How to Get the Most from Your Sleep Clinic: Questions Every CPAP User Should Ask
NHS sleep clinic appointments can be short and infrequent. Knowing exactly what to bring, what to ask, and how to read your own data means you leave every review with the answers and adjustments you actually need.
Sleep clinic appointments on the NHS can be short sometimes as little as 15 to 20 minutes, with gaps of six to twelve months between reviews. For a therapy that is ongoing, seasonal, and highly sensitive to equipment fit and settings, that leaves a great deal of ground to cover in very little time. Patients who arrive knowing what they want to discuss, with their data in hand and their questions ready, consistently get more from these appointments than those who rely on the clinician to know what needs addressing. This guide tells you exactly how to be the first kind of patient.
Understanding Your Sleep Clinic Appointment
NHS sleep and respiratory clinics vary considerably in how they are structured. Some operate as consultant-led services where you see a respiratory physician. Others run nurse-led or physiotherapist-led CPAP review clinics that focus more specifically on equipment, adherence, and comfort. Some services have moved to telephone or video review for routine follow-ups. Understanding what kind of appointment you have and therefore what decisions can be made in that appointment versus what requires a medical consultant helps you prepare the right questions for the right person.
Types of Sleep Clinic Appointments and What Each Can Typically Address
👨⚕️ Nurse / Physiotherapist CPAP Review
Equipment & Adherence Focus
Can address: mask fit and remask, humidifier settings, tube issues, cleaning routine, adherence support, device data interpretation, minor comfort issues, replacement equipment. May refer to consultant for: pressure changes, new or significantly worsening symptoms, co-existing conditions, BiPAP/ASV consideration.
👨⚕️ Consultant Respiratory Physician Review
Clinical & Diagnostic Focus
Can address: all of the above, plus prescribed pressure changes, new diagnostic interpretation, device type changes (CPAP to BiPAP/ASV), co-existing respiratory or cardiovascular concerns, driving licence notifications, and treatment pathway decisions. Appropriate for complex or unresolved cases.
Ask in advance what type of appointment you are attending. When your appointment letter arrives, or when you confirm the date, ask whether you will be seeing a consultant, a specialist nurse, or a physiotherapist, and whether it will be face-to-face or remote. This tells you exactly what level of decision-making is available in that appointment and helps you bring the right questions and, if needed, flag in advance that you have specific clinical questions that require medical review.
What to Bring to Every Sleep Clinic Review
📋 Data & Records
Your CPAP device (or its SD card if data is stored there)
Screenshot or printout of MyAir / DreamMapper data for the past 90 days
A note of your average AHI, leak rate, and usage hours over that period
Your list of written questions
Your current prescribed pressure settings (on your device or original setup letter)
Notes on any specific nights or patterns that concerned you
📝 Symptom & Concern Notes
Any persistent symptoms still affecting you (daytime sleepiness, dry mouth, headaches)
Specific comfort problems with your current mask or equipment
Any new health changes since your last appointment (new medications, new diagnoses)
Changes to your sleep pattern or circumstances (job change, weight change, pregnancy)
Any nights where therapy felt significantly different or data looked unusual
Questions from a partner or family member who has noticed something relevant
🕑 Write your questions down before the appointment do not rely on memory. When you are in an appointment that feels time-pressured, it is very easy to forget the question that mattered most to you at 2am three weeks ago. Keep a running note on your phone or a paper notepad across the months between appointments, adding anything that occurs to you as it happens. Walk into the clinic with a ranked list. If time runs out before you reach the bottom of the list, tell the clinician at the start of the appointment which questions matter most this helps them prioritise alongside you rather than discovering the most important issue in the final two minutes.
A structured three-phase approach to sleep clinic appointments. Preparation before, active engagement during, and disciplined follow-through after each appointment maximises the value of limited clinic time.
Understanding Your Own Data Before You Arrive
Walking into a review with a working understanding of your own therapy data transforms you from a passive recipient of clinical information into an active participant in the conversation. You do not need to understand the nuances of CPAP data interpretation at clinical depth you need to understand three numbers and what they broadly mean.
AHI
AHI
Apnoea-Hypopnoea Index the number of breathing interruptions per hour of sleep. This is your primary measure of how well your OSA is controlled on therapy.
Target: below 5 on therapy
Leak Rate
L/min
The volume of air escaping from your mask per minute. A high leak rate means pressurised air is escaping rather than doing therapeutic work typically due to mask fit issues.
Target: below 24 L/min (device-specific)
Usage Hours
hrs/night
How many hours per night the device was running. Clinical benefit is generally associated with consistent use above four hours per night, with longer use typically better.
