Unit 8 Flashcards
What is punctured to anesthetize the trachea? Which was will the needle be facing?
The cricothyroid membrane - needle is caudal
** Patient should cough to help spread
Which nerve is anesthetized when injecting near the greater corner of the hyoid bone?
Internal branch of the SLN
Which nerve is anesthetized when injecting near the greater palatine foramen?
The greater and lesser palatine
Where does the RLN derive from?
The vagus nerve
What is the first line of treatment for severe bradycardia and hypotension from a high spinal?
Epinephrine
Which position will reduce the spread of a hyperbaric solution when treating a high spinal?
Reverse Trendelenburg
Where are the cardiac accelerator fibers?
T1-T4
When conducting an adductor canal block, which muscle identifies the lateral border?
Vastus medialis
When conducting an adductor canal block, which muscle identifies the posterior border?
Adductor longus
When conducting an adductor canal block, which muscle identifies the anteromedial border?
Sartorius
Which muscle becomes weak with an adductor canal block?
Vastus medialis
Subcutaneous injection of the entire width of the axillary crease will anesthetize what nerve?
Intercostobrachial
What are the classic signs of oculosympathetic paresis? What is another name?
Horner Syndrome - Mad as a hornet
HOT, DRY, Constricted pupils, Droopy eyelid
Droopy eyelid - Ptosis
Constricted pupils - Miosis
Which function enhances the ultrasound image at a predetermined distance?
Gain
Which ultrasound waves penetrate deeper, and which are better for shallow?
Low frequency waves - Deeper
High frequency waves - Shallow (more absorption)
What does “B” mode and ‘M” mode stand for?
B - Brightness + real time image
M - Motion + time lapse
What is the highest potential risk for an intercostal nerve block?
Ipsilateral pneumothorax
What is the treatment for methemoglobinemia?
Methylene Blue 1-2mg/kg
Which two locals cause methemoglobinemia?
Prilocaine and Benzocaine
Cetacaine contains benzocaine
During a caudal epidural on an infant, what is the final layer to be transversed? Where does the dural sac end?
Sacrococcygeal ligament
Dural sac ends around S3/S4
Which nerves have both sensory and motor innervation to the ankle?
Deep peroneal
Posterior Tibial
Sensory to foot
What is the efferent and afferent pathway to the oculocardiac reflex?
Efferent - 10 vagus
Afferent - 5 trigeminal
How many levels higher does a spinal blockade reach?
2 levels
