1. What is the initial treatment modality of choice for a patient with Obstructive Sleep Apnoea (OSA)?

• Continuous Positive Airway Pressure (CPAP)
• Mandibular Advancement Devices (MADs)
• Lifestyle modifications
• Surgical intervention

2. A 45-year-old male patient presents with complaints of excessive daytime sleepiness, loud snoring, and witnessed apnoeas during sleep. He has a body mass index (BMI) of 32 kg/m2 and a neck circumference of 17 inches. The Epworth Sleepiness Scale score is 15. The patient has tried lifestyle modifications such as weight loss and sleeping on his side but has not experienced any improvement in symptoms. What would be the most optimal next step in managing this patient?

• Refer the patient for surgical correction of OSA immediately.
• Continue conservative management and reassess in 6 months.
• Refer the patient for a sleep study to confirm the diagnosis before considering surgical correction.
• Refer the patient to an otolaryngologist for evaluation and discussion of surgical options.

3. What is the ideal Continuous Positive Airway Pressure (CPAP) setting to use for patients with Obstructive Sleep Apnoea (OSA)?

• 4 cm H2O
• 8 cm H2O
• 12 cm H2O
• 16 cm H2O

4. What are the patient scenarios where it is recommended to switch from CPAP to BiPAP for patients with obstructive sleep apnoea (OSA)?

• When the patient experiences persistent daytime sleepiness despite adequate CPAP therapy.
• When the patient has difficulty tolerating high CPAP pressures.
• When the patient presents with central sleep apnoea in addition to OSA.
• When the patient develops chronic respiratory failure.

5. What are the ideal BiPAP settings for a patient with Obstructive Sleep Apnoea (OSA) who is prescribed BiPAP therapy?

IPAP: Inspiratory Positive Airway Pressure
EPAP: Expiratory Positive Airway Pressure

• IPAP of 8 cmH2O and EPAP of 4 cmH2O
• IPAP of 12 cmH2O and EPAP of 8 cmH2O
• IPAP of 6 cmH2O and EPAP of 4 cmH2O
• IPAP of 10 cmH2O and EPAP of 6 cmH2O