225 results
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
, FXI, FIX, FVIII ... FVIII antibody ... , FVII, FIX, FX ... production Fll, FV, FVII ... Causes #diagnosis #differential
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... , FVII, FIX, FX ... production Fll, FV, FVII ... , FVII, FIX, FX) ... Causes #diagnosis #differential
Types of Facial Paralysis - Peripheral vs Central Lesions

Facial weakness or paralysis may result either from
) a peripheral lesion ... of CN VII, the ... (2 ) a central lesion ... of CN VII, exemplified ... #CNVII #CN7 #Peripheral
CNS Ring-Enhancing Lesions - Differential Diagnosis
 • Infections: Cerebral abscess (bacterial, fungal, parasitic), Neurocysticercosis, Tuberculoma, Cerebral
CNS Ring-Enhancing ... Lesions - Differential ... usually solitary lesion ... StanfordChiefs #CNS ... Enhancing #Lesions #Differential
Causes of Orthopnea - Differential Diagnosis Framework

 • Fear and Anxiety
 • Pleural Effusion
 • Ascites
of Orthopnea - Differential ... manipulation - CNS ... lesion: ALS, MS ... Polio - PNS lesion ... #Orthopnea #Differential
Cranial Nerve Nuclei - Cross Sectional Anatomy
CN III - Oculomotor Nerve
CN IV - Trochlear Nerve
CN V
Sectional Anatomy CN ... Trochlear Nerve CN ... Abducens Nerve CN ... VII - Facial Nerve ... Nerve CN IX -
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
CNS Ring-Enhancing ... + toxo IgG • CNS ... 30% present w/ CNS ... aspergillus Solitary Lesion ... Lesions #Brain #differential
Cardiac Arrest - H's and T's

HYPOVOLEMIA 
HYPOXEMIA 
HYPERKALEMIA 
HYPOKALEMIA 
H+ EXCESS
HYPOTHERMIA 

TENSION PNEUMOTHORAX 
TAMPONADE - CARDIAC
HYPOTHERMIA TENSION ... TOXINS #ACLS #Differential
CNS Ring-Enhancing Lesions - Differential Diagnosis Framework

Ring Completeness
 • Incomplete: Demyelinating Disease
 • Complete (MAGIC):
CNS Ring-Enhancing ... Lesions - Differential ... valeroldan23 #CNS ... Enhancing #Lesions #Differential
“H’s & T’s“ - The reversible causes of Cardiac Arrest 
Hypovolemia, Hypoxia/Hypoxemia, Hydrogen Ion Excess (Acidosis),
Cardiac), Toxins, Tension ... #HsTs #acls #differential