W4 oxygen Flashcards
how are infants/toddlers at risk for upper respiratory tract infections?
- frequent exposure to other children
- exposure to second-hand smoke
- during teething, some infants develop nasal congestion which encourages bacterial growth=increases the risk of respiratory tract infection
how are school-aged children and adolescents at risk for respiratory infection?
- exposure to second hand smoking and cigarette smoking
- a person who starts smoking in adolescence and continues to smoking into middle age =increase risk of cardiopulmonary disease and lung cancer
how are young and middle-age adults at risk for respiratory infection?
- unhealthy diet
- lack of exercise
- stress
- over-the-counter
- prescription drugs not used as intended
- illegall drugs
- smoking
how are elders at risk for respiratory infection?
- cardiac and respiratory system undergo changes throughout the aging process
- these changes include calcification of the heart vales, SA node, and costal cartilages
- arterial system develop atherosclerotic plaques
- osteoporosis leads to changes in the size and shape of the thorax
- trachea and large bronchi become enlarged from calcification of airways
- alveoli enlarge decreases the surface area viable for gas exchange
- number of functional cilia is reduced =decrease the effectiveness of cough mechanisms
- ventilation and transfer of respiratory gases decline w/ age b/c lung are unable to expand fully= leading to lower o2 levels
how to reduce the risk of respiratory infections?
- smoking cessation
- weight reduction
- low-cholesterol and low-sodium diet
- management of HTN and moderate exercise
what happens to a pt lung when they are obese?
- obesity decreases lung expansion and the increased body weight increase oxygen demands to meet metabolic needs
- also at risk of anemia
what happens to a pt lungs when malnourished?
- may experience respiratory muscle wasting, resulting in decrease muscle strength and respiratory excursion
- cough efficiency is reduced secondary to respiratory muscle weakness, putting the pt at risk for retention of pulmonary secretions
- at risk for anemia
smoking as a risk
- associated with heart disease, stroke, COPD, and lung cancer
- inhaled nicotine causes vasoconstriction of peripheral and coronary blood vessels, increasing B/P and decreasing blood flow to peripheral vessels
- women who smoke and take birth control are at increase risk for cardiovascular problem (thrombophlebitis and pulmonary emboli)
substance abuse as a risk
- pt tend to have poor nutritional intake
- excessive use can depress the respiratory centre, reducing the rate and depth of respiration and the amount of inhaled oxygen
- substance abuse by smoking or inhaling can cause direct injury to lung tissue causing permanent lung damage and impaired oxygen
stress as a risk factor
a continuous state of stress or severe anxiety increases the body’s metabolic rate and the oxygen demand
what are the nursing assessment for lungs
-in-depth hx of pts normal and present cardiopulmonary function
-past impairments in circulatory or respiratory functioning
-measures that pt uses to optimize oxygenation
-hx should include review of drugs food, and other allergies, such as pet dander, mould, and environmental triggers
-any pain, dyspnea, fatigue, peripheral circulation, cardiac risk factors, and presence of past or concurrent cardiac conditions
-cough, SOB, wheezing, pain, environmental exposure
-hx of respiratory tract infections
-hx of smoking
-alleriges
-family hx
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what is dyspnea
- a clinical sign of hypoxia and manifests as breathlessness/SOB
- subjective
- SOB associated w/ excerise or excitement
- can also be present w/out any relation to activity or expertise
what are the clinical signs w/ dyspnea
- exaggerated respiratory effort
- use of accessory muscle of respiration
- nasal flaring
- increase rate and depth of reparations
- impairs pts ability to lie flat
what is the vital analogue scale? (VAS)
- the vas is 100-mm vertical line w/ end points of 0-10
- zero= no dyspnea and 10 is=the worst breathlessness the pt has experienced
what is orthopnea?
an abnormal condition in which the person must use multiple pillows when lying down or must sit w/ the arms elevated and leaning forward to breath
what is a cough?
- a sudden, audible explosion of air from the lungs
- person breaths in, glottis is partially closed and the accessory muscles of expiration contract to expel the air forcibly
- coughing is a protective reflex to clear the trachea, bronchi and lungs of irritants and secretions
what is sputum contain?
mucus, cellular debris, and microorganisms, and may contain pus or blood
what is hemoptysis?
bloody sputum
- determine if it is associated w/ coughing and bleeding from the upper respiratory tract, from sinus drainage or from the gastrointestinal tract (hematemesis)
- tests: examination of sputum specimens, chest x-ray, and bronchoscopy should be performed
what is wheezing?
characterized by a high-pitched musical sound caused by high-velocity movement of air through a narrowed airways
- may be associated w/ asthma, acute bronchitis, or pneumonia
- can occur during inspiration, expiration or both
what should the nurse inspect for?
- observe any nails for clubbing
- any chest wall movement for retraction, sinking in of soft tissues of the chest between the intercostal spaces
- paradoxical breathing (chest wall contracts during inspiration and expands during exhalation)
- asynchronous breathing
- note the anteroposterior diameter of the chest wall
- cough
what should the nurse palpate for?
the presence and quality of peripheral pulses, skin temperature, colour, cap refill
-feet/legs should be palpated for presence/absence of peripheral edema (grade from 1+-4+)
percussion and respiratory assessment
- used to detect the presence of abnormal fluid or air in the lungs
- also aids in determining diaphragmatic excursion
what is auscultation used for in respiratory assessment?
