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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. 2
3 Diastolic phase: heart relaxes, BP falls, heart fills with blood Systolic phase : heart contracts, BP rises, heart pumps blood out to the body
Copyright © The McGraw-Hill Companies, Inc. + The average BP, due to the pumping by the heart and resistance in blood vessels decreases as the circulating blood moves away from the heart through the body. Gravity, valves in veins and pumping from contracting of skeletal muscles are some other influences on BP at various places in the body.
Reporting BP 5 Unit of measurement: Millimeters of mercury (mmHg) “LUB” “DUB”
Copyright © The McGraw-Hill Companies, Inc. + Blood Pressure (cont.) Classification of BP for Adults 6 CategorySystolic (mmHg) Diastolic (mmHg) Hypotension< 90<60 Normal and Prehypertension or Stage 1 Hypertension140 – 159Or Stage 2 Hypertension≥ 160or ≥ 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. 7
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. 8 Sounds like: SFIG-moh-m ə -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. 9 Mercury Aneroid Digital
Copyright © The McGraw-Hill Companies, Inc. + Homework: What factors affect HR & BP? Heart RateBlood 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? 11
Copyright © The McGraw-Hill Companies, Inc. + Chapter 9 12
Copyright © The McGraw-Hill Companies, Inc. + Blood Pressure 1.
Blood Pressure What is blood pressure? The pressure of blood against the walls of the blood vessels as it circulates around the body.
LESSON 12 – INTRODUCTION TO BLOOD PRESSURE AND CIRCULATORY SYSTEM.
BLOOD PRESSURE VITAL SIGNS. BLOOD PRESSURE Measurement of the pressure the blood exerts on the arterial wall 2 types of BP measurement Systolic = pressure.
1 Hypertension 2002: An Overview. 2 Leading Risks For Death (World Health Organization 1995)
Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings CH 23- Circulation/Valves/Heart.
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Important Concepts Associated with the Measurement of Blood Pressure.
Blood Pressure. What is the lub dub sound your heart makes?
© 2009 The McGraw-Hill Companies, Inc. All rights reserved Vital Signs: Blood Pressure.
Measuring Blood Pressure Blood pressure is indicates your heart health Blood pressure is indicates your heart health It is determined by the contractions.
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Blood Pressure (BP) The pressure the blood exerts against the inner walls of the blood vessels The pressure the blood exerts against the inner walls of.
Blood Pressure (BP) BP is the pressure (force per unit area) exerted by circulating blood on the walls of blood vessels, and constitutes one of the principal.
Chapter 1 Vital Signs Copyright © The McGraw-Hill Companies, Inc.
BLOOD PRESSURE MEASUREMENT OF THE PRESSURE THAT THE BLOOD EXERTS ON THE WALLS OF THE ARTERIES DURING THE VARIOUS STAGES OF HEART ACTIVITY. –AS THE HEART.
NOTES: UNIT 6- The Circulatory System part 4 Blood Pressure.
12.2 Monitoring the Human Circulatory System Within the heart, the sinoatrial (SA) node (the pacemaker) stimulates.
The Circulatory System of Humans What is that ‘lub dub, lub, dub’ noise in my chest? The noise is the sound of your heart as it pumps blood.
Regulation of the Heartbeat Pacemaker A specific region of your heart muscle sets the rate at which your heart contracts.
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Blood Vessels: The Vascular System Transport blood to the tissues and back.
What Is Blood Pressure? Blood pressure is the force of blood pushing against the arteries. Blood is carried to all parts of your body in vessels called.
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12.2-Monitoring the Circulatory System SBI 3U1. The Cardiac Cycle systole = contraction diastole = relaxation The SA node sends out an electrical stimulus.
Blood Vessels & Circulation Chapter 13. Types of Blood Vessels Arteries – Blood vessels that carry blood away from the heart Capillaries – microscopic.
Blood Pressure Heart Rate What is it? The force the heart exerts against the walls of arteries as it pumps the blood out to the body The number of times.
Exercise 22: Human Cardiovascular Physiology- Blood Pressure and Pulse Determination.
Blood Pressure. What Causes Blood Pressure? Blood is a fluid. As fluids move through a pipe there is pressure exerted on the wall of the pipe. This pressure.
Internal Transport Gastrovascular cavity makes circulatory system unnecessaryGastrovascular cavity makes circulatory system unnecessary Open and closed.
Understand the concept of the heart as a double pump Identify what are the immediate effect of exercise on the cardiovascular system Cardiovascular System.
Have you ever thought about the sound you hear on a stethoscope. What is the “lub dub” sound?
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33.1 Overview Blood circulates through our entire body - Internal transportation Blood is pumped by heart and carries…. Oxygen Nutrients Hormones.
8/04/2013 SHMD 139. Blood pressure is the pressure the blood exerts on the artery walls Blood pressure (BP) is the result of the heart contracting and.
Blood Circulation Physiology. Vascular System O Blood circulates inside blood vessels O Comprises the vascular system O Arteries O Carries blood AWAY.
Also called the circulatory system, it consists of the heart, blood vessels, and blood. It carries needed substances to cells and carries waste products.
Notes on Blood Pressure. How is blood flow measured in a given period? Cardiac Output: the amount of blood that the heart pumps into the aorta each minute.
Animal Anatomy & Physiology. Functions of the Cardiovascular System: delivers vital nutrients (e.g., oxygen) to all body cells eliminates waste products.
Blood Pressure Normal BP varies by age, but is approximately 120 mm Hg systolic over 80 mmHg diastolic in a healthy young adult ( in females, the pressures.
Chapter 11 – Part 5 The Cardiovascular System. Vital Signs The following measurements are referred to collectively as vital signs in clinical settings:
MEASURING BLOOD PRESSURE. Blood Pressure (BP) The pressure the blood exerts against the inner walls of the blood vessels The pressure the blood exerts.
Measuring and Recording a Blood Pressure. Blood Pressure (BP) is one of the four vital signs you will be required to take. It is important that your recording.
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