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Blood Pressure
Represents the force exerted by blood against the arterial walls
normal Blood Pressure
120/80
borderline hypertension Blood Pressure (stage 1)
130/80
stage 2 hypertension Blood Pressure
140/90
Hypertensive crisis Blood Pressure
180/120 or greater
hypotensive Blood Pressure
less than 90/60
systolic pressure and diastolic pressure
top number - Systolic
bottom number - Diastolic
orthostatic hypotension
A drop in blood pressure by 20mmHg or more due to a sudden change of posture.
peripheral vascular resistance affect Blood Pressure
increased BP
blood volume affect Blood Pressure
low fluid volume = drop BP and increase heart rate
Blood Viscosity effect on Blood Pressure
Increases blood pleasure with thicker blood
(pumping molasses / water)
Who has a higher Blood Pressure? Males or Females… Until when?
Men do until women complete menopause then it evens out
What race has higher Blood Pressure
African Americans
T/F Blood Pressure stays the same through out the day
False, it is lower in the morning and increases throughout the day
Anxiety, Pain, and exercise affect Blood Pressure
Increasing
pulse pressure
difference between systole and diastole
normal pulse pressure
30-50
Measuring orthostatic Hypotension
Take BP when pt is lying down, sitting, and then standing with 1-3 minutes of rest in between measurements
What is the 1st Korotkoff sound?
systolic pressure, first ventricular contraction
What is the 5th Korotkoff sound?
Last sound you here, diastole, heart is at rest
What happens if the Blood Pressure cuff is too tight on pt?
False high reading
What happens if BP cuff is too loose on pt?
low reading
T/F when a pt has a change in health status before calling the doctor the nurse must re-take the pt's VS
True
When to take vital signs
• admission / discharge
• physical assessment
• routine monitoring
• general physical condition changes (e.g., loss of consciousness or increased intensity of pain)
• Before and after surgery or invasive procedure
• ongoing care to detect improvements
5 vital signs
Temp, pulse, respirations (Pulse Ox), BP, and pain
How often should a nurse be taking a pt's vitals?
Usually once a shift, based on physicians orders but nurses are responsible for judging if a Pt's vitals need re-assessed sooner
What things should be considered when taking a pt's vs
illnesses, physical condition, and age can affect vs
T/F vital sign assessment can be delegated but, the interpretation of Vital Signs and the decision of interventions cannot be delegated!
True
Average oral temperature
98.6 F, 37C
children older than 4 years
Average tympanic temperature
99.5 F, 37.5C
3 mo and older
Average rectal temperature
99.6 F, 37.5 C
not used on babies
Average axillary temperature
97.6 F, 36.5 C
for newborns and infants
Average temporal temperature
98.7 F, 37.1C
Average infrared tempature
97 F, 36.1 C
Neural control of body temp regulation
hypothalamus senses body temp and signals when to adjust
methods body thermoregulate when cold
Increased BMR
Voluntary movement
Shivering
All increase body heat
Body heat loss methods
Radiation
Conduction
Convection
Evaporation
Radiation (body temp)
Transfer of heat that is lost when the body is in a cold environment
Conduction (body temp)
transfer of heat from body to another surface (being in cold water)
Convection (body temp)
dispersion of heat through wind currents (fan)
Diaphoresis
sweating
age affect body temp
Skin becomes thinner as we age, decrease in circulation and lowering body temp
hormones affect body temp
Women's Body temp goes up during ovulation and low during menstruation (low progesterone)
circadian rhythm affect body temp
body temp lower in the morning, increase throughout the day
hyperthermia temp (F & C)
102.2 F / 39 C
severe fever temp
greater than 104 F / 40 C
Treatment of a fever
Antipyretics (Tylenol) and a hypothermia blanket
heat stoke caused by
fever of 106-113 F, environment weather, medications, excessive exercise, high humidity
Signs and Symptoms of a heat stroke
hot and dry skin, confusion, muscle cramps, elevated pulse and low bp
hypothermia body temp
less than 95 F / 35 C
Signs and Symptoms of hypothermia
uncontrolled shivering, memory loss, poor judgement, low pulse, resp, and BP. Cyanosis (blue)
Pulse
Number of ventricular contractions that occur within one minute
normal pulse rate
60-100 bpm in an adult
Bradycardia
less than 60 bpm
Tachycardia
greater than 100 bpm
different when assessing vitals on a pt with an irregular rhythm
Take pulse for a full minute
detect arrhythmia/Dysrhythmia
EKG or ECG
Pulse strength of 0
pulse is absent, requires doppler for confirmation
(pulse present with doppler only)
Pulse strength of 1
weak, hardly feel it
Pulse strength of 2
normal, average pulse
Pulse strength of 3
bounding, usually high BP
T/F to test for pulse equality you should check both sides
True
Where should you assess the pulse
the radial pulse inner wrist /thumb side
How do you take an apical pulse
find 5th intercostal space, auscultate with stethoscope and count for 60 seconds
When and Where does one take an apical pulse
when pulse is not normal
Point of Maximum impulse (PMI)
T/F is patient is obese or big breasted and an apical pulse must be taken it should be taken over the breast
False, ask patient if it is okay to lift breast and take pulse under the breast
Where is the dorsalis pedis pulse?
top of foot
Where is the posterior tibial pulse?
inside ankle
other common pulse sites?
Temporal, carotid, brachial, femoral, popliteal
When should the carotid pulse be taken
in emergency situations only
fever affect pulse
increased
hypothermia affect pulse
it decreases it
sudden pain affect pulse rate
it increases it
not with chronic pain
medications affect pulse rate
narcotics decrease it, epinephrine increases it
Normal respiration rate
12-20 respirations per minute
Tachypnea
greater than 20 breaths/min
Bradypnea
less than 12 breaths per minute
Dyspnea
difficulty breathing
Apnea
No breathing
Orthopnea
difficulty breathing when lying down
Hyperventilation
increase in rate and depth of respirations
Most important VS to take care of first
Respirations, airway
Ventilation
movement of air in and out of the lungs
Ventilation is assessed by
Respiratory Rate
Diffusion (respiratory)
movement of O2 and CO2 between alveoli and RBCs
Diffusion assessed by
blood O2 saturation
Perfusion (respiratory)
distribution of RBCS to and from capillaries, if not good extremities will turn blue
O2 saturation
Breath depth types (4)
shallow/ deep
labored/unlabored
altitude affect respiration
increased rate and depth, improve O2 supply
smoking affect respiration rate
increases
Body temp affect of respiration rate
increased metabolism = increased respritory rate
normal pulse oximetry
90%-100%
direct measurement of an o2 saturation
arterial blood gas (ABG) invasive
peripheral vascular disease affect pulse ox measurement
causes thick discolored nails, cant take pulse ox without invasive measures
Hypotension and Hypothermia affect o2 reading
poor circulation causes inaccurate reading
T/F pulse ox monitor not pick up o2 sat if pt has CO poisoning
True, must use ABG
Assessing Pain
pain assessment chart
also Onset, Location, Duration, Characteristics, Aggravating factors, Relieving factors, Treatment
OLDCART
O-Onset
L-Location
D-Duration
C-Characteristic
A-Aggravating Factors
R-Relieving Factors
T-Treatment
Pain assessment (other than OLDCART)
Intensity on a pain scale
Observed behavior effects
Effect on ADL's
unit blood pressure measured in
millimeters of mercury / mmHg