1112 Practice Test 6

PSG Term 3

According to the RECOMMENDED guidelines, which is a required characteristic for scoring rhythmic movement disorder?

The maximum frequency is 2.0 Hz

According to the RECOMMENDED guidelines for scoring cardiac events in adults, which of the following is the BEST statement?

Asystole is a cardiac pause for three seconds or greater

Which of these types of studies requires a patient to try to stay awake for a period of time in a darkened room?

MWT

When performing a Bipap titration, what is the minimum gap that should exist between IPAP and EPAP?

4 cm

A physician orders call for a CPAP titration, starting at 4 cm. However, the technician only has a BIPAP machine available to him at the lab. What should the technician do?

Set the IPAP and the EPAP both at 4 cm

What should the technician do if the ABG report shows an SA o2 of 84%

Consult the lab protocol and the physician’s orders

A patient arrives to the sleep lab claiming he was referred for a CPAP titration. The technician is unable to locate the patient’s file or the doctor’s order. What should the technician do?

contact the physician

On a CPAP/BiPAP machine, the amount of air that the patient is breathing is referred to as the

pressure

Sleep on set during an MSLT is defined as

The first onset of sleep

If the patient has no REM periods during the first 4 naps of an MSLT, what should the technician do?

Allow the patient to go home

What is the standard verifying the CPAP pressure?

water column manometer

An obese 52-year-old man was discharged from the hospital with oxygen after having coronary bypass surgery. While in the hospital, breathing pauses were noted, and the patient is now being sent for evaluation of OSA. He arrives for a PSG and states that he uses oxygen as needed. The physician’s orders are to begin the study with oxygen at 12 l/m. The technologist should do which of the following?

Call the physician to verify the order for 12 lpm

Hyperventilation during sleep:

Can be accurately measured by transcutaneous CO2 monitoring

All of the following conditions are likely to contribute to episodes of hypoventilation and/or hypoxemia during sleep except:

diabetes

An irregular wave pattern seen in the respiratory effort channels may be an indication of:

All of the answer choices

You increased the CPAP pressure to 10 cm H2O and the apneas and hypopneas disappeared during NREM sleep. The patient then goes into REM sleep. What is the most probable change in the amount of pressure needed?

An increase in pressure due to the reduction of muscle tone in the upper airway and rib cage muscles during non-REM sleep

You have increased the CPAP to the point that the apneas and hypopneas disappear in your patient. What are the most likely changes in sleep architecture that you might expect to see during the remaining part of the recording (assuming the patient has no problem tolerating CPAP)?

REM and delta sleep rebound

A sudden appearance of apneas during a recording in a patient successfully treated with CPAP during both REM and non-REM sleep for the first half of the night might be explained by which of the following?

The patient moves to supine position

Which of the following is true about patients with central sleep apnea?

They might respond to CPAP

The morning after a CPAP titration, the patient may complain of which of the following?

Nasal dryness and sneezing

What range of values is considered normal for the pH level?

7.35 - 7.45

Sleep apnea can cause which of the following cardiovascular consequences?

All of the answer choices

What range of values is considered normal for HCO3?

22-26

A heavy smoker will have

A high HCO3

What is the duration requirement for an apnea?

10 seconds