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Lippincott Williams & Wilkins’ Comprehensive Medical Assisting (Third Edition) Lesson Plans Chapter 19 — Anthropometric Measurements and Vital Signs Goals of the Lesson: Cognitive: The student will understand measurement of height, weight, temperature, pulse and respiration rates, and blood pressure. Motor: The student will learn to measure and record height, weight, temperature, pulse and respiration rates, and blood pressure. Learning Objectives: The lesson plan for each objective and the related procedures begins on the page shown below. Learning Objective 19-1: Spell and define the key terms. ............................................................................................................................. 4 Learning Objective 19-2: Explain the procedures for measuring a patient’s height and weight................................................................... 5 Procedure 19-1: Measuring Weight .................................................................................................................................................................5 Procedure 19-2: Measuring Height ..................................................................................................................................................................5 Learning Objective 19-3: Identify and describe the types of thermometers. ................................................................................................ 6 Learning Objective 19-4: Compare the procedures for measuring a patient’s temperature using the oral, rectal, axillary, and tympanic methods. ......................................................................................................................................................................................................... 9 Procedure 19-3: Measuring Oral Temperature Using a Glass Mercury Thermometer .................................................................................... 9 Procedure 19-4: Measuring a Rectal Temperature ........................................................................................................................................... 9 Procedure 19-5: Measuring an Axillary Temperature ...................................................................................................................................... 9 Procedure 19-6: Measuring Temperature Using an Electronic Thermometer..................................................................................................9 Procedure 19-7: Measuring Temperature Using a Tympanic Thermometer ....................................................................................................9 Procedure 19-8: Measuring Temperature Using a Temporal Artery Thermometer ......................................................................................... 9 Learning Objective 19-5: List the fever process, including the stages of fever. ......................................................................................... 12 Learning Objective 19-6: Describe the procedure for measuring a patient’s pulse and respiratory rate..................................................... 14 Procedure 19-9: Measuring the Radial Pulse ................................................................................................................................................. 14 Procedure 19-10: Measuring Respirations ..................................................................................................................................................... 14 Learning Objective 19-7: Identify the various sites on the body used for palpating a pulse....................................................................... 17 Learning Objective 19-8: Define Korotkoff sounds and the five phases of blood pressure. ....................................................................... 18 Procedure 19-11: Measuring the Blood Pressure ........................................................................................................................................... 18 Learning Objective 19-9: Identify factors that may influence the blood pressure. ..................................................................................... 20 Learning Objective 19-10: Explain the factors to consider when choosing the correct blood pressure cuff size. ...................................... 21 Page 19-1 Copyright © 2008 Lippincott Williams & Wilkins Selected Key Terms afebrile anthropometric apnea baseline calibrated cardiac cycle cardiac output cardinal signs diastole diaphoresis dyspnea febrile hyperpyrexia hypertension hyperventilation hypopnea intermittent orthopnea palpation postural hypotension pyrexia relapsing fever remittent sphygmomanometer sustained fever systole Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Performance Objectives: The performance objectives are incorporated into the learning objective lesson plans shown above. Performance Objective 19-1: Measure and record a patient’s weight (Procedure19-1) ......................................................................... 