Musculoskeletal Flashcards
(73 cards)
CREST are characteristics of which disease process?
Scleroderma
What does CREST stand for?
C- Calcinosis, calcium deposits in skin
R- Raynaud’s
E- Esophageal dysfunction/acid reflux
S- Sclerodactyly, thickening and tight skin on fingers and hands
T- Telangiectasias, dilation of capillaries looks like red freckles
What are the 3 main forms of scleroderma?
Localized- involvement of the skin of face, trunk, and distal limbs
Limited cutaneous system sclerosis - usually combination of CREST
Diffuse cutaneous system sclerosis- rapidly progressive disease with involvement of multiple organ systems
Signs you may see in patient with undiagnosed pulmonary HTN
JVD, enlarged RV on xray
What drug does not improve intestinal hypomotility in scleroderma?
metoclopramide (reglan)
Corticosteroid use in scleroderma treatment can lead to what?
Renal crisis- treatment ACE-i
What drugs improve intestinal hypomotility in scleroderma?
Somatostatin analogues - octreotide
What are potential airway concerns in scleroderma?
poor mandibular motion, small mouth opening, limited neck ROM, oral bleeding/friable tissue
What are potential anesthesia CV concerns with scleroderma
difficult IV/arterial line access
What are potential pulmonary concerns in patients with scleroderma ?
Decreased pulmonary compliance and reserve, avoid increasing PVR (hypoxia, hypercarbia, acidosis).
Which disease process is 3x more likely to have VTE
scleroderma
What is the stress dose for steroids?
100mg q6hrs
What is the function of dystrophin?
Large protein that plays a major role in stabilization of the muscle membrane and signaling between the cytoskeleton and extracellular matrix.
What is the cause of Duchenne Muscular Dystrophy (DMD)?
mutation in the dystrophin gene
What age is DMD commonly seen and what are the signs?
2-5year old (primarily affects boys)
initial symptoms: waddling gait, frequent falling, difficulty climbing
Dystrophin is a gene located on which chromosome? dominant or recessive?
X, recessive
DMD is characterized by
muscle wasting
What lab value would be abnormal in DMD?
serum CK likely 20-100x higher than normal
What EKG characteristics would been seen in patient with DMD?
Short PR interval, sinus tachycardia, V1- tall R waves, limb leads deep Q waves
What pulmonary complications are seen in DMD?
weakened respiratory muscles and cough, loss of pulmonary reserve, increased secretions (aspiration risk), OSA, pulmonary HTN
Which medications should be avoided during anesthesia of patient with DMD?
neuromuscular blockers, volatile anesthetics, precedex
Which medication works well for sedation of children?
Ketamine - can be given intranasally
What is the ideal form of anesthesia choice in patients with DMD
regional anesthesia - avoids many risks of GA, provides postop analgesia, and facilitates chest physiotherapy
Myasthenia gravis is characterized by
exacerbations and remissions