Exam 3 chapter 11 Flashcards
What requires adequate oxygenation for optimal functioning?
Metabolism, motion, tissue integrity, sleep, and nutrition
Ventilation
Process of moving gases in and out of the lungs by inspiration and expiration
Diffusion
The process by which oxygen and carbon dioxide move from areas of high concentration to areas of lower concentration
There are three main structures within the thorax (chest)
The mediastinum and the right and left pleural cavities
The mediastinum is positioned in the?
Middle of the chest. Within it lie the heart, the arch or aorta, the superior vena cava, the lower esophagus, and the traches
The pleural cavities contain?
The lungs. They are lined with two types of serous membranes: the parietal and visceral pleura.
- The chest wall and diaphragm are protected by the parietal pleura, and the lungs are protected by the visceral pleura
- a small amount of fluid lubricates the space between the pleurae to reduce friction as the lungs move during inspiration and expiration
The right lung has? The left lung has?
Right: Three lobes
Left: Two lobes
-Each lung extends anteriorly about 1.5 inches (4cm) above the first rib into the base of the neck in adults and posteriorly approximately to the level of T1 (first thoracic vertebra)
-the base or lower border of each lung expands approximately down to T12 during deep inspiration and rises approximately to T9 on expiration
Most of the respiratory system is protected by the?
Thoracic cage consisting of 11 thoracic vertebrae, 12 pairs of ribs, and the sternum
- all ribs connected to the thoracic vertebrae posteriorly
- the first 7 ribs are also connected anteriorly to the sternum by the costal cartilages
- the costal cartilages of the eight to tenth ribs are connected immediately superior to the ribs
The eleventh and twelfth ribs are?
Unattached anteriorly and are called floating ribs
-tips of the eleventh ribs are located in the posterior thorax
The adult sternum is about 7 inches (17cm) long and has three components:
The manubrium, the body, and the xiphoid process
- manubrium and the body of the sternum articulate with the first seven ribs; the manubrium also supports the clavicle
- the intercostal space (ICS) is the area between the ribs
- ICS is named according to the rib immediately above it
Primary muscles of breathing
The diaphragm and the intercostal muscles
- during inspiration the diaphragm contracts and pushes the abdominal contents down while the intercostal muscles help to push the chest wall outward
- these combined efforts decrease the intrathoracic pressure, which creates a negative pressure within the lungs compared with the pressure outside the lungs
- this pressure difference causes the lungs to fill with air
- during expiration the muscles relax, expelling the air as the intrathroacic pressure rises
- accessory muscles that may contribute to respiratory effort include anteriorly the sternocleidomastoid, scalenus, pectoralis minor, serratus anterior, and rectus abdominis muscles and posteriorly the serratus posterior superior, transverse thoracic, and serratus posterior inferior muscles
During inspiration air is drawn in through the mouth or nose and passes through the pharynx and larynx to reach the?
trachea, a flexible tube approximately 4 inches (10cm) long in the adult
Structures that make up the upper respiratory airway
Nose, pharynx, larynx, and trachea
-has three functions in respiration: to conduct air to the lower airway, to protect the lower airway from foreign matter, and to warm, filter, and humidify inspired air
The lower airway consists of the?
Left and right main stem bronchi, the segmental and subsegmental bronchi, the terminal bronchioles, and alveoli
The trachea splits into a?
Left and right main-stem bronchus at about the level of T4 and T5
- right bronchus is shorter, wider, and more vertical than the left
- bronchi are further subdivided into increasingly smaller bronchioles
- each bronchiole opens into an alveolar duct and terminates in multiple alveoli, where gas exchanges occur
Present health status: Do you have chronic illnesses?
Many chronic illnesses can cause symptoms that affect the respiratory system, including heart disease or renal disease, which may cause pulmonary edema
An increased frequency of allergies may indicate?
The onset of new allergies or ineffective therapy for respiratory disease
Individuals who have no difficulty breathing until they are active may have?
Pulmonary or heart disease that limits the availability of oxygen needed during exertion
Risk factors for lung cancer
(M)=modifiable risk
- Tobacco smoking: #1 risk factor for lung cancer (M)
- Secondhand smoke (M)
- Radon: naturally occurring gas comes from rocks/dirt and can get trapped in houses/building. Causes 20,000 cases of lung cancer each year. 2nd leading cause
- Asbestos (M)
- Environmental exposure in some workplaces (M)
- Air pollution (M)
- Radiation therapy to chest: i.e. cancer survivors
- Personal and family history
Home environment factors that may affect breathing
- Air pollution
- Possible allergens in home such as pets
- Type of heating or air conditioning, including filtering system, humidification, and ventilation
- Hobbies: Woodworking, plants, metal work
- Exposure to the smoke of others in your home
Recording tobacco use
Cigarette use is documented by pack-years
-pack-year is the number of years pt smoked multiplied by the number of packs of cigarettes smoke each day
A cough can be acute (sudden onset and usually lasting less than 3 weeks) or chronic (longer than 3 weeks).
