DNAP 703 Regional Exam 2025/2026 With
100% Accurate Answers
What factors affect the onset of local anesthetics? - Accurate
answers Concentration of Drug
Degree of Ionization
Hydrophobicity
Physical characteristics of tissue surrounding the injection area
Which nerves in a bundle will be blocked faster, myelinated or
unmyelinated? Large vs. small? Inner or outer nerves in bundle?
- Accurate answers Myelinated
Small
Outer--correspond to proximal structures
When applying a nerve stimulator in a PNB which nerves will
be more easily stimulated? - Accurate answers Large-
motor activity will be seen
What mA level is ideal for the correct placement of a PNB? -
Accurate answers Less than 0.5 mA
What are the absolute and relative contraindications for a PNB?
- Accurate answers Absolute:
, Patient Refusal
Infection at insertion site
Coagulopathy
Relative:
Uncooperative Patient
Psych Disease
Pre-Existing Neurological Disease
Risk of LAST
Contralateral Phrenic Nerve Palsy
Anesthetized Patients
What techniques can be performed to prevent accidental IV
injection of local anesthetic? - Accurate answers
Incremental Dosing (5 mL at a time)
Use of epi + LA as a test dose
Frequent Aspiration
What blocks are associated with the highest risk of LAST? -
Accurate answers Epidural (33% of reported LAST cases)
Axillary (17%)
Interscalene (13%)
Rank blocks from highest to lowest risk of LA toxicity? -
Accurate answers IV
Tracheal
Interpleural
100% Accurate Answers
What factors affect the onset of local anesthetics? - Accurate
answers Concentration of Drug
Degree of Ionization
Hydrophobicity
Physical characteristics of tissue surrounding the injection area
Which nerves in a bundle will be blocked faster, myelinated or
unmyelinated? Large vs. small? Inner or outer nerves in bundle?
- Accurate answers Myelinated
Small
Outer--correspond to proximal structures
When applying a nerve stimulator in a PNB which nerves will
be more easily stimulated? - Accurate answers Large-
motor activity will be seen
What mA level is ideal for the correct placement of a PNB? -
Accurate answers Less than 0.5 mA
What are the absolute and relative contraindications for a PNB?
- Accurate answers Absolute:
, Patient Refusal
Infection at insertion site
Coagulopathy
Relative:
Uncooperative Patient
Psych Disease
Pre-Existing Neurological Disease
Risk of LAST
Contralateral Phrenic Nerve Palsy
Anesthetized Patients
What techniques can be performed to prevent accidental IV
injection of local anesthetic? - Accurate answers
Incremental Dosing (5 mL at a time)
Use of epi + LA as a test dose
Frequent Aspiration
What blocks are associated with the highest risk of LAST? -
Accurate answers Epidural (33% of reported LAST cases)
Axillary (17%)
Interscalene (13%)
Rank blocks from highest to lowest risk of LA toxicity? -
Accurate answers IV
Tracheal
Interpleural