- involves listening for movement of air throughout all lung fields-anterior, posterior, and lateral
- identify normal and abnormal heart and lung sounds
- includes s1, s2, s3, and s4 sounds
- is there a bruit over the carotid arteries?
- any fluid?
- adventitious breath sounds occur with collapse of a lung segment, fluid in a lung segment, or narrowing or obstruction of an airway.
what are some airway maintenance strategies?
- adequate hydration to prevent thick tenacious secretions
- proper coughing to remove secretions and keep airway open
- suctioning
- CPT (chest physiotherapy)
- nebulizer therapy
what are 4 managements for dyspnea?
- pharmacological measures (bronchodilators steroids, mucolytics, low-dose anti-anxiety meds)
- oxygen therapy (can reduce dyspnea associated w/ exercise
- physical techniques (coughing, pursed lips)
- psychosocial techniques
humidification and oxygen therapy
humidification is the process of adding water to gas
-air or oxygen w/ a high relative humidity keeps the airway moist and help loosen and mobilize pulmonary secretions
-humidification is necessary for pts receiving oxygen therapy at >4L/minute
-bubbling oxygen through water can add humidity to the oxygen delivered to the upper airways, as w/ a nasal cannula or face mask
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what is a nebulizer?
nebulization is the process of adding moisture or medication to inspired air by mixing particles of varying sizes w/ the air
- a nebulizer uses the aerosol principle to suspend a maximum number of water drops or particles of the desired size in inspired air.
- the moisture added to the respiratory system through nebulization improves clearance of pulmonary secretions
- humidification through nebulization enhances mucociliary clearance, the body’s natural mechanism for removing mucus and cellular debris from the respiratory tract
what is chest physiotherapy (CPT)
- a group of therapies used in combination to mobilize pulmonary secretions
- include postural drainage, chest percussion, vibration!!
- CPT should be followed by productive cough, and suctioning of pt who has a decreased ability to cough
- CPT is recommended for pts who produce greater than 30 mL of sputum per/day or has atelectasis
- safe for infants/young children
how is chest percussion performed?
- involves striking the chest wall over the area being drained
- percussion on the surface sends waves of varying amplitude and frequency through the chest, changing the consistency and location of the sputum
- it is performed by striking the chest wall alternately w/ cupped hands
- performed over a single layer of clothing (smooth) -prevent slapping pts skin
when is chest percussion contraindicated?
in pts w/ bleeding disorders, osteoporosis or fractured ribs
how is vibration done?
it is a fine, shaking pressure applied to the chest wall only during exhalation
- increases the velocity and turbulence of exhaled air
- facilitates secretion removal
- increases the exhalation of trapped air and may shake mucus loose and induce a cough
how is postural drainage done?
-use of positioning techniques that draw secretions from specific segment of the lungs and bronchi into the trachea
suctioning technique
-important when pt cannot clear their respiratory tract secretions w/ coughing
-includes oropharyngeal and nasopharyngeal
-sterile technique is used b/c the trachea is considered sterile
but the mouth is considered clean
-so suction the oral secretion after suctioning of the oropharynx and trachea
risk of too-frequent suctioning?
-can put the pt at risk for development of hypoxemia, hypotension, arrhythmias, and possible trauma to the mucosa of the lungs
when do we use oropharygenal and nasopharyngeal suctioning?
- oropharyngeal and nasopharyngeal suctioning is used when the pt is able to cough but unable to clear secretions by expectorating or swallowing
- the more we reduce the pulmonary secretions pt becomes less fatigued and pt may be able to expectorate or swallow the mucus, making it no longer required to suction
when do we use orothacheal and nasotracheal suctioning (I made 2 of the same cards basically)
when the pt w/ pulmonary secretions is unable to manage secretions by coughing and does not have an artificial airway
- -catheter is passed through the mouth or nose into the trachea.
- the nose is the preferred route b/c stimulation of the gag reflex is minimal
- entire procedure should be done quickly, no longer than 10 seconds
- pt should be allowed to rest during passes of the catheter unless in respiratory distress
- if they are using supplemental oxygen the oxygen should be place during rest periods
how to perform tracheal suctioning?
- accomplished through artificial airway (endotracheal tube or tracheostomy tube)
- to avoid trauma to the mucosa of the lungs, never apply suction pressure less than 150 mm Hg in adults
- u can rotate the Cather to enhance removal of secretions
- don’t use normal saline installation to try and improve secretions- it is harmful and not recommended
- open vs closed suctioning
what is open suctioning?
involves a sterile catheter that is opened at the time of suctioning
-must wear sterile gloves
what is closed suctioning?
involves a multiple-use suction catheter encased in a plastic sheath
- used on pt who require mechanical ventilation to support their respiratory efforts b/c it permits continuous delivery of oxygen while suction is being performed =reducing the risk of oxygen desaturation
- wear disposable gloves can be sterile or non sterile