Musculoskeletal (Exam 2) Flashcards
What is Scleoderma?
- Inflammation and autoimmunity
- Vascular injury with vascular obliteration
- Tissue fibrosis and organ sclerosis
Scleroderma: CREST Syndrome
- Calcinosis: Calcium deposits in the skin
- Raynauds Phenomenon:
- Esopheal Dysfunction
- Sclerodactyly : thickening and tightening of skin around fingers
- Telangiectasias: dilation of capillaries
Symptoms of Scleroderma: Skin
- mild thickening
- diffuse non-pitting edema
- taut skin
Symptoms of Scleroderma: MS
- Limited mobility/contractures
- skeletal muscle myopathy
- plasma CK increased
- mild inflammatory arthritis
Symptoms of Scleroderma: Nervous System
- Nerve compression
- trigeminal neuralgia
Symptoms of Scleroderma: CV
- Systemic and Pulmonary HTN
- dysrhythmias
- vasospasms in small arteries of fingers
- CHF
- Pericarditis
- Pericardial effussion
Symptoms of Scleroderma: Pulmonary
- Diffuse interstitial Pulmonary Fibrosis
- Decreased pulmonary compliance
- arterial hypoxemia
Symptoms of Scleroderma: Renal
- Decreased Renal Blood Flow
- Systemic HTN
Symptoms of Scleroderma: GI
- Xerostomia
- poor dentition
- fibrosis of GI tract
- Reflux
- dysphagia
- malabsorption syndrome
* Reglan does not WORK
Scleroderma Treatment
- Alleviating Symptoms
- ACE - Inhibitors –> Renal Protection
- CCB –> Raynauds
- PPIs –> Reflux
- Pulmonary HTN –> sildanefil
Tachycardia and Bradycardia are bad
Scleroderma Anesthesia: Airway Concerns
- Mandibular motion
- Small mouth opening
- Neck ROM
- Oral bleeding
Scleroderma Anesthesia: CV concerns
- IV/arterial line access difficulty
- contracted intravascular volume
Scleroderma Anesthesia: Pulmonary Concerns
- Decreased Pulmonary Compliance and Reserve
- Avoid increased PVR (hypoxia, hypercarbia, acidosis)
Scleroderma Anesthesia: GI Concerns
- Aspiration Risk
Scleroderma Anesthesia Management: Other concerns
- Eyes: Corneal abrasion
- Regional anesthesia
- keep warm
- VTE prophylaxis
- Postioning
* Pulse OX difficulties
What is 3x more common in Scleroderma patients than the rest of the population?
- VTE (Venous Thromboembolism)
Pseudohypertrophy Muscular Dystrophy: Duchenne Muscular Dystrophy (DMD)
- Affects the Proximal skeletal muscle groups of the pelvic girdle
- Mutation in the dystrophin gene
- Fatty infiltration = pseudohypertrophic
- 2-5 y/o males
- X chromsome link recessive trait
What are the initial symptoms for Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD)?
