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Fundamentals of Nursing Care: Concepts, Connections, & Skills Chapter 17 Vital Signs Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Six Vital Signs Blood pressure (BP) Temperature (T) Pulse (P) Respiration (R) Oxygen saturation (SpO2) Pain Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Six Vital Signs TPR BP Pulse oximetry (pulse ox) or oxygen saturation Pain Be sure to collect a full set of vital signs Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Significance of the Five Objective Vital Signs Reveal how certain systems are functioning Provide data regarding patient’s overall condition Provide a baseline against which subtle changes can be measured Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Significance of Vital Signs Monitor patient’s physiological condition Identify new problems Determine if an intervention should be performed Determine if prior interventions were effective Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Priceless Vital signs are only of value when they are accurate! Only a piece of the puzzle Must assess the whole person Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills When to Assess Vital Signs Admission to hospital Each visit to a clinic or emergency room Each home health or hospice visit Every 8 hours or according to hospital policy According to physician’s orders When a patient complains of feeling unusual or different When you suspect a change in condition Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills When to Assess Vital Signs (cont.) When administering medications Before, during, and after blood product transfusion Before, during, and after surgical and diagnostic procedures Every 4 hours when one or more vital signs are abnormal Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills When to Assess Vital Signs (cont.) A second time when an assessment finding is different from the last assessment Every 5 to 15 minutes if patient condition unstable Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Guidelines for Assessing Vital Signs Use an organized and systematic approach Use the appropriate equipment for each patient Be familiar with normal ranges for different ages Compare vital signs with previous vital sign range for that specific patient Know the patient’s medical history, meds, therapies Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Guidelines for Assessing Vital Signs (cont.) Understand and interpret the vital sign findings Record and communicate significant vital sign changes to the physician and next shift nurse Minimize environmental effects on vital signs Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills When to Reassess Vital Signs After administering IV medications Change in level of consciousness Unstable postoperative condition Uncontrolled bleeding Pale, cold, and clammy skin Whenever you detect or suspect a change in patient condition Whenever a serious condition is suspected Whenever your instinct says to reassess Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Terminology Related to Body Temperature Afebrile: without fever Febrile: fever Hyperthermia: fever Hypothermia: temperature below normal Pyrexia: fever, commonly above 105°F (40.5°C) Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Temperature Body temperature Difference between the amount of heat the body produces and the amount of heat that is gained or lost to the external environment Core temperature Temperature of the deeper structures and tissues Normally slightly warmer than superficial body tissue Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Temperature Core temperature Most important measurement to maintain Determines the conditions brain, heart, and internal organs to survive Sterile thermometer probe inserted into the pulmonary artery, heart, or urinary bladder Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Thermogenesis Production of heat Heat is produced Digestion Absorption Breakdown and synthesis of proteins Intake of food--↑metabolism--↑heat Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Thermogenesis Shivering ↑ heat production four to five times normal Exercise ↑ up to 50 times normal Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Thermoregulation Hypothalamus Elevated temp Blood vessels dilate—blood brought to skin surface—radiation Sweat produced—evaporation Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Thermoregulation Below normal temp ↑ heat production—cause muscles to shiver Constrict blood vessels—redirect blood flow to vital organs Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Factors Affecting Body Temperature Environment Time of day Gender Physical activity and exercise Medications Stress Food or drink Illness Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Used for Taking Temperature Oral—elongated tip Tympanic Axillary—elongated tip Skin—strip applied to skin Temporal artery Rectal—round, red tip Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Body temperature most accurate at a site with a good blood supply Oral Can not eat, drink, or smoke 15 to 30 minutes prior to measurement Plastic sheath Place under tongue Non-mercury Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Oral Route Do Not Use for Infants Small children Confused Unconscious Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Axillary