emt chapter 10
regarding oxygen is correct
oxygen supports the combustion process and may cause a fire
good mask-to-face seal and oxygen flow rate of 15 L/min, the nonrebreathing mask is capable of delivering up to
90
w/o adequate oxygen, body cells
incompletely convert glucose into energy, and lactic acid accumulates in the blood
diaphragm is innervated by ___ nerve
phrenic
which of the following statements regarding pos pressure ventilation is correct
with pos-pressure ventilation, more volume is required to have the same effects as normal breathing
partial pressure of oxygen in alveoli is ____ mm Hg, while partial pressure of co2 is alveoli is ___
104, 40
23 severe head trauma after motorcycle collided with oncoming truck. unconscious, rapid and shallow breathing, and copious bloody secretions in mouth
alternate 15 secs of oral suctioning w 2 mins of assisted ventilation
you and partner are caring for a critically injured pt. partner is controlling bleeding from pt lower extremities as you attempt ventilations with bag-valve-mask. after repositioning mask several times, unable to effectively ventilate pt. you should
begin ventilation using mouth-to-mask
which oxygen flowmeters is not affected by gravity and can be used in any position
bourdon-gauge flowmeter
inhalation occurs when
diaphragm and intercostal muscles contract and cause a decrease in intrathoracic pressure
contained within mediastinum
esophagus
despite attempts to coach
explain you will assist
how does CPAP improve oxygenation and ventilation in pt with certain respiratory problems
forces alveoli open and pushes oxygen across membrane
hypoxic drive is influenced by
low blood oxygen levels
single emt managing an apneic pt airway, preferred initial method of providing ventilation is
mouth-to-mask technique with one-way valve
Breathing adequacy
pt breathing shallowly may require assisted ventilation despite a normal RR
while providing CPAP to pt in severe respiratory distress, you note that his heart rate has increased by 20 b/mins. he is conscious, but is no longer following verbal commands. you should
remove CPAP and ventilate w bag-valve mask
central chemoreceptors located in the medulla provide feedback to increase the rate and depth of breathing when they sense
slight increase in co2 or decrease in the pH of cerebrospinal fluid