19-4 Performance Objective 19-2: Measure and record a patient’s height (Procedure 19-2) ......................................................................... 19-4 Performance Objective 19-3: Measure and record a patient’s oral temperature using a glass mercury thermometer (Procedure 21-3) 19-8 Performance Objective19-4: Measure and record a patient’s rectal temperature.(Procedure 19-4) 19-8 Performance Objective 19-5: Measure and record a patient’s axillary temperature.(Procedure 19-5) ................................................... 19-8 Performance Objective 19-6: Measure and record a patient’s temperature using an electronic thermometer (Procedure 19-6) ............ 19-8 Performance Objective 19-7: Measure and record a patient’s temperature using a tympanic thermometer (Procedure 19-7) ............... 19-8 Performance Objective 19-8: Measure and record a patient’s temperature using a temporal artery thermometer (Procedure 19-8) ..... 19-8 Performance Objective 19-9: Measure and record a patient’s radial pulse (Procedure 19-9) ............................................................... 19-13 Performance Objective 19-10: Measure and record a patient’s respirations (Procedure 19-10) ........................................................... 19-13 Performance Objective 19-11: Measure and record a patient’s blood pressure (Procedure 19-11) ...................................................... 19-17 You Will Need: Gather the following materials for the following lessons: 19-2 Calibrated balance beam scale, digital scale or dial scale; paper towel; scale with a ruler 19-4 Glass mercury oral and rectal thermometer; tissues or cotton balls; disposable plastic sheath; gloves; cool, soapy water; disinfectant solution; surgical lubricant; electronic thermometer with oral or rectal probe, disposable probe cover; tympanic thermometer, disposable probe covers; biohazard container; temporal artery thermometer, alcohol wipes. 19-6 Watches with sweep second hands. 19-8 Sphygmomanometer, stethoscope. 19-9 Oral thermometers with plastic sheaths, watch with sweep second hand, sphygmomanometer, stethoscope. Instructor’s Note: The Premium Online Course for Comprehensive Medical Assisting is not automatic with course adoption. Instructors must request that students purchase the online course. However, reference to online course content is included within these Lesson Plans for those Instructors who have directed their students to purchase the Premium Online Course. A complete DVD of 45 videos showing procedures and techniques described in Comprehensive Medical Assisting is available for purchase from Lippincott Williams & Wilkins. Go to thePoint.lww.com/Kronenberger3e to order the DVD. A selection of these video clips are Page 19-2 Copyright © 2008 Lippincott Williams & Wilkins Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs available free on the Student CD and on the Instructors Resource Center on LWW’s thePoint Course and Content Manager. Free videos are denoted by an asterisk (*) in the Lesson Plans. Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course&Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-3 Copyright © 2008 Lippincott Williams & Wilkins Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-1: Spell and define the key terms. Lecture Outline — Objective19-1 Content Key Terms appear on the first page of this chapter lesson plan and the beginning of chapter 19. Text PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation 372 Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-4 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-2: Explain the procedures for measuring a patient’s height and weight. Procedure 19-1: Measuring Weight Procedure 19-2: Measuring Height Lecture Outline — Objective 19-2 Content Measurements taken at patient’s first visit — baseline data Text PPt 372 2 Most balance beam scales have moveable ruler Graph ruler mounted on wall Parallel bar against top of patient’s head — most accurate In-Class Activities Competency Evaluation Form for Procedure 19-2, Measuring Height. Materials 372 Taken every visit — prenatal, infants/children, elderly Types of scales: o Balance beam, digital, dial Pounds or kilograms Height (Fig. 19-2) Resources and In-Class Activities Competency Evaluation Form for Procedure 19-1, Measuring Weight. Cardinal (vital) signs: o Temperature, pulse and respiratory rate, blood pressure Anthropometric: o Height and weight Weight (Fig.19-1) Figures, Tables, and Features 3,4 Fig. 19-1: Three types of scales used in medical offices Outside Assignments/ Evaluation Outside Assignments Evaluation Checkpoint Question 1: Why is it important to measure vital signs accurately at every patient visit? Calibrated balance beam scale, digital scale or dial scale; paper towel; scale with a ruler. 5 373 Fig. 19-2: A wallmounted device to measure height. Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-5 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-3: Identify and describe the types of thermometers. Lecture Outline — Objective 19-3 Content Temperature (Fig. 19.3) Text PPt 373 6-9 Temperature can be measured oral, rectal, axillary or tympanic method Oral most common Tympanic prevalent in pediatric offices New type—temporal artery thermometer (Fig. 19-4) Fig. 19-3 Temperature Resources and In-Class Activities In-Class Activities Read Patient Education Box 19-1: Fever. Review comfort measures for fever Reflects balance between heat produced and heat lost by body Produced through metabolism and muscle movement o Heat lost through: Respiration Elimination Conduction through skin Normal=98.6 Fahrenheit or 37 Celsius o Normal = afebrile o Above normal=febrile Thermometers use Fahrenheit or Celsius Scale (Box 19-1) Figures, Tables, and Features Table 19-1 Mechanisms of heat transfer 373 7 Box 19-1 Temperature comparisons 374 Used correctly tympanic and temporal artery thermometer readings comparable to oral Rectal temperatures are 1º higher than oral due to vascularity and tight Page 19-6 Copyright © 2008 Lippincott Williams & Wilkins Fig. 19-4: Temporal artery scanning thermometer Outside Assignments/ Evaluation Outside Assignments Work Product 19-1: Obtain Vital Signs: Temperature Evaluation Checkpoint Question 2: How does an oral temperature measurement differ from a rectal measurement? Why? Checkpoint Question 4: How is the reading displayed on an electronic tympanic and temporal artery thermometer? Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-3 Content Text PPt 375 11 Figures, Tables, and Features environment of rectum Axillary temps—usually 1º lower due to lower vascularity and difficulty keeping axilla closed Must indicate temperature reading and METHOD used to obtain o Rectal temp of 101º is equal to 100 º orally and axillary reading of 101 º is equivalent to 102 º orally Glass mercury thermometer (Fig. 19-5, 19-6) Body heat expands mercury in bulb Calibrations — Fahrenheit: every 2°F starting at 92°F; Celsius: every 2°C starting at 35°C Oral — long slender bulb Rectal — short round bulb Axillary — either kind can be used Before using glass thermometer, place in disposable, clear plastic sheath Fig. 19-5: Glass mercury thermometers Fig. 19-6: Thermometers calibrated in the Celsius scale and Fahrenheit scale 376 Remove thermometer from patient, remove sheath by pulling thermometer out--turns sheath inside out o Traps saliva inside o Dispose of sheath in biohazard container Sanitize and disinfect thermometer Page 19-7 Copyright © 2008 Lippincott Williams & Wilkins Resources and In-Class Activities Outside Assignments/ Evaluation Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-3 Content Text PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation o Typically washing in warm soapy water and soaking in 70% isopropyl alcohol Use caution with mercury— have spill kit available Electronic thermometer (Fig. 19-7) Portable, battery-powered Tympanic thermometer (Fig. 19-8) For ear — relies on infrared light bounced off tympanic membrane Used increasing — accuracy like oral but less invasive Temporal Artery Thermometer (Fig. 19-4) 376 377 377 Upon release of on-off button temperature immediately recorded Fig. 19-7: Two types of electronic thermometers and probes Fig. 19-8:The tympanic thermometer in use Fig. 19-4: Temporal artery scanning thermometer Read manufacturer’s instructions carefully Disposable thermometer (Fig. 19-9) Single use; not as reliable Fig. 19-9: Disposable paper thermometer Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide WARM UPS FOR CRITICAL THINKING – QUESTIONS AND TALKING POINTS How would you respond to a patient who asks you to give advice on what type of thermometer to buy for use at home? Would the age of the patient be relevant with regards to the type of thermometer you might suggest? ►If possible, have students visit a local supermarket or drug store and report back on the various types of thermometers available for use at home. Once a list is developed, determine the appropriateness of using each thermometer on patients at varying ages. Page 19-8 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-4: Compare the procedures for measuring a patient’s temperature using the oral, rectal, axillary, and tympanic methods. Procedure 19-3: Measuring Oral Temperature Using a Glass Mercury Thermometer Procedure 19-4: Measuring a Rectal Temperature Procedure 19-5: Measuring an Axillary Temperature Procedure 19-6: Measuring Temperature Using an Electronic Thermometer Procedure 19-7: Measuring Temperature Using a Tympanic Thermometer Procedure 19-8: Measuring Temperature Using a Temporal Artery Thermometer Lecture Outline — Objective 19-4 Content Text Table 19-2: Variations in fever patterns Temperatures taken different ways can vary (Table 19-2) Oral temperature Place thermometer probe (glass or electronic) under tongue to either side of frenulum Leave in place 3–5 minutes Rectal thermometer PPt Figures, Tables, and Features 389391, 395 392-393 Have patient lie on side Use round-bulbed glass or electronic thermometer Spread lubricant on plastic sheath of thermometer Visualize anus Insert thermometer 1.5 inches past sphincter muscle (adult), 1 inch (child), or 0.5 inch (infant) Page 19-9 Copyright © 2008 Lippincott Williams & Wilkins Resources and In-Class Activities In-Class Activities Competency Evaluation Form for