Placed under arm in axillary site Hold in place 5 to 8 minutes unless electronic Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Axillary Route Must be continually held in place Temperature may be slightly lower Can be used on unconscious patient Non-invasive Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Tympanic Infrared device Adult—pull pinna up and back Child <3—pull pinna down and back Gently insert—pointing tip toward the mandible on the opposite side of the face Must be facing tympanic membrane Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Tympanic Route Walls of ear canal are cooler than tympanic membrane Cannot be used for patients with ear infections or after ear surgery Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Skin Disposable strip Apply to clean, dry skin Perspiration can affect reading Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Rectal Plastic sheath Lubricate the tip of the thermometer Insert 1-1½” (adult) ½ -1” (child) ½” (infant) Leave in place 2 minutes, unless electronic Not recommended as a route of choice due to risk of intestinal perforation Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Rectal Route Position patient properly Risk of body fluid exposure Contraindications to use Severe hemorrhoids Rectal surgery Immunocompromised High risk for bleeding Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Rectal Route Must hold in place continuously Embarrassing—provide privacy Clean area after removal Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Routes Temporal artery Special thermometer Scans temporal artery Press scan button—place probe on a dry forehead and slowly move across the width of the forehead and temple then lift off skin and touch neck just behind the earlobe Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Normal Body Temperature by Route Oral 98.6 F (37 C) Tympanic 98.6 F (37 C) Rectal 99.6 F (37.5 C) Axillary 97.6 F (36.4 C) Range: 97° to 99.6°F or 36.1° to 37.5°C ALWAYS document route temperature was obtained Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Fahrenheit-Celsius Conversion Formula C = (F – 32⁰) X 5/9 (102⁰ F – 32⁰) 70 X 5 350/9 = 38.9⁰C F = (C X 9/5) + 32 (38.9⁰ C X 9 350.1/5 70 + 32 = 102⁰F Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Conversion Formula °F -32/1.8 = °C 100.4°F – 32 = 68.4/1.8 = 38°C °C x 1.8 + 32 = °F 34°C x 1.8 = 61.2 + 32 = 93.2 103.6°F 37°C 95°F 35.6°C 104°F 38.8°C Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Elevated Temperature Natural response Immune system functioning properly Most physicians will not attempt to reduce fever until it elevates above 102⁰F (38.9⁰C) Elevations above 105⁰F (40.5⁰C) can result in damage to body cells Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Signs and Symptoms Flushed, warm skin Dry mucous membranes Glassy or droopy eyes Increased irritability or restlessness Photophobia Thirst Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Signs and Symptoms Headache or myalgia Lethargy or drowsiness Diaphoresis Anorexia Confusion, especially in children and elderly Seizures in infants and children Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Nursing Care Assess vitals at least q2h—more often depending upon the degree of abnormality Provide allowed fluids—prevent dehydration—observe for s/s of dehydration Offer small frequent meals rather than large meal Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Nursing Care Provide mouth and skin care Encourage limited activity and rest Minimal coverings unless shivering Apply cool compresses or ice packs (covered) forehead, neck, axillae, groin Keep gowns and linen clean and dry Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Nursing Care Administer antipyretic medication as ordered Salicylates Acetaminophen Ibuprofen May need to provide supplemental oxygen to meet the body’s increased metabolic needs Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Hypothermia Body temperature below 96⁰ F (34.4⁰ C) Slows body metabolism May be deliberate Mild hypothermia Warm blankets, clothes, ingestion of warm drinks Cover head Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Hypothermia More severe hypothermia Additional measures Heating blankets Hot water bottles Warmed IV fluids Warm baths Return to normal temperature slowly Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Terminology Related to Abnormal Pulses Bradycardia: heart rate below 60 bpm Tachycardia: heart rate above 100 bpm Pulse deficit: the difference between the apical and radial pulse when the radial pulse is slower than the apical pulse Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse How many chambers in the heart? Oxygenated blood leaves which ventricle? Stroke volume? Cardiac output? Pulse—arterial fluid wave palpated as a gentle pulsing, tapping or throbbing sensation at various points over the body Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Circulation http://www.youtube.com/watch?v=PgI80UeAMo http://www.youtube.com/watch?v=tBQa8IBzP 6I Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Corresponds to the contractions or beats of the heart Count a pulse by the number of beats or pulsations per minute Central or primary pulse site? Contraction is the strongest at the __________ of the heart Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Apical pulse is most accurate Can hear both heart sounds