management of a patient with an obstructed or Compromised Airway Flashcards
_______ is the first step in assessing a patient
Airway management
What takes takes priority over management of all other conditions
Prevention of hypoxemia
True/False
Supplemental oxygen must be administered to all trauma patients
True
Lower Airway consists of
Trachea, its branches, and the lungs.
Upper Airway consists of
(a)Nasal cavity
(b)Pharynx (nasopharynx, oropharynx, and hypopharynx)
(c)Larynx
Neural control - Primary control centers come from the…
Medulla and Pons
What is the Primary involuntary respiratory center
Medulla
_______ pH is the primary control of respiratory center stimulation
Cerebrospinal (CSF)
Hypoxic Drive
_______ instead of carbon dioxide receptors to regulate the respiratory cycle.
Chemoreceptors
The ______ is a late homeostatic system designed to increas erespiration rate and depth (tidal volume) when the body’s arterial oxygen levels (SaO2) decreases significantly
hypoxic drive
Definition of what?
Is when there is no oxygen available at all
Anoxia
What is this
SaO2
Arterial oxygen saturation
What is this
PaO2
Arterial oxygen tension
_______ is the fraction or percentage of oxygen in the space being measured
Fraction of inspired oxygen (FiO2)
Definition of what?
Literally means “deficient in oxygen”, that is an abnormally low oxygen availability to the body or an individual tissue or organ.
Hypoxia
Definition of what?
Insufficient oxygenation; that is decreased partial pressure of oxygen in blood
Hypoxemia
Normal pulse oximeter readings range from _______ percent, under most circumstances.
95 to 100
A pulse Ox saturation of less than ___% is a clinical emergency.
90
Indications for Oxygen Therapy
(1) Cardiac and respiratory arrest
(2) Hypoxemia (pO2 < 58.5 mmHg, Sat < 90%)
(3) Hypotension (Systolic BP < 100 mmHg)
(4) Low Cardiac Output and Metabolic Acidosis (serum bicarbonate < 19 mmol/l)
(5) Respiratory distress (RR > 24/min)
When is O2 therapy contraindicated
No absolute contraindications of oxygen therapy exist when indications are judgedto be present
What airway delivery device?
Air is administered to the patient when the emergency responder exhales through a one-way filter valve
Pocket Mask
What airway delivery device?
Two prongs inserted just inside anterior nares and supported on alight frame.
(a)Oxygen is supplied at rates of 1-4 liters/min resulting in inspired concentration of approximately 25-30%
Nasal Cannula
What airway delivery device?
A handheld device used to provide positive pressure ventilation to a patient who is not breathing or who is breathing inadequately.
Bag-Valve Mask
What airway delivery device?
-Has valves prevent room air from entering the mask but allow exhaled air to leave the mask.
-It has a reservoir bag like a partial rebreather mask but the reservoir bag has aone-way valve that prevents exhaled air from entering the reservoir.
Non-Rebreather Mask