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Back to the "10 Need to Know" series - Drug Therapeutic Target Levels. 

For lithium, target
Therapeutic Target Levels ... lithium, target levels ... vary depending on treatment ... mortality at a higher level
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
by Nerve Root Levels ... Sphincter None #SpinalCord ... Injury #NerveRoots #Levels ... #differential #
Hypocalcemia Laboratory Evaluation

Serum levels of PTH, phosphorus, 25-hydroxyvitamin D, and 1,25-dihydroxyvitamin D can help differentiate between
Evaluation Serum levels ... dihydroxyvitamin D can help differentiate ... Hypocalcemia #Laboratory #Levels ... Endocrinology #Differential
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Diagnosis Adrenal Insufficiency - Algorithm

Step 1) Screening Test: 6-8AM Cortisol Level
 - Early morning cortisol levels
6-8AM Cortisol Level ... morning cortisol levels ... - Levels > 15 ... - Intermediate levels ... Step 3) Differentiate
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
Cord Disorders - Differential ... Pain reported at level ... (1-5 levels below ... #spinal #cord #spinalcord ... diagnosis #neurology #differential
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
function below injury level ... Sensory loss below level ... light touch below level ... motor function, level ... and #Acute #SpinalCord
Incomplete Spinal Cord Syndromes
Anterior Cord Syndrome:
 • Bilateral loss of motor, pain and temperature sensation below
sensation below level ... #Incomplete #SpinalCord
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
Syndromes and Mimics - Differential ... Low Complement Levels ... Normal Complement Levels ... other hemorrhagic fevers ... Syndromes #Mimics #Differential
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
with higher CK levels ... , greater level ... after 2 years of treatment
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
symptoms at the level ... usually 1 to 2 levels ... below the level ... unilateral) #SpinalCord ... syndromes #lesions #differential