NBRC Critical Care and ABG Interpretation 3

Question 1

The target PaCO2 during CPR for an adult patient is:

Accepted Answer

35–45 mmHg

Answer

20–25 mmHg

Answer

30–35 mmHg

Answer

50–60 mmHg

Question 2

Acute cor pulmonale on the 12-lead ECG may show all of the following EXCEPT:

Accepted Answer

Peaked P waves in leads II, III, aVF (P pulmonale)

Answer

Right axis deviation

Answer

S1Q3T3 pattern

Answer

Right bundle branch block

Question 3

Continuous renal replacement therapy (CRRT) is preferred over intermittent hemodialysis in critically ill patients primarily because it:

Accepted Answer

Causes less hemodynamic instability in hypotensive patients

Answer

Provides faster toxin clearance

Answer

Does not require anticoagulation

Answer

Can be managed without ICU nursing

Question 4

Extracorporeal membrane oxygenation (ECMO) provides gas exchange support by:

Accepted Answer

Withdrawing blood, oxygenating it externally, and returning it to the patient

Answer

Delivering 100% oxygen directly to the alveoli

Answer

Using high-frequency oscillation to recruit alveoli

Answer

Administering inhaled nitric oxide continuously

Question 5

Which ventilator setting directly affects the rate of CO2 elimination?

Accepted Answer

Minute ventilation (respiratory rate × tidal volume)

Answer

FiO2

Answer

PEEP

Answer

Inspiratory flow rate

Question 6

A patient with ARDS has a PaO2 of 55 mmHg on FiO2 of 0.8 and PEEP of 12 cmH2O. The P/F ratio is:

Accepted Answer

69

Answer

44

Answer

97

Answer

440