Target: 7+ hours most nights
Your MyAir app (ResMed) or DreamMapper (Philips) displays these three metrics clearly for each night and as rolling averages. Before your appointment, review the past 90 days and note your average AHI, your most common leak rate, and the proportion of nights you used therapy for at least four hours. This is the core factual picture your clinical team will also be looking at arriving with it already understood means you can discuss it as a conversation rather than receiving it as a one-way clinical briefing.
The Questions to Ask at Every Appointment
The following questions are organised by category. Not every question will be relevant to every appointment focus on the ones that match your current concerns and always lead with the ones that matter most to you.
📊
Therapy Effectiveness
Understanding your data and whether therapy is working
1
What does my AHI data show, and is my therapy effectively controlling my sleep apnoea?
The foundation of every review. An AHI consistently below 5 on therapy is the general clinical target. Ask what your current average AHI is, what the clinic considers a satisfactory result for you, and whether any intervention is needed.
2
Are there any concerning patterns in my data that I should know about?
Beyond the headline AHI number, ask whether your clinician can see treatment-emergent central apnoeas, position-dependent patterns, or significant night-to-night variability that might warrant investigation.
3
Is my prescribed pressure still appropriate, or is a review warranted?
Appropriate pressure can change with weight gain or loss, new medications, seasonal changes, or progression of the underlying condition. Ask whether your current setting remains optimal given your current data.
😮
Equipment & Comfort
Mask fit, hose, humidifier, and accessory questions
4
Is my current mask style still the best option for my face shape and pressure?
Mask technology evolves regularly, and a mask that was the best available option two years ago may no longer be. Ask whether there are newer options worth trialling, particularly if you have had persistent comfort or leak issues.
5
Am I using my humidifier optimally, and are there seasonal adjustments I should make?
Many patients have never been specifically guided on seasonal humidifier adjustment. Ask whether your current setting is appropriate for the current season, and what you should do when temperatures change significantly.
6
What replacement equipment am I entitled to, and how often?
NHS provision of replacement masks, cushions, tubing, and headgear varies between trusts and is often not proactively offered. Ask explicitly what replacements you are entitled to under your service's schedule and how to request them.
😴
Residual Symptoms
If you still feel sleepy, unrefreshed, or symptomatic despite using CPAP
7
I am still experiencing daytime sleepiness despite good therapy data what could explain this?
Persistent sleepiness despite well-controlled AHI can have several causes: co-existing sleep disorders (restless legs, periodic limb movement disorder, narcolepsy), insufficient total sleep time, depression, medication side effects, or other medical conditions. Ask what your clinic recommends investigating next.
8
Are there other sleep disorders I should be assessed for?
OSA is common enough that it can be diagnosed and treated while another condition is missed. If your symptoms do not match what you would expect from treated OSA, ask whether further investigation such as an in-lab polysomnography or specialist referral is appropriate.
🚗
Life Changes & Driving
DVLA obligations, weight changes, new circumstances
9
Does my DVLA notification status still reflect my current treatment and control?
UK DVLA regulations require some patients with OSA to notify the DVLA and may require confirmation of effective treatment before certain driving licences are maintained. If your therapy control has changed, or you are unsure what your current obligation is, ask the clinic to clarify and document their guidance.
10
My weight / circumstances have changed significantly does my therapy need reviewing as a result?
Significant weight gain or loss, a new pregnancy, a new job with shift work, a new medication, or a change in living situation can all affect OSA severity and therefore optimal therapy settings. Flag any significant change since your last appointment, even if you think it might be irrelevant.
Questions Specific to Your Appointment Type
If You Are at a…
Specific Questions Worth Asking
First CPAP setup appointment
What is my starting AHI? What pressure am I being set to and why? When is my first review? Who do I contact if something is wrong before then? How do I access replacement supplies?
One-month first review
What does my first month of data show? Is the mask fitting correctly? Are there any adjustments to make now? Am I using it enough nights to see the full benefit? What should I focus on in the next two months?
Annual routine review
Has my AHI changed compared with last year? Is my current mask and equipment still the best option available? What has improved and what still needs addressing? Do I need a new sleep study?
Review following a complaint or problem
Can you explain specifically what my data shows during the nights the problem occurred? What is your recommendation for addressing it? How long should I give any change before judging whether it works? When should I come back if it does not improve?
Remote / telephone appointment
Will you be able to review my device data remotely? Do you need me to share any screenshots or reports before the call? Are there any changes that will need an in-person visit to implement properly?
How to Advocate for Yourself When Appointments Feel Rushed
NHS sleep clinics are often under significant demand, and appointment slots may feel shorter than the complexity of your situation warrants. Knowing how to advocate effectively without being confrontational is a genuinely useful skill in this context.
