Top 10 Questions for Polysomnography Technician Interview

1. What are the different types of sleep studies and what are the indications for each of them?

• Polysomnography (PSG): Used to diagnose sleep apnea, narcolepsy, and other sleep disorders.
• Multiple Sleep Latency Test (MSLT): Used to assess daytime sleepiness in patients with suspected narcolepsy.
• Maintenance of Wakefulness Test (MWT): Used to evaluate the ability to stay awake during the daytime in patients with excessive daytime sleepiness.
• Titration study: Used to adjust CPAP or other airway pressure therapy devices for sleep apnea patients.

2. What are the key components of a polysomnogram (PSG)?

• Electroencephalogram (EEG): Measures brain activity.
• Electrooculogram (EOG): Measures eye movements.
• Electromyogram (EMG): Measures muscle activity.
• Electrocardiogram (ECG): Measures heart activity.
• Respiratory effort belts: Measure chest and abdominal movements.
• Pulse oximetry: Measures oxygen saturation levels.

3. How do you score sleep stages according to the American Academy of Sleep Medicine (AASM) guidelines?

• Stage N1: Light sleep characterized by low-amplitude, mixed-frequency EEG waves.
• Stage N2: Deeper sleep characterized by sleep spindles (brief bursts of EEG activity) and K-complexes (large, sharp EEG waves).
• Stage N3 (Slow-wave sleep): Deepest sleep characterized by high-amplitude, slow EEG waves.
• REM sleep: Characterized by rapid eye movements, low muscle tone, and vivid dreams.
• Wake: Periods of wakefulness during the study.

4. What are the different types of apneas and hypopneas?

• Obstructive apnea: Cessation of airflow due to blockage of the upper airway.
• Central apnea: Cessation of airflow due to a lack of respiratory effort.
• Mixed apnea: A combination of obstructive and central apnea.
• Hypopnea: A reduction in airflow by at least 50% for at least 10 seconds, often associated with an arousal.

5. How do you interpret a PSG report?

• Identify sleep stages and duration.
• Calculate sleep efficiency (total sleep time / total study time).
• Analyze respiratory events (apneas, hypopneas, RDI).
• Note any abnormal EEG patterns, muscle activity, or cardiac events.
• Summarize the findings and make recommendations for further testing or treatment.

6. What are the most common challenges you have faced as a polysomnography technician? How did you overcome them?

• Technical issues with equipment: Troubleshoot equipment to ensure proper recording and data collection.
• Patient discomfort: Assist patients with positioning, use relaxation techniques, and address any concerns to minimize discomfort.
• Patient movement: Use restraints or reposition patients if excessive movement interferes with data collection.
• Difficult-to-diagnose cases: Collaborate with the sleep physician to discuss findings and explore alternative diagnostic tests.

7. How do you maintain your knowledge and skills as a polysomnography technician?

• Attend continuing education courses and workshops.
• Read peer-reviewed journals and industry publications.
• Participate in professional organizations (e.g., American Academy of Sleep Medicine).
• Stay updated on technological advancements and new diagnostic criteria.

8. What are the ethical considerations involved in polysomnography?

• Maintain confidentiality of patient information.
• Obtain informed consent prior to conducting studies.
• Respect patient autonomy and preferences.
• Ensure accurate and unbiased interpretation of data.

9. How do you handle patients who are anxious or nervous about sleep studies?

• Explain the procedure clearly and address any concerns.
• Provide a comfortable and relaxing environment.
• Use relaxation techniques (e.g., deep breathing, guided imagery).
• Consider offering anxiolytics or sedatives as prescribed by the physician.

10. What is your experience with using specialized equipment, such as CPAP or ASV devices, in polysomnography?

• Experience with setting up, calibrating, and monitoring CPAP and ASV devices.
• Knowledge of different types of masks and interfaces.
• Ability to interpret data and adjust device settings to optimize therapy.
• Troubleshooting and resolving any technical issues related to these devices.

Polysomnography Technicians play a crucial role in the diagnosis and treatment of sleep disorders. Their primary responsibilities include:

1. Patient Preparation

Prepare patients for polysomnography studies by explaining the procedure, applying sensors, and ensuring their comfort

2. Data Acquisition

Monitor patients during polysomnography studies and record physiological data, including brain activity, breathing, muscle activity, and oxygen saturation

3. Data Analysis

Analyze polysomnography data to identify sleep patterns, abnormalities, and potential sleep disorders

4. Equipment Maintenance

Maintain and calibrate polysomnography equipment to ensure accuracy and reliability

To ace the Polysomnography Technician interview, follow these tips:

1. Research the Company and Role

Thoroughly research the hospital or sleep center you’re applying to and the specific role you’re seeking. This shows your interest and preparation.

2. Practice Common Interview Questions

Prepare answers to common interview questions related to your experience, skills, and why you’re interested in the position. Example Outline:

• Tell us about your experience as a Polysomnography Technician.
• Describe a time when you had to troubleshoot a problem with polysomnography equipment.

3. Highlight Your Technical Skills

Emphasize your understanding of polysomnography equipment and analysis techniques. Mention any certifications or experience that demonstrates your technical proficiency.

4. Showcase Your Patient Care Skills

Highlight your ability to interact effectively with patients, explain technical procedures, and provide reassurance during studies. Example Outline:

• Describe a situation where you had to comfort a nervous patient.
• Explain how you maintain patient privacy and confidentiality.