Pulmonology Flashcards
Mild hypoxia SpO2 levels and who this is most common in
91-94%
Elderly, obese, smokers
Biggest contraindication for CT with contrast
Chronic or acutely worsening renal disease
What is the “5th vital sign”?
Arterial oxygenation measured by pulse oximeter
Is a total lung capacity <80% suggestive of obstructive or restrictive lung disease?
Restrictive
Three most common causes of cough
Infectious agents
Sinus drainage
Acid reflux
Diagnostic labs (3) used in patients with dyspnea
BNP
D-dimer
ABGs
Preferred imaging method for evaluating incidental pulmonary nodules
CT scan WITHOUT contrast
Is an FEV1/FVC ratio <70% suggestive of obstructive or restrictive lung disease?
Obstructive
Follow-up is not required for lung nodules of this size in patients 35 or older without symptoms or risk factors of lung cancer
<6mm
Which cause of dyspnea is of mixed origin (cardiac and pulmonary)
Pulmonary emboli
Normal ranges on ABGs for:
1.) pH
2.) PaO2
3.) PaCO2
4.) HCO3
1.) pH - 7.35 to 7.45
2.) PaO2 - 80 to 100 mmHg
3.) PaCO2 - 35 to 45 mmHg
4.) HCO3 - 22 to 26 mmHg
Spirometry improvement with bronchodilator administration is more common in COPD or asthma?
Asthma
When CT with contrast is contraindicated, what can be used to assess likelihood of PE?
V/Q scan (nuclear)
pH - 7.12
PaO2 - 95
PaCO2 - 44
PaHCO3 - 12
Diagnose me!
Metabolic acidosis, uncompensated
Name the three corners of Virchow’s Triad
Vascular injury
Circulatory stasis
Hypercoagulable state
Gold standard for evaluating a PE
CTPA
pH - 7.38
PaO2 - 86
PaCO2 - 46
PaHCO3 - 32
Diagnose me!
Metabolic alkalosis, fully compensated
S1Q3T3 EKG changes are suggestive of …
Pulmonary embolism
Breathing faster will increase or decrease PaCO2?
Decrease
A normal shaped, small-sized flow-loop pattern is suggestive of …
Restrictive lung disease
True or false. A negative d-dimer is sufficient to rule out DVT/PE
True
What might you see in a chest x-ray of a patient with acute heart failure?
Cardiomegaly
Cephalization (stag)
Interstitial edema
Vascular congestion
Pleural effusions
Three indications for chest CT angiography
PE
Aortic aneurysm
Aortic dissection
Common reasons (3) for anion gap to be elevated
Lactic acidosis
Renal failure
Ketoacidosis
Two major types of CT with contrast
Helical and Axial
Diagnostic tests (7) used in patients with dyspnea
EKG
Pulse oximetry
CXR
Ultrasound
V/Q scan
CT scan
PFTs
Normal SpO2 levels
95-100%
This diagnostic lab test checks the function of a patient’s lungs and how well they are able to move oxygen in to and CO2 out of the blood
ABGs
CBC findings with pulmonary hypertension
Polycythemia (chronic hypoxia)
Most common cause of hemoptysis
Infection (60-70%)
(consider lung cancer though if patient is a big smoker)