State Your Most Important Concern in the Opening 60 Seconds
Do not wait to be asked
When the clinician opens the appointment, state clearly and specifically what your most important concern is before answering their initial questions. For example: "I want to mention that despite consistent CPAP use, I am still very sleepy during the day that's my main concern today." This ensures your priority is heard even if time runs short, and it shapes the agenda of the appointment from the outset rather than leaving your biggest issue as an afterthought at the end.
Ask for a Written or Documented Summary of Any Changes
Especially for pressure adjustments or new clinical findings
If any changes are made to your prescribed settings during the appointment, ask for these to be documented in a letter or clinic note that you can access, and confirm the new settings before you leave. CPAP pressure changes in particular are changes to your clinical prescription you should know precisely what has changed, why, and to what value. If changes are communicated verbally only and you are not confident you will remember them accurately, write them down in the appointment or ask the clinician to write them for you.
If You Leave With Unresolved Questions, Follow Up
A telephone call or PALS enquiry can bridge gaps between appointments
If the appointment ends and you have a significant unresolved concern a question that was not reached, a change that was promised but not confirmed, or a referral that did not materialise do not simply wait until the next scheduled appointment. Most NHS sleep services have a telephone line or email address for non-urgent patient queries. The Patient Advice and Liaison Service (PALS) at your trust is also available if you need help resolving a concern about your care more formally.
Prioritise your question list before the appointment into three tiers: must ask today (state in the first 60 seconds), ask if time allows, and can follow up via telephone or at the next review. This prevents the most important questions from being squeezed out by time pressure.
Using Your Equipment Supplier Alongside Your Sleep Clinic
Your NHS sleep clinic and your CPAP equipment supplier serve different but complementary roles. Understanding the distinction helps you route questions to the right place which often means faster resolutions for the many issues that fall clearly within the supplier's remit.
Sleep Clinic vs Equipment Supplier: Who to Contact for What
🏥️ Your NHS Sleep Clinic
Clinical Decisions
Prescribed pressure changes · Diagnosis review or new diagnostic study · New or worsening symptoms · Treatment-emergent central apnoeas · Device type changes (CPAP to BiPAP) · DVLA notifications and driving guidance · Co-existing respiratory or cardiovascular concerns · Complex adherence problems.
📋 Your equipment supplier is often your fastest route to comfort improvements. Many mask fit, comfort, and equipment issues that CPAP users wait months to raise at their next sleep clinic review can be addressed within days by contacting their equipment supplier directly. If you are experiencing a mask leak, a comfort problem, or a cleaning question, your supplier should be your first call not your next scheduled NHS appointment. Reserving your clinical appointment time for clinical questions maximises the value of both interactions.
Frequently Asked Questions
Can I request a more frequent review if I am struggling with my therapy?
Yes. Most NHS sleep services can accommodate requests for additional or earlier review appointments when there is a specific clinical reason persistent poor control, significant new symptoms, or a major equipment change that needs clinical review. Contact the sleep clinic directly and explain clearly why you need an earlier appointment rather than waiting. If you are struggling significantly with adherence or comfort and your next scheduled review is several months away, this is worth requesting rather than waiting. For equipment and comfort issues, your supplier can often help in the interim without requiring a clinical appointment.
My sleep clinic seems to only look at my average AHI are there other metrics I should ask them to look at?
Yes, and it is entirely reasonable to ask. Beyond the headline AHI average, useful things to discuss include: the 90th or 95th percentile pressure (if you use AutoCPAP, to confirm your device is not regularly maxing out its range); the leak rate pattern and whether it is consistently within target; the proportion of nights with elevated AHI versus well-controlled nights; and whether the data shows any evidence of treatment-emergent central apnoeas. Your clinician may not routinely discuss all of these unless prompted asking specifically gives you a fuller picture of what the data actually shows.
I feel like I am not being taken seriously at my appointments — what can I do?
Start by being as specific and concrete as possible when describing your concerns a specific symptom, a specific data reading, a specific night rather than a general sense that things are not right. This tends to get a more focused clinical response than broader expressions of dissatisfaction. If you consistently feel your concerns are not being adequately addressed, ask to see a different clinician at the service or to have your care reviewed by a consultant if you have been seen primarily by a nurse practitioner. If you remain unhappy, you can contact the PALS (Patient Advice and Liaison Service) at your trust, who can help you navigate your options without needing to make a formal complaint. You can also ask your GP to advocate on your behalf or consider a private second opinion if NHS avenues feel exhausted.
Disclaimer: This article is intended for general informational and educational purposes only. It does not constitute medical advice. CPAP settings, including prescribed pressure, should only be adjusted on the guidance of a qualified clinician. If you have concerns about your therapy, your symptoms, or your clinical care, contact your sleep clinic, respiratory specialist, GP, or CPAP equipment supplier as appropriate.
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