Musculoskeletal Diseases (Exam II) Flashcards
What is the pathophysiology of scleroderma?
- Inflammation and Autoimmune disease w/ progressive tissue fibrosis/sclerosis and vascular injury.
What mnemonic guides the main symptoms associated with scleroderma?
Expound on the mnemonic.
- Calcinosis
- Raynaud’s
- Esophageal reflux
- Sclerodactyly
- Telangiectasia’s
What skin and musculoskeletal abnormalities might be seen with scleroderma?
- Taut skin
- Contractures & myopathy
What can happen to nerves with scleroderma?
Compression
What does xerostomia mean?
Dry mouth
What treatments are used for scleroderma?
- Symptoms alleviation
- ACE-inhibitors
- Digoxin
- Steroids
What airway and pulmonary considerations exists for scleroderma?
- Pulmonary fibrosis (↓ compliance)
- Decreased ROM for airway
What CV considerations exists for scleroderma?
- Possible systemic/pulm HTN
- Dysrhythmias
- Small artery vasospasm’s
- CHF
- pericarditis
- pericardial effusion w/ or w/o tamponade
What GI symptoms exist for scleroderma?
- Xerostomia
- GI tract fibrosis
- Poor dentition
- GERD
What dose of metoclopramide would be utilized for GI tract fibrosis from scleroderma?
Trick question. Metoclopramide would not work in this scenario.
What scleroderma anesthesia management considerations are there?
What is Duchenne’s Muscular Dystrophy (DMD)?
What initial symptoms are present at 2-5 years of age?
- X-linked dystrophin disorder resulting in muscle atrophy.
- (Ages 2-5) = waddling gait, frequent falling, can’t climb stairs, Gower’s sign.
What s/s are seen with DMD?
List:
CNS
Musculoskeletal
CV
Pulm
GI
- CNS - intellectual disability
- MS - kyphosis, muscle atrophy, ↑ CK 20-100x
- CV - ↑ HR, cardiomyopathy (age 18), short PR & tall R wave/deep Q wave
- Pulm - weakened respiratory muscles and weak cough, OSA, pneumonia
- GI - hypomotility & gastroparesis
What are the anesthetic concerns and interventions relevant to DMD patients?
- Airway
- Pulmonary
- CV
- GI
- Airway - weak laryngeal reflexes & cough
- Pulm - weakened muscles
- CV - Get pre-op EKG & echo
- GI - delayed gastric emptying
What drug should be avoided with DMD patients?
- Succinylcholine (MH, Rhabdo & ↑K⁺, cardiac arrest)
- Halogenated anesthetics “all of our gasses”
use NDMBs
What type of anesthesia is prefereable for a DMD patient?
Regional (vs GA)
Why might one use less volatile gasses with DMD patients?
- DMD patients have ↑risk of malignant hyperthermia.
Ensure you have Dantrolene
What is the pathophysiology of myasthenia gravis?
- ↓ function of NMJ post-synaptic ACh receptors.
αlpha sub-units of ACh receptor are bound by antibodies.
What organ is linked with the production of anti-ACh antibodies?
- Thymus
Which condition is characterized by partial recovery with rest?
Myasthenia Gravis
What test is used to diagnose myasthenia gravis?
Edrophonium/Tensilon Test
- 1-2 mg IVP
- Myasthenia symptoms improve with injection = (+) test
What signs/symptoms might be seen with myasthenia gravis?
- Ptosis & diplopia
- Dysphagia & dysarthria
- Muscle weakness
Differentiate Myasthenic Crisis and Cholinergic Crisis.
- Myasthenic Crisis - Insufficient drug therapy and resulting respiratory failure.
- Cholinergic Crisis - too much -stigmine drug = SLUDGE-M symptoms.