Common causes of acute cough are?
Chronic?
Acute: viral infections, allergic rhinitis, acute asthma, acute bacterial sinusitis, or environmental irritants
Chronic: postnasal drip, gastroesophageal reflux disease (GERD), asthma, infections such as chronic bronchitis, blood pressure drugs (Angiotensin-converting enzyme (ACE) inhibitors such as captopril, commonly prescribed for high BP and heart failure, and known to cause chronic cough)
A description of a cough may provide clues to the cause.
- Viral pneumonia causes a dry cough
- Bacterial pneumonia causes a productive cough
The frequency of sputum production and the time of day most sputum is produced should be explored.
- Increased sputum in the morning implies an accumulation of sputum during the night and is common with bronchitis
- Sputum production with a change in position suggests lung abscess and bronchiectasis
- Amount of sputum production can vary from a few tsps to a copious amount (a pint or more)
Documenting the appearance of the sputum is important. Some conditions have characteristic sputum production
- white or clear sputum may occur with colds, viral infections, or bronchitis
- yellow or green sputum may occur with bacterial infections
- black sputum may occur with smoke or coal dust inhalation
- rust colored sputum may occur with TB or pneumococcal pneumonia
- hemoptysis: the expectoration of sputum containing blood. Can vary
The consistency of sputum may be described as?
Thin, thick, gelatinous, sticky, frothy
- pink, frothy sputum with dyspnea is associated with pulmonary edema
- Thick sputum is commonly associated with cystic fibrosis
Foul smelling (fetid) sputum is typically associated with
bacterial pneumonia, lung abscess, or bronchiectasis
A cough may be a symptom of pulmonary problems or it may exist in conjunction with other problems. Related signs and symptoms are important factors to assess when determining the underlying cause of the cough. For example;
1) a cough associated with a fever, SOB, and noisy breath sounds may indicate a?
2) Tightness of the chest associated with SOB and nonproductive cough is associated with?
1) Lung infection
2) Asthma
Orthopnea
Difficulty breathing when the individual is lying down
Paroxysmal nocturnal dyspnea
SOB that awakens the individual in the middle of the night, usually in a panic with the feeling of suffocation
Describing dyspnea
Count the words the the patient can say between breaths
Chest pain caused by respiratory disease is usually associated with disorders affecting the chest wall or parietal pleura (e.g. pneumonia). In contrast, chest pain associated with heart disease (primarily in men) is usually associated with?
Radiating pain to the jaw, left arm, and back and women report SOB, diaphoresis, nausea, epigastric pain, and fatigue
A sharp, abrupt pain associated with deep breathing may be an indication of?
Pleural lining irritation, also called pleuretic chest pain
-men reporting chest pain due to heart disease such as MI often describe viselike and tight chest pain, while women report other symptoms such as SOB
atelectasis
Collapse of alveoli
Indications of respiratory distress include an?
Appearance of apprehension, restlessness, nasal flaring, supraclavicular or intercostal retractions, use of accessory muscles
- pursed lip breathing: exhalation through the mouth with lips pursed together to slow exhalation seen in pt’s with COPD or asthma
- Tripod position suggests respiratory distress in pt’s w/COPD or asthma. Enhances accessory muscle use
- Paradoxical chest wall movement may occur after chest trauma when chest wall moves during inspiration and out during expiration
Respirations normal: An expected variation is the abdominal breathing pattern. Men tend to use?
Abdominal breathing (or diaphragmatic breathing), whereas women tend to use more thoracic breathing -a sigh is another expected variation observed with breathing. It is an occasional interspersed deep breath associated with an expected pattern
Respiration Abnormal findings
Bradypnea, tachypnea, hyperventilation, Kussmaul air trapping, and Cheynes-Stokes
- Chest retraction appears when intercostal muscles are drawn inward between the ribs and indicates airway obstruction that may occur during an asthma attack or pneumonia
- frequent sighing is considered an abnormal finding and may indicate fatigue or anxiety
Nail beds should be
pink, with an angle of 160 degrees at the nail bed
- skin and lip tones vary; therefore general color should be consistent with ethnicity
- in dark skinned patients cyanosis is assessed by inspecting the oral mucosa and lips
Abnormal findings for nails, skin, ips
Cyanosis or pallor of the nails, skin, or lips may be a sign of inadequate oxygenation of tissues caused by an underlying respiratory or cardiovascular condition
- yellow discoloration of fingers maybe associated with cigarette smoking
- clubbing of nails is associated with chronic hypoxia observed in patients with cystic fibrosis or COPD
Expected findings: Inspect the posterior thorax for shape, symmetry, and muscle development.
The ribs should slope down at about 45 degrees relative to the spine. The thorax should be symmetric. The spinous processes should appear in a straight line. The scapulae should be bilaterally symmetric. Muscle development should be equal