ABGS AND RESPIRATORY UPDATED EXAM
QUESTIONS AND CORRECT ANSWERS
●● What are the indications for performing an ABG?
Answer: To evaluate ventilation, acid-base balance, oxygenation status,
and monitor disease progression.
●● Which artery is most commonly used for ABG sampling?
Answer: Radial artery
●● Why is the radial artery preferred for ABG sampling?
Answer: It is near the surface, easy to stabilize, has collateral circulation,
and the procedure is relatively pain-free.
●● What is the purpose of the Modified Allen Test?
Answer: To assess collateral circulation in the ulnar artery before radial
artery puncture.
●● What are the contraindications for ABG sampling?
Answer: Abnormal Allen test results, lesions, surgical shunts,
coagulopathy, and anticoagulation therapy.
●● What complications can arise from ABG sampling?
, Answer: Infection, hemorrhage, hematoma, and inaccurate medical
treatment based on improper analysis.
●● What equipment is needed for percutaneous blood sampling?
Answer: Gloves, blood gas kit syringe, needle, antiseptic swabs, gauze,
tape, and sharps container.
●● What should be monitored during ABG sampling?
Answer: FIO2, puncture site appearance, vitals, clinical appearance, and
presence of pulsatile blood return.
●● What are common problems encountered when obtaining an ABG
sample?
Answer: Inaccessible artery, absent pulse, and sample contamination.
●● What is the significance of a small spurt of blood during ABG
sampling?
Answer: It suggests that the needle may have passed through or entered
near the arterial wall.
●● What should be done if there is difficulty obtaining a blood sample?
Answer: The needle should be slowly withdrawn and repositioned until
pulsatile return is achieved.
QUESTIONS AND CORRECT ANSWERS
●● What are the indications for performing an ABG?
Answer: To evaluate ventilation, acid-base balance, oxygenation status,
and monitor disease progression.
●● Which artery is most commonly used for ABG sampling?
Answer: Radial artery
●● Why is the radial artery preferred for ABG sampling?
Answer: It is near the surface, easy to stabilize, has collateral circulation,
and the procedure is relatively pain-free.
●● What is the purpose of the Modified Allen Test?
Answer: To assess collateral circulation in the ulnar artery before radial
artery puncture.
●● What are the contraindications for ABG sampling?
Answer: Abnormal Allen test results, lesions, surgical shunts,
coagulopathy, and anticoagulation therapy.
●● What complications can arise from ABG sampling?
, Answer: Infection, hemorrhage, hematoma, and inaccurate medical
treatment based on improper analysis.
●● What equipment is needed for percutaneous blood sampling?
Answer: Gloves, blood gas kit syringe, needle, antiseptic swabs, gauze,
tape, and sharps container.
●● What should be monitored during ABG sampling?
Answer: FIO2, puncture site appearance, vitals, clinical appearance, and
presence of pulsatile blood return.
●● What are common problems encountered when obtaining an ABG
sample?
Answer: Inaccessible artery, absent pulse, and sample contamination.
●● What is the significance of a small spurt of blood during ABG
sampling?
Answer: It suggests that the needle may have passed through or entered
near the arterial wall.
●● What should be done if there is difficulty obtaining a blood sample?
Answer: The needle should be slowly withdrawn and repositioned until
pulsatile return is achieved.
