Exam 3: Respiratory Flashcards
Upper Respiratory Tract
Nasal cavity, oral cavity, pharynx, larynx
Lower Respiratory Tract
Trachea, left lung (2 lobes), right lung (3 lobes)
Order of lung lining
Lung, visceral pleura, parietal pleura
Diaphragm: Contracting
pulls open rib cage, reduce pressure of chest cavity, air IN
Diaphragm: Relaxing
Contracts rib cage, increase pressure of chest cavity, pushes air OUT
Intercostal muscles def
muscles between ribs
Scalenes def
Muscles above clavicle
Affiliated cells def
clear lungs of foreign particles
Goblet cells
Produce mucus
Pulmonary arteriole def
Brings oxygen depleted blood from heart
Pulmonary venule def
Brings oxygenated blood back to the heart
3 Units to ensure fxn of respiratory system
Alveolar ventilation
Pulmonary perfusion
Gas Exchange
Alveolar ventilation def
Inhale (active)/exhale (passive)
Pulmonary perfusion def
Blood flow to lungs
Gas exchange def
ventilation and perfusion needed for gas exchange
Pathophysiology of ventilation: restrictive
Inability to effective breathe in
Ex. interstitial lung disease, infiltrative lung disease (pneumonia), disorders of pleura or chest wall, surgical resection of lung (lobe removed), pregnancy, obesity, ascites
Pathophysiology of ventilation: obstructive
Inability to effectively breathe out
Reduces FEV1/FVC ratio to <70%
Ex. Asthma
Pathophysiology of perfusion: pulmonary embolism
Blood clot prevents effective gas exchange
Respiratory assessment: sputum - mucoid
mucus is present
Respiratory Assessment: Sputum: Purulent
Contains pus
Respiratory Assessment: Sputum: yellow green
Upper respiratory infection
Respiratory Assessment: Sputum: rusty
Pneumococcal pneumonia
Respiratory Assessment: Sputum: pink
Blood mixed in alveoli/bronchioles
Pneumonia or pulmonary edema
Respiratory Assessment: Sputum: frothy
air bubbles from fluid in pulmonary capillaries that enters alveoli
Respiratory Assessment: Sputum: bloody
hemorrhage in respiratory tract, embolism, or trauma to the respiratory tract
Dyspnea def
shortness of breath
Orthopnea def
only occurs when laying flat, usually due to fluid distribution in lungs
Paroxysmal nocturnal dyspnea def
Sudden gasping for air when sleeping
Wheezing def
high pitched sound usually exhalation but can be either
Pleuritic pain def
chest pain when breathing, sharp/stabbing pain when inhaling (inflammation from pleural membranes)
Tachypnea def
> 18 bpm
Bradypnea def
<14bpm
Normal respirator rate
14-18bpm
Hypernea def
normal rate but deeper than usual
What causes cyanosis
lack of oxygen
What causes pallor
decreased blood flow
Normal breath sounds: bronchial sounds: location, pitchy, expiratory vs inspiratory sounds
listen over trachea and larynx
high pitched, loud
expiratory sounds > inspiratory
Normal breath sounds: bronchovesicular sounds: location, pitchy, expiratory vs inspiratory sounds
Listen over major bronchi or between scapula
Medium pitch and intensity
Expiratory = inspiratory
Normal breath sounds: vesicular sounds: location, pitchy, expiratory vs inspiratory sounds
Listen over smaller bronchioles and alveoli
Low pitched and soft
Inspiration>Expiration
Adventitious breath sounds: Rales/crackles sounds
Short, popping sounds
Most often during inhalation
Can indicate: infxn, inflammation, CHF
Adventitious breath sounds: Wheezes, stridor, and rhonchi
Wheezes - high pitched, heard over airways
Stridor - high pitched wheeze, heard over larynx
Rhonchi - low pitched, snoring quality
Adventitious breath sounds: Friction rub
Deep harsh, grating sound
inspiration > expiration
caused by rubbing of visceral and parietal pleura
Normal blood pH range
7.35-7.45
Normal PaO2 range
80-100mmHg
Normal PaCO2 range
35-45 mmHg
Normal SaO2 range
92-100 on room air
FVC def
forced vital capacity (biggest hardest exhalation)
FEV1 def
forced expiratory volume in 1 second (first second of exhalation)
Should be >70%
Peak flow meter: Green
80-100%, no action needed
Peak flow meter: Yellow
50-80%, asthma acting up, pt may need rescue med
Peak flow meter: Red
<50%, pt needs med and needs medical attention