Apex- Truncal Blocks Flashcards
see pic
& what kind of approach is this to a TAP block?

C & D; lateral approach
- TAP block targets: T6-L1
- Travel between internal oblique (C) & transverse abdominis muscles (D)
a TAP block provides analgesia to what 2 areas?
-the abdominal wall (muscle and skin)
& the parietal peritoneum
What approaches to a tap block should be taken for:
Procedures above the umbilicius (1)
Procedures below the umbilicus (2)
above > subcostal approach
below > lateral or posterior approach
Which thoracolumbar nerves does a TAP block anesthetisize and where?
T6-L1
as they travel in the fascial plane between the internal oblique in the transverse abdominis muscles
How much local anesthetic to inject with a tap block?
20mls at each injection site
2 complications of a TAP block
- LAST
- Peritoneal injury
What landmark should be identified if doing a TAP block by the landmark technique?
The interior lumbar triangle (triangle of Petit)
T/F- the internal oblique is deep to the transverse abdominis
false- the transverse abdominis is deep to the internal oblique
Which nerves innervate the internal oblique and transverse abdominis muscles?
T6-L1
-think TAP block
What position should pts be in with each approach to a tap block (subcostal, lateral, posterior)
-all the same - supine
Where should the transducer be placed for a subcostal approach to a TAP block?
lateral to the xiphroid process and parallel with teh lower margin of the rib cage

Label - which approach is this showing for what block?

Lateral

Which TAP block approach involves placing the transducer at the mid-axillary line, superior and parallel to the iliac crests?
Lateral Approach

Label
What approach gives this view?

Skin/transducer
Sub-q tissue
External oblique
Internal oblique
Transverse abdominis
Peritoneal cavity
Lateral Approach
When you do a posterior approach to a TAP block, you place the tranducer in the same positon as the lateral approach, then slide it past the midaxillary line until you see what?
The aponeurosis of the tensor fascia late (TFL)
yikes

Label the posterior approach to a TAP block ultrasound

Posterior

What landmark technique involves advancing the needle over the iliac crest until you feel a “pop” and where is your needle at this point?
TAP block
between the internal oblique and transverse abdominus (inside the triangle of petit)
What block anesthetizes the intercosta, iliohypogastric, and ilioinguinal nerves?
TAP block
What are the 4 paired muscles of the anterolateral abdominal wall?
- Rectus abdominis
- Transversus abdominis
- External oblique
- Internal oblique
What are the anatomic boundaries of the inferior lumbar triange? (Triangle of petit)
- Inferior border =
- Posterior border =
- Anterior border =
- Inside the triangle (floor) =
- Inferior border = iliac crest
- Posterior border = Latissismus dorsi
- Anterior border = external oblique
- Inside the triangle (floor) = internal oblique
a PEC II block targets the facial plane between the: (select 2)
A. Pec major and minor muscles
B. Medial Pec and lateral pec nerves
C. Pec minor and serratus anterior muscles
D. Serratius anterior and latissiumus dorsi muscles
A. Pec major and minor muscles
C. Pec minor and serratus anterior muscles
PECS blocks provide anesthesia to the (anterior/posterior/lateral) chest wall
anterior
PECS 1 block targets which nerves by injecting local where?
medial and lateral pectoralis nerves
inject LA into the fascial plane between the pec major and minor mujscles
What does the PECS II block provide addtional coverage to? (2)
the thoracic intercostal nerves and the long thoracic nerve
unlike PECS 1 & 2 blocks, the _______ block specifically targets the axillary region and not the chest.
Serratus anterior plane (SAP) block
What kind of block would be indicated for breast reconstruction with a latissimus dorsi flap?
SAP block
(Serratus Anterior Plane) block
volume of LA for a PEC 1 vs PEC 2 vs SAP block
PEC 1 & 2 = 10-15mls
SAP = 20mls
What artery is at risk for inadvertant puncture/injury/hematoma/LAST with PECS and SAP blocks?
Thoraco-Acromial artery
Label


What type of block would be best for breast implantantion?
PECS 1
What kind of block would be best for implantable cardiac device?
PECS 2
What kind of block would be good for a mastectomy, sentinal node biopsy, or tumor resection?
PECS 2
Label


T/F- you can do an isolated PECS 2 block
False- it is done in combo with PECS I block
What kind of block?

