Wednesday, November 25, 2009

Pesonality D/O (PD)

To be a PD, a pattern of behavior must affect cognition, affectivity, interpersonal functioning & impulse control; it must clinically cause distress and/or functional impairment and have started at adolescence or early adulthood.
Cluster A:Odd&Eccentric (Accusatory, Alone, Awkward)
Paranoid-irrational fears, jealousy; projection is defense mechanism
Schizoid-solitary, indifferent, no psychosis; fantasy is defense
Schizotypal-psychosis (ideas of refernce, magical thinking)
Cluster B:Dramatic (Borderline, Bad, Beautiful*, Babe*; *=in mind only)
Antisocial-impulsive, reckless, non-conformative; act out
Histrionic-shallow&suggestive; repress/dissociate
Narcissistic-self-important; intellectualize, distort
Borderline-mood swings, extreme avoidance of abandonment; splitting
Cluster C:Anxious (Cowardly, Controlling, Clingy)
Avoidant-"inferiority complex" but w/ desire for relation
OCPD-egosyntonic version of OCD
Dependent-exaggerated fear of loniness, low self esteem; regression, somatization

Tx=DBT if destructive, serotonin for impulses



Saturday, November 21, 2009

DNA viruses Her HAPPy Pox

HERpes, Hepadna, Adeno, Papova, Parvo, Pox
APP have nucleocap, H,H&Pox have envelopes (herpes env is from nuclear env)
All double stranded except the one that "pleads the 5th" (Parvo/erythema infectiosum); all icosahedral capsid and replicate in nucleus except Pox (in a box w/ own DNAdep-RNApolymerase).
Herpesviruses-latent in-dzs
HSV1-trigem-mainly oral herpes
HSV2-sacral DRG-mainly genital herpes
VZV-thoracolumbar DRG-chicken pox, shingles
EBV-Bcells-infectious mono, Burkitt's lymphoma, nasopharyngeal CA
CMV-leukocytes(macrophages)-cytomegalic inclusion dz, heterophil- mono, NO pharyngitis
HHV6-Tcells-roseola(6th dz) Rash On Stomach & fEver (the fever comes 1st)
HHV8-unknown-8th dz j/k Kaposi sarcoma. 8-kap!

Friday, November 20, 2009

Seps in embryology: Zygote to Blastocyst

Zygote (zygo in greek means "joined" or "union") w/ Zona pellucida; divides @ 1 day
Morula ("Mor" rhymes with "four," here there are 4^2 cells), cavitation starts here
Trophoblast - cells begin secreting fluid into the morula ("Troph" means nourishment [atrophy=no nourishment]); not totipotent as trophoblast
Blastocoel=fluid cavity in trophoblast, Zona pellucida begins being "blast"ed away
Blastocyst=Trophoblast+Blastocoel+inner cell mass; pre-implantation state; ~5 days after fertilization; 70-100 cells; IVF possible from day 2 to now
According to wikipedia, toxin exposure up to 2-3 weeks results in miscarriage; after that toxin exposure causes malformations

Thursday, November 19, 2009

Neuro viruses

Herpes Simplex-dorsal root/sensory neuron->localized blisters/cold sores
Herpes Zoster-dorsal root/sensory neuron->shingles (Think "Zoster-brand shingles")
Rabies-retrograde axonal transport (sensory & autonomic nerves affected--hence hypersalivation)
Polio-anterior (ventral) root/motor neuron->paralysis
Other Enteroviruses-hematogenous, cross BBB->meningitis, encephalitis (esp Coxsackie)
And Arboviruses cause encephalitis

Wednesday, November 18, 2009

PAIN fibers cross in the sPAINal cord; vibration, touch, pressure cross in medulla

Tuesday, November 17, 2009

Roseola, Rubeola, Rubella, etc

ROSEola (6th dz) from HHV-6 = Rash On Stomach ~3 days after high fEver
Rubeola (Measles) = Constable (Koplik) Measle has Ruby-red eyes w/ rash head (1st) to toe (last)
Rubella = "Little Red" mimicks RUbeola but not as high fever, not as prominent rash, and no Koplik spots despite being called "German Measles" (Koplik sounds German, right?)
Variola = small pox
Varicella = chicken pox, rash mainly on head and trunk

Molluscum contagiosum = "pox pimple"
Exanthem subitum = 6th dz aka roseola
Erythema infectiosum = 5th dz aka slapped cheek dz (don't spread infectiosum by slapping others high-five)
Erythema nodosum = rash on shins, ulcerative colitis (nod and look at your shin)
Erythema multiform = allergic reaction to infection (HSV) or medication (pencillin, sulfas, barbs)

Note: Oatmeal has been scientifically found to reduce itching.

Brachial plexus I/O & injury

C5,6,7->UPPER trunk->MUSCULOcutaneous (think upper trunk helps you show-UP your MUSCLes [supinate forearm and elbow flex--how else do you show your big guns?])
C7->middle trunk->Radial, Axillary, and Median (remember Radial injury=wRist dRop [posterior cord])
C8,T1->lower trunk->Ulnar (UL=LOW backwards and my U's look like C's for Claw hand)

Radial N injury doesn't sound Profundly Humerous (profunda brachial A near Radial N)

Monday, November 16, 2009

Nerve Injury Mnemonics! Oh yeah!

Nerve damaged-Resulting loss/problem
Radial Nerve-wRist dRop & doRsal sensation
Ulnar-Claw hand w/ pinky and palm sensation (my U's look like C's sometimes, so this works in my mind)
Median-Me Done with this post (thumbs up![no thumb opposition])