CHAPTER 53 - AIRWAY MANAGEMENT Flashcards
CHAPTER 53
Airway Management
Managing airway compromise
includes respiratory assessment and measuring vital signs, including oxygen saturation via pulse oximetry and administration of oxygen.
Oxygen helps maintain adequate
cellular oxygenation for clients who have many acute and chronic respiratory problems (bronchitis, cystic fibrosis, asthma) or are at risk for developing hypoxia (respiratory illness, circulatory impairment).
Maintaining a patent airway is a nursing priority. It involves
mobilizing secretions, suctioning the airway, and managing artificial airways (endotracheal tubes, tracheostomy tubes) to promote adequate gas exchange and lung expansion.
● A pulse oximeter is a device
with a sensor probe that attaches securely to the fingertip, toe, bridge of nose, earlobe, or forehead with a clip or band.
● A pulse oximeter measures pulse saturation (SpO2) via a wave of
infrared light that measures light absorption by oxygenated and deoxygenated hemoglobin in arterial blood. SpO2 reliably reflects the percent of saturation of hemoglobin (SaO2) when the SaO2 is greater than 70%.
● Oxygen is a tasteless and colorless gas that accounts fo
r 21% of atmospheric air.
● Oxygen flow rates vary to maintain an SpO2 of
95% to 100% using the lowest amount of oxygen to achieve the goal without risking complications.
● The fraction of inspired oxygen (FiO2) i
s the percentage of oxygen the client receives.
Noninvasive measurement of the oxygen saturation of the blood for monitoring respiratory status when assessment findings include any of the following.
● Increased work of breathing
● Wheezing
● Coughing
● Cyanosis
● Changes in respiratory rate or rhythm
● Adventitious breath sounds
● Restlessness, irritability, confusion
● Dyspnea
● Orthopnea
● The expected reference range is 95% to 100%. Acceptable levels range from
91% to 100%. Some illness states can allow for 85% to 89%.
Readings less than 90% reflect
hypoxemia.
● Values can be slightly lower for
older adult clients and clients who have dark skin.
● Additional reasons for low readings include
hypothermia, poor peripheral blood flow, too much light (sun, infrared lamps), low hemoglobin levels, jaundice, movement, edema, metal studs in nails, and nail polish.
Oxygen is a therapeutic gas that
treats hypoxemia (low levels of arterial oxygen).
Administering and adjusting it requires
a prescription.
MANIFESTATIONS OF HYPOXIA - early on
EARLY
● Tachypnea
● Tachycardia
● Restlessness, anxiety, confusion
● Pale skin, mucous membranes
● Elevated blood pressure
● Use of accessory muscles, nasal flaring, adventitious lung sounds
MANIFESTATIONS OF HYPOXIA - later on
LATE
● Stupor
● Cyanotic skin, mucous membranes
● Bradypnea
● Bradycardia
● Hypotension
● Cardiac dysrhythmias
NURSING ACTIONS for hypoxia
● Monitor respiratory rate and pattern, level of consciousness, SpO2, and arterial blood gases (ABGs).
● Provide oxygen therapy at the lowest liter flow that will correct hypoxia.
● Make sure the mask creates a secure seal over the nose and mouth.
● Assess/monitor hypoxia and hypercarbia (elevated levels of CO2): restlessness, hypertension, and headache.
● Auscultate the lungs for breath sounds and adventitious sounds (crackles and wheezes).
● Assess/monitor oxygenation status with pulse oximetry and ABGs.
● Promote oral hygiene.
● Encourage turning, coughing, deep breathing, and the use of incentive spirometry and suctioning.
● Promote rest and decrease environmental stimuli.
● Provide emotional support.
● Assess nutritional status. Provide supplements.
● Assess skin integrity. Provide moisture and pressure‑relief devices.
● Assess and document the response to oxygen therapy.
● Titrate oxygen to maintain the recommended oxygen saturation.
● Discontinue supplemental oxygen gradually.
● Monitor for respiratory depression (decreased respiratory rate and level of consciousness).
● Low‑flow oxygen delivery systems deliver varying amounts of oxygen based on the delivery method and the client’s breathing pattern.
LOW‑FLOW OXYGEN DELIVERY SYSTEMS
Nasal cannula / simple face mask / Partial rebreather mask / Non-rebreather mask
Nasal cannula
Tubing with two small prongs for insertion into the nares
FRACTION OF INSPIRED OXYGEN
FRACTION OF INSPIRED OXYGEN: Delivers an FiO2 of 24% to 44% at a flow rate of 1 to 6 L/min.
ADVANTAGES nasal canula
● A cannula is a safe, simple, and easy‑to‑apply method.
● A cannula is comfortable and well‑tolerated.
● The client is able to eat, talk, and ambulate.
DISADVANTAGES nasal canula
● The FiO2 varies with the flow rate, and the rate and depth of the client’s breathing.
● Extended use can lead to skin breakdown and dry mucous membranes.
● Tubing is easily dislodged.