Respiratory Flashcards
FVC
Forced vital capacity = total volume of air exhaled during FEV testing
FEV
volume of air pt can exhale while performing a forced exhale (measured @ first second –> FEV1)
FEV1/FVC
% of FVC expired in 1 second
ABGs are indicated for
SpO2 < 92%
lung condition causing airway obstruction
Poor PFTs (FEV1 and/or FEV1/FVC ratio < 65%)
PaO2
pressure of O2 in blood and efficacy of moving O2 from lung into blood
DQ for PaO2 < 65 mmHg @ altitude below 5000 feet OR < 60 mmHg at altitude above 5000 feet
DQs for allergic rhinitis
severe conjunctivitis affecting vision
inability to keep eyes open
uncontrollable sneezing
sinusitis w/ severe HA
meds w/ sedating effects while driving
COPD
terminal bronchioles permanently enlarged w/ destruction of airspace walls
COPD monitoring
obvious dyspnea @ rest is indicated for repeat PFTs
FEV1 < 65% predicted = get ABGs
COPD DQs
hypoxemia @ rest
chronic RF
persistent cough w/ cough syncope
acute lung infections
do not certify if dx endangers health & safety of public
Latent pulmonary TB w/ negative CXR
no further action needed
Latent TB, max cert _______ if:
2 years
not contagious
compliant w/ tx w/o AE
dz remains stable w/ normal PFTs
Atypical TB organisms
mycobacterium avium/intracellulare –> typically no tx required
Chest wall deformities, max cert _______ if:
2 years
monitored w/ PFTs (FEV <65% –> ABGs if needed)
Chest wall deformities DQs
hypoxemia @ rest
chronic RF
cough syncope
Interstitial lung dz
max cert = 2 years if documentation of tx is obtained and driver complies w/ monitoring at appropriate specialist
Max cert for cystic fibrosis (CF)
1 year
Pneumothorax, max cert _______ if:
2 years
complete resolution on CXR (no air in pleural space, no pneumomediastinum)
pneumothorax absolute DQ
hx of 2 or more spontaneous pneumothorax on one side if no surgical procedure has been performed to prevent recurrence
Cor pulmonale
enlargement of RV secondary to disorder affecting lung structure
most common causes:
–COPD (hypoxic pulmonary vasoconstriction)
–Left heart dz (RV dilation)
Cor pulmonale
max cert = 2 years
DQ for:
–dizziness
–dyspnea/hypoxemia @ rest
–hypoTN
–PaO2 on ABG < 65 mmHG
pulmonary HTN
significant pulmonary artery pressure > 50% of systemic SBP (can occur w/ or w/o cor pulmonale)
max cert = 2 years
OSA criteria
BMI > 33 w/ 3 or more of the following:
HTN
T2DM
h/o CVA
arrhythmias
hypothyroidism (untreated)
loud snoring or witnessed apnea
small airway
neck size > 17” (men)
neck size > 15.5” (women)
42 years or older
post-menopausal
Standard CPAP compliance
use for 4+ hours per night x 70% of nights
