High flow nasal cannula

The High Flow Nasal Cannula (HFNC) system has become a vital respiratory therapy tool in hospitals and home care settings across Pakistan. Unlike standard oxygen therapy, an HFNC machine delivers heated and humidified oxygen at high flow rates, significantly reducing the patient’s work of breathing.

The high flow nasal cannula machine is an advanced respiratory support system widely utilized for treating severe lung conditions, including COPD, pneumonia, and acute respiratory distress. By blending air and oxygen through a specialized heated humidifier, the system prevents airway dryness, matches patient inspiratory demands, and washes out anatomical dead space.

Key Technical Parameters & Features:

• High Flow Nasal Cannula Flow Rate: Standard devices can deliver gas flows ranging from 20 L/min up to 60 L/min (or higher in specialized units), creating a mild positive end-expiratory pressure (PEEP) effect.

• Precise High Flow Nasal Cannula Settings: Clinicians can customize therapy parameters independently. Adjustments include the total flow rate, gas temperature (usually set between 31°C and 37°C), and exact high flow nasal cannula FiO2 percentages.

• Fraction of Inspired Oxygen ($FiO_2$ Control): The machine features an integrated oxygen blender capable of delivering precise concentrations from 21% (room air) up to 100% pure medical oxygen. Referencing a clinical high flow nasal cannula FiO2 chart allows practitioners to titrate oxygen saturation levels accurately based on blood gas values.

• Optimized Patient Comfort: Available in various high flow nasal cannula sizes (Infant, Pediatric, Adult Small, Medium, Large), the soft-prong interface reduces facial pressure sores, allowing patients to comfortably eat, speak, and sleep during active therapy.

Technical Breakdown: Standard Nasal Cannula vs. HFNC

Technical Metric	Standard Nasal Cannula	Heated High Flow Nasal Cannula (HFNC)
Max Flow Rate	1 to 6 L/min	20 to 60+ L/min
Oxygen Delivery ($FiO_2$)	24% – 44% (Estimated/Variable)	21% – 100% (Precise & Fixed)
Humidification	None or Bubble Humidifier (Cold)	Heated & Humidified (Active)
Clinical Purpose	Mild Hypoxia / Low Oxygen Demand	Severe Respiratory Distress / High Demand

High Flow Nasal Cannula Price in Pakistan (2026 Estimates)

• HFNC Machine Purchase Price: Rs. 280,000 – Rs. 450,000 (depending on brand, such as Fisher & Paykel Airvo 2, BMC H-80, or Yuwell).

• HFNC Monthly Rental Price: Rs. 35,000 – Rs. 55,000 per month (available through local equipment management services).

• Consumables (Cannula Interface & Tubing Circuit): Rs. 12,000 – Rs. 18,000.

Frequently Asked Questions (FAQs)

1. How does a high flow nasal cannula machine work?

The machine draws in medical gases and passes them through an internal heating and humidification chamber. It then pushes the warm, moist oxygen stream through a specialized wide-bore nasal cannula at high flow rates, satisfying the patient’s breathing drive while providing a constant wash of oxygen.

2. Can an HFNC machine be safely set up at home in Pakistan?

Yes, but it requires professional medical supervision. An adult protocol requires monitoring patient vitals, oxygen saturation ($SpO_2$), and regular tracking via a high flow nasal cannula FiO2 chart to safely titrate settings under a pulmonologist’s guidance.

3. What is the difference between an Oxymizer and HFNC?

An Oxymizer is a specialized nasal cannula that stores oxygen in a small reservoir, allowing a higher concentration up to 15 L/min without a power source. An HFNC is a motorized machine that heats, humidifies, and delivers up to 60 L/min of air-oxygen mixtures, providing active respiratory support rather than just passive oxygen collection.

4. How do I select the right high flow nasal cannula size?

The size is determined by measuring the patient’s nasal septum width. The prongs should comfortably fit inside the nostrils without stretching the nasal skin or sealing the nostrils completely, leaving a gap for exhalation.