Procedure 19-3, Measuring Oral Temperature Using a Glass Mercury Thermometer. Competency Evaluation Form for Procedure 19-4, Measuring a Rectal Temperature Competency Evaluation Form for Procedure 19-6, Measuring Temperature Using an Electronic Thermometer. Outside Assignments/ Evaluation Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-4 Content Text PPt Figures, Tables, and Features Resources and In-Class Activities Hold in place 3 minutes before removing Allow patient to wipe away excess lubricant with tissue Note method in record Temperature usually 1°F higher than oral — more vascularity, tightly closed space Axillary thermometer Lift patient’s arm to expose enough of axilla to place thermometer Place deep in axilla Leave in place 10 minutes Note method in record Temperature usually 1°F lower than oral — less vascularity, less- closed space Tympanic thermometer 394 Competency Evaluation Form for Procedure 19-5, Measuring an Axillary Temperature. 396 Place probe cover on probe Insert probe in patient’s ear canal Reading will display in 2 minutes Accuracy like oral — closed space, vascular Temporal artery thermometer Competency Evaluation Form for Procedure 19-7, Measuring Temperature Using a Tympanic Thermometer. 397-398 Ensure patient’s skin is dry Place probe end of the handheld unit on forehead of patient Page 19-10 Copyright © 2008 Lippincott Williams & Wilkins Competency Evaluation Form for Procedure 19-8, Measuring Temperature Outside Assignments/ Evaluation Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-4 Content Text With thermometer on forehead, depress on/off button—move thermometer across and down forehead Release button with unit over temporal artery Reading displayed on digital display screen in 1-2 seconds Disinfect end of thermometer Wash hand and record procedure—indicate that temporal temperature was taken PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation Using a Temporal Artery Thermometer Materials Glass mercury oral and rectal thermometer; tissues or cotton balls; disposable plastic sheath; gloves; cool, soapy water; disinfectant solution; surgical lubricant; electronic thermometer with oral or rectal probe, disposable probe cover; tympanic thermometer, disposable probe covers; biohazard container; temporal artery thermometer, alcohol wipes. Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-11 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-5: List the fever process, including the stages of fever. Lecture Outline — Objective 19-5 Content Temperature Regulated by hypothalamus Text PPt 374 8 Figures, Tables, and Features Outside Assignments/ Evaluation Evaluation Checkpoint Question 3: Explain why the body temperature of a young child may be different from that of an adult. Balance between heat produced and heat lost Temperature elevations/variations often sign of disease—not disease in themselves Factors affecting temperature Age — children higher, elderly lower Gender — women higher Exercise — higher Time of day — early morning lower Emotion — stress higher, depression lower Illness — elevation can be a sign of illness 9-10 Fever Often related to bacterial or viral infection Types o Pyrexia: 101°F+ oral or 102°F+ rectal o Hyperpyrexia: 105–106°F Stages o Onset: rapid or gradual o Course: (Table 19-2) Resources and In-Class Activities 374-375 Page 19-12 Copyright © 2008 Lippincott Williams & Wilkins Table 19-2: Variations in fever patterns Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-5 Content Text PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation Sustained — constant Remittent — fluctuating Intermittent — intervals Relapsing — returning o Resolution: Crisis — abrupt Lysis — gradual Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-13 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-6: Describe the procedure for measuring a patient’s pulse and respiratory rate. Procedure 19-9: Measuring the Radial Pulse Procedure 19-10: Measuring Respirations Lecture Outline — Objective 19-6 Content Pulse Pumping of blood causes expansion and contraction of arteries — heart beat o Rate — normal is 60–100 beats per minute Can vary with age (Table 19-3) or other factors (Table 19-4) o Rhythm — normal is even = consistent time between pulses o Volume — strength/force of heartbeat o Soft, bounding, weak, thready, strong or full Feel — palpate (Fig. 19-10) o Place middle and index finger, middle and ring, or all three against pulse point o Do not use thumb o Radial artery most used (Fig. 19-11) Hear — auscultate o Place bell of stethoscope over apex of heart (Fig. 19-12, Fig. 19-14) o Alternative for pulse rate if Text PPt 378 12, 13 Figures, Tables, and Features Resources and In-Class Activities In-Class Activities Competency Evaluation Form for Procedure 19-9, Measuring the Radial Pulse. Table 19-3: Variations in pulse rate by age Table 19-4: Factors affecting pulse rate Competency Evaluation Form for Procedure 1910, Measuring Respirations. Materials Watches with sweep second hands. Resources: Video Clip #19-9: Measure a Patient’s Pulse 379381, 398 Page 19-14 Copyright © 2008 Lippincott Williams & Wilkins Fig. 19-10: Sites for palpation of peripheral pulses Fig.19-11: Measuring a radial pulse Fig.19-12: Measuring an apical pulse; Fig.19-14: The apical pulse is found at the 5th Animations: Cardiac Cycle; Hypertension (Student CD; IRCD; IRC) Outside Assignments/ Evaluation Outside Assignments Work Product 19-2: Obtain Vital Signs: Pulse Rate Evaluation Checkpoint Question 5: What characteristics of a patient’s pulse should be assessed, and how should they be recorded in the medical record? Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-6 Content Text PPt radial artery hard to palpate (Fig. 19-12) Doppler (Fig. 19-13) o Use to amplify pulse sound where can’t palpate o Can set to allow others in room to hear o Use gel to create seal between probe and skin o Hold probe at 90° with light pressure o Move until pulse is located Respiration Exchange of gases between blood and air Inspiration — contract diaphragm, breathe oxygen in Expiration — relax diaphragm, breathe carbon dioxide out Respiration — one full inspiration and expiration o Count for 1 minute o During pulse measurement o Count without patient knowledge; rate can be changed voluntarily Characteristics o Rate — normal is 14–20 respirations per minute o Rhythm — spacing between respirations o Depth — volume Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation intercostal space Fig.19-13: Dorsalis pedis pulse with Doppler 381, 399 14 Resources American Lung Association (http://www.lungusa.org) Animation: Breathing Sounds (Student CD; IRCD; IRC) Video Clip #19-10: Measure a Patient’s Respirations (Student CD; IRCD; IRC) 381-382 Page 19-15 Copyright © 2008 Lippincott Williams & Wilkins Outside Assignments Work Product 19-3: Document Appropriately: respiratory rate Evaluation Checkpoint Question 6: What happens within the chest cavity when the diaphragm contracts? Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-6 Content inhaled/exhaled o Sounds — can indicate disease Crackles: wet/dry sound Wheezes: high-pitched Factors o Age (Table 19-5) o Elevated body temperature Abnormal respirations o Tachypnea: faster rate o Bradypnea: slower rate o Dyspnea: difficulty breathing o Apnea: no respirations o Hyperpnea: deeper/gasping o Hypopnea: shallower o Orthopnea: unable to breathe lying down o Hyperventilation: rate exceeds oxygen demand Text 382 PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation Table 19-5: Variations in respiration rate by age Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide WARM UPS FOR CRITICAL THINKING – QUESTIONS AND TALKING POINTS Ms. Black arrived at the office late for her appointment, frantic and explaining that she had experienced car trouble on the way to the office, could not find a parking place, and just locked her keys inside her car. How would you expect these events to affect her vital signs? Explain why. ►Encourage students to review the physiology of the heart rate, respiratory rate, blood pressure, and temperature. Review the situations that may cause an increase or decrease in these vital signs. Page 19-16 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-7: Identify the various sites on the body used for palpating a pulse. Lecture Outline — Objective 19-7 Content Arteries (Fig. 19-10) Text 379 Apical Brachial Carotid Dorsalis pedis Femoral Popliteal Posterior tibial PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation Fig. 19-10: Sites for palpation of peripheral pulses Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-17 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-8: Define Korotkoff sounds and the five phases of blood pressure. Procedure 19-11: Measuring the Blood Pressure Lecture Outline — Objective 19-8 Content Blood pressure Pressure of blood as it pushes against artery walls during cardiac cycle Cardiac cycle; contraction and relaxation of heart (heart beat) Systole — pressure when heart contracts Diastole — pressure when heart pauses to refill Blood pressure recorded as systolic/diastolic o Measurements in millimeters of mercury (mm Hg) o Average adult = 120/80 o Athletes can be lower o Postural/orthostatic hypotension — sudden drop when standing up Measured with sphygmomanometer — blood pressure cuff (Fig.19-15) o Aneroid: dial o Mercury: column Text PPt 382, , 400-403 15-16 Resources and In-Class Activities In-Class Activities Competency Evaluation Form for Procedure 1911, Measuring the Blood Pressure. Materials Sphygmomanometer, stethoscope. Resource: Clinical Medical Assisting Competency Interactive Case Study: Unit 2: Vital signs, patient education, and refusal of treatment (Student CD; IRCD; IRC) 16 Korotkoff sounds Nicolai Korotkoff, Russian neurologist Figures, Tables, and Features 17 383 Page 19-18 Copyright © 2008 Lippincott Williams & Wilkins Fig. 19-15: Sphygmomanometers Outside Assignments/ Evaluation Outside Assignments Work Product 19-4: Document Appropriately: blood pressure Evaluation Checkpoint Question 7: What is happening to the heart during systole? During diastole? Checkpoint Question 8: How are the pulse pressure and auscultatory gap different? Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Lecture Outline — Objective 19-8 Content Five phases of sounds heard while auscultating brachial artery during blood pressure recording (Table 19-7) o Phase I: Faint tapping heard as cuff deflates is systolic pressure o Phase II: Soft swishing o Phase III: Rhythmic, sharp tapping o Phase IV: Soft tapping becomes fainter o Phase V: Last sound is heard at diastolic pressure Pulse pressure o Difference between systolic and diastolic Auscultatory gap o Heard during Phase II in hypertensive patients o Loss of sounds or drop of pressure 30 mm Hg or more while cuff deflates o Can cause errors in blood pressure readings so must watch dial/column Text PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation Table 19-7: Five phases of blood pressure 17 383 18 383 Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide WARM UPS FOR CRITICAL THINKING – QUESTIONS AND TALKING POINTS An elderly male patient tells you that he is considering stopping the blood pressure medication the physician ordered at the previous visit. He further explains that he has “read all about this drug on the internet” and he informs you that “it has side effects,” although he denies experiencing any at this time. Describe how you would handle this situation. ►Student responses may vary, however explain to the students that many patients believe all information they read on the internet, including information endorsed by celebrities, is true. Page 19-19 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-9: Identify factors that may influence the blood pressure. Lecture Outline — Objective 19-9 Content Many variables affect blood pressure — hypertension not diagnosed until 3 or 4 elevated readings Text 384 General health Diet, alcohol, tobacco use, exercise, family history, previous cardiac conditions Atherosclerosis and arteriosclerosis — affect size and elasticity of arteries Age: Older — higher Activity: Exercise — higher Stress: Fight or flight — higher Body position: Supine — lower Medications Hypertension Errors (Box 19-2) Improper cuff wrapping Improper placement Improper viewing of gauge Auscultatory gap Cuff deflation too fast or slow Failing to recheck after 1–2 minutes Wrong cuff size PPt Figures, Tables, and Features Resources and In-Class Activities Outside Assignments/ Evaluation Box 19-2: Causes of errors Resources in blood pressure readings American Society of Hypertension (http://www.ash-us.org) In-Class Activities Discuss patient education regarding hypertension. “What If” box, p. 385 Have students in small groups take baseline vital signs on each other, then again after each group participates in a different activity, e.g., vigorous exercise, drinking cold water, lying down. Discuss the different results. Materials Oral thermometers with plastic sheaths, watch with sweep second hand, sphygmomanometer, stethoscope. Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course&Content Manager; PPt: PowerPoint; SG: Study Guide Page 19-20 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes Comprehensive Medical Assisting (Third Edition) Chapter 19 — Anthropometric Measurements and Vital Signs Date: Learning Objective 19-10: Explain the factors to consider when choosing the correct blood pressure cuff size. Lecture Outline — Objective 19-10 Content Cuff fit Text 384 If incorrect, can change blood pressure by 30 mm Hg Cuff width 40–50% of arm circumference (Fig. 19-16) PPt Figures, Tables, and Features Fig. 19-16: Choosing the right blood pressure cuff Fig. 19-17: Three sizes of blood pressure cuffs Three sizes (Fig. 19-17) Obese adult Normal adult Pediatric Resources and In-Class Activities Outside Assignments/ Evaluation Upon completion of all Learning Objectives for Chapter 19: Instruct students to work through Chapter 19 of the Study Guide. Have students take the Chapter Self-Assessment Quiz at the end of Study Guide Chapter 19 and submit it at the next class period. You can review the answers as a group in class or grade them individually and return them to the students. Premium Online Course: Have students work through the exercises in Module 19 of the online course Legend: Student CD: CD-ROM that accompanies textbook; IRCD: Instructor’s CD-ROM; IRC: Instructor’s Resource Center on thePoint Course &Content Manager; PPt: PowerPoint; SG: Study Guide WARM UPS FOR CRITICAL THINKING – QUESTIONS AND TALKING POINTS What size of cuff would you choose for Mrs. Cooper, an elderly female patient who is 5 feet 3 inches tall and weighs approximately 90 pounds? Why? ►Although an adult cuff may fit this patient, it may be necessary to use a smaller pediatric cuff. Have students describe how using a wrong cuff size can affect the blood pressure. You are asked to teach a patient, Mr. Stone, how to take his blood pressure at home once in the morning and once at night and record these readings for 1 month. Create a patient education brochure that explains the procedure in understandable terms and design a sheet that Mr. Stone can easily use to record these readings. ►Remind students that a patient education brochure should be easy to read and designed for a variety of patients, including those who might be visually impaired. Page 19-21 Copyright © 2008 Lippincott Williams & Wilkins Instructor’s Notes