ATI GI Diagnostic & Therapeutic Procedures
2026/2027 | ATI RN GI Diagnostic & Therapeutic
Procedures Nursing Study Guide & Practice Questions |
ATI Content Mastery Series Exam Prep,
Gastrointestinal Diagnostic Tests & Therapeutic
Procedures, GI Assessment, Endoscopy, Colonoscopy,
Upper GI Series, Barium Studies, Liver & Gallbladder
Procedures, Pancreatic Diagnostics, Biopsy, Ostomy
Procedures, Nursing Responsibilities, Pre-Procedure &
Post-Procedure Care, Complications, Patient Safety,
Clinical Judgment, Prioritization & Detailed Rationales
Question 1: A nurse is preparing a client for an
esophagogastroduodenoscopy (EGD). Which pre-procedure instruction
is essential to prevent aspiration during the procedure?
A. "You may have clear liquids up to 2 hours before the procedure."
B. "You must remain NPO for at least 6 to 8 hours before the procedure."
C. "You should take your aspirin with a small sip of water the morning of the
procedure."
D. "You will need to drink a bowel preparation solution the night before the
procedure."
CORRECT ANSWER: B. "You must remain NPO for at least 6 to 8 hours
before the procedure."
Rationale: NPO status for 6 to 8 hours is required before an EGD to reduce
the risk of aspiration when the gag reflex is suppressed by sedation or
topical anesthesia. Clear liquids are not permitted within 2 hours, and a
bowel prep is for colonoscopy, not EGD.
Question 2: A client has just returned to the recovery area following an
EGD with conscious sedation. Which assessment finding requires
immediate nursing intervention?
A. The client reports a sore throat and mild bloating.
B. The client's gag reflex is absent.
C. The client's blood pressure is 118/72 mm Hg.
D. The client is drowsy but arousable.
CORRECT ANSWER: B. The client's gag reflex is absent.
,Rationale: The gag reflex is suppressed by topical anesthesia used during
EGD. Oral intake must be withheld until the gag reflex returns fully to
prevent aspiration. Sore throat and bloating are expected findings, and the
vital signs and sedation level are within normal post-procedure limits.
Question 3: A nurse is caring for a client who is scheduled for a
colonoscopy. The client asks why a bowel preparation is necessary.
Which response by the nurse is most accurate?
A. "The preparation prevents you from having a bowel movement during the
procedure."
B. "It cleanses the colon so the provider can clearly visualize the mucosa
for polyps and lesions."
C. "It reduces the risk of infection after the procedure."
D. "It prevents the barium from hardening in your intestines."
CORRECT ANSWER: B. "It cleanses the colon so the provider can
clearly visualize the mucosa for polyps and lesions."
Rationale: Adequate bowel preparation is essential for colonoscopy to
remove stool and debris, allowing clear visualization of the colonic mucosa
to detect polyps, lesions, and other abnormalities. Barium is used for
barium enema, not colonoscopy.
Question 4: A client is admitted with hematochezia. The nurse
understands that this finding most likely indicates bleeding from which
area?
A. Upper gastrointestinal tract proximal to the ligament of Treitz
B. Lower gastrointestinal tract or a massive upper GI bleed with rapid
transit
C. The biliary tract exclusively
D. The pancreas
CORRECT ANSWER: B. Lower gastrointestinal tract or a massive upper
GI bleed with rapid transit
Rationale: Hematochezia refers to bright red or maroon blood passed per
rectum, typically indicating a lower GI source. However, a massive upper GI
hemorrhage with rapid transit can also present as hematochezia.
,Question 5: A nurse is caring for a client who is 2 hours post-
percutaneous liver biopsy. Which position should the nurse ensure the
client maintains to reduce the risk of bleeding?
A. Supine with the head of bed elevated 45 degrees
B. Left lateral decubitus position
C. Right lateral decubitus position
D. Prone position
CORRECT ANSWER: C. Right lateral decubitus position
Rationale: After a liver biopsy, the client should lie on the right side for up to
2 to 6 hours to apply pressure over the biopsy site and reduce the risk of
bleeding. The liver is located in the right upper quadrant.
Question 6: A client is undergoing a paracentesis for ascites. The nurse
knows that albumin is administered intravenously for which purpose?
A. To prevent infection at the puncture site
B. To replace protein lost during the removal of large volumes of ascitic
fluid
C. To increase the sedative effect of the procedure
D. To prevent the need for a bowel preparation
CORRECT ANSWER: B. To replace protein lost during the removal of
large volumes of ascitic fluid
Rationale: For every 2 to 2.5 liters of ascitic fluid drained, intravenous
human albumin is administered to maintain satisfactory blood pressure
and prevent hypotension and kidney problems following removal of large
volumes of protein-rich fluid.