- Waddling gait
- frequent falls
- difficulty climibing stairs
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): Timeline
- Affects the Proximal skeletal muscles of the pelvic girdle
- Wheelchair bound by 8-10
- Deterioration in muscle strength
- Death by 20 -25 y/r
- Normally die from CHF and/or pneumonia
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): CNS
- Intellectual disability
- avoid NMB, low gag reflex, high asp risk
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): MS
- Kyphoscoliosis
- skeletal muscle atrophy –long bone fractures
- serum CK 20 -100x normal
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): Pulmonary
- Weakened respiratory muscle and cough
- OSA
- poor reserve
- d/t weakening of the diaphragm
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): GI
- Hypomotility
- Gastroparesis — prolonged NPO times
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): CV
- Sinus tachycardia
- cardiomyopathy
- EKG abnormlaties
- Short PR intervals
- tall QRS
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): Anesthesia Concerns
- Airway: weak laryngeal reflexes and cough
- Pulmonary: weakened muscles
- CV: Pre-Op EKG and/or ECHO based on severity
- GI: Delayed gastric emptying
Pseudohypertrophy/ Duchenne Muscular Dystrophy (DMD): Anesthesia Management
* Avoid succinylcholine
* Pharnygeal and respiratory muscle weakness
* Rhabdomyolysis w/ administration of halogenated anesthetics
* MH – increased incidence (Dantrolene)
* Regional > GA
Myasthenia Gravis
- Chronic autoimmune disorder
- NMJ – Decreased functional post -synaptic ACH receptor
- Muscle weakness w/ rapid exhaustion of voluntary muscle
- Parial recovery with rest
- ACh receptor-binding antibodies and thymus abnormalities
Myasthenia Gravis: S/S
- Ptosis, diplopia and dysphagia
- Dysarthria (difficulty speaking)
- difficulty handling saliva
- Isolated respiratory failure
- Arm, leg, or trunk muscle weakness
- Myocarditis
- Autoimmune disease associated
Causes and symptoms of Myasthenic Crisis
- Drug resistance or insufficent drug therapy
- s/s: severe muscle weakness and respiratory failure
* WILL NEED INTUBATED
Causes and symptoms of Cholinergic Crisis
- Excessive anticholinesterase treatment
- Can be caused by Neostigmine – give Glycopylorated w/Neostigmine
- S/S: Muscarinic side effects – profound muscle weakness, salivation, miosis, bradycardia, diarrhea, abdominal pain
Edrophonium/Tensilon Test
- 1-2 mg IV
- Improves = myasthenic crisis
- Worsens = Cholinergic Crisis
Myasthenia Gravis Treatment: Anticholinesterase
- First line treatment
- Pyridostigmine >Neostigmine
Myasthenia Gravis: Thymectomy
- Induces remission
- reduces use of immunosuppresives
- reduces ACh receptor antibody levels
- Full benefit delayed
Myasthenia Gravis: Immunosuppression medications
* Corticosteroids – most common and most effective
* Azathioprine
* cyclosporine
* mycophenolate
Myasthenia Gravis: Immunotherapy
- Plasmapheresis – removes antibodies from circulation
- Immunoglobulin – temporary effect; no affect on circulating ACh
Myasthenia Gravis: Anesthesia Management
- Aspiration Risk
- Weakened Pulmonary effort
- Marked sensitivity to nondepolarizing muscle relaxant
- resistance to succinylcholine
- intermediate - acting muscle relaxant
- Intubated without NMBD
Give ROC if you have to RSI
Osteoarthritis
- Degenerative process affecting articular cartilage
- Minimal Inflammation
- Joint trauma
- Pain present with motion, relieve by rest
Joint Trauma associated wtih Osteoarthritis
- Biomechanical Stresses
- Joint injury
- abnormal joint loading
- neuropathy
- ligament injury
- muscle astrophy
- obesity
What is the most common joint disease, leading chronic diseases of the elderly and a major cause of disability?
Osteoarthritis
Name (6) Osteoarthritis signs/symptoms?
- Weight bearing and distal interphalangeal joints
- Herberden nodes– distal interphalangeal joints
- Degenerative Disease – vertebral bodies and intervertebral disks
- Protusion of the nuscleus pulposus
- Compression of nerve roots
- Middle to lower c-spine and l-spine
Osteoarthritis Treatment: Non medications
- PT and exercise
- Maintaining muscle function
- Pain Relief
- Joint Replacement surgery
Osteroarthritis: Anesthesia Management
- Airway
- Limited ROM
Rheumatoid Arthritis
- Autoimmune- mediated, systemic inflammatory disease
- Proximal interphalangeal and metacarpophalangeal joints
- Rheumatoid nodules at pressure points
- Rheumatoid factor
Does Rheumatoid Arthritis occur more in Males or Females?
- Females
- 2-3x more
Rheumatoid Arthritis: S/S overview
- Single or multiple joints
- painful synovial inflammation, swelling, and increased fluid
- Morning stiffness
- symmetrical distribution of several joints
- Fusiform swelling
- Synovitis of temporomandibular joint
- Affects nearly all joints
What joints does Rheumatoid Arthritis not affect?
