Week 3a + 3b Flashcards
(224 cards)
- What are the screening methods for breast cancer?
- What about diagnositc?
- What about biopsy?
- mamogram
- ultrasound, special mammogram views, breast MRI, CT imaging
- FNA (cyst aspiration), ultrasound biopsy (with needle), stereotactic biopsy
seed localization - radioactive releasing seed - used as management
TORCHeS infections
1. T =
2. O =
3. R =
4. C =
5. H =
6. S =
- Toxoplasma
- Other (HIV, Zika, Hep B, Parvo)
- Rubella
- CMV
- Herpes Simplex
- Syphilis
- What are TORCHeS infections?
- TORCH Syndrome refers to infection of a developing fetus or newborn by any of a group of infectious agents
Toxoplasma
1. How does mother get this?
2. How does this get transferred to baby
3. Triad of symptoms
4. When happens when infections occurs in 1st, 2nd, or 3rd trimester?
- mom can get from cat feces or undercooked meat
- transplacental
- Chorioretinitis, Hydrocephalus, Intracranial calcifications
- 1st trimester leads to spontaneous abortion - 2nd and 3rd trimester lead to transfer to baby and sx at birth
HIV
1. How does mother get this?
2. How does this get transferred to baby
3. Symptoms in baby
- Mom can get from sexual contact, needlestick
- Transplacentally
- recurrent infections, chronic diarrhea
Parvovirus B19
1. What happens when mother gets infected during pregnancy
2. How does this get transferred to baby
3. Triad of symptoms
- 80% of women are already exposed so reinfection at pregnancy is not bad + those who have never been exposed if exposed during second can have a high risk of fetal death
- Transplacentally
- Kills RBC –> leads to hydrops fetalis: abnormal accumulation of fluids and death is possible. Also see slapped cheek rash, aplastic crisis
Rubella
1. How does mother get this?
2. How does this get transferred to baby
3. Triad of Symptoms
- Respiratory Droplets (humans are only resevoir)
- Transplacental
- Think I (eye) heart Ruby (rubella) (ear)rings: Eye cataracts, ear deafness, congenital heart disease + can also see microcephaly, neonatal purpura, cognitive deficits, celery stalking (bones), salt and pepper retinoapthy, congenital glaucoma
CMV
1. How does mother get this?
2. How does this get transferred to baby
3. Symptoms
- sexual contact or just close contact. 40-90% of adults are CMV positive already
- transplacental
- hearing loss, seizures, periventricular calcifications in brain, petechial rash
Herpes Simplex
1. How does this get transferred to baby
2. Symptoms
- Perinatal - baby gets this via skin or mucous membrane contact at birth
- Meningoencephalitis, vesicular skin lesiosn, etc
Syphilis
1. How does this get transferred to baby
2. Symptoms
- transplacentally
- stillