alveolar ventilation
the amount of air that reaches the alveoli
bag-valve mask
a handheld device with a face mask and self-refilling bag that can be squeezed to provide artificial ventilations to a patient. it can deliver air from the atmosphere or oxygen from a supplemental oxygen supply
cellular respiration
the exchange of oxygen and carbon dioxide between cells and circulating blood
cyanosis
a blue or grey color resulting from the lack of oxygen in the body
diffusion
a process by which molecules move from an area of high concentration to an area of low concentration
flowmeter
a valve that indicates the flow of oxygen in liters per minute
flow-restricted, oxygen-powered ventilation device
a device that uses oxygen under pressure to developer artificial ventilation. its a trigger is placed so the rescuer can operate it while still using both hands to maintain a seal on the face. it has a automatic flow restriction to prevent over delivery o
humidifier
a device connected to the flowmeter to add mositure to the dry oxyfen coming from an oxygen cylinder
hypoxia
an insufficiency of oxygen in the body's tissue
nasal cannula
a device that delivers low concentrations of oxygen through the two prongs that test in the patient's nostrils
nonrebreather mask
a facemask and reservoir bag device that delivers high concentrations of oxygen, The patient's exhaled air escapes through a valve and is not rebreathed.
oxygen cylinder
a cylinder filed with oxygen under pressure
partial nonrebreather mask
a face mask and a reservoir oxygen bag with no one-way valve to the reservoir bag so some exhaled air mizes with the oxygen; not commonly used in the EMS pre-hospital setting
pocket mask
a device, usually with a one-way valve, to aid in artificial ventilation. a rescuer breathes through the valve when the mask is placed over the patient's face. it also acts as a barrier to prevent contact with a patient's breath or body fluid. it can be u
positive pressure ventilation
see artificial ventilation
pressure regulator
a device connected to an oxygen cylinder to reduce cylinder pressure so it is safe for delivery of oxygen to a patient
pulmonary respiration
the exchange of oxygen and carbon dioxide between the alveoli and circulation blood in the pulmonary capillaries
respiration
the diffusion of oxygen and carbon dioxide between the alveoli and the blood and between the blood and the cells. also used to mean, simply, breathing
respiratory arrest
when breathing completely stops
respiratory distress
increased work of breathing; a sensation of shortness of breath
respiratory failure
the reduction of breathing to the point where oxygen intake is not sufficient to support life
stoma
a permanent surgical opening in the neck through which the patient breathes
tracheostomy mask
a device designed to be placed over a stoma or tracheotomy tube to provide supplemental oxygen
ventilation
breathing in and out or artificial provisions of breaths
venturi mask
a face mask and reservoir bag device that deliver specific concentrations of oxygen by oxygen with inhaled air.