- Thoracic spine
- lumbarsacral spine
Rheumatoid Arthritis: Atlantoaxia Subluxation
- Odontoid process protrudes into the foramen magnum.
- Pressure on the spinal cord or impairs vertebral artery blood flow. —-> increase risk of stroke, bowel/bladder incontinence , paraplegia/paralysis
Rheumatoid Arthritis: Cricoarytenoid Arthritis
- Acute -hoarsness, dysnea, and stridor w/ tenderness over larynx
- swelling and redness of arytenoids
- Chronic – asymptomatic or variable degrees of hoarseness, dyspnea and upper airway obstruction
Rheumatoid Arthritis: NM
- Weakened Skeletal muscle– adjacent to joints w/ active synovitis and neuropathy
- AVOID NEUROMUSCLULAR BLOCKERS
- Peripheral neuropathies
Rheumatoid Arthritis: CV symptoms
- Pericarditis
- accelerated coronary artherosclerosis
- High risk for interoperative MI
Rheumatoid Arthritis: Pulmonary symptoms
- Restricitive Lung changes (decrease in VC, lung volumes)
- pleural effussion
- Rheumatoid nodules can develop
Rheumatoid Arthritis: Hematology symptoms
- Anemia
- neutropenia
- elevated platelets
What is Keratoconjunctivitis sicca and xerostomia? What is is associated?
- Sjogens Syndrome
- Rheumatoid Arthritis
Rheumatoid Arthritis: Treatments
- PT/OT
- NSAIDs
- Corticosteroids
- DMARDS
- Tumor Necrosis Factor inhibitors (TNF) and interleukin (IL-1) inhibitors
- Surgery
Rheumatoid Arthritis: NSAIDS
- Decrease joint swelling, relieve stiffness, provide analgesia
- COX-1 and COX-2 inhibitors
Rheumatoid Arthritis: Corticosteroids
- Decrease joint swelling, pain and morning stiffness
Rheumatoid Arthritis: DMARDS
- Disease modifying anti-rheumatic drugs
- Halt or slow disease progression
- Methotrexate
Rheumatoid Arthritis: Tumor Necrosis Factor and Interleukin Inhibitors
- TNF-alpha > DMARDS
- IL-1 inhibitors – slower onset and less effective
Rheumatoid Arthritis: Surgery
- Intractable pain, impairment of joint function, joint stabilization
- Total replacement
- Can help with symptoms, but not cure
Rheumatoid Arthritis: Anesthesia Management
- Airway
* atlantoaxial subluxation
* TMJ limitation
* Cricoarytenoids joints - Severe Rheumatoid lung disease
- Protect eyes
- Stress Dose – corticosteroids
Systemic Lupus Erythematosus definition
- Multisystem Chronic Inflammatory
- Antinuclear antibody production
Systemic Lupus: Typical Manifestation
- Antinuclear antibodies
- Characteristic malar rash – butterfly rash
- Thrombocytopenia
- Serositis
- Nephritis
Who is the most at risk for Lupus?
- Young women and African Americans: 15-40 y/o
- Pregnancy w/ nephritis and HTN = risk of exacerbation and/or poor fetal outcomes
What drugs can induce Lupus?
- Hydralazine
- Procainamide
What is the most commonly assiciated rash with Lupus, beside the butterfly rash?
- Aculopapular rash
- Areas that are exposed to sunlight
Systemic Lupus Erythematus: S/S
- Polyarthritis and dermatitis
- Symmetrical arthritis – no spinal involvement; Avascular nectrosis of femoral head or condyle
Systemic Lupus Erythematus: CNS
- Cognitive Dysfunction
- psychological changes
- anxiety, depression, migraines, fibromyalgia
Systemic Lupus Erythematus: CV
- Pericarditis
- Coronary artherosclerosis
- Raynaulds
Systemic Lupus Erythematus: Pulmonary
- Lupus pneumonia
- restrictive lung disease
- vanishing lung syndrome
Systemic Lupus Erythematus: Renal
- Glomerulonephritis
- Decreased GFR
- hematuria
Systemic Lupus Erythematus: GI/Liver
- ABD pain
- pancreatitis
- elevated liver enzymes
Systemic Lupus Erythematus: NM
- Skeletal muscle weakness
Systemic Lupus Erythematus: Hematology
- Thromboembolism
- Thrombocytopenia
- hemolytic anemia
ASA or plavix d/t high risk
Systemic Lupus Erythematus: Skin symptoms
- Butterfly-shaped malar rash
- discoid lesions
- alopecia
Systemic Lupus Erythematus: Treatment
- NSAIDs or ASA
- Anti-malaria –> hydrocholoquine and quinacrine
- Corticosteroids
- Immunosuppressants (better than steroids) –> Methotrexate, azathiprine
Systemic Lupus Erythematus: Anesthesia Management
- Stress dose of Corticosteroids
- Airway: recurrent laryngeal nerve palsy, cricoarytenoid athritis
- Based on mainfestation and organ dysfunction
Malignant Hyperthermia Overview
- Anesthesia Specific
- Hypermetabolic syndrome
- Genetic Mutation – Ryanadine Receptors (RYR1) and dihydropyridine receptors
-
Exposure to Inhaled VA and succinylcholine
* 50% mortality - Family history
- Uncontrolled elevation of sarcoplasmic calcium
- Sustained activation of muscle contractions
- Rhabdomylosis
Malignant Hyperthermia: Non-triggering Agents
Malignant Hyperthermia: Early and Late s/s
Malignant Hyperthermia: Treatment
- D/C all triggering gas/drugs
- Hyperventilation with 100% O2 @ 10L/min
- Change breathing circuit and soda lime
- Dantrolene
- Treat Arrythmias
- Monitor urine output
What medication do you use to treat Malignant Hyperthermia? How is it prepared?
- Dantrolene
- 20 mg + 3G mannitol
- mix w; 60 mL sterile water
- Intial dose 2.5 mg/kg
- Max Upper limit: 10 mg/kg
Malignant Hyperthermia: Post-Op
- Transfer to ICU 24 - 48 hours
- Report to MH registery
- MH testing for pt and family members – muscle biopsy
Why do we use a Stellate Ganglion Block?
* Prevents SNS surges
* i.e: Recurrent chest pain, sceroderma, long COVID, chronic pain syndrome, hyperhydrosis.
Homer’s Syndrome
- Partial ptosis (drooping or falling of the upper eyelid)
- Miosis (constricted pupil)
- Facial anhidrosis (absence of sweating) due to a disruption in the sympathetic nerve supply
- *** Phrenic Nerve Blockade Association
- Caused by Stellate Ganglion Blockade
What are the 5 parts of the Brachial Plexus?
- Root
- trunk
- divisions
- cords and branches
Read That Damn Cadaver Book
Innervation of the Hand
Name the 1st sign of MH
- ETCO2
After your ETCO2 increases with MH, what other signs will you see?
- HR, BP, then temp
MH Presentation: RAT
- Rigidity
- Acidosis
- temp
Pathogenesis of MH
- genetic predisposition d/t ryanodine receptor gene mutation —-> Excessive calcium accumalation in response to certain anesthetic trigger agents.
- Hypermetabolic state w/ sustained cxn and muscle breakdone (rhabdomyolysis)
Name the Clinical Features of MH
- Onset – after induction
- Hearalding signs: High ETCO2 and tachypnea and RAT (rigdity, acidosis, temp)
(4) diffentials that can mimic MH
CATS
* Catecholamine tremor from phenochromocytoma
* Acute porphyria crisis
* thyrotoxicosis (thyroid storm)
* sepsis
Management of MH
SHADE
* Stop d/c inhaled agent
* heat control w/ IV fluids
* Activated charcoal
* Dantrolene (Rhyanodex)
* Electrolytes