PECS 1
What kind of block?

PECS II
*Pec minor - serrates anterior muscles
What kind of block?

SAP block
Serratus Anterior Plane block
Label imaging for a SAP block


What kind of block?

SAP block - Serratus Anterior Plane block
*Lateral Dorsi & Serratus anterior
Max local anesthetic doses for PECS block vs SAP block
PECS block - 0.2mg/kg
SAP block 0.4mg/kg
Benifits of an intercostal nerve block include: (Select 2):
A. Multi-level coverage after a single injection
B. Decreased risk of opioid induced respiratory depression
C. Hemodynamic stability
D. Low risk of LAST
B. Decreased risk of opioid induced respiratory depression
C. Hemodynamic stability
T/F: an intercostal nerve block provides anesthesia along a single dermatome
True
-this necessitates multiple injections for procedures that require coverage of multiple dermatome levels
T/F: intercostal nerve blocks inhibit sympatheteic nerves and can lead to signfiicant hemodynamic instability
False
-They do block sympathetic nerves, but they don’t cause significant hemodynamic instability
An intercostal nerve block provides (sensory/motor) anesthesia of the trunk from where to where?
xiphoid to pubis (single dermatome level)
What kind of nerve block would be good for herpes zoster pain?
Intercostal block
T/F- an intercostal block would be appropriate for a cholecystectomy
True
what kind of block would be approrpiate for a chest tube or rib fractures?
intercostal block
How many ml’s of LA would you inject per dermatome level for an intercostal block?
3-5mls
2 complications of an intercostal block
PTX, LAST
What are the intercostal nerves of the chest that innervate the skin covering the chest wall, intercostal muscles, and parietal pleura?
T2-T6
What are the intervostal nerves of the abdomen that innervate the skin over the anterior abdomen, abdominal muscles, and parietal peritoneum?
T7-T11
7-11 fucks with your abdomen
Label


What position should the pt be in for an intercostal block?
sitting or prone
For an intercostal block, the transducer should be in the sagittal orientation, approximately ___cm lateral to the midline at the desired block level
7cm
What kind of block?

Intercostal
Label for an intercostal block


What kind of block?

Intercostal
Who might it not be good to do an intercostal block on and why?
a severe COPD pt who depend on their intercostal muscles for ventilation
Advantages of a thoracic paravertebral block include the ability to (select 2):
A. Produce unilateral epidural anesthesia
B. Achieve segmental blockade
C. Produce spinal anesthesia
D. Elminate the risk of lask
A. Produce unilateral epidural anesthesia
B. Achieve segmental blockade
What block targets the spinal nerves exiting the vertebral foramen?
Paravertebral block
What kind of block can be thought of as a unilateral epidural?
Paravertebral block
Unlike intercostal blocks, what block anesthetizes muldtiple dermatomal levels, reducing the number of injections required?
Paravertebral block
How many mls of LA should be injected for a paravertebral block?
5-10mls
when doing a paravertebral block, how can you achieve b/l blockade?
by using a larger volume of local anesthetic
t/f - intrathecal injection is normal with a paravertebral block
fasle- it’s a complication
What kind of block can result in a post-dural puncture headache?
Paravertebral block
What kind of block would be best for pain management for herpes zoster where coverage of more than 1 dermatome is needed
Paravertebral block
Pt position for a paravertebral block
Lateral decub , block side up
T/F: when doing a paravertebral block, the transducer should be placed laterally to the spinous process at the level you want to block
true
What block?

Paravertebral block
What block?

Paravertebal block
Label for paravertebal block


What anatomical structures make up the borders of the paravertebral space?
- Anterior border:
- Medial border:
- Posterior border:
- Anterior border: Parietal pleura
- Medial border: Vertebral body and intravertebral foramenPosterior border: Transverse process and superior costotransverse ligament
Select the BEST regional anesthesia techniques that provide analgesia to a patient with rib fractures (select 3):
- Intercostal
- Transverse abdominus plane
- IPACK
- Erector spinae
- Paravertebral
- Fascia iliaca
What’s wrong w the other 2 options?
- intercostal
- Erector spinae
- Paravertebral
(or a thoracic epidural)
- IPACK block targets the knee
- fascia iliaca block targets the hip
What block targets the dorsal and ventral rami of the thoracolumbar nerves at the level of injection?
Erector spinae block
Whats the group of spinal muscles that help the vertebral column stay upright?
Erector spinae muscles
label these muscles
what are they known as collectively?

