An oxygen cylinder should be taken out of service and refilled when the pressure inside it is less than..
You are dispatched to a residence where a middle aged man was found unconscious in his front yard. There are no witnesses who can tell you what happened. You find him in a prone position, his eyes are closed and he is not moving. Your first action should be...
to log roll him as a unit to a supine position
This patient would likely require insertion of an oropharyngeal airway
a 40 year old unconscious patient with slow, shallow respirations
You are ventilating an apneic woman with a bag mask and notice loose dentures..what do you do?
remove her dentures, resume ventilations and assess for adequate chest rise
You are performing mouth to mask ventilations with oxygen connected and set at a flow rate of 15 L/min. What percentage of oxygen is your patient receiving?
This is a correct statement regarding oxygenation and ventilation..
In mines or confined places, where oxygen levels are low, ventilation may continue despite adequate oxygenation
The pressure of gas in a full cylinder is..
On which of the following patients would it be appropriate to use the flow restricted, oxygen powered ventilation device?
a 21 year old male with traumatic cardiac arrest
This statement about breathing adequacy is correct..
Patients breathing shallowly may require assisted ventilation despite a normal respiratory rate
Irregular respirations characterized by an increasing rate and depth of breathing followed by periods of apnea are called..
The hypoxic drive--the primary stimulus to breathe for patients with certain chronic respiratory diseases--is influenced by..
low blood oxygen levels
Which organ can survive longest without oxygen
In contrast to inhalation, exhalation..
is a passive process caused by the increased intrathoracic pressure
Which factor will cause a decreased minute volume in an adult..
Structures of the lower airway include all of the following..
A patient who is suspected of being hypoxic and is breathing adequately should be given supplemental oxygen with a ..
Central chemoreceptors located in the medulla provide feedback to increase the rate and depth of breathing when they sense..
slight elevations in carbon dioxide or a decreases in the pH of the cerebrospinal fluid
A 71 year old male is semiconscious following a sudden, severe headache. There is vomitus on his face and his respirations are slow and shallow. The EMT must immediately..
perform oropharyngeal suctioning
How does positive pressure ventilation affect cardiac output?
It increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output
inadequate oxygen to the tissues and cells
These can help minimize the risk of gastric distention when ventilating an apneic patient with a bag mask device..
increasing the amount of delivered tidal volume
This statement is true about positive pressure ventilation..
more volume is required to have the same effects as normal breathing
If ventilation is impaired, carbon dioxide levels in the bloodstream will increase. This condition is called..
The partial pressure of oxygen in the alveoli is this while the carbon dioxide is this..
104 mm Hg, 40 mm Hg
How does positive pressure ventilation affect cardiac output..
it increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output
This structure is contained within the mediastinum..
An adult at rest should have a respiratory rate that ranges between..
12 and 20 breaths/min
Gas exchange in the lungs is facilitated by..
adequate amounts of surfactant