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Flashcards in Labs & Tests Deck (17)
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1
Q

Plasma levels of what are elevated in the presence of thrombus?

A

D-dimer

2
Q

The D-dimer provides strong evidence against what condition if it’s normal?

A

VTE, PE - it is highly sensitive

3
Q

An elevated sodium and chloride levels are found in the sweat of what kind of patients?

A

cystic fibrosis

4
Q

What level of PaO2 is consider hypoxic?

A

<60 mmHg

5
Q

Primary study for Pulmonary embolism?

A

CT Angiography

6
Q

Study used to evaluate OSA?

A

Polysomonography

7
Q

T/F. V/Q scans are indicated in patients with primary pulmonary hypertension.

A

FALSE!!

8
Q

What else is Polysomnography indicated in?

A

Diagnosis and treatment of pulmonary hypertension secondary to OSA.

9
Q

What test is indicated in patients with a new pleural effusion and no clinically apparent cause OR if atypical presentation?

A

Thoracentesis

10
Q

What’s on the WELLS criteria:

A
Leg swelling or pain
HR > 100
Immobilization > 3 days
Surgery < 4 wks
Previous PE or DVT
Hemoptysis
Cancer
11
Q

What non-PE things can cause an elevated DDimer?

A

malignancy, DIC, pregnancy, infection

12
Q

Because ABG testing is impractical in most outpatient settings, what has assumed a central role in the office evaluation of dyspnea?

A

Pulse oximetry

13
Q

T/F: UIP (intersitial pneumonia) can be confirmed on transbronchial lung biopsy

A

FALSE. requires SURGICAL lung biopsy.

14
Q

Which bronchoscopy methods requires general anesthesia? Rigid or flexible?

A

RIGID

15
Q

What spirometry values are markedly DECREASED in OBSTRUCTIVE Lung diseases?

A
FEV1 and FEVI/FVC ratio
also PEFR (peak flow)
16
Q

What spirometry values are INCREASED in OBSTRUCTIVE lung diseases?

A

TLC

RV

17
Q

What spirometry values are DECREASED in RESTRICTIVE lung diseases?

A

TLC

RV