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spa·cer

(spā'sĕr),
A device attached to a metered-dose inhaler that aids delivery of inhaled medications.

spacer

[spās′ər]
Etymology: L, spatium, space
on a metered dose inhaler, a chamber between the inhaler canister and the patient's mouth where droplets of medication can slow down and evaporate so that there is less direct impact on the oropharynx, with more medication delivered to the lower respiratory tract instead of being lost in the mouth. This is especially helpful for children. See also metered dose inhaler.
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Metered dose inhaler with spacer

spa·cer

(spās'ĕr)
An extension device for a metered-dose inhaler; it is designed to eliminate the need for hand-breath coordination and to reduce the deposition of large aerosol particles in the upper airway.

spacer

(spā′sĕr)
A specially shaped container that improves the delivery of inhaled aerosols, such as beta2 agonists, steroids, and other antiasthmatic drugs, to the bronchi and lungs. Spacers form a channel between metered dose inhalers and the mouth through which medicated mists can be inhaled. They improve the performance of antiasthmatic drugs because without them, a large quantity of inhaled medications end up in the mouth, on the palate, on the buccal mucosa, or on the tongue and fail to reach their intended target in the lower airways.

Patient care

Spacers improve the delivery of inhaled drugs to any patient who cannot coordinate the use of metered dose inhalers, and in all patients who used inhaled steroids. They are also recommended for young children, e.g. under the age of 6.

References in periodicals archive ?
Data collection was made through observation, and a monitoring record was completed on a daily basis regarding the patient and the procedure made (age, sex, and inpatient care sector, indication for and total period of drainage, positioning of the drain in the x-ray, kinking, fixation with skin suture and with an omental tag of tape, obstruction and presence of a mechanism of obstruction of the drain, adjustment of the extension tube, outer diameter and length, positioning of the collection bottle and permeability of the air vent, adjustment of the system connections, complications related to the drainage).
From what is given above, it appears that if we attach the 25mm extension tube to a 105mm macro lens, the effective magnification at closest focus will be 1.
The stop cock was then turned so that the syringe communicates with both extension tubes.
With the extension tube unscrewed and removed, six holes in the hexagonal base flange were then drilled (8mm diameter) and corresponding holes were drilled and tapped (see Figure 7) on the old baseplate.
These actuators feature rugged construction with powder coated aluminum housing, steel protection tube, stainless steel extension tube, and powder metal gears.
All equipment was connected to the patient by the intravenous route through an extension tube fitted with a nonreturn valve.
A hexagonal drive lug (male) is connected to the top of the extension tube, which in turn is driven by the coupling (female) on the power unit.
The outer posts, with tempered aluminum floor socket stem and inner extension tube, are coupled with a lifetime warranty 26:1 machined worm gear net tensioning winch and knotless mesh net with Kevlar top rope net to maximize net tension performance.
The team decided that it would be more advantageous to lower the inversion unit into the pit with a backhoe rather than trying to maneuver the 10-foot extension tube inside the pit.
Available as a compact, extension tube or cable version, Soliphant M provides reliable level measurement from 145mm to 20m in solids applications from cement, mortar and dye powders to powdered milk, sugar and animal feed.
At the camera end, an extension tube modified with a photo ocular is used and connected to my Nikon Coolpix 4500 digital camera.