NBRC TMC Practice Test 1

10 free NBRC TMC practice questions in the real exam format, covering the official content areas, with an explanation for every answer.

NBRC TMC Practice Test 1Tutor mode

Question 1 of 10

Depth of Clinical Judgment

A 74-year-old woman with COPD was intubated in the ICU 6 hours ago for hypercapnic respiratory failure and is sedated, with no breaths above the set rate. Her settings, end-expiratory hold measurement and ABG are shown, along with the flow–time waveform. Which change is most appropriate?

Ventilator settings and data
Parameter	Value
Mode	Volume control
VT (mL)	450
Rate (/min)	24
Inspiratory flow (L/min)	54, square wave
Set PEEP (cm H2O)	5
Total PEEP on end-expiratory hold (cm H2O)	12
FiO2	0.35
pH	7.50
PaCO2 (mm Hg)	41
HCO3− (mEq/L)	31
PaO2 (mm Hg)	78

Flow–time waveform (volume control, square-wave flow)

Inspiratory flow is +54 L/min for 0.5 s; expiratory flow is still about −7 L/min when the next breath begins.