1
What concentration of inspired oxygen is provided by a nasal cannula when the flowmeter is set at 1 to 6L per minute?
24%-44%
The brain stem normally triggers breathing by increasing respirations when?
Oxygen levels increse
The proper technique for sizing an oropharyngeal airway before insertion is to measure the device from what to what?
The earlobe or angle of the jaw to the corner of the mouth
What is the most common airway obstruction in the unconscious patient?
The tounge
What is diffusion?
The process in which molecules move from a high concentration to a lower concentration
What is the space between the lungs is called what?
The mediastinum
What type of pressure is regular inhalation?
negative pressure
What is a thrombus?
A blood clot
What are cheyne stokes respirations?
Increase and decresed in depth and a period of apnea
What does ROSC stand for?
Return of spontaneous circulation
What can suctioning cause?
Hypoxia
When do you take an oxygen tan out of service?
When is is below or at 500PSI
The pressure of the gas in a full oxygen cylinder is approximently?
2,000 PSI
What is low flow O2, Medium flow O2, and High flow O2?
Low= 2-6L
Medium= 6-10L
High= 10-12L
When does gastric distention mostly occur?
When you ventilate the patient too forcefully or rapidly
what is residual volume?
The air that remains in the lungs after expiration
What is minute volume?
Volume of air moved through the lungs in one minute
What is aerobic metabolism?
In the presence of oxygen cells that convert glucose into energy
What does FIO2 mean?
Fraction of inspired oxygen-> how much oxygen is being breathed in
What is wheezing?
Production of whistling during respirations
The venturi mask (which we rarely use) is what type of flow low, medium, or high?
Medium flow
When should a bag mask (BVM) be used?
When you as a provider need to deliver high concentrations of oxygen to patients who aren't ventilating adequately
What is stridor?
High pitch noise heard primarly on inspiration
What is preoxygenation?
Getting SPO2 stats over 100SPO2 before inserting and oropharyngeal airway
What does positive pressure ventilations do to blood pressure?
Causes blood pressure to drop