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55 Cards in this Set
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21 alpha hydroxylase deficiency
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hypotension, decreased cortisol, increased ACTH, increased sex hormones, hyperkalemia--> see female pseudohermaphrodism
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17 alpha hydroxylase deficiency
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super high mineralocorticoids
HTN, hypokalemia, decreased sex levels and decreased cortisol |
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11 beta hydroxylase deficiency
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no cortisol, stimulates an increase in ACTH, so you have a diversion to the androgens--> you see HTN because deoxycorticosterone has mineralocorticoid activity
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Leuprolide, Goserline and Nafarelin
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GnRH mimics
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Ketoconozale
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prevents steroid synthesis, antifungal, but also used for polycystic ovarian disease to prevent hirsutism
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Finasteride
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5 alpha reductase inhibitor, used to prevent conversion of testosterone to DHT, because DHT has a much higher affinity to the testerone receptor
inihibition of this can treat BPH and male pattern baldness |
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Anastrozole
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Aromatase Inhibitors, used to treat breast cancer caused by increased estrogen synthesis
testerone turns into estrogen in the presence of aromatase in the granulosa cells |
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Flutamide and Cytoproterene
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these bind to the testerone receptors on the target cells, preventing testosterone or DHT action
used to treat prostate carcinoma |
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Diagnostic for menopause?
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elevated levels of serum FSH
estrogen synthesis slows, stops in menopause from degenerate ovaries--> no feedback inhibition on FSH later on, LH increases as well |
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Where does progesterone come from for a baby?
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1st trimester, hcG stimulates the corpus luteum to keep producing progesterone
2nd and 3rd trimesters: progesterone from placenta estrogen from the fetal adrenal gland |
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Tell what TRH does
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Stimulates the release of Prolactin and TSH
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Tell me what Prolactin does
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Inhibits GnRH
Dopamine inhibits Prolactin stimulated by TRH |
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What does FSH do?
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stimulates aromatase to convert androstendione into estrogen
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What does LH do?
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stimulates the theca cells to convert cholesterol into androstendione via desmolase
the androstendione can convert into estrogen with the aromatase in the granulosa cell |
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what is structurally similar to hcG?
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FSH, LH and TSH
hcG may stimulate the TSH receptor and cause hyperthyroidism |
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What does Hashimoto's thyroiditis look like?
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Diffuse monocytic infiltrate with lymphocytes and plasma cells; see Hurthle Cells which are follicular epitherlial cells undergoing metaplastic change, they form large oxyphilic cells with granular cytoplasm.
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What do you use to treat vWF deficiency?
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in mild cases where there is still some vWF being made, you treat with DDVAP, to induce endothelial cell to release the vWF.
in women, use OCP |
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Functions of the Sertoli Cells
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Non Germ Cells
secrete Inhibin (to inhibit FSH) secrete Androgen Binding Protein (to maintain testosterone levels) Forms the blood testis barrier Regulate spermatogenesis |
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Spermatogenesis
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begins at puberty, takes 2 months for complete maturation, occurs in the semiferous tubules
sertoli cells support spermatogenesis |
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Secondary Spermatocyte
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2ndary=2n
Haploid Primary spermatocyte is Diploid (4n) |
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Where does estrogen come from?
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the ovary, placenta and blood
estradiol is more potent than estrone> estriol |
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What is the relationship between estrogen and sex hormone binding globulin?
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estrogen increases the hepatic synthesis of transport proteins
so there is an increase in synthesis of sex hormone binding globulins |
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What is desmolase?
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LH secretion stimulates the desmolase to convert cholesterol into androstendione in the Theca Cells
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What maintains lactation?
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Prolactin (also inhibits GnRH secretions, so no FSH and LH stimulation, and antagonise the actions of LH and FSH on the ovaries)
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What is the problem in Klinefelter's Syndrome
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XXY, dysgenesis of seminferous tubules, no inhibin, no feedback inhibition of FSH. Abnormal Leydig formation, leads to increased LH, no testerone, and increased estrogen
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What is female pseudohermaphrodism?
