Nurse Anesthesia Certification Exam Questions
and Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which of the following is the most common cause of hypotension
during spinal anesthesia?
A. Fluid overload
B. Sympathetic blockade
C. Hypovolemia
D. Local anesthetic toxicity
Rationale: Sympathetic blockade from spinal anesthesia causes
vasodilation and decreased venous return, leading to hypotension.
Hypovolemia can contribute, but the primary mechanism is the
blockade of sympathetic fibers.
2. The minimum alveolar concentration (MAC) of an inhalational
anesthetic represents:
A. The maximum safe dose
B. The concentration causing hypotension
C. The concentration that prevents movement in 50% of patients
in response to a surgical stimulus
, D. The concentration that produces unconsciousness in all
patients
Rationale: MAC is a standard measure of anesthetic potency, defined
as the alveolar concentration needed to prevent movement in 50% of
patients subjected to a noxious stimulus.
3. Which opioid is most likely to cause histamine release?
A. Fentanyl
B. Remifentanil
C. Morphine
D. Sufentanil
Rationale: Morphine is known to cause histamine release, which can
lead to hypotension, flushing, and pruritus. Synthetic opioids like
fentanyl and sufentanil have minimal histamine effects.
4. Which agent is considered an inhalational anesthetic with the
fastest onset and offset?
A. Halothane
B. Isoflurane
C. Sevoflurane
D. Desflurane
,Rationale: Desflurane has a very low blood:gas solubility coefficient,
allowing for rapid induction and emergence. Sevoflurane is fast but
slightly slower, while halothane is much slower.
5. In a patient with severe asthma, which induction agent is
preferred to minimize bronchospasm?
A. Propofol
B. Thiopental
C. Ketamine
D. Etomidate
Rationale: Ketamine is preferred in asthmatic patients because it has
bronchodilatory effects, whereas propofol and etomidate may cause
less bronchodilation and thiopental may trigger bronchospasm.
6. Which neuromuscular blocker is most appropriate for rapid
sequence induction in a patient without contraindications?
A. Rocuronium
B. Succinylcholine
C. Vecuronium
D. Cisatracurium
Rationale: Succinylcholine is the drug of choice for rapid sequence
induction due to its very fast onset (30–60 seconds) and short
, duration, unless contraindicated (e.g., hyperkalemia, neuromuscular
disease).
7. Which local anesthetic has the longest duration of action when
used for peripheral nerve block?
A. Lidocaine
B. Mepivacaine
C. Prilocaine
D. Bupivacaine
Rationale: Bupivacaine is highly lipid-soluble and binds to tissue
proteins, providing a long duration of action, typically 4–12 hours,
depending on dose and site.
8. Which monitoring modality provides the earliest detection of
hypoxemia during general anesthesia?
A. Capnography
B. Pulse oximetry
C. Blood pressure cuff
D. Arterial blood gas
Rationale: Pulse oximetry provides continuous monitoring of oxygen
saturation and can detect hypoxemia earlier than intermittent blood
gas analysis. Capnography monitors ventilation, not oxygenation.
and Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which of the following is the most common cause of hypotension
during spinal anesthesia?
A. Fluid overload
B. Sympathetic blockade
C. Hypovolemia
D. Local anesthetic toxicity
Rationale: Sympathetic blockade from spinal anesthesia causes
vasodilation and decreased venous return, leading to hypotension.
Hypovolemia can contribute, but the primary mechanism is the
blockade of sympathetic fibers.
2. The minimum alveolar concentration (MAC) of an inhalational
anesthetic represents:
A. The maximum safe dose
B. The concentration causing hypotension
C. The concentration that prevents movement in 50% of patients
in response to a surgical stimulus
, D. The concentration that produces unconsciousness in all
patients
Rationale: MAC is a standard measure of anesthetic potency, defined
as the alveolar concentration needed to prevent movement in 50% of
patients subjected to a noxious stimulus.
3. Which opioid is most likely to cause histamine release?
A. Fentanyl
B. Remifentanil
C. Morphine
D. Sufentanil
Rationale: Morphine is known to cause histamine release, which can
lead to hypotension, flushing, and pruritus. Synthetic opioids like
fentanyl and sufentanil have minimal histamine effects.
4. Which agent is considered an inhalational anesthetic with the
fastest onset and offset?
A. Halothane
B. Isoflurane
C. Sevoflurane
D. Desflurane
,Rationale: Desflurane has a very low blood:gas solubility coefficient,
allowing for rapid induction and emergence. Sevoflurane is fast but
slightly slower, while halothane is much slower.
5. In a patient with severe asthma, which induction agent is
preferred to minimize bronchospasm?
A. Propofol
B. Thiopental
C. Ketamine
D. Etomidate
Rationale: Ketamine is preferred in asthmatic patients because it has
bronchodilatory effects, whereas propofol and etomidate may cause
less bronchodilation and thiopental may trigger bronchospasm.
6. Which neuromuscular blocker is most appropriate for rapid
sequence induction in a patient without contraindications?
A. Rocuronium
B. Succinylcholine
C. Vecuronium
D. Cisatracurium
Rationale: Succinylcholine is the drug of choice for rapid sequence
induction due to its very fast onset (30–60 seconds) and short
, duration, unless contraindicated (e.g., hyperkalemia, neuromuscular
disease).
7. Which local anesthetic has the longest duration of action when
used for peripheral nerve block?
A. Lidocaine
B. Mepivacaine
C. Prilocaine
D. Bupivacaine
Rationale: Bupivacaine is highly lipid-soluble and binds to tissue
proteins, providing a long duration of action, typically 4–12 hours,
depending on dose and site.
8. Which monitoring modality provides the earliest detection of
hypoxemia during general anesthesia?
A. Capnography
B. Pulse oximetry
C. Blood pressure cuff
D. Arterial blood gas
Rationale: Pulse oximetry provides continuous monitoring of oxygen
saturation and can detect hypoxemia earlier than intermittent blood
gas analysis. Capnography monitors ventilation, not oxygenation.