Information about valves and contraction of the atria and ventricles Unable to detect the above with peripheral pulses Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Listen for a full minute Normally hear two sounds S1 and S2 Lubb/dupp Together the two sounds represent one complete heartbeat Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Terminology Related to Normal Apical Pulse S1: as the ventricular contraction begins, the tricuspid and bicuspid valves (AV valves) slam shut; the first heart sound; the longer, lowerpitched sound; the lubb of “lubb dupp” S2: as the ventricles begin relaxation, the pulmonary and aortic valves (semilunar valves) close; a shorter, sharper sound; the dupp of “lubb dupp” Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Apical Pulse Assessing pulse rate in children <3 When radial pulse is weak or irregular Prior to administering heart rate altering medication Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse www.youtube.com/watch?v=xS3jX1FYG-M www.youtube.com/watch?v=7j_LniUd2Po Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Apical pulse = peripheral pulse If not Heart not pumping effectively Blood flow not strong enough to consistently deliver a fluid wave to the more distant pulse sites Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Irregular heart beat Apical pulse rate faster than the radial pulse rate Pulse deficit Radial pulse is slower than the apical pulse rate Ex. Apcial 88 Radial 82 Pulse deficit 6 Number of heart contractions to weak to produce a fluid wave strong enough to be felt at radial site Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Assessment Rate 60 to 100 <60 referred to as ___________________ >100 referred to as ____________________ Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Factors Affecting Pulse Rate Age Newborn—120-160 bpm 1-2 years—90 to 120 bpm 3-18 years—80 to 100 bpm Adults—60 to 100 bpm Emotions Stimulate SNS, ↑pulse rate Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Factors Affecting Pulse Rate Medications—can either speed up or slow down pulse rate Caffeine and nicotine—speed up the rate Exercise—speeds up the rate—well conditioned athletes may have a pulse rate < 60 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Factors Affecting Pulse Rate Meditation, rest, and sleep—lower pulse rate Circadian rhythm—slowest predawn to dawn and faster as the day progresses Decreased blood volume Hemorrhage or dehydration Pulse rate increases Attempt to transport oxygen to tissues faster Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Assessment Factors affecting pulse rate Increased fluid—fluid overload pulses full and bounding, sometimes faster ↑ temp—heart rate ↑ (10 bpm for each degree) As body cools—each degree slows pulse 10 bpm Hypoxia--↑ pulse rate Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Assessment Cardiovascular disease—varies on disease or disorder—can increase, decrease, or cause irregularity ↑ intracranial pressure—typically lowers the pulse rate and may cause irregularity Table 17-4, pg. 358 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Assessment Rhythm If all beats are evenly spaced—rhythm is regular If differences in the interval lengths—rhythm is irregular Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Peripheral Pulse Sites Temporal: used when radial not accessible Carotid: used in cardiac arrest Brachial: measured BP Radial: used for pulse rate assessment Femoral: determines leg circulation Popliteal: determines leg circulation Posterior tibialis: determines foot circulation Dorsalis pedis: determines foot circulation Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Peripheral Pulse Assessment Strength: Absent or 0 Weak or 1+ (may also be thready) can be obliterated with slight pressure—lose it Strong or 2+ easily detected—can be obliterated with moderate pressure--normal Bounding or 3+ very strong and full—does not obliterate even with moderate pressure Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Peripheral Pulse Assessment Equality: Equal strength bilaterally Weaker than opposite side Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Pulse Assessment Non-palpable peripheral pulse Palpate the next proximal pulse in that extremity If non-palpable, move to the next proximal pulse Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Non-palpable Peripheral Pulse Also assess Color Temperature Sensation Capillary refill Following assessment—obtain doppler Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Term for Normal Respirations Eupnea: evenly spaced respirations of normal depth, between the rate of 12 and 20 breaths per minute Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Respiratory Terms Apnea: respirations cease or are absent Bradypnea: respiratory rate below 12/minute Tachypnea: respiratory rate above 20/minute Dyspnea: labored or difficult breathing Stertorous: noisy, snoring, labored respirations that are audible without a stethoscope Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Respiratory Terms (cont.) Hypoxemia: decreased oxygen level in blood Hypoxia: decreased oxygen level in tissues Orthopnea: difficulty breathing unless in upright position Stridor: an audible high-pitched crowing sound that results from partial obstruction of the airways Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respiration Exchange of