Question 7: A nurse is preparing to administer gastric lavage to a client
who ingested a toxic substance. Which client condition is an absolute
contraindication for this procedure?
A. Ingestion of a petroleum-based product
B. Ingestion of a strong acid or alkali
C. Loss of consciousness without intubation
D. All of the above are contraindications
CORRECT ANSWER: D. All of the above are contraindications
, Rationale: Gastric lavage is contraindicated in poisoning with strong acids
or alkalis due to the risk of perforation, in petroleum product ingestion due
to aspiration risk, and in unconscious clients without a protected airway
due to the risk of aspiration.
Question 8: During an upper GI endoscopy, the provider identifies a
bleeding ulcer and performs hemostasis. Which classification system
is used to describe the stigmata of recent bleeding from a peptic ulcer?
A. Los Angeles classification
B. Forrest classification
C. Prague classification
D. Child-Pugh classification
CORRECT ANSWER: B. Forrest classification
Rationale: The Forrest classification is the standardized system used to
describe the stigmata of recent hemorrhage from peptic ulcers during
endoscopy, which guides therapeutic decisions. The Los Angeles and
Prague classifications are used for reflux esophagitis and Barrett's
esophagus, respectively.
Question 9: A client is being evaluated for a suspected biliary
obstruction. Which endoscopic procedure should the nurse anticipate
the provider will perform?
A. Esophagogastroduodenoscopy (EGD)
B. Colonoscopy
C. Endoscopic retrograde cholangiopancreatography (ERCP)
D. Flexible sigmoidoscopy
CORRECT ANSWER: C. Endoscopic retrograde
cholangiopancreatography (ERCP)
Rationale: ERCP is a specialized endoscopic procedure that examines the
hepatobiliary system, including the bile ducts and pancreatic duct, and is
used to diagnose and treat biliary obstruction, such as from gallstones or
strictures.
Question 10: A nurse is monitoring a client during a paracentesis. The
nurse notes the client becomes hypotensive after 5 liters of ascitic
fluid have been removed. Which action should the nurse take first?
2026/2027 | ATI RN GI Diagnostic & Therapeutic
Procedures Nursing Study Guide & Practice Questions |
ATI Content Mastery Series Exam Prep,
Gastrointestinal Diagnostic Tests & Therapeutic
Procedures, GI Assessment, Endoscopy, Colonoscopy,
Upper GI Series, Barium Studies, Liver & Gallbladder
Procedures, Pancreatic Diagnostics, Biopsy, Ostomy
Procedures, Nursing Responsibilities, Pre-Procedure &
Post-Procedure Care, Complications, Patient Safety,
Clinical Judgment, Prioritization & Detailed Rationales
Question 1: A nurse is preparing a client for an
esophagogastroduodenoscopy (EGD). Which pre-procedure instruction
is essential to prevent aspiration during the procedure?
A. "You may have clear liquids up to 2 hours before the procedure."
B. "You must remain NPO for at least 6 to 8 hours before the procedure."
C. "You should take your aspirin with a small sip of water the morning of the
procedure."
D. "You will need to drink a bowel preparation solution the night before the
procedure."
CORRECT ANSWER: B. "You must remain NPO for at least 6 to 8 hours
before the procedure."
Rationale: NPO status for 6 to 8 hours is required before an EGD to reduce
the risk of aspiration when the gag reflex is suppressed by sedation or
topical anesthesia. Clear liquids are not permitted within 2 hours, and a
bowel prep is for colonoscopy, not EGD.
Question 2: A client has just returned to the recovery area following an
EGD with conscious sedation. Which assessment finding requires
immediate nursing intervention?
A. The client reports a sore throat and mild bloating.
B. The client's gag reflex is absent.
C. The client's blood pressure is 118/72 mm Hg.
D. The client is drowsy but arousable.
CORRECT ANSWER: B. The client's gag reflex is absent.
,Rationale: The gag reflex is suppressed by topical anesthesia used during
EGD. Oral intake must be withheld until the gag reflex returns fully to
prevent aspiration. Sore throat and bloating are expected findings, and the
vital signs and sedation level are within normal post-procedure limits.
Question 3: A nurse is caring for a client who is scheduled for a
colonoscopy. The client asks why a bowel preparation is necessary.
Which response by the nurse is most accurate?
