respiratory
Maximum Voluntary Ventilation (MVV) / Breathing Reserve
Estimates maximum voluntary ventilation and breathing reserve index from FEV1. Used in pre-operative respiratory assessment.
Score interpretation
Breathing Reserve ≤ 15 % — Ventilatory Limitation -100–15
Breathing reserve of 15 % or less at peak exercise suggests a ventilatory limit to exercise.
→ Interpret with the full CPET (gas exchange, cardiac response).
Breathing Reserve > 15 % 15.01–100
Breathing reserve above 15 % at peak exercise (normal VEpeak/MVV about 72 ± 15 %).
→ No ventilatory limitation on this measure.
Interpretation bands for the MVV / Breathing Reserve. Apply clinical judgement and local guidance.
References
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Drugs
- Nitric Oxide (Inhaled — iNO) · Selective Pulmonary Vasodilator
- Selexipag · Pulmonary Arterial Hypertension
- Macitentan · Pulmonary Arterial Hypertension
- Iodide with iodine (Lugol's solution) · Antithyroid (preoperative)
- Sildenafil (Paediatric — PPHN / PAH) · PDE5 Inhibitor (Paediatric Pulmonary Hypertension)
- Sildenafil · PDE5 Inhibitor — Pulmonary Arterial Hypertension
Pathways
- Acute Asthma in Adults · BTS/SIGN British Guideline on Asthma 2019; NICE NG80
- Pulmonary Embolism Assessment · NICE NG158; ESC 2019 PE Guidelines
- Acute Exacerbation of COPD (AECOPD) · NICE NG115; GOLD 2024
- Spontaneous Pneumothorax (Adult) · BTS Pleural Disease 2023
- Atypical Pneumonia (Legionella / Mycoplasma / Chlamydophila) · BTS 2023; IDSA
- COPD Exacerbation Management · NICE NG115 / GOLD 2024
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.
