ELCP EXAM QUESTIONS WITH 100% CORRECT
ANSWERS NEWEST 2025/2026 GRADED A+
Question:1
Which of the following statements is true regarding a modified mallampati
classification of the oral pharynx?
A. Mallampati II allows visualization of only the hard palate
B. Malampati III allows visualization of only the hard palate
C. Malampati classifications are taken with the patient sedated and reclined
D. Mallampati classifications of IV have greater odds ratio than Mallampati
classifications of I for severe OSA - ANSWER-D. Mallampati classifications of IV
have greater odds ratio than Mallampati classifications of I for severe OSA
Question:2
What 8 item questionnaire was developed to perioperatively screen for risk of
OSA?
A. ESS
B. STOP-BANG
C. MSLT
D. Berlin - ANSWER-B. STOP-BANG
1|Page
,Question:3
In the pathophysiology of sleep apnea, airway patency and stability is promoted
by which factor?
A. Increased lung volume
B. Shorter mandible
C. Increased parapharyngeal fat deposition
D. Negative inspiratory pressure
E. Reduced pharyngeal muscle dilator activity - ANSWER-A. Increased lung
volume
Question:4
Oral appliance therapy commonly provides successful sole therapy for which of
the following sleep-related breathing disorders?
A. Primary central sleep apnea
B. Cheyne-Stoke periodic breathing
C. Obesity hypoventilation
D. Overlap syndrome (OSA and COPD)
E. None of the above - ANSWER-E. None of the above
2|Page
,Question:5
Which of the following is true about OSA and HTN?
A. Ambulatory BP is increased in OSA patients primarily due to increased salt
intake associated with elevated ghrelin levels
B. Ambulatory BP normally increases in the early AM before awakening - this
increase is blunted in OSA
C. Untreated OSA is associated with a similar risk of HTN at all severity levels
D. The risk of HTN in untreated OSA is due to intermittent hypoxia, sympathetic
overactivation, inflammation, and other complex factors - ANSWER-D. The risk of
HTN in untreated OSA is due to intermittent hypoxia, sympathetic
overactivation, inflammation, and other complex factors
Question:6
Across a general population, what is the most common sleep disorder?
A. RLS
B. Narcolepsy
C. Delayed sleep phase syndrome
D. Insomnia
E. Obstructive sleep apnea - ANSWER-D. Insomnia
Question:7
Measurement has shown that patients with sleep apnea have smaller upper
airways than those without sleep apnea but manage to keep an open airway
during wakefulness by:
3|Page
, A. Mouth Breathing
B. Increased muscle tone on inspiration
C. Increased blood flow to the soft tissue
D. Frequent bruxing - ANSWER-B. Increased muscle tone on inspiration
Question:8
Key features of sleep apnea as recorded during an in-lab sleep study include
marked reduction or absence of air flow, arousals from sleep, slowing of heart
rate and:
A. Choking or gasping for air
B. Oxygen desaturation
C. Flattening of the nasal pressure signal
D. Flailing of the arms and legs
E. Sawtooth waves in the EEG - ANSWER-B. Oxygen Desaturation
Question:9
Who publishes the CPT codebook?
A. The Centers for Medicare and Medicaid Services
B. The American Medical Association
C. The Office of the Inspector General
D. The Durable Medical Equipment Service
4|Page
ANSWERS NEWEST 2025/2026 GRADED A+
Question:1
Which of the following statements is true regarding a modified mallampati
classification of the oral pharynx?
A. Mallampati II allows visualization of only the hard palate
B. Malampati III allows visualization of only the hard palate
C. Malampati classifications are taken with the patient sedated and reclined
D. Mallampati classifications of IV have greater odds ratio than Mallampati
classifications of I for severe OSA - ANSWER-D. Mallampati classifications of IV
have greater odds ratio than Mallampati classifications of I for severe OSA
Question:2
What 8 item questionnaire was developed to perioperatively screen for risk of
OSA?
A. ESS
B. STOP-BANG
C. MSLT
D. Berlin - ANSWER-B. STOP-BANG
1|Page
,Question:3
In the pathophysiology of sleep apnea, airway patency and stability is promoted
by which factor?
A. Increased lung volume
B. Shorter mandible
C. Increased parapharyngeal fat deposition
D. Negative inspiratory pressure
E. Reduced pharyngeal muscle dilator activity - ANSWER-A. Increased lung
volume
Question:4
Oral appliance therapy commonly provides successful sole therapy for which of
the following sleep-related breathing disorders?
A. Primary central sleep apnea
B. Cheyne-Stoke periodic breathing
C. Obesity hypoventilation
D. Overlap syndrome (OSA and COPD)
E. None of the above - ANSWER-E. None of the above
2|Page
,Question:5
Which of the following is true about OSA and HTN?
A. Ambulatory BP is increased in OSA patients primarily due to increased salt
intake associated with elevated ghrelin levels
B. Ambulatory BP normally increases in the early AM before awakening - this
increase is blunted in OSA
C. Untreated OSA is associated with a similar risk of HTN at all severity levels
D. The risk of HTN in untreated OSA is due to intermittent hypoxia, sympathetic
overactivation, inflammation, and other complex factors - ANSWER-D. The risk of
HTN in untreated OSA is due to intermittent hypoxia, sympathetic
overactivation, inflammation, and other complex factors
Question:6
Across a general population, what is the most common sleep disorder?
A. RLS
B. Narcolepsy
C. Delayed sleep phase syndrome
D. Insomnia
E. Obstructive sleep apnea - ANSWER-D. Insomnia
Question:7
Measurement has shown that patients with sleep apnea have smaller upper
airways than those without sleep apnea but manage to keep an open airway
during wakefulness by:
3|Page
, A. Mouth Breathing
B. Increased muscle tone on inspiration
C. Increased blood flow to the soft tissue
D. Frequent bruxing - ANSWER-B. Increased muscle tone on inspiration
Question:8
Key features of sleep apnea as recorded during an in-lab sleep study include
marked reduction or absence of air flow, arousals from sleep, slowing of heart
rate and:
A. Choking or gasping for air
B. Oxygen desaturation
C. Flattening of the nasal pressure signal
D. Flailing of the arms and legs
E. Sawtooth waves in the EEG - ANSWER-B. Oxygen Desaturation
Question:9
Who publishes the CPT codebook?
A. The Centers for Medicare and Medicaid Services
B. The American Medical Association
C. The Office of the Inspector General
D. The Durable Medical Equipment Service
4|Page
