Test Bank For Fundamentals of Nursing NCLEX Practice Quiz (600 Questions and Answers) UPDATED ON
JANUARY 6 2023.
1. Question
Which of the following i... [Show More] s not true regarding the types of a
nasogastric tube?
A. Cantor tube is a single-lumen long tube with a small
inflatable bag at the distal end.
B. Miller-Abbott tube is a long double-lumen used to drain and
decompress the small intestine.
C. Levin tube is a double-lumen nasogastric tube with an air
vent.
D. Sengstaken-Blakemore tube is a three-lumen tube.
Incorrect
Correct Answer: C. Levin tube is a double-lumen nasogastric tube
with an air vent.
A Levin tube is a single lumen nasogastric tube while a Salem
sump tube is a double-lumen nasogastric tube with an air vent. The
Levin tube is used primarily for long-continued gastric drainage and
for gavage feeding. It is also used for diagnostic purposes. Its
advantages are that it can be inserted either nasally or orally and
that it is firm enough to be passed into an unconscious patient but
flexible enough so there is little danger of producing injury.
Option A: The Cantor Tub is a 10-foot long, single-lumen tube used
for intestinal decompression. The Cantor tube has a mercuryweighted rubber tab attached to its perforated tip to help carry the
e g ted ubbe tab attac ed to ts pe o ated t p to e p ca y t e
tube through the stomach and intestine. The mercury is placed in
the bag with a syringe and needle before the tube is inserted
nasally by the doctor.
Option B: The Miller-Abbott tube is a 10-foot long double-lumen
tube that is equipped with a small balloon near the metal tip at the
distal end of the tube. One lumen is used for aspiration and
irrigation; the other is used for inflating the balloon. Air, water, or
mercury (4 to 5 ml) accomplishes inflation. This intestinal tube is
used for small bowel suction. The two openings are independent of
each other and are clearly marked.
Option D: Also referred to as a Blakemore tube, this tube is a threelumen, esophageal-gastric balloon tube that is used in the
treatment of bleeding esophageal varices. One lumen is used to
inflate the esophageal balloon, one lumen is used to inflate the
gastric balloon, and the third lumen is used for decompression and
irrigation of the stomach.
2. Question
A new RN nurse is about to insert a nasogastric tube into a client
with Guillain-Barre Syndrome. To determine the accurate
measurement of the length of the tube to be inserted, the nurse
should:
A. Place the tube at the tip of the nose, and measure by
extending the tube to the earlobe and then down to the top of the
sternum.
B. Place the tube at the tip of the nose and measure by
extending the tube to the earlobe and then down to the xiphoid
process.
C. Place the tube at the tip of the nose, and measure by
extending the tube down to the chin and then down to the top of the
xiphoid process.
D. Place the tube at the base of the nose and measure by
extending the tube to the earlobe and then down to the top of the
sternum.
Incorrect
Correct Answer: B. Place the tube at the tip of the nose, and
measure by extending the tube to the earlobe and then down to the
xiphoid process.
Estimate the length of insertion by measuring the distance from the
tip of the nose, around the ear, and down to just below the left
costal margin. This point can be marked with a piece of tape on the
tube. When using the Salem sump NG tube (Kendall, Mansfield,
MA) in adults, the estimated length usually falls between the
second and third preprinted black lines on the tube.
Option A: Apart from the nose-to-ear-to-xiphisternum (NEX)
method, several other methods for determining the length of the
tube have been described. Among the various options, a formula
based on gender, weight, and nose-to-umbilicus measurement
while lying flat was found to be safer and more accurate in a study
by Santos et al.
Option C: While the stomach is a highly distensible structure and
therefore, can vary in length, the empty stomach is generally around
25 cm long. Thus if one intended to place a tube through the nares
and place it in the middle of the stomach, then approximately 55
cm of the tube should be inserted.
Option D: There are several methods to estimate the depth that an
NG should be placed. All methods for estimation will have some
margin of error. A common pre-procedure maneuver is to loop the
tube over one of the patient’s ears and place the tip at the patient’s
xiphoid process and use this as an estimate for the length of the
tube that should be inserted.
3. Question
A stroke client who was initially on NGT feeding was able to
A stroke client who was initially on NGT feeding was able to
tolerate a soft diet so the physician ordered the removal of it. The
nurse would instruct the client to do which of the following before
he removes the tube?
A. Inhale and exhale simultaneously.
B. Take a long breath and hold it.
C. Do a Valsalva maneuver.
D. Blow the nose.
Incorrect
Correct Answer: B. Take a long breath and hold it.
Holding the breath closes the glottis hence it will be easier to
withdraw the tube through the esophagus into the nose, and this
method will also prevent aspiration. An NG tube should be removed
if it is no longer required. The process of removal is usually very
quick. Prior to removing an NG tube, verify physician orders. If the
NG tube was ordered to remove gastric content, the physician’s
order may state to “trial” clamping the tube for a number of hours
to see if the patient tolerates its removal. During the trial, the
patient should not experience any nausea, vomiting, or abdominal
distension.
Option A: Instruct the patient to take a deep breath and hold it. This
prevents aspiration; holding the breath closes the glottis. Kink the
NG tube near the naris and gently pull out the tube in a swift, steady
motion, wrapping it in your hand as it is being pulled out. Dispose of
tube in garbage bag.
Option C: The Valsalva maneuver is a breathing technique that can
be used to unclog ears, restore heart rhythm or diagnose an
autonomic nervous system (ANS). To perform the Valsalva
maneuver, the patient should close his mouth, pinch the nose shut
and press the air out like blowing up a balloon.
Option D: Blowing the nose is a way of clearing out mucus that has
collected debris and pollutants from the atmosphere. Most of the
time, people blow their nose because of excess mucus production
– a cold, nasal allergy, hay fever, or other conditions. [Show Less]
