Week 9 Flashcards
What traps dust and smoke
hair and mucus
What prevents food and liquid from entering lower respiratory tract
epiglottis
Where does conducting zone start and end
trachea to bronchus
where does respiratory zone begin
bronchioles with alveoli
where does gas exchange occur at
respiratory zone (bronchioles with alveoli)
What prevents alveoli walls from collapsing and sticking together
slightly oily surfactant
What monitors PaCO2
Central chemoreceptors in medulla oblongata
what monitors PaO2 and blood pH
Peripheral chemoreceptors in carotid and aortic arch
What is respiratory failure
when lungs fail to oxygenate arterial blood adequately to prevent carbon dioxide retention
hypoxemia
partial pressure of oxygen <60mmHg
Reduced PaO2 in arterial blood
Leads to tissue hypoxia
hypoxemia AKA
type I respiratory failure
hypocapnia
partial pressure of carbon dioxide > 50 mmHg
hypocapnia AKA
type II respiratory failure
Mild symptoms of hypoxemia
Decreased mental power, visual, tachypnea
profound symptoms of hypoxemia
CNS, CVS, Respiratory
Tissue hypoxia
inadequate cellular oxygenation
tissue hypoxia effects
CNS, Myocardium, Renal, Vascular
CNS effect of tissue hypoxia
hypoxic ischemic encephalopathy
How to identify respiratory failure
Vital signs, GCS, Respiratory findings
How to stabilize patients with respiratory failure
airway, breathing, circulation
what needs to be investigated for respiratory failure
arterial blood gas, CXR, CT scans
ABG is taken from ___
radial, brachial, femoral arteries
lung cancer symptoms related to __
primary lesion, intrathoracic spread, distant metastasis, paraneoplastic (unusual hormone expression)
ways to diagnose lung cancer
CXR, CT scan, PET scan, biopsy
what is the most common screening test for lung cancer
CXR
radiological findings for lung cancer
- coin lesions
- large irregular masses
- alveolar consolidation
stage 1 of lung cancer signs
tumor is 1-4cm
stage 2 of lung cancer signs
tumor is 3-7cm, may be in lymph nodes / surrounding tissues
stage 3 of lung cancer signs
tumor is 3-7cm, disease in more than 1 lymph node / surrounding tissues
stage 4 of lung cancer signs
metasized cancer
NSCLC stage I
local disease
NSCLC stage II
resectable
NSCLC stage IIIa
locally advanced resectable
NSCLC stage IIIb
locally advanced unresectable
NSCLC stage IV
far advanced
diff types of NSCLC
- adenocarcinoma
- squamous cell carcinoma
- large cell carcinoma
diff types of small cell lung carcinoma
- combined small cell carcinoma
- oat cell carcinoma
what is the lung test function to diagnose asthma
spirometry