APEX MOCK 8 exam Question and
answers correctly solved 2026/2027
In a premature infant with a right to left shunt what is the best location for placement of a pulse
oximeter to monitor retinal oxygen levels?
A. Left hand
B. Left foot
C. Right foot
D. Right hand - correct answer D. Right hand
The recommended way to assess a right to left shunt is to monitor pre-and post doctoral SPO2. If a Right
to Left shunt is present the preductal site will register a higher SPO2.
Pre-ductal: right hand
Post ductal: left hand, left leg, right leg
It is often prudent to monitor BOTH pre and post ductal sites
In which situation should the e-cylinder valve on the Anesthesia machine be open? Select 2
If the flush valve is actuated frequently
When pipeline crossover is suspected
While performing the machine check
During a negative pressure leak test - correct answer When pipeline crossover is suspected
While performing the machine check
A bariatric patient two days post Roux-en-Y gastric bypass has developed an ileum and a small bowel
obstruction and needs to return to the OR for open laparotomy. Which an anesthetic intervention is key
to this re-operation?
, A. Full stomach prophylaxis with metoclopramide.
B. Apply 15 CPAP during pre-oxygenation.
C. Intravenous stress, steroid coverage.
D. Gastric pouch decompression before induction. - correct answer D. Gastric pouch decompression
before induction
And consultation with the surgeon decompress the gastric pouch with a gently inserted gastric tube
prior to induction
Studies equivocate regarding whether fasted obese patients have abnormal gastric emptying. However,
a morbidly obese patient with SNO and ILEUS is a high risk for aspiration during induction. Do not use
prokinetic agents and patients with the mechanical obstruction to gastric emptying.
Which nerve fibers regulate vascular tone? Select 2
B
C
A gamma
A beta - correct answer B & C
Because the SNS is the most important regulator of vascular tone, you must determine which fiber types
comprise the SNS.
B fibers serve as the preganglionic fibers of the SNS
C fibers serve as the postganglionic fibers of the SNS.
A beta mediate touch & pressure
A gamma mediate skeletal muscle tone
answers correctly solved 2026/2027
In a premature infant with a right to left shunt what is the best location for placement of a pulse
oximeter to monitor retinal oxygen levels?
A. Left hand
B. Left foot
C. Right foot
D. Right hand - correct answer D. Right hand
The recommended way to assess a right to left shunt is to monitor pre-and post doctoral SPO2. If a Right
to Left shunt is present the preductal site will register a higher SPO2.
Pre-ductal: right hand
Post ductal: left hand, left leg, right leg
It is often prudent to monitor BOTH pre and post ductal sites
In which situation should the e-cylinder valve on the Anesthesia machine be open? Select 2
If the flush valve is actuated frequently
When pipeline crossover is suspected
While performing the machine check
During a negative pressure leak test - correct answer When pipeline crossover is suspected
While performing the machine check
A bariatric patient two days post Roux-en-Y gastric bypass has developed an ileum and a small bowel
obstruction and needs to return to the OR for open laparotomy. Which an anesthetic intervention is key
to this re-operation?
, A. Full stomach prophylaxis with metoclopramide.
B. Apply 15 CPAP during pre-oxygenation.
C. Intravenous stress, steroid coverage.
D. Gastric pouch decompression before induction. - correct answer D. Gastric pouch decompression
before induction
And consultation with the surgeon decompress the gastric pouch with a gently inserted gastric tube
prior to induction
Studies equivocate regarding whether fasted obese patients have abnormal gastric emptying. However,
a morbidly obese patient with SNO and ILEUS is a high risk for aspiration during induction. Do not use
prokinetic agents and patients with the mechanical obstruction to gastric emptying.
Which nerve fibers regulate vascular tone? Select 2
B
C
A gamma
A beta - correct answer B & C
Because the SNS is the most important regulator of vascular tone, you must determine which fiber types
comprise the SNS.
B fibers serve as the preganglionic fibers of the SNS
C fibers serve as the postganglionic fibers of the SNS.
A beta mediate touch & pressure
A gamma mediate skeletal muscle tone
