Combank Assessment #2 P2 Flashcards
How does PCOS present clinically?
increased LH, decreased FSH, increased testosterone, increased androgens and increased estrogens; manifests clinically with amenorrhea, infertility, obesity and hirsutism
How does PCOS cause infertility?
elevated LH levels and elevated LH:FSH ratio; high levels of LH cause down regulation of the LH receptors at the ovaries this prevents the LH surge needed to trigger ovulation during the menstrual cycle
How is schistosomiasis acquired and how may it present?
exposure to contaminated water; can present with severe itching after exposure to the skin
What is the DOC for shistosomiasis and how does it work?
Praziquantel; causes calcium influx that depolarizes the tough outer tegument of the worm leading to paralysis and death
Mebendazole and albendazole both inhibit?
beta-tubulin polymerization, which inhibits microtubule formation thereby damaging the structural integrity of helminthic parasites
This is an NSAID that closes a PDA
Indomethacin
This is a prostaglandin PGE1 analog used to keep the PDA open
Alprostadil
What are first line medications to treat PTSD?
SSRIs
Transmural inflammation with “creeping fat” is hallmark of which inflammatory bowel disease?
Crohn’s disease
Crypt abscesses (clusters of neutrophils within damaged epithelium) are a distinguishing characteristic of which inflammatory bowel disease?
ulcerative colitis
What is the MOA of Doxepin?
first generation TCA; blocks reuptake of NE and serotonin at the synapse
What is the classic presentation of DiGeorge syndrome?
a triad of conotruncal cardiac abnormalities, hypocalcemia and thymic hypoplasia
What is a well known paraneoplastic syndrome of small cell lung cancer which causes hyponatremia?
SIADH
In what portion of the nephron does ADH act on?
collecting tubule
Polymyalgia rheumatica most commonly presents in what population of patients?
females over the age of 50 years old
How does polymylgia rheumatica present?
causes myalgias and stiffness of the shoulder and hip girdle muscles; commonly associated with giant cell arteritis
What causes panlobular emphysema and how does it present??
involves entire respiratory lobule; occurs in patients with alpha 1 antitrypsin deficiency which leads to destruction of lung elastin
Smoking causes what kind of emphysema?
centrilobular emphysema
What is DIC and what characterizes it?
a complicated d/o that involves both excess bleeding and widespread thrombosis; fibrinogen is decreased while fibrin split products are increased
The ventral posterior medial nucleus of the thalamus receives sensory information from?
face; thalamus then sends this information to the primary sensory cortex
The ventral posterior lateral nucleus of the thalamus receives sensory input from?
the body and projects it to the primary sensory cortex
What should be checked when oral potassium fails to increase serum levels of potassium in a hypokalemic patient?
check for an underlying hypomagnesemia condition; this is b/c magnesium is a cofactor in potassium channel function within the kidney, acting to close channels in the absence of aldosterone, in cases of low serum Mg, these channels can remain open causing potassium wasting
What is Still’s murmur?
a benign pediatric murmur that commonly presents in healthy children 2-8 y.o.; typically heard as a mid-systolic murmur of musical quality between the apex of the heart and left sternal border
Where are indirect inguinal hernias located?
lateral to the inferior epigastric artery
Where are direct inguinal hernias located?
medial to the epigastric artery
Indirect hernias result from?
a patent processus vaginalis – this can lead to formation of a hydrocele
What type of hernia is most common in women and what does it result from?
femoral hernias are most common in women; these result from a defect in the femoral canal
Direct inguinal hernias involve penetration into?
Hesselbach’s Triangle
What is sensitivity?
% of known positives that actually test positive
How do you calculate sensitivity?
true positive / [true positives + false negatives]
How do you calculate specificity?
true negatives / [true negatives + false positives]
Tuberous sclerosis has what inheritance pattern?
autosomal dominant