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Blood Pressure

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  1. Blood Pressure

  2. What is blood pressure? • Arterial blood pressure = force exerted by blood on an area of the blood vessel wall • Systolic = pressure or force during contraction • Diastolic = pressure or force during relaxation • PulsePressure = difference between SBP and DBP

  3. Equipment Used • Mercury Manometer • Anaeroid Manometer • Automated Digital Manometer • Doppler Ultrasound • Catheter

  4. BP Assessment Procedures • See pg. 43 ACSM

  5. Potential Sources of Error • Inaccurate sphygmomanometer • Improper cuff size • Auditory acuity of technician • Rate of inflation/deflation • Technician experience • Technician reaction time • Improper stethoscope placement or pressure • Background noise

  6. Potential Sources of Error, con’t. • Allowing patient to hold treadmill handles • Physiologic abnormalities (stiff brachial artery, etc.)

  7. BP Classifications • Page 44 ACSM

  8. Contraindications to Exercise Testing • P. 49-50 ACSM • Resting SBP > 200 mm Hg or DBP > 110 mm Hg

  9. Normal Responses • SBP should increase linearly with exercise intensity • DBP should not change or may drop slightly

  10. Test Termination Criteria • Indications for Terminating a Test (p. 106 ACSM) • SBP > 260 mm Hg • DBP > 115 mm Hg • In low-risk adults, SBP drops by 20 mm Hg or more or fails to rise with exercise intensity • In moderate to high-risk patients, if SBP drops 10 mm Hg or more, or fails to rise

  11. BP Assignment • To measure seated, standing and supine resting blood pressures on all class members • To measure bike and treadmill exercise blood pressures on all class members