Overnight Oximetry Interpretation Report

Patient: [Name], [DOB], [MRN]

Study Date/Time: [Start timestamp] – [End timestamp]

Study Setting: [home / inpatient / outpatient lab / SNF / other]

Device: [Manufacturer/Model], [Sensor type and site]

Ordering Clinician: [Name, credentials]

Interpreting Clinician: [Name, credentials]

Study Conditions

Oxygen Status: [room air / supplemental oxygen at specified flow rate and delivery device / unknown—condition during study not provided, interpretation limited]

PAP/NIV Status: [none / on PAP or NIV with mode and settings if known / unknown—condition during study not provided, interpretation limited]

Clinical Indication

[Primary indication for study] (e.g., evaluate nocturnal hypoxemia, assess oxygen adequacy, screen for sleep-disordered breathing, assess residual hypoxemia on PAP, post-acute illness reassessment)

• [Pertinent cardiopulmonary history] (Include only if explicitly provided)
• [Baseline daytime SpO₂ if available]
• [Symptoms prompting testing if provided]

Study Quality & Methods

• Total recording time: [Duration in hh:mm]
• Valid analyzed time: [Duration in hh:mm] (artifact excluded)
• Artifact handling: [Method used if known]
• Overall quality rating: [Adequate / Limited / Poor] — [Brief justification]
• Limitations observed: [motion artifact / poor perfusion / probe displacement / prolonged dropouts / none noted] (Quantify artifact percentage if available)

(If quality is Limited or Poor, state how this impacts confidence in the metrics.)

Findings

Quantitative Summary

Mean SpO₂ (%)	[Value]
Nadir SpO₂ (%)	[Value] (Timestamp: [hh:mm] if available)
Time with SpO₂ < 90%	[Minutes] ([% of valid time])
Time with SpO₂ ≤ 88%	[Minutes] ([% of valid time])
Time with SpO₂ < 85%	[Minutes] ([% of valid time]) (Include only if clinically relevant)
Time with SpO₂ < 80%	[Minutes] ([% of valid time]) (Include only if clinically relevant)
ODI (events/hr)	[Value], definition: [ODI3 / ODI4] (Include only if calculated; must specify definition used)
Pulse rate (bpm)	Mean: [Value]; Range: [min–max] (Include only if available)

Pattern Characterization

[Description of desaturation morphology] (Characterize as: intermittent recurrent desaturations with rapid recovery suggesting obstructive physiology; sustained hypoxemia suggesting parenchymal disease, hypoventilation, or V–Q mismatch; or mixed pattern. Note temporal clustering if present.)

Interpretation

[Clinical interpretation integrating findings with study conditions] (State whether clinically significant nocturnal hypoxemia is present and confidence level given data quality. If on supplemental oxygen, interpret adequacy of current regimen. If pattern suggests sleep-disordered breathing, state level of suspicion. If hypoventilation suspected, note CO₂ assessment is needed. If oxygen or PAP status was unknown, restate limitation.)

Overnight oximetry measures SpO₂ and pulse rate only; it does not measure ventilation, sleep stages, or discrete respiratory events. Oximetry alone cannot diagnose or exclude obstructive sleep apnea—definitive diagnosis requires formal sleep testing (PSG or HSAT).

Impression

• [Study adequacy and any quality limitations]
• [Key hypoxemia metrics: nadir SpO₂ and time at clinically relevant thresholds]
• [Pattern characterization and suspicion for sleep-disordered breathing if applicable]
• [Therapy context: room air vs supplemental oxygen vs PAP/NIV and adequacy]
• [Bottom-line clinical implication]

Recommendations

• [Recommendations tailored to clinical scenario] (Select applicable items below; omit those that do not apply)
• (If significant nocturnal hypoxemia on room air) Recommend clinician evaluation for nocturnal oxygen candidacy per local criteria.
• (If borderline values or limited quality) Consider repeat oximetry with attention to signal quality, confirmatory testing, or evaluation for contributing factors.
• (If on supplemental oxygen with persistent desaturation) Recommend reassessment of oxygen regimen and evaluation for concurrent sleep-disordered breathing or hypoventilation.
• (If pattern suggestive of sleep-disordered breathing) Recommend formal sleep evaluation with PSG or HSAT; oximetry findings are screening only, not diagnostic.
• (If on PAP with residual desaturation) Recommend review of PAP adherence and efficacy data; consider repeat titration, sleep specialist follow-up, or CO₂ assessment if hypoventilation suspected.
• (If severe hypoxemia) Recommend timely clinical contact within [timeframe] by [responsible party].
• [Follow-up plan with timeframe and responsible party]

Interpreting Clinician: [Signature, credentials]

Date/Time Signed: [Timestamp]