The Inhalation Sedation (Nitrous Oxide) Notes Template

An inhalation sedation record should show the titration, the monitoring and the recovery — including the oxygen given at the end of sedation, which is good practice even though neither IACSD nor SDCEP sets a minimum time. Below is a template for UK clinicians to paste into their PMS for every RA sedation case.

Why this inhalation sedation (RA / N2O) template wins

• 100% O2 at the end of sedation documented — good practice against diffusion hypoxia, with the duration recorded.
• N2O titration with timestamps and patient response — clinical decision-making record.
• Cautions specifically asked (COPD, trapped air / ENT surgery, B12, pregnancy) — defensible MHx.
• Scavenging system documented — Health and Safety compliance.
• Discharge criteria for RA simpler than IV (rapid recovery) but still documented.

The template (paste into your PMS notes field)

Paste the inhalation sedation (RA / N2O) template below into your PMS notes field. Patient demographics are left out because your PMS already holds them.

SEDATION TYPE: Inhalation (relative analgesia — nitrous oxide / oxygen)
INDICATION: [Dental anxiety / paediatric / specific procedure / patient request]

PRE-SEDATION CHECKS:
- MHx reviewed: [Cautions checked — COPD / recent middle-ear, sinus or other ENT surgery / pneumothorax or other trapped air / B12 deficiency / 1st trimester pregnancy]
- ASA grade: [I / II]
- Patient cooperation assessed: [Can keep nasal mask in place / can mouth-breathe through procedure / paediatric appropriate]
- Written consent: [Reviewed / signed]
- Escort: [Note: IACSD allows discretion for adult RA — no escort may be acceptable if no other contraindication / required for paediatric]

BASELINE: SpO2 __%

NITROUS OXIDE TITRATION:
- Starting % N2O: 0% (100% O2)
- Increments: typically 10% steps every 1-2 minutes until clinical sedation achieved
- Time __:__   N2O __%   SpO2 __   Patient response: [responsive / drowsy / disinterested / refused]
- Time __:__   N2O __%   SpO2 __   Patient response:
- Time __:__   N2O __%   SpO2 __   Patient response:
- Maintenance N2O %: [typically 25-50% for adults; lower for paediatric]

DENTAL TREATMENT: [Procedure performed — cross-reference clinical note]

100% OXYGEN AT END OF SEDATION (good practice to limit diffusion hypoxia — no IACSD/SDCEP minimum duration):
- Time started: __:__
- N2O reduced to 0%, O2 at 100%
- Duration of 100% O2: __ minutes
- Time ended: __:__
- SpO2 throughout recovery: __%

DISCHARGE ASSESSMENT:
- Patient fully recovered (alert, oriented, ambulatory): Y
- SpO2 stable: __%
- HR stable: __
- Verbal post-op instructions given: Y
- Written post-op instructions given: Y
- 24h emergency contact provided: Y
- Time of discharge: __:__

SCAVENGING SYSTEM:
- In use throughout procedure: Y (Health and Safety at Work Act compliance)
- System type: [Active / passive]
- Functioning verified at start: Y

POST-PROCEDURE:
- No driving / operating machinery for 30 minutes (RA recovery is rapid but caution advised)
- Return to normal activities permissible

Try the inhalation sedation (RA / N2O) note in the live demo → No account needed.

What good looks like — a worked example

The same inhalation sedation (RA / N2O) template, completed for a realistic case.

SEDATION TYPE: Inhalation — N2O/O2 (relative analgesia)
INDICATION: Paediatric dental anxiety (age 7) for restoration of carious primary molars

PRE-SEDATION CHECKS:
- MHx reviewed (with parent): NO COPD, NO ENT surgery, NO B12 deficiency, NO pregnancy (paediatric). Otherwise fit and well, up to date with immunisations.
- ASA grade: I
- Patient cooperation: Mother reports child can keep mask in place when practising at home. Good rapport at consultation. Assessed: ready to proceed.
- Written consent: Mother signed at previous visit. Re-confirmed today.
- Escort: Mother present throughout.

BASELINE: SpO2 99%, HR 88 (paediatric normal)

NITROUS OXIDE TITRATION:
- Starting: 0% N2O (100% O2)
- 09:30   N2O 20%   SpO2 99%   Patient: comfortable, slight smile, eyes still wide open
- 09:32   N2O 30%   SpO2 99%   Patient: increasingly relaxed, watching ceiling
- 09:34   N2O 40%   SpO2 99%   Patient: drowsy but cooperative, responding to "open wider"
- Maintenance N2O: 40% (paediatric appropriate level)

DENTAL TREATMENT: ULD Hall crown placement (cross-reference Hall crown note). Procedure proceeded smoothly. Patient cooperative throughout.

100% OXYGEN RECOVERY:
- Time started: 09:48 (procedure ended)
- N2O reduced to 0%, O2 100%
- Duration of pure O2: 3 minutes confirmed (09:48 - 09:51)
- Time ended: 09:51
- SpO2: 99% throughout

DISCHARGE ASSESSMENT (09:55):
- Patient fully recovered: alert, sitting up, talking, asking about going home
- SpO2: 99%
- HR: 86
- Verbal post-op instructions given to mother + child
- Written post-op information given (Hall crown aftercare + sedation post-op)
- 24h emergency contact provided
- Time of discharge: 10:00 (5 minutes monitoring after pure O2 + reassurance)

SCAVENGING SYSTEM:
- In use throughout: Yes (Health and Safety at Work — N2O scavenging mandatory)
- System type: Active (Porter A6000 scavenging system)
- Functioning verified at start: Yes (flow indicator confirmed)

POST-PROCEDURE:
- Child to be supervised by mother today, return to normal activities including school tomorrow.
- Mother understands post-sedation observation requirements (alertness, normal hydration, no nausea).

Compliance: the medico-legal angle

• IACSD Standards V1.1 (2020) — N2O sedation framework.
• SDCEP Conscious Sedation in Dentistry (3rd ed, June 2017; reviewed and unchanged December 2022) — dental hygienists and therapists may be trained to act as operator-sedationists for inhalation sedation (section 2.2).
• Health and Safety at Work Act + COSHH — N2O scavenging legal requirement (protecting staff from ambient N2O exposure).
• GDC Principle 4 — sedation records.

Common documentation mistakes

• End-of-sedation oxygen not recorded — it is good practice, and the note is your only evidence it was given.
• N2O titration not recorded with steps — leaves the dosing decision undocumented.
• Cautions not specifically asked — particularly trapped air (recent middle-ear or sinus surgery, pneumothorax) and B12 deficiency.
• No scavenging documentation — Health and Safety breach.
• Discharging child without parental understanding of post-sedation observation needs.

Sources

• GDC Standards for the Dental Team, Principle 4: Maintain and protect patients’ information (accessed 18 October 2026)
• SDCEP: Conscious Sedation in Dentistry (3rd edition, June 2017; reviewed and unchanged December 2022) (accessed 18 October 2026)
• IACSD: Standards for Conscious Sedation in the Provision of Dental Care (2015, updated March 2020) (accessed 18 October 2026)

Frequently asked questions

Patient leaflets for this treatment

• After Your Dental Sedation
• Your Guide to Dental Sedation

Related dental note templates

Browse the full set of free dental notes templates.