RRT RRT Ultimate 2

Question 1

A patient on volume-controlled ventilation has a sudden rise in peak airway pressure with no change in plateau pressure. What is the most likely cause?

Accepted Answer

Increased secretions in the airway

Answer

A rise in peak pressure with an unchanged plateau pressure indicates increased airway resistance, most commonly from secretions.

Question 2

Which arterial blood gas pattern is consistent with acute respiratory acidosis?

Accepted Answer

pH 7.30, PaCO2 58, HCO3 27

Answer

Acute respiratory acidosis shows low pH and elevated PaCO2 with near-normal bicarbonate (little renal compensation yet).

Question 3

A patient is receiving 60% FiO2 via mechanical ventilator. ABG shows PaO2 of 65 mmHg. What is the calculated P/F ratio?

Accepted Answer

108

Answer

P/F ratio = PaO2 / FiO2 = 65 / 0.60 = 108, indicating severe hypoxemia consistent with ARDS.

Question 4

Which of the following is the MOST appropriate initial ventilator setting for a 70 kg IBW patient with ARDS?

Accepted Answer

Tidal volume 420 mL, RR 18

Answer

ARDSnet protocol recommends 6 mL/kg IBW, so 70 kg × 6 = 420 mL with a higher RR to maintain adequate ventilation.

Question 5

A patient's spontaneous breathing trial (SBT) is terminated after 15 minutes due to RR of 36 and SpO2 of 88%. What is the BEST next step?

Accepted Answer

Resume full ventilatory support and reassess in 24 hours

Answer

A failed SBT warrants returning to full support; 24 hours of recovery is recommended before the next attempt.

RRT Exam Practice Test

RRT Exam Practice Test

RRT RRT Ultimate 2