Copyright © The McGraw-Hill Companies, Inc. + Blood Pressure 1.
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Transcript of Copyright © The McGraw-Hill Companies, Inc. + Blood Pressure 1.
Copyright © The McGraw-Hill Companies, Inc.
+Blood Pressure
1
Copyright © The McGraw-Hill Companies, Inc.
+ Blood Pressure
Blood pressure (BP) is the pressure or tension exerted on the arterial walls as blood pulsates through them (principal vital sign)
Systolic blood pressure (SBP) – pressure exerted on the arteries during the contraction phase of the heartbeat.
Diastolic blood pressure (DBP) – the resting pressure on the arteries as the heart relaxes between contractions.
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Diastolic phase: heart relaxes, BP falls, heart fills with blood
Systolic phase : heart contracts, BP rises, heart pumps blood out to the body
Reporting BP 4
Unit of measurement:Millimeters of mercury (mmHg)
12080
“LUB”
“DUB”
Copyright © The McGraw-Hill Companies, Inc.
+Blood Pressure (cont.)
Classification of BP for Adults
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Category Systolic (mmHg)
Diastolic (mmHg)
Hypotension < 90 <60
Normal 90 - 119 and 60 - 79
Prehypertension 120 - 139 or 80 - 89
Stage 1 Hypertension
140 – 159 Or 90 -99
Stage 2 Hypertension
≥ 160 or ≥ 100
Copyright © The McGraw-Hill Companies, Inc.
+Blood Pressure (cont.)
Sites for Blood Pressure Assessment Brachial artery – taken on the upper arm;
most common site. Radial artery – taken on the lower arm;
possible site for infants or clients who have very large upper arms.
Popliteal artery– taken on the thigh. Dorsalis pedis and posterior tibial – taken on
the lower leg.
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Copyright © The McGraw-Hill Companies, Inc.
+Blood Pressure (cont.)
Equipment for Measuring Blood Pressure Blood pressure is measured using a
sphygmomanometer, also called a BP cuff, or cuff.
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Sounds like: SFIG-moh-mə-NOM-i-ter
Copyright © The McGraw-Hill Companies, Inc.
+ Blood Pressure (cont.)
Equipment for Measuring Blood Pressure
Types of Sphygmomanometers Mercury – has a calibrated glass tube
containing mercury. Aneroid – has a calibrated dial with a
needle that points to numbers on the
face of the dial. Electronic – uses a digital display and
usually includes the pulse rate.
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Mercury
Aneroid
Digital
Copyright © The McGraw-Hill Companies, Inc.
+ Homework:What factors affect HR & BP?
Heart Rate Blood Pressure
Copyright © The McGraw-Hill Companies, Inc.
+Scientific Investigation
Inquiry Question:
Variables:
Independent Variable: What will be manipulated?
Dependent Variable: What will be affected?
Control: What will we compare our results to?
OR What will remain constant?
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Copyright © The McGraw-Hill Companies, Inc.
+
Chapter 9
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