Questions And Verified Answers
\.ventilation
inspiration and expiration
the flow of gas in and out of the lungs
\.diffusion
process by which 02 and C02 are exchanged at the air-blood interface. Through the alveolar-
capillary membrane
\.Perfusion
actual blood flow through the pulmonary circulation. The blood is pumped into the lungs by the
right ventricle through the pulmonary artery.
\.LOW V/Q imbalance
is reduced ventilation when unoxygenated blood moves from right to left side of heart
SHUNT normal shunt
\.NORMAL in V/Q imbalance
we want the ventilation perfusion to be 4:5=0.8 if it doesn't happen then SHUNT can happen
were the 2% of unoxygenated blood can increase and cause problem in the body
\.HIGH V/Q
Dead space
is adequated ventilation to impaired perfusion
results in hypoxia
02 may help but perfusion is impaired
\.Silent Unit V/Q ventilation
is absence of both ventilation and perfusion
shunt and dead space
, \.RESP Age Consideration
decline in early-middle adulthood
age 40-change in alveoli
age 50- lose elasticity
loss of chest wall
increase dead space
\.RESP RISK FACTOR
smoking
2nd hand smoking
genetic
allergens
occupational exposure
\.Assessment of Resp Disease
health history- dyspnea, cough, sputum, chest pain, cyanosis, wheezing, family history
diagnostic evaluation- ABG,Sp02, MRI,PET, pulmonary angiography, lung scans,
\.Allen Test
check hand circulation by occluding the radial and ulnar arteries
\.Obstructive Sleep Apnea definition (OSA)
is the recurrent upper airway obstruction and reduced ventilation with cessation of breathing
through sleep
\.Obstructive sleep apnea increase risk
increase risk- hypertension, heart attack, stroke, death
seen- men, older adult, obese
\.clinical manifestation, diagnosis, management, OSA
S/S-loud snoring, cessation of breathing, abrupt awakening, insominia, excessive daytime
sleepiness, irritability, HTN,
diagnosis-sleep study,eeg, symptoms
management- wt loss, oral appliance, CPAP,surgery, meds (provigil)
\.CPAP
continuous positive airway pressure
keeps upper airway and trachea open to prevent resp failure