Test 1 Flashcards

1
Q

Osteoporosis

Causes: (4)
Stress Fractures where at: (4)
Meds taken: (4)

A

Osteoporosis Causes:
1.) ^ Parathyroid hormone
2.) Decreased Vitamin D
3.) Decreased Growth hormone
4.) Decreased insulin-like growth factor

Fractures:
1.) Spine (thoracic/lumbar)
2.) Compression
3.) Proximal Femur/ Humerus
4.) Wrist

Meds:
1.) Fosamax
2.) Actonel
3.) Reclast
4.) Boniva

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2
Q

Osteoarthritis

What is it?
When does it get worse?
Symptoms?
Heberdon vs Bouchard nodes

Meds/ Treatment:

A

Loss of articular cartilage –> inflammation

Worse at night:
Crepitance, joint deformity, decreased mobility

-Heberdon nodes: Swell DISTAL interphalangeal joint
-Bouchard nodes: Swell PROXIMAL interphalangeal joints

Meds:
NSAIDS, COX2 (Celecoxib), Steroids at joint (intra-articular therapy), chondroprotective agents

Acu, weight loss, OT, TENS

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3
Q

Rheumatoid Arthritis
What is it?
Symptoms?
When is it worse?

What labs are elevated? (4)

A

Systemic inflammation
–> Destroy bone, cartilage, joint
–>Wrist/metacarpophalangeal joints + multiple joints

Symptoms:
Subcutaneous rheumatoid nodules
–>Morning stiffness

What labs are elevated?
-Rheumatoid factor
-Anti-immunoglobulin anti-body
-C-reactive protein
-Erythrocyte sedimentation rate

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4
Q

Rheumatoid arthritis anesthesia considerations

Airway:
Cervical spine:
Atlantoaxial subluxation symptoms?

Pulmonary?

A

Airway:
-Limited TMJ
-Narrow glottic opening
-Cricoartytenoid arthritis

Cervical spine:
-C1 Atlantoaxial instability
-Impingement on C-spine/medulla
-Vertebral artery occlusion

Atlantoaxial subluxation symptoms?
-Headache
-Neck pain
-UE/LE parasthesia with movement
-Bladder/bowel dysfunction
–> to do: X-ray, eval c-spine function

Pulmonary:
- Interstital fibrosis
-Restrictive ventilation pattern

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5
Q

Rheumatoid Arthritis Anesthesia Consideration:

Eyes:
Cardiac:
GI:
Renal:

A

Eyes: Sjogren syndrome

Cardiac:
-Vasculitis/ Vascular disease
-Peri-carditis/ Cardiac tamponade

GI:
-Gastric ulcers (NSAIDS)

Renal insuffieciency

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6
Q

Pre-op Considerations

General ortho repair?
Pelvic fractures?
Long bone fractures?

A

Ortho repair –>
-Bleed/shock
-Fat emboli
-Full stomach

Pelvic fractures –> iliac artery–>
-Retroperitoneal space bleeding

Long bone fracture –> bone marrow fat emboli into venous –> resp thrombus

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7
Q

Pre-op Ortho cardiac and respiratory considerations:

Cardiac:
Target HR?
Meds to consider?

A

Cardiac:
-Continue beta-blockers
-Initiate beta blocker if high risk
-Target HR <80

Consider if taking:
-BP meds
-Opioids/NSAIDS
-Anti-coagulation

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8
Q

Age-related respiratory changes:

1.)
2.)
3.)

A

1.) Progressive decreased PaO2
2.) Increased closing volume
3.) FEV1 decrease of 10% for each decade

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9
Q

Benefits of regional anesthesia over general anesthesia

A

LESS OF:
-DVT/PE
-Blood loss
-Respiratory complications
-Death

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10
Q

Fat embolism Syndrome (FES)

Symptoms present in ___ hrs.
Minor symptoms??
Major symptoms??

Labs:

A

12-72 hours
Minor Symptoms:
-Fever >100.4F
-HR> 120
-Jaundice/ Renal changes

**DYSPNEA
**CONFUSION
**PETECHIAE

LABS
-Fat macroglobulienemia
-Anemia and thrombocytopenia
-^SED rate
–> Male : 0-22 mm/hr (normal)
–> Female: 0-29 mm/hr (normal)

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11
Q

Patho of fat emboli

Resp impact of fat emboli?
Neuro?
Skin?

A

1.) Fat emboli –> Obstruct end organ capillaries
2.) –> fat metab to FREE FATTY ACIDS
3.) –> Systemic inflammatory response
4.) -Cytokines/ inflammatory invasion

RESP:
-Pulmonary endothelial injury
-Pulmonary edema
-ARDS (<10% cases)
-Mild hypoxemia
-Bilateral alveolar infiltrates

NEURO:
-Drowsy, confused, coma

SKIN:
-Petechial rash to mouth, eyes, chest skin folds, neck, axilla

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12
Q

Treatment for Fat emboli:

How long until symptoms resolve?

