Anesthesia for Orthopedics (Part 1) Flashcards

1
Q

Normal preoperative tests before a total joint replacement

A

-Check current meds (especially anticoagulants)
-CBC, BMP, Type and Screen, UA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

For surgical site infection prevention we will give what? When do we give it?

A

Cefazolin (Ancef) 1-2g IVPB
Should be given within 1 hour of incision
-If over 100kg give 2g

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

If they need to get another antibiotic due to allergy, it will be ____.

A

Vancomycin OR clindamycin Thanks Dana!!
-Give within 2 hours of cut time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Osteoarthritis is what?

A

Degeneration of articular cartilage with inflammation and pain with joint motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

T/F: Rheumatoid arthritis is the most common form of arthritis and effects 21% of US adults.

A

WRONGO.
-Osteoarthritis is actually the most common and it effects 21% of US adults.
-Prevalence is also going up due to aging population and obesity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Osteoarthritis is classified as being the leading cause of ____ ____ ____.

A

Lower extremity disability
-Knee highest risk at 46%
-Hip at 25%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

OA can be diagnosed ____, ____, and ____.

A

Radiographically, pathologically, or clinically.
-Radiographically most common (Kellgren-Lawrence grading system)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

OA defined by what symptoms?

A

Pain, stiffness, decreased ROM, NO SYSTEMIC involvement
-Knees, hips, first metacarpal, distal interphangeal joints most commonly affected

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

____ is the main manifestation of OA that eventually causes the pt to seek care.

A

Pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

OA management includes

A

Non-pharm and pharm interventions
-Weight loss, exercise, physiotherapy, bracing
-NSAIDs, opioids, local injections
-Surgery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Huge part of OA history/physical for anesthesia

A

-C-spine involvement
-Chart existing deficits (CYA!!!)
-Look over current med regimen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Rheumatoid Arthritis is what?

A

Autoimmune mediated SYSTEMIC inflammatory disease
-Pain and disability from destruction of synovial joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

RA characterized by what big symptom?

A

Morning stiffness that improves over the course of the day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

___ and ____ play a role in RA pathogenesis.

A

Cytokines and B lymphocytes
-B cells –> rheumatoid factor
-Cytokines –> infllammation cascade

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

RA Med Concerns
NSAIDs

A

D/c 2 days prior to surgery
Renal function, coags

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

RA Med Concerns
DMARDs

A

Check CBC and LFT
-Due to pancytopenia and liver harm

17
Q

DMARD are the only drugs that have the capability to do what in RA patients?

A

Only drugs that can slow down progression and prevent deformities

18
Q

RA Med Concerns
Corticosteroids

A

Impair wound healing and maybe enhance surgical infection risk

19
Q

RA Med Concerns
Leflunomide (never heard of her)

A

Check CBC and LFT
-Due to hepatotoxicity and pancytopenia

20
Q

RA Med Concerns
TNF inhibitors (Etanercept)

A

Infection risk

21
Q

RA Med Concerns
IL-1 Antagonist (Anakinra)

A

Infection risk

22
Q

RA physical exam concerns

A

C SPINE INSTABILITY (can be asymptomatic in up to 80% of pts)
-Atlanto-axial instability
-Atlanto-occipital subluxation
-Cranial settling onto c1
-Ankylosis in late stages
TMJ disease
Arytenoid disease / VC dysfunction
Srojen’s

23
Q

T/F: As cord compression worsens in RA, so do the patient’s symptoms.

A

FALSE.
-A high percentage of these patients are asymptomatic and symptoms do not necessarily align with severity of compression.

24
Q

You knew it was coming - biggest difference between OA and RA?

A

OA has no systemic effects
-RA with fever, weight loss, fatigue, myalgias, decreased appetite, Srojen’s

25
Q

Ankylosing Spondylitis is what?

A

Chronic progressive inflammation of spine and thorax

26
Q

Ankylosing Spondylitis is characterized by what?

A
  1. Lower back pain with morning stiffness (referred pain to butt)
  2. Bamboo Spine radiograph
    -Affects sarcoiliac joints and progresses cephalad
27
Q

AS most commonly effects __-__ vertebrae

A

C5-C7 –> have multiple airway plans!

28
Q

Biggest AS symptom CV related:

A

Aortic valve insufficiency
-Seen in 40% of patients

29
Q

What are big anesthesia concerns for these joint conditions - AS, OA, RA:

A

-Airway management –> we need thorough preoperative exams and preparation for tough airway
-Positioning –> we should plan to position these patients comfortably AND THEN induce
-Tough neuraxial –> limited spinal flexion and increased ossification of ligaments
-If using regional anesthesia, first check for neuropathy and chart (CYA!!)

30
Q

Involvement of the cricoarytenoid joint, cricothyroid joint, temporomandibular joint, and associated structures in the larynx is found in ___% of RA patients.

A

90%
-This can lead to postoperative airway obstructions and also can make their initial airway placement more difficult.

31
Q

T/F: Early implementation of conservative measures have proven to be useful in preventing kyphoscoliosis patients from needing corrective surgery.

A

FALSE.
-Over 80% of these patients have an idiopathic form.
-Surgery is indicated to prevent long-term ventilatory compromise when curvature exceeds 40 degrees.

32
Q

Kyphoscoliosis causes severe ____ pulmonary disease.

A

Restrictive

33
Q

The most important preoperative anesthesia implication for kyphoscoliosis pts is what?

A

Optimization of cardiopulmonary status.
-Remove airway irritants, treat infections, steroids for inflammation, treat GERD
-Pulmonary prehabilitation is great but often not covered by insurance and can be expensive –> incentive spirometer is free!

34
Q

Some important intraoperative anesthesia implication for kyphoscoliosis pts is what?

A

-Good access and proper positioning
-Invasive monitoring
-SSEP and MEP use (no NMB with MEP)
-EDUCATE if possible wake up test
-Optimization of blood plan
-Prepare for ICU postop