auscultatory method

8/18/2019 Auscultatory Method

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Auscultatory Method

Group 2: Briones, Botones,Cabading


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Blood pressure

•Is the force/pressure of the bloodpushing againsts the walls of thearteries

• With each hearbeat, blood isbeing puped out into ourarteries and throughout thebody,


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Blood !ressure

• "he lainar #ow that norallyoccurs in arteries produces little$ibration of the arterial wall andtherefore no sounds% 'owe$er,

when an artery is partiallyconstricted, blood #ow becoesturbulent, causing the artery to

$ibrate and produce sounds%


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Blood !ressure

•

When easuring blood pressure using thauscultation ethod, turbulent blood #ow woccur when the cu( pressure is greater thathe diastolic pressure and less than the systolpressure% "he )tapping) sounds associate

with the turbulent #ow are *nown as Korotkosounds% +eeber that these sounds are noto be confused with the heart sounds produceby the opening and closing of the heart $al$es%


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Blood !ressure

Bernoulli’sPrinciple


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ystolic $s -iastolic

•

.2/0 1 top nuber is the systolicpressure and the botto is thediastolic

• ystolic pressure is the pressure on

the arteries as the heart contractsand pups blood

• -iastolic pressure is the pressure onthe arteries when the heart is at rest

in between heartbeats


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Auscultatory Method

•

Also *nown as the +i$a +occiorot*o( or anual ethod forblood pressure easureent

• Is the 3I"45I5G of orot*o(sounds in the brachial artery

• 'ealthcare pro$ider uses asphygoanoeter


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orot*o( ounds• 6"apping7 sounds heard with a

sthethoscope as the cu( is de#ated

• Classi8ed into 8$e di(erent phases9., 2, ;,


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!rocedure

.% 3et the sub?ect rest for ; inutes anddeterine the blood pressure% Applystethoscope at antecubital fossa o$erthe brachial artery 9edial side of thear>

2% In#ate the bag with rubber bulb at apressure higher than the e@pectedsystolic pressure and no soundaudible through the stethoscope


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!rocedure

;% -e#ate the bag slowly and 2 to


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+esults• ../= 'g


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!IB34 +C4 D4+++

Errors in blood pressure readings:

• "he cuf is not o the proper size: if the cu( is toothe blood pressure readings ay be artefactually highcu( is too big, the readings ay be artefactually low%

•

"he cu( is positioned too loosely: the blood pressuray be artefactually high%

• "he centre of the cu( bladder is not positioned ovebrachial artery%


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!IB34 +C4 D4+++

• "he cu( is inated slowly: a slow in#ation causes $congestion, which in turn causes the orot*o( sounds to bethis results in false readings with the systolic $alue being tand the diastolic reading too high%

• If the cu( is reinated i!!ediately ater an initial r

9trying to rechec* the reading>: a rapid rein#ation could$enous distension, the orot*o( sounds becoe ore "he initial orot*o( sound ay be issed so the systolic rwould be falsely low, and the diastolic reading would be high because the last orot*o( sounds could not be heard%


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C5C3I5

•

"he auscultatory ethod has beenstandard ethod of deterining B!o$er . years and relies on obser$er to detect the audible sou

9orot*o( sounds> that occur duconstricted blood #ow% !roper traininobser$ers, positioning of the patient,

selection of cu( sie are all essential%

auscultatory method

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