TMC PRACTICE EXAM 1 ACTUAL QUESTIONS AND

TMC PRACTICE EXAM 1 ACTUAL / QUESTIONS AND

ANSWERS VERIFIED/GRADED A+

Which of the following describes the correct procedure for performing a modified Allen's test?

Select one:

• compress both the radial and ulnar arteries then release

the radial artery

• compress both the radial and ulnar arteries then release

the ulnar artery

• compress both the radial and ulnar arteries then release

both arteries at once

• compress the brachial artery only and observe circulation

to the hand - ---Answers----To perform the modified Allen's test, 1) the patient clenches his hand into a tight fist while you apply pressure to both the radial and ulnar arteries; 2) the patient then opens his hand without fully extending it (the palm and fingers are blanched); 3) you maintain pressure on the radial artery while removing pressure on the ulnar artery. At this point you should observe flushing of the entire hand, indicating the presence of collateral circulation.

The correct answer is: compress both the radial and ulnar

arteries then release the ulnar artery 1 / 4

A patient is receiving volume controlled ventilation at a rate of 10/min. The percent inspiratory time (%I) control is set at 25%.What is the inspiratory time?

Select one:

• 1.00 sec
• 1.25 sec
• 1.50 sec
• 1.75 sec - ---Answers----Given the rate (f) and percent

inspiratory time (%I), the inspiratory time (I) is computed as:I =

%I x (I + E)In this case (I + E) = 60/10 = 6 sec; I = 0.25 x 6 = 1.50 sec

The correct answer is: 1.50 sec

Sputum induction is performed on a trach patient to gather a sample for microbiological identification. The sample is collected using a Lukens trap. When applying suction after entering the airway, the mucus should

Select one:

• pass into the trap and then move on into the collection jar
• pass through the wall tubing and then into the Lukens trap
• pass through the suction catheter and then enter the

Lukens trap 2 / 4

• pass into the Lukens trap and then enter the suction

catheter - ---Answers----A Lukens trap is used to collect sputum samples during suctioning or bronchoscopy. To use the trap, the therapist places it between the suction catheter and the suction system's connecting tubing, while maintaining its internal sterility. When suction is applied, secretions should then pass through the suction catheter and enter the Lukens trap. After gathering the desired specimen, the trap is sealed (with its own connecting tubing) and processed for laboratory study.

The correct answer is: pass through the suction catheter and

then enter the Lukens trap

The radial site is preferred for arterial puncture or cannulation

because:

Select one:

• the radial artery is the most superficial artery available
• other available arteries are too small to easily puncture
• the radial artery has the highest systolic pressure available
• collateral circulation is provided through the ulnar artery - -

--Answers----The radial site is preferred for arterial puncture or cannulation because of the extra safety provided by collateral circulation through the ulnar artery.

The correct answer is: collateral circulation is provided

through the ulnar artery 3 / 4

Based on overnight oximetry results, a COPD patient receiving continuous long-term oxygen therapy at 1 L/min exhibits a drop in SpO2 from 90% to 84% at night. Which of the following would you recommend for this patient?

Select one:

• have the patient undergo polysomnography to determine the

cause of the desaturation

• titrate the patient's nocturnal O2 flow upward until the SpO2

remains above 88%

• change the continuous oxygen therapy prescribed flow from
• to 2 L/min
• titrate the patient's nocturnal O2 flow upward until the SpO2

remains above 92% - ---Answers----For COPD patients already certified for continuous long-term oxygen therapy who also exhibit nocturnal desaturation, the liter flow can be titrated upward in 1 L/min increments until the nighttime SpO2 consistently exceeds 88% and no further desaturation events occur.

The correct answer is: titrate the patient's nocturnal O2 flow

upward until the SpO2 remains above 88%

You are gathering a sputum specimen from a patient in isolation. In addition to applying appropriate transmission- based precautions, which of the following procedures should be followed in processing this specimen?

• / 4