BREATHING) | ALL QUESTIONS AND CORRECT
ANSWERS | VERIFIED ANSWERS | BRAND NEW
VERSION!
You are dispatched to a residence for an elderly female who has
possibly suffered a stroke. You find her lying supine in her bed. She is
semiconscious; has vomited; and has slow, irregular breathing. You
should:
A) perform the head tilt-chin lift maneuver and insert an oral airway.
B) insert a nasal airway and begin assisting her breathing.
C) manually open her airway and suction her oropharynx.
D) administer high-flow oxygen and place her on her side. ---------
CORRECT ANSWER-----------------C) manually open her airway and
suction her oropharynx.
This patient's airway is in immediate jeopardy! The first step in caring
for any semiconscious or unconscious patient is to manually open the
airway (eg, head
tilt-chin lift, jaw-thrust) and ensure it is clear of obstructions or
secretions. Because the patient has vomited, she likely has vomitus in
her mouth, which
must be removed with suction before she aspirates it into her lungs.
Mortality increases significantly if aspiration occurs. After opening her
airway and
,removing any vomitus or secretions from her oropharynx with
suction, you should insert an airway adjunct (a nasal airway in th is
case; the patient is
semiconscious and likely has an intact gag reflex) and begin assisting
her breathing with a bag-valve-mask device. Her respiratory effo1·t is
inadequate and
should be treated with some form of positive-pressure ventilation,
not a nonrebreathing mask. Placing a semiconscious or unconscious
patient on his or her
side (recovery position) is appropriate if only he or she is breathing
adequately; this patient is not.
Which of the followi ng processes occurs during cellular/capillary gas
exchange?
A) The cells give up oxygen to the capillaries.
B) The cells receive carbon dioxide from the capillaries.
C) The capillaries give up oxygen to the cells.
D) The capillaries give up carbon dioxide to the cells. ---------CORRECT
ANSWER-----------------C) The capillaries give up oxygen to the cells.
At the cellular level, oxygen passes across the capillary bed from the
arterioles and into the cell, which is facilitated by a process called
diffusion, in which
,oxygen (like any gas) moves from an area of higher concentration to
an area of lower concentration. At the same time, carbon dioxide
crosses the capillary
bed and enters the venules, where it is transported back to the lungs
for reoxygenation.
A young female experienced massive facial trauma and is unresponsive.
After several attempts, you are unable to adequately open her
airway with the jaw-thrust maneuver. You should:
A) carefully tilt her head back and lift up on her chin.
B) insert a nasopharyngeal airway and apply oxygen.
C) apply oxygen and reattempt the jaw-thrust maneuver.
D) assist her ventilations with a bag- valve-mask device. ---------
CORRECT ANSWER-----------------A) carefully tilt her head back and lift up
on her chin.
The jaw-thrust maneuver should be used to open the airway of any
trauma patient because it does not require manipulation of the neck.
However, if the jawthrust
maneuver does not adequately open the patient's airway, you should
carefully perform the head tilt-chin lift maneuver. The patient's
airway must be
, patent, regardless of the situation. After opening an unresponsive
patient"s airway, ensure that it is clear of secretions (suction as
needed), insert an airway
adjunct, and assess breathing. If the patient is breathing adequately,
administer high-flow oxygen via a nonrebreathing mask. If the patient
is breathing
inadequately, assist his or her ventilations with a bag-valve-mask
device. You should avoid the use of a nasopharyngeal airway in
patients with massive head
or facial trauma. If the airway is accidentally pushed through a hole
caused by the fracture, it may penetrate the cranium and enter the
brain.
An inaccurate pulse oximetry reading may be caused by:
A) severe peripheral vasoconstriction.
B) excessive red blood cell production.
C) heat illnesses, such as heatstroke.
D) a heart rate greater than 100 beats/min. ---------CORRECT ANSWER---
--------------A) severe peripheral vasoconstriction.
A pulse oximeter measures the percentage of hemoglobin that is
saturated with oxygen. Under normal conditions, a patient's oxygen
saturation (SpO2)