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ovaries are present, but external genitalia is virilized, or ambigous. Excessive and inappropriate exposure to androgenic steroids during early gestation.
Congenital Adrenal Hyperplasia or exogenous androgen administration during pregnancy |
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Male pseudohermaphrodite?
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testes present, but external genitalia is ambigous
androgen insenstivity syndrome (testicular feminization) |
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See high levels of estrogen, testosterone and LH
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Androgen Insensitivity Syndrome
supermodels 46 XY defect in the androgen receptor. Uterine tubes and uterus are generally absent. Develop testes but they are in the labia majora |
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Penis at 12
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5 alpha reductase deficiency
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Preeclampsia
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hypertension, proteinuria and edema
ecclampsia (seizures) if this is seen before 20 weeks, suggests a molar pregnancy may be associated with HELLP (hemolysis, elevated LFTS, and low platelets) |
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What should you give to an ecclamptic woman to treat her symptoms?
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Magnesium Sulfate and Diazepam
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Painful bleeding in the 3rd trimester
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associated with abruptio placenta (premature detachment of placenta from the implantation site)
fetal death, assocaited with DIC increased risk with smoking, cocaine use and HTN |
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Massive bleeding after the delivery?
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Placenta Accreta
defective decidual layer allows the placenta to attach to myometrium. Predisposition with prior C section or inflammation |
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Painless bleeding in ANY trimester
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Placenta Previa-- attachment of placenta to the lower uterine segment-- may occlude the internal os
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Pain without bleeding in a pregant woman
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Ectopic Pregnancy
suspect with an increased hCG and sudden lower abdominal pain mistaken for an appendicitis |
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polyhydraminos
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>1.5--2 Liters of amniotic fluid
associated with esophageal/duodenal atresia, causing an inability to swallow amniotic fluid, and with anencephaly |
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Most common of all tumors in females
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Leiomyoma
benign, smooth muscle tumor, rarely transforms into malignancy Estrogen Sensitive peak occurence at 20-40 years of age may cause bleeding histologically: whorled patterns of smooth muscle bundles |
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Leiomyosarcoma
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bulky irregular shaped tumor with areas of necrosis and hemorrhage, typically arizing de novo
increased incidence in blacks HIGHLY aggresive, with the tendency to recur may protrude from the cervix and bleed |
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vWF deficiency
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will have a prolonged bleeding time and a PTT
vWF is part of factor VIII |
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Fetal Hemoglobin
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alpha 2 and gamma 2
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How do you treat nephrogenic diabetes insipidus?
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thiazides
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What does clostridium look like?
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Gram negative bacillus
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Churg Strauss
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severe asthma, obstructive lung function tests, necrotizing vasculitis, granulomas and vessel infiltration
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When you have hyperkalemia, what should you think about the pH?
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metabolic acidosis
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What hormone levels will you see in polcystic ovarian disease?
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increased LH, decreased FSH and increased testosterone
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stromal breast pathologies
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fibroadenoma and pyllodes tumor
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phyllodes tumor
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massive tumor, mostly benign but may turn malignant
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intraductal papilloma
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most common cause of bloody nipple discharge in women younger than 50
no increased risk for malignancy |
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breast cancer
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genetic base in less than 10% of cases
1 in 8 lifetime risk mean age is 64 initial management of breast mass is fine needle aspiration |
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what do mammographys do?
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screening test for microcalcifications; most often occur in ductal carcinoma in situ and sclerosing adenosis
outer quadrant: axillary nodes inner quadrant: internal mamillary nodes |
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Breast cancer prognoses
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Screen for estrogen and progesterone receptor assays
also screen for S phase (above 5% is bad sign) |
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infiltrating ductal carcinoma
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stellate-shaped scar
this is the worst and most invasive |
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whtat prevents menstrual blood from clotting?
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plasmin
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What causes anovulatory Dysfunctional Uterine Bleeding?
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excess estrogen stimulation relative to progesterone, absent secretory phase of the cycle. Causes endometrial hyperplasia and bleeding
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Acute endometriosis
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most often due to group B strep pathogen-- most often due to a bacterial infection following a delivery or miscarriage
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