Green - Spinalis
Orange- Iliocostalis
Blue- Longissimus
Erector Spinae
The erector spinae consists of what 3 paired muscles that extend from the sacrum to the skill base?
“I Like Standing”
- Iliocostalis
- Longissimus (the longest one and most lateral ones)
- Spinalis (closest to the spine)
Injecting LA deep to hte erector spinae muscle group and superficial to the transverse process causes significant _________ spread.
craniocaudal (up and down)
What block?
What approach?

Erector Spinae block
Transvere process + Erector spinae muscle group
Thoracic Approach
erector spinae block - how much mls of LA
20mls in 5ml increments
What block, what approach?

Erector spinae block
lumbar approach
Approximately how many dermatome levels are covered by a thoracic erector spinae block vs lumbar erector spinae block?
Thoracic ESB = 8-10 dermatome levels
Lumbar ESB = 3-4 dermatome levels
When performing a rectus sheath block, the needle is inserted into the fascial plane between the (select 2):
- external oblique muscle
- anterior rectus sheath
- rectus abdominis muscle
- posterior rectus sheath
- rectus abdominis muscle
- posterior rectus sheath
What block is used as part of a multimodal pain management plan for midline surgical incisions of the abdomen (ie. umbillical hernia repar)
Rectus sheath block
What arteries travel within the rectus sheath and are at risk for intravascular injection?
the inferior epigastric arteries
What block?

Rectus Sheath Block
* Rectus abdominus muscle + Posterior rectus sheath
Label U/S for rectus sheath block


Match each quadratus lumborum block with its target area for depositing local anesthetic:
- Quadratus lumborum 3:
- Quadratus lumborum 2:
- Quadratus lumborum 1:
Options; Antior/Lateral/Posterior to the quadrataus lumborum muscle
- Quadratus lumborum 3: Anterior
- Quadratus lumborum 2: Posterior (2 buttcheeks)
- Quadratus lumborum 1: Lateral
What is the target area for the quadratus lumborum block?
the thoracolumbar fascia
What block is indicated for providing analgesia for procedures of the anteriolateral abdominal wall?
Quadratus Lumborum Block
What frequency transducers should be used for a QL 1, 2, and 3 blocks?
QL1 & 2 = high-frequency linear array (>7MHz)
QL3 = low frequency curvilinear array (2-5MHz)
Where does the quadratus lumborum muscle reside?
deep in the posterior abdominal wall
-originates in the iliac crest & iliolumbar ligament
& extends to the 12th rib and the transverse processes of L1-L4
What is referred to as a indirect paravertebral block?
the quadratus lumborum block
The quadratus lumborum muscle resides between which two layers of the thoracolumbar fascia?
anterior and middle
Label Quadratus Lumborum Block anatomy


A QL1 block is for surgeries where?
What bout QL 2 & 3 blocks?
QL 1 - abdominal surgery below the umbilicus
QL 2 &3: Abdominal surgery below or above the umbilicus (up to T6)
What kind of block?

QL 1 block
anteriolateral border of the QL muscle
Which block is associated with a shamrock sign on the ultrasound?
QL3 block
stem = L4 transverse process
3 leaves = erector spinae, QL muscle, psoas muscle (moving posterior to anterior)
Label - what block

Q3 block
Will all fascial plane blocks, (large/small) volumes of (high/lower) concentration anesthetic are needed to achieve a consistent, reliable block.
large volumes of low concentrations
Which nerve block produces aensthesia by injecting local anesthetic into the thoracolumbar fascia?
A. PECS 2
B. Intercostal
C. TAP
D. QL1
D. QL 1
What dat?
A. Tendinous intersection
B. Semilunaris
C. Arcuate line
D. Linea alba

D. Linea alba
What is the BEST regional anesthetic technique to provide analgesia to a patient with herpese zoster?
A. Intercostal nerve block
B. QL 3 block
C. Erector spinae block
D. Rectus sheath block
A. Intercostal nerve block