oxygen and carbon dioxide Breathing in—inhalation or inspiration Breathing out—exhalation or expiration Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respirations Be inconspicuous Placement of hands Assess radial pulse and keep same position while counting respirations If respirations abnormal—assess for a full minute Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Factors to Assess Regarding Respiratory Rate Rate per minute Depth Rhythm Pattern Respiratory effort Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respirations Rate One inspiration + one expiration= a respiration Observe the rise and fall of the chest Count the number of respirations Normal rate—12 to 20 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respirations Depth Observe the amount of chest expansion with each breath The volume of air that is inhaled Subjective Shallow, normal, or deep Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respirations Rhythm and pattern Regular or evenly spaced intervals between respirations If not evenly spaced—irregular Discuss irregular respirations noted in Table 17-7, pg. 362 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Respiratory Pattern Cheyne-Stokes respirations Respirations begin shallow, gradually increase in depth and frequency then begin to decrease in depth and frequency until slow and shallow— followed by a period of apnea (can last 10 to 50 seconds) Then starts over again…… Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Cheyne-Stokes Respirations Ominous sign Coma Heart failure Head injury Drug overdose Impending death Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Respiratory Pattern Biot’s Respirations Respirations are faster, deeper and irregular with periods of apnea Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Biot’s Respirations Meningitis Central nervous system disorders Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Respiratory Pattern Kussmaul’s Respirations Respirations increased in rate and depth with long, strong, blowing or grunting exhalations Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Kussmaul’s Respirations Diabetic ketoacidosis Renal failure Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respirations Respiratory effort Amount of work required to breathe Effortless and performed without thinking If working hard to breathe—startled, wide-eyed, anxious Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Respirations Exertional dyspnea Speaking, eating, repositioning, or ambulating Use of accessory muscles—neck and abdominal Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Breath Sounds Wheezes—musical, whistling—audible or auscultation Crackles or rales (fine or coarse)—air moving over secretions--fluid Rhonchi—continuous low pitched, rattling, bubbling, snoring… Stridor (sometimes heard without use of a stethoscope) Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Abnormal Breath Sounds www.youtube.com/watch?v=QPBZOohj2a0 http://www.easyauscultation.com/crackleslung-sounds http://emedicine.medscape.com/article/1894 146-overview Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Terminology Related to Blood Pressure Diastolic pressure: measurement of the pressure exerted by the blood on the artery walls while the heart ventricles are not contracting (at rest); the lower of the two pressures; the bottom number of the BP Systolic pressure: measurement of the pressure exerted by the blood on the artery walls while the heart ventricles are contracting; the highest of the two pressures; the top number of the BP Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Terminology Related to Abnormal Blood Pressure Hypertension: the systolic BP consistently over 140 mm Hg or the diastolic BP consistently over 90 mm Hg Hypotension: the BP suddenly falls 20 mm Hg to 30 mm Hg below the patient’s normal BP or falls below the low normal of 90/60 mm Hg Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Terminology Related to Abnormal Blood Pressure (cont.) Orthostatic hypotension or postural hypotension: when position changes result in a systolic pressure drop of 15 to 25 mm Hg or the diastolic pressure falls 10 mm Hg Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Blood Pressure Measurement of the pressure or tension of the blood pushing against the walls of the arteries The amount of pressure is determined by a combination of the following four circulatory qualities Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Four Circulatory Qualities Strength of the heart contraction or pumping action of the heart Blood viscosity or thickness Blood volume Peripheral vascular resistance or elastic recoil ability of the blood vessel walls Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Factors Affecting Blood Pressure Age, race, obesity Exercise, rest, level of hydration Circadian rhythm Anxiety Medications Nicotine and caffeine Hemorrhage, increased intracranial pressure Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement Systolic Measurement of the force exerted by the blood against the walls of the arteries during the contraction of the heart ventricles Diastolic Measurement of the pressure exerted by the blood on the artery walls while the heart is resting Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement Measured in millimeters of mercury (mm/Hg) Written as a fraction 132/74 Systolic—132 Diastolic—74 