Informe

Anesthesia Units
Anesthesia
Basically, anesthesia units perform the following
Basically,
functions:
functions:

Anesthesia units dispense a mixture of gases and
vapor and vary the proportionsto control a
patient’s level of consciousness and/or analgesia
during surgical procedures.

Provide oxygen to the patient
Blend gas mixtures that can include, beside
oxygen, an anestheticvapor, nitrous oxide
(N2O), other medical gases, and air.

The most common type of anaesthetic machine in use in the
developed world is the continuous-flow anaesthetic machine,
continuous flowanaesthetic
which is designed to provide an accurate and continuous supply
of medical gases (such as oxygen and nitrous oxide), mixed with
an accurate concentration of anaesthetic vapour (such asisoflurane), and deliver this to the patient at a safe pressure and
flow.

Facilitation ventilation with these gas mixture,
regardless of whether ventilation is
spontaneous, controlled, or assistedReduce, if not eliminate, anesthesia related
risk to the patient and clinical staff.

Modern machines incorporate a ventilator, suction unit, and
patient - monitoring devices.
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2

The patientis anesthetized by inspiring a mixture of oxygen,
the vapor of a volatile liquid halogenated hydrocarbon
anesthetic, and, if necessary, N2O and other gases.
Because normal breathing is depressed bythe anesthetic
agent agents and by muscle relaxants administered in
conjunction with them, respiratory assistance – either with an
automatic ventilator or by manual compression of the reservoirbag – usually necessary to deliver breathing gas to the patient.

Because the APL valve in the breathing system is either closed or
isolated during ventilator operation, i.e., mechanicalventilation,
each ventilator must contain a spill valve for venting excess gases
into the scavenging system. During the expiratory phase of the
mechanical ventilation cycle the spill valve vents excess gas;...