A

Heparin IV
NO N2O
FiO2= 100%

Aggressive resp/circulatory resuscitation. Decrease stress response

Resolves in 3-7 days

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13
Q

Fat emboli common in ____ surgeries? (2)

What do fractures release?

A

Pelvic fractures
Femoral fractures

Long bone trauma –> release fat droplets into venous system

Fracture: release mediators affecting solubility of lipids in circulation

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14
Q

DVT/ PE RISK FACTORS:

What kinds of surgery?
Length of surgery?
Immobile how long?
Size/Age?

How common?
Treatment?

A

40-80% without prophylaxis

Types of surgery:
HIP, TKA, Lower extremity trauma
-Surgery > 30 mins
-Immobile: >4 days
-Tourniquet use

Treatment:
-Prophylaxis/ SCD/TED/ Ambulate
-Reduce venous stasis/ augment limb blood flow
-PERI-OP anti-coagulation

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15
Q

For DVT, note if pt are taking these meds.

A

-Anti-platelet agents
-Thrombolytics
-Fonaparinux
-Direct thrombin inhibitors
-Therapeutic LMWH

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16
Q

Thromboprophylaxis for DVT:

LMWH initiation:
LMWH: 1x/day
LMWH: 2x/day
Warfarin

A

LMWH initiation: IV/SQ heparin 12 hrs pre-op OR 12 hrs post-op

LMWH: 1x/day
–> Neuraxial ok to do 10-12hrs after previous dose
–> Delay next dose 4 hrs

LMWH: 2x/day
–> Neuraxial catheter NOT OK
–>Remove 2hrs+ before 1st dose

Warfarin:
-Neuaxial anesthetic OK if INR </= 1.5

17
Q

Effects of neuraxial anesthetic?

Blood flow:
Inflammation:
Platelet:

A

*Increased lower extremity venous blood flow d/t sympathectomy

*Systemic anti-inflammatory properties of local anesthetics

*Decreased platelet reactivity

18
Q
  • Tranexamic Acid (TXA)

Dose? MAX DOSE?
When to admin?

Frequently used in ____ & ____?

Benefits?
Cons:

A

DOSE IV: 10, 15, 30 mg/kg
(MAX 2.5g);

-All routes effective (oral/IV/Topical)

  • Admin before incision
  • Frequently used in TKA and THA

Decreased blood transfusion needed

CONS
* Risk of VTE? MI/ CVA/TIA?
* Many post-op CV complication related anemia and blood transfusion

Single vs repeated dose?

19
Q

Tourniquet (Pneumatic)

Benefits ?

-When does tourniquet pain begin after ___ mins?
-What to do about Pain?
-Symptoms of the pain?
-Max time to inflate?

A
  • Decrease intraop EBL
  • Provides bloodless field

*Tourniquet Pain begins after 45 mins: Regional Anesthesia supplement
–> Pain: ^HR/^BP/diaphoresis related to regression of neuaxial block. Unmyelinated C fibers firing

MAX time: 3 hrs/180 mins
–>Generally not to exceed 2 hrs bc of Nerve damage
–> deflate 20-30 mins to allow for reperfusion

20
Q

Tourniquent (Pneumatic) Inflation

How do you apply it?
How much pressure do you inflate?

A

*Apply over smooth padding

*Exsanguination with Esmarch®
–> Increase blood volume into central circulation

Thighs: ~100 mmHg >SBP
(~300 mmHg)

Arms: ~50 mmHg >SBP
(~250 mmHg)

21
Q

How to use double tourniquet?

A

-Inflate proximal
-Deflate distal

22
Q

Negative effects after deflating pneumatic tourniquet:

BP?
HR?
CVP?
Temp?

Minute ventilation?
Pain?

Acid/base?
K+?
CO2?

A

BP? Hypotension
HR? Increase
CVP? Decrease
Temp? Decrease

Minute ventilation? Increase
Pain? Relieved

Acid/base?
K+?
CO2?
* Metabolic acidosis
* Hyperkalemia
* Hypercarbia
* Transient lactic acidosis
* Transient hypercarbia..

23
Q

ABCD’s of TRAUMA ANESTHESIA

MILS Manual In-Line Stabilization

A

Need 3 CRNAs
1 head, 1 shoulder, 1 intubate

DO NOT EXTEND NECK IN TRAUMA
-NO jaw thrust
-NO chin lift
-NO head tilt

OK:
-Cricoid pressure/ Sellick Maneuver
-Apneic ventilation (boyle’s law)
-Modified RSI (Ketamine/etom/ succ/roc)

Direct laryngoscopy after 3 attempts –> Combitube or LMA