Author: Anonymous

You are caring for a ventilated patient who is a 79 year old morbidly obese male with severe COPD. Current ventilator settings are SIMV with pressure support VT 600 rate 12 FiO2 40% and PEEP of 5. Current chest radiograph reveals hyper inflation with a lower lobe infiltrate. Current ABGs are within normal limits. However, the low minute ventilation alarm begins alarming and you note the minute ventilation is 2.9 liters. This alarm could be caused by: I. An over inflated cuff on the endotracheal tube II. A leak in the ventilator circuit III. A dislodged endotracheal tube IV. A pneumothorax

Mechanical dead space could be best defined as:

Which of the following is correct regarding the amount of water in the suction bottle of a chest drainage system?

The I/E ratio refers to:

Calculate the RSBI given a tidal volume of 350 ml and a respiratory rate of 25.

Using a 3-bottle chest tube drainage system in the presence of a hemothorax, the purpose of the drainage bottle is to: I. act as a “one-way valve” for flow.  II. measure the amount of drained fluid.  III. serve as a collection chamber for fluid.

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Given the following, calculate shunt %. CaO2 19 Vol. %CcO2 20 Vol %CvO2 15 Vol %