OMSA EXAM 2 COMPLETE LATEST FINAL EXAM UPDATED FOR 2026- 2027
ACTUAL QUESTIONS WITH 100% CERTIFIED, ELABORATED & VERIFIED
SOLUTIONS
Barbiturate anesthetics have what properties?
Low incidence of nausea and vomiting, ability to cause brief apnea, and rapid onset of action
What is a characteristic of Brevital?
It is stable for 24 hours when prepared with sterile water
What is an effect that is characteristic of barbiturate anesthetics?
Detoxified by the liver and excreted by the kidneys
What are possible side effects of barbiturate anesthetics?
Hiccups, laryngospasm, and cough
What percentage of oxygen is in room air?
21%
When opening the valve of an oxygen tank the valve should be what?
fully opened
When observing a patient's EKG during GA it goes flatline. What should you do?
Check the EKG leads
Will a patient have a pulse during ventricular fibrillation?
NO
What is PVC?
Premature Ventricular Contractions
When do PVC's likely indicate hypoxia?
When multiform PVC's are present
What are PVC's a sign of?
Ventricular irritability
The heart rate is calculated from the EKG tracing based on what?
, The number of QRS complexes per minute
What is the order of the cardiac cycle as seen on the EKG?
P- QRS- T
What does the T wave represent on an EKG?
Ventricular depolarization
When does the depolarization of the ventricles occur?
Just prior to each heartbeat
Why do you pull back on the plunger of a local anesthetic before injecting?
Helps avoid injecting local anesthetic directly into a blood vessel
Why are local anesthetics combined with vasoconstrictors?
To slow uptake and reduce toxicity, to increase duration, and decrease bleeding at surgical site
What is the most common side effect of propofol (Diprivan)?
Decreases blood pressure
What are two of the most common vasoconstrictors added to local anesthetics?
epinephrine and levonordefrin
What is a long acting anesthetic?
bupivicaine (Marcaine)
What is the suggested maximum dose of lidocaine for a normal adult?
13 carpules of 2% lidocaine with 1 : 100,000 epinephrine
What is a common error in taking an accurate blood pressure?
Using a small cuff on a large patient
What is nitrous oxide normally used for in the OMS office?
an analgesic
What is the main reason that 100% oxygen is given after nitrous oxide?
to prevent diffusion hypoxia
Local anesthetics do not eliminate the sensation of what?
ACTUAL QUESTIONS WITH 100% CERTIFIED, ELABORATED & VERIFIED
SOLUTIONS
Barbiturate anesthetics have what properties?
Low incidence of nausea and vomiting, ability to cause brief apnea, and rapid onset of action
What is a characteristic of Brevital?
It is stable for 24 hours when prepared with sterile water
What is an effect that is characteristic of barbiturate anesthetics?
Detoxified by the liver and excreted by the kidneys
What are possible side effects of barbiturate anesthetics?
Hiccups, laryngospasm, and cough
What percentage of oxygen is in room air?
21%
When opening the valve of an oxygen tank the valve should be what?
fully opened
When observing a patient's EKG during GA it goes flatline. What should you do?
Check the EKG leads
Will a patient have a pulse during ventricular fibrillation?
NO
What is PVC?
Premature Ventricular Contractions
When do PVC's likely indicate hypoxia?
When multiform PVC's are present
What are PVC's a sign of?
Ventricular irritability
The heart rate is calculated from the EKG tracing based on what?
, The number of QRS complexes per minute
What is the order of the cardiac cycle as seen on the EKG?
P- QRS- T
What does the T wave represent on an EKG?
Ventricular depolarization
When does the depolarization of the ventricles occur?
Just prior to each heartbeat
Why do you pull back on the plunger of a local anesthetic before injecting?
Helps avoid injecting local anesthetic directly into a blood vessel
Why are local anesthetics combined with vasoconstrictors?
To slow uptake and reduce toxicity, to increase duration, and decrease bleeding at surgical site
What is the most common side effect of propofol (Diprivan)?
Decreases blood pressure
What are two of the most common vasoconstrictors added to local anesthetics?
epinephrine and levonordefrin
What is a long acting anesthetic?
bupivicaine (Marcaine)
What is the suggested maximum dose of lidocaine for a normal adult?
13 carpules of 2% lidocaine with 1 : 100,000 epinephrine
What is a common error in taking an accurate blood pressure?
Using a small cuff on a large patient
What is nitrous oxide normally used for in the OMS office?
an analgesic
What is the main reason that 100% oxygen is given after nitrous oxide?
to prevent diffusion hypoxia
Local anesthetics do not eliminate the sensation of what?