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement Pulse pressure Measurement of the difference between the systolic and diastolic pressures Subtract the smaller number from the larger Usually 30 to 50 Pulse pressure <30 or >50 is abnormal Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement Adult normal range 90/60 to 120/80 Systolic >120—pre-hypertension Refer to Table 17-1, pg. 347 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Management Hypertension Systolic readings consistently >140 or diastolic consistently >90 Medical diagnosis of hypertension BP elevation must be documented on at least two or more separate occasions Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Equipment Stethoscope BP cuff—sphygmomanometer Aneroid Electronic pressure manometer Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Equipment Cuff size makes a difference Cuffs available in child, small and large adult Correct size is necessary for an accurate reading Too large ________________ Too small ________________ Width should cover approx. 2/3 upper arm Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Assessment Sites Normally upper arm with stethoscope over the brachial artery at the antecubital site Lower arm with stethoscope over the radial artery If necessary—midthigh with stethoscope over the popliteal artery—Figure 17-4, pg. 348 Systolic may be 10 to 40 mm/Hg higher Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Korotkoff Sounds First sound: clear, rhythmic tapping sound, gradually increasing in intensity Second sound: soft, swishing or murmuring sound, representing turbulent blood flow Third sound: sharper, crisper rhythmic sound Fourth sound: softening or muffling of rhythmic sound Fifth sound: silence Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement First sound—Systolic Point at which you last hear any sound— documented as diastolic Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement Blood Pressure Sounds http://www.practicalclinicalskills.com/bloodpressure-course-contents.aspx?courseid=102 Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement How high to pump? 2 to 3 mm/Hg per second Be careful—auscultatory gap Inflate enough Listen 10 to 15 mm/Hg after hearing last sound Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills BP Measurement Do not use if Mastectomy or removal of lymph nodes Shunt for dialysis Casts, braces, dressings Recent vascular surgery or trauma to area CVA PICC line or IV Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Orthostatic Hypotension Hypotension occurring with position change When stand from a lying or sitting position Dizziness, lightheadedness, or faint Mild or prolonged Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Orthostatic Hypotension Normally Stand—blood pools in legs—body senses ↓--HR ↑--blood vessels constrict to ↑BP Possible causes—dehydration, heart disease, diabetes, nervous system disorders, medications, blood loss Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Orthostatic Hypotension Lying—Sitting—Standing Within 1 to 3 minutes BP and pulse rate If systolic drops 20 mm/Hg or diastolic drops 10 mm/Hg If HR rises > 20 bpm Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Effects of Hypertension on the Body Gradual loss of elasticity in arterial walls results in less stretch and recoil Heart has to work harder to pump blood through the cardiovascular system Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Risk Factors for Hypertension Family history Smoking Chronically high stress level Moderate to heavy alcohol consumption Obesity Elevated cholesterol levels in blood Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Treatment Lifestyle changes ↓ dietary salt and fat intake Weight loss Smoking cessation, reduce or stop excessive alcohol intake Stress reduction ↑ physical activity and exercise Medications Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Damage Caused by Untreated Hypertension Brain, in the form of a stroke Heart, in the form of congestive heart failure or myocardial infarction (heart attack) Kidneys, resulting in kidney failure Retinas of the eyes, resulting in loss of vision Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Oxygen Saturation Pulse oximeter Assessment sites Fingertip, earlobe, bridge of the nose or when circulation adequate, the toe Infants? Pulse saturation—SpO2 Intermittent or continuous Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Oxygen Saturation Assessment site Adequate blood flow Clean and dry—moisture interferes with accuracy No artificial nails No dark fingernail polish Patient movement interferes with accuracy Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Characteristics of Pain to Be Assessed Site or location Characteristics Constant or intermittent? Sharp, dull, stabbing, cramping, or burning Severity of pain using a pain scale that is appropriate for age and comprehension Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Neuro Check Assessing neurological system Monitoring neurological system Pupils—PERRL Level of Consciousness—LOC Verbalization Facial symmetry Copyright © 2011 F.A. Davis Fundamentals of Nursing Care: Concepts, Connections, & Skills Neuro Check Upper extremity strength Assess right and left side—equal in strength? Lower extremity strength Assess right and left side—equal in strength? Copyright © 2011 F.A. Davis