A dedicated range of heat and moisture exchangers designed to replicate the functions of the body’s upper airway by conserving expired heat and moisture and returning these to the patient during inhalation.

In normal respiration the anatomy of the upper airway helps to warm and humidify inspired air, and to retain the warmth and moisture contained in expired air. During inspiration, even cold or dry air is typically heated to 37°C and when fully saturated, contains 44mg H2O/L. In normal respiration, the anatomy of the upper airway helps to warm and humidify inspired gas, and to retain the warmth and moisture contained in expired air. When you inhale, even cold or dry gas is heated to body temperature and by the time it reaches your lungs, it contains the correct amount of moisture. In mechanical ventilation or anaesthesia, the patient’s upper airway may be bypassed by the introduction of a tracheal tube. As a result the patient’s lungs may be confronted with cold, dry inspired gas (Intersurgical.com).

Prolonged exposure to dry ventilatory gases can lead to:

• Localised inflammation of the trachea
• A reduction in ciliary funtion
• Retention and thickening of secretions
• Lowering of patient temperature
• Reducation in cardiopulmonary functiond
• Increased risk of tracheostomey tube occlusion
• Extended durartion and cost of care

104-300 with luer lock port & 104-301 without luer lock

• Moisture loss 7.8mg H20/l
• Calculated moisture return 30.8mg H20/l
• Resistance at 30l/min 0.5cm H20
• Resistance at 60l/min 1.6cm H20
• Compressible volume 20ml
• Weight 11.8g
• Connectors 15M-22M/15F plus luer port (104-300 only)
• Minimum tidal volume >60ml

104-305 Hydro-therm 3 HME with luer lock port

• Moisture loss 6.7mg H20/l
• Calculated moisture return 31.6mg H20/l
• Resistance at 30l/min 0.2cm H20
• Resistance 60l/min 0.8cm H20
• Compressible volume 59ml
• Weight 31g
• Connectors 5M-22m/22F Plus luer lock port
• Minimum tidal volume >200ml