Transcript Chapter 28 Oxygen Needs

•Oxygen (O2) is a gas. It has no
taste, odor, or color. Oxygen is
needed for life. Every cell needs
oxygen. The respiratory and
cardiovascular systems must
function properly for cells to get
enough oxygen.
The Respiratory System brings oxygen into the lungs and it rids the body
of carbon dioxide. Oxygen and carbon dioxide are exchanged between
the alveoli and capillaries
A. Parts of the Respiratory System
1. Nose
2. Mouth
3. Larynx
4. Epiglottis
5. Trachea
6. Lungs
7. Bronchi & Bronchioles
8. Alveoli & capillaries
9. Diaphram
B. Circulatory System:
- Oxygen and carbon dioxide are exchanged between the alveoli and
capillaries. Blood in the capillaries pick up oxygen from the alveoli.
The blood returns to the L side of the heart (left atrium) and pumped
to the body.
C. Terms:
Inhalation: breathing in
Inspiration: breathing air into the lungs
Exhalation: breathing out
Expiration: exhaling air out of the lungs
Diaphragm: is a muscle structure that
separates the lungs from the abd
cavity.
2. Factors that affect Oxygen Needs:
• Respiratory system status: Is it functioning normal?
-Opened airway is needed
-Must exchange O2 and CO2 in the alveoli
•Cardiovascular System: blood must flow to and from the heart in order to pick up oxygen.
-Narrowing blood vessels (hardening of arteries) effect blood flow.
•Red blood cell count: red blood cells contain hemoglobin.
-Hemoglobin pick up oxygen in the lungs and carry it to the cells.
•Nervous System: Diseases or injuries can affect breathing.
-Brain damage affects respiratory rate, rhythm, and depth.
•Age: Respiratory muscles weaken, lung tissues are less elastic.
-Older people are at risk for respiratory complications.
•Exercise – Fever – Pain: increase need for oxygen
•Drugs & Alcohol: depress the respiratory system in the brain. (Narcotics – pain killers)
•Smoking: Cause lung cancer and chronic obstructive pulmonary disease (COPD)
•Allergies/pollutant exposure
•Nutrition: body needs iron and vitamins
Vocabulary:
Hypoxia – cells do not have enough oxygen (restless, disoriented, agitated,
pulse rate, pallor cyanosis) hypoxia is life threatening
restlessness is an early sign.
Tachypnea/hyperpnea: rapid breathing, respirations are more than 20 per
minute
Bradypnea/hypopnea: Slow breathing, respirations are fewer than 12 per
minute
Apnea: lack of or absence of breathing
Dyspnea: Difficult, labored, or painful breathing
Cheyne-stokes: increase in rate and depth then shallow and slow
breathing may stop for 10-20 seconds. Common when death is near.
Orthopnea: Breathing deeply and comfortably only when sitting
Orthopneic position: sitting up and leaning over a table to breath
Shortness of Breath (SOB): is difficulty breathing or pain on breathing.
It is a common symptom with emphysema and COPD
Aspiration: breathing fluid, food, vomitus or an object into the lungs.
Bronchitis: inflammation of the bronchioles
Pneumonia: inflammation of the lung tissue, caused by infection and
results in impaired gas exchange
Asthma: condition that affects the bronchi & bronchioles of the lungs.
Triggers (allergies, smoke) cause the bronchi to narrow and make it
hard to breath.
Chronic Obstructive Pulmonary disease: Lung disorders – emphysema,
chronic bronchitis, leading cause is smoking.
Emphysema: after prolonged COPD, destruction of the lungs occurs
Tuberculosis: an airborne infection caused by a bacterium that usually
infects the lungs
4. What to report to the nurse:
- hypoxia (see S&S in box 28-1)
- SOB or complaints of being “winded” or “short-winded”
- cough (note description)
- sputum – mucus from respiratory tract; color, odor, consistency
- noisy respirations
- chest pain
- cyanosis
- changes in Vital Signs
- pallor
-apnea ( no breathing)
5. Ways to promote Oxygen:
To get enough oxygen, air must move deep into the lungs.
A: Positioning: Persons who have difficulty breathing
prefer sitting up (semi-fowlers) or leaning over
a table (orthopneic position). Frequent position
changes are needed.
B: Turn, Cough, Deep Breathing (TCDB): coughing removes mucus. Deep
breathing moves air into the lungs.
- prevents pneumonia and atelectasis (collapse of a portion
of the lung
- They are done after surgery or injury and during bedrest.
C: Incentive Spirometry: device that measures the
amount (volume) of air inhaled.
*Goal is to improve lung function
D: Pulse oximetry: measures oxygen concentration in arterial
blood.
*Normal Range is 95-100 SpO2
*it can be attached to the finger, toe, earlobe
*Tell nurse right away if alarm sounds – CNA’s do NOT turn alarms off!
6. Oxygen Therapy: Is considered a DRUG
CNA’s are not responsible for administering oxygen. Doctor’s order
amount, device to use and when it is given.
A. Flow rate: amount of oxygen given is called the flow rate. Can be anywhere
from 2 to 15 liters per minute.
The nurse or respiratory therapist sets the rate.
The CNA need to be aware of flow rate – if different from
charts, notify the nurse at once.
B.
Humidifier: Oxygen is dry gas. Oxygen dries the airways mucous membranes.
Distilled water is added to the humidifier to create water vapors. Make
sure water bottle does not get too low. If the water gets to low and not
bubbling the humidifier is not working.
C. Oxygen Safety: Page 455 Box 28-3
- Never remove oxygen device
- Check for signs of irritation from the device
- Make sure there are no kinks in tubing
- Make sure person is not lie on any part of the tubing
- Report any S&S of abnormal breathing
- Give oral hygiene as needed.
- Maintain adequate water level in the humidifier.
**CNA’s do not administer oxygen, do not adjust flow rate, and never shut off oxygen!**
D. Oxygen devices:
- Nasal cannula: prongs are inserted into the nostrils.
Allows eating and drinking
- Simple face mask: covers the nose and mouth. Co2 escape exhaling
E. **Do not remove the mask or NC unless you are specifically told to do so by
the nurse. Also, provide oral care Q2hrs or PRN**
F. Always check for:
*skin breakdown around the nose, cheekbones and the ears.
*no kinks or lying on tubing
*lubricate area or use cotton balls between cannula tubing and ear
7. Artificial Airways: are used to keep the airway open.
Intubation: inserting an artificial airway into the trachea.
Tracheostomy: is temporary or permanent and should be covered by a gauze dressing
A. Measures are needed to prevent aspiration.
Nothing can enter the stoma.
- do not have loose gauze or lint
- covered when you go outside
- take tub baths instead of showers
- be careful when shampooing
- person with a tracheostomy may
have a hard time communicating.
B. Causes: smoking ,diseased, injury, secretions,
or aspiration obstructs the airway.
Unconscious or recovering from anesthesia.
8. Mechanical Ventilation:
Alarms sound when something is wrong. First make sure tube is
attached to the ventilator. If not…attach the tube and get the nurse.
**Never turn off alarms**
9. Hypoxia: the cells do not have enough oxygen (hypo-decreased, oxia-oxygen)
Individuals who have a chest tube, artificial airway and or on a
mechanical ventilator is at risk for HYPOXIA.
Signs and symptoms of hypoxia: BOX 28-1
- restlessness
- dizziness
- disorientation
- confusion
- apprehension
- agitation