±11
68±10
14 jr
127
143
118±14
116±12
66±10
69± 8
15 jr
128
127
123±14
116±11
66±11
68±11
16 jr
106
135
125±14
118±12
68±11
69± 9
17 jr
107
115
126±13
121±13
70±11
70±10
18 jr
85
85
129±15
122±14
71± 9
71±11
19 jr
94
77
131±15
120±12
71±10
70±10
!
Table!1:!`(%8E!C6-!&)-!#(6-&)J!I)@86-*!r!P%--)-*J!KindergeneeskundeJ!S$*)C1)(!
!
!
Suggested!experiments!!!
23)!?%$$%71-9!)N<)(18)-:*!>6-!;)!<)(?%(8)&!71:3!:3)!#$%%&!'()**+()!*)-*%(E!!
• .*1-9!:3)!%*>1$$%8):(1>!8):3%&!:%!>6$>+$6:)!;$%%&!<()**+()=!!
• P)6*+()!;$%%&!<()**+()!;)?%()!6-&!6?:)(!)N)(>1*)!6-&!731$)!*1::1-9!%(!*:6-&1-9i!
• O%8<6()!;$%%&!<()**+()!6?:)(!C%$+-:6(@!1*%8):(1>!>%-:(6>:1%-*!A7)193:!$1?:1-9D!6- &!6!
(3@:381>!6>:1C1:@!*+>3!6*!(+--1 - 9!% (!;1 b1- 9 i!
• ,:+&@!:3)!)??)>:!%?!>6??)1-)!%-!;$%%&!<()**+()=!
BT17i!#$%%&!'()**+()!.*)(/*!0+1&)! |!44!
Technical!Specifications!
!
Sensor$kind$
Q-6$%9J!9)-)(6:)*!6-!%+:<+:!C%$:69)!;):7))-!F!6-&!H!]!!
Measurement$range!
F!==!G5H!88I9!
Resolution$$
F=4!88I9!
Calibration$function$
<!A88!I9D!Z![G=GM!\!]
%+:
A]D!^!4_=_5!
Max.$pressure$
4HFF!88!I9!!
Temperature$compensated$
BFsO!:%