Consumables 9 January - December 2021
Anaesthetic
In normal respiration 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 fully
saturated, containing 44mg H2O per litre.
The drying and cooling effect is exacerbated by the
presence of the tracheal tube, the normal process of
re-absorption of heat and moisture by the upper airway
during expiration is lost. To combat this during long
surgery times the use of a passive humidification (hydrotherm)
requires a heat and moisture exchanger to be
positioned at the patient connection of a basic two limb
breathing system.
As prolonged exposure to dry ventilatory gases
can lead to the following problems
X Localised inflammation of the trachea
X A reduction in ciliary function
X Retention and thickening of secretions
X Lowering of patient temperature
X Reduction in Cardiopulmonary function
X Increased risk of tracheostomy tube occlusion
Hydro-Therm 1855000
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.
Moisture return: 30mg H2O/l
Resistance at 30L/min: 0.5 cm H2O
Resistance at 60L/min: 1.6 cm H2O
Compressible volume: 21ml
Weight: 11.8g
Connectors: 15M-22M/15F plus luer port
Minimum tidal volume: 50ml
Hydro-Therm
Why do we need to us a Hydro-Therm?
Made of 3-4mm spheres produced
to minimise potential dusting and
caustic effect on lungs and trachea.
Its uniform shape allows consistent
packing, resulting in a more even flow
of anaesthetic gas - for Improved
Anaesthetic Delivery. Colour change
white to purple. 5kg.
X Reduces caustic effect
X Reduces channeling
Spherasorb (Soda Lime)
Spherasorb (Soda Lime)
Code Description Price
SPH001 Spherasorb 5kg £23.95
Did you know about Channelling?
If the soda lime in your canister is not evenly
spaced - then the gas will flow through the
passage of least resistance. This can mean that
even though you see no colour change with
your soda lime - it may have changed colours
internally through the preferred channels and
therefore could be ineffectual. With Spherasorb
the soda lime it is manufactured into uniform
spheres meaning that there is no clumping of
smaller and larger granules - to ensure that air
flow is even Spherasorb can help to eliminate
the issues of channelling.
Hydro-Therm
Code Description Price
HYD1560 Luer Lock Port 1560000 *1
(Large Dogs >10kg)
£2.75
HYD1855 HME + Luer Lock Port 1855000
*1 (Small Dogs <10kg)
£1.80
HYD1441 Hyrdo-Therm HMEF + Micro
Luer Lock Port*1 (>3.5Kg)
£4.99
NEW
NEW
Hydro-Therm HYD1441
The smallest in the range and as such would have
a recommended minimum tidal volume of >35ml.
This would equate to approx body weight of >3.5kg
based upon 10ml/Kg Tidal volume calculation.
Moisture loss: 12.3 mg H2O/l
Calculated moisture return: 26.8 mg H2O/l
Resistance at 11L/min: 1.0 cm H2O
Resistance at 15L/min: 1.4 cm H2O
Compressible volume: 11 ml
Weight: 11 g
Connectors: 15M-15F
Minimum tidal volume: >35 ml
Hydro-Therm 1560000
Moisture return: 31.6mg H20/l
Resistance at 30L/min: 0.2 cm H20
Resistance at 60L/min: 0.8 cm H20
Compressible volume: 59ml
Weight: 31g
Connectors: 22F/15M-22M/15F
Minimum tidal volume: 200ml