Blood+Pressure+Instructors+Reference

Instructor’s Reference Blood Pressure In this set of experiments, students will become familiar with auscultation of blood pressure. In addition, they will use the PowerLab to measure systolic blood pressure. Students will examine the changes in peripheral circulation during blood pressure measurement and compare measurements of blood pressure with the arm in different positions. Written by staff of ADInstruments .

Material Provided for the Blood Pressure Laboratory Blood Pressure experiment his pro!ides the step by"step instructions for performing the laboratory and analy#ing the data.

Instructor’s Material Instructor’s Reference (this document)

$ontains information for teachers about troubleshooting, analy#ing data, and altering the student protocols for this experiment. his document also includes the answers to the pre lab %ui#, and suggested answers for the lab report page of  Labutor experiment. Laboratory Handout

$ontains the rele!ant bac&ground material and a summary of the experiments. Ideally this should be pro!ided to the students prior to the class session. Prelab !ui"

his may be used at the instructor’s discretion.

#$uipment List% <ernatives <ernatives PowerLab '( )*L+'+, or PowerLab - )*L+( /inger Pulse ransducer )*L'0'0 )*L'0'0 Sphygmomanometer )*L'' )*L''00 00 Stethoscope $ardio *icrophone )*L-0' *icrophone  )*L-0'

Hard'are substitution he following PowerLab units are compatible with Labutor and will function for this experiment1 e xperiment1 23-(, 23-(, 23-0, 23-0, 2340, 2S, 2SP. 2SP. Page ' of 

5-006 78Instruments

Instructor’s Reference Blood Pressure roubleshootin *afety 9ou should be familiar with the rele!ant safety notes at the start of the hardware manual.

he finger pulse transducer is perfectly safe when connected to Input ' or Input of a PowerLab. :owe!er, those inputs are not isolated and must not be used for direct electrical connection to human sub;ects.

+arnin his procedure in!ol!es stopping blood flow to the arm. his is potentially dangerous. Please ta&e the following precautions1 . If possible, use more than one !olunteer during the course of the lab session. • •

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&d,ustment and use of the blood pressure cuff  •

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*a&e sure students are familiar with the use of the blood pressure cuff. Some cuffs can be put on ?inside"out’@ and then will not compress the arm when inflated. If this is the problem, re!erse the cuff and try again. :a!e students familiari#e themsel!es with the use of the cuff release !al!e before performing actual measurements. Ae!er inflate the cuff abo!e -00 mm:g. 8o not lea!e the cuff inflated on a !olunteer’s arm for prolonged periods. If a !olunteer complains of discomfort, do not continue measurement. 8eflate the cuff immediately.

-sin a stethoscope •

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*a&e sure the students understand that there are two sides of the rotating endpiece. It is recommended that students use the bell of the stethoscope, rather than the diaphragm, to minimi#e effects of room noise.

Room noise Students need to be made aware that excessi!e noise in the classroom will pre!ent them from hearing