A. "The preparation prevents you from having a bowel movement during the
procedure."
B. "It cleanses the colon so the provider can clearly visualize the mucosa
for polyps and lesions."
C. "It reduces the risk of infection after the procedure."
D. "It prevents the barium from hardening in your intestines."
CORRECT ANSWER: B. "It cleanses the colon so the provider can
clearly visualize the mucosa for polyps and lesions."
Rationale: Adequate bowel preparation is essential for colonoscopy to
remove stool and debris, allowing clear visualization of the colonic mucosa
to detect polyps, lesions, and other abnormalities. Barium is used for
barium enema, not colonoscopy.
Question 4: A client is admitted with hematochezia. The nurse
understands that this finding most likely indicates bleeding from which
area?
A. Upper gastrointestinal tract proximal to the ligament of Treitz
B. Lower gastrointestinal tract or a massive upper GI bleed with rapid
transit
C. The biliary tract exclusively
D. The pancreas
CORRECT ANSWER: B. Lower gastrointestinal tract or a massive upper
GI bleed with rapid transit
Rationale: Hematochezia refers to bright red or maroon blood passed per
rectum, typically indicating a lower GI source. However, a massive upper GI
hemorrhage with rapid transit can also present as hematochezia.
,Question 5: A nurse is caring for a client who is 2 hours post-
percutaneous liver biopsy. Which position should the nurse ensure the
client maintains to reduce the risk of bleeding?
A. Supine with the head of bed elevated 45 degrees
B. Left lateral decubitus position
C. Right lateral decubitus position
D. Prone position
CORRECT ANSWER: C. Right lateral decubitus position
Rationale: After a liver biopsy, the client should lie on the right side for up to
2 to 6 hours to apply pressure over the biopsy site and reduce the risk of
bleeding. The liver is located in the right upper quadrant.
Question 6: A client is undergoing a paracentesis for ascites. The nurse
knows that albumin is administered intravenously for which purpose?
A. To prevent infection at the puncture site
B. To replace protein lost during the removal of large volumes of ascitic
fluid
C. To increase the sedative effect of the procedure
D. To prevent the need for a bowel preparation
CORRECT ANSWER: B. To replace protein lost during the removal of
large volumes of ascitic fluid
Rationale: For every 2 to 2.5 liters of ascitic fluid drained, intravenous
human albumin is administered to maintain satisfactory blood pressure
and prevent hypotension and kidney problems following removal of large
volumes of protein-rich fluid.
Question 7: A nurse is preparing to administer gastric lavage to a client
who ingested a toxic substance. Which client condition is an absolute
contraindication for this procedure?
A. Ingestion of a petroleum-based product
B. Ingestion of a strong acid or alkali
C. Loss of consciousness without intubation
D. All of the above are contraindications
CORRECT ANSWER: D. All of the above are contraindications
, Rationale: Gastric lavage is contraindicated in poisoning with strong acids
or alkalis due to the risk of perforation, in petroleum product ingestion due
to aspiration risk, and in unconscious clients without a protected airway
due to the risk of aspiration.
Question 8: During an upper GI endoscopy, the provider identifies a
bleeding ulcer and performs hemostasis. Which classification system
is used to describe the stigmata of recent bleeding from a peptic ulcer?
A. Los Angeles classification
B. Forrest classification
C. Prague classification
D. Child-Pugh classification
CORRECT ANSWER: B. Forrest classification
Rationale: The Forrest classification is the standardized system used to
describe the stigmata of recent hemorrhage from peptic ulcers during
endoscopy, which guides therapeutic decisions. The Los Angeles and
Prague classifications are used for reflux esophagitis and Barrett's
esophagus, respectively.
Question 9: A client is being evaluated for a suspected biliary
obstruction. Which endoscopic procedure should the nurse anticipate
the provider will perform?
A. Esophagogastroduodenoscopy (EGD)
B. Colonoscopy
C. Endoscopic retrograde cholangiopancreatography (ERCP)
D. Flexible sigmoidoscopy
CORRECT ANSWER: C. Endoscopic retrograde
cholangiopancreatography (ERCP)
Rationale: ERCP is a specialized endoscopic procedure that examines the
hepatobiliary system, including the bile ducts and pancreatic duct, and is
used to diagnose and treat biliary obstruction, such as from gallstones or
strictures.
Question 10: A nurse is monitoring a client during a paracentesis. The
nurse notes the client becomes hypotensive after 5 liters of ascitic
fluid have been removed. Which action should the nurse take first?
