Application-based Medical Gas Flowmeter segmentation structures demand along five critical care areas. Oxygen therapy dominates with over 45 % share, driven by chronic COPD and post-Covid long-term oxygen programmes that require precise 0–15 lpm wall-mounted devices. Anaesthesia monitoring is the second-largest slice (≈22 %), where accuracy drift directly affects patient hypnosis depth, pushing hospitals to renew turbine-style meters every 5–6 years. Aerosol & respiratory drug delivery (≈15 %) is expanding fastest in paediatric and geriatric home-care, fuelling demand for ultra-low-flow, battery-powered variants. Emergency & resuscitation (≈12 %) demands rapid-connect, shock-resistant units with >160 lpm peak capacity, while MRI suites (≈6 %) need aluminium-free, non-ferromagnetic flowmeters, commanding price premiums above 35 %. Collectively, these end-uses shape procurement cycles, reimbursement codes and regional tender specifications, anchoring the overall Medical Gas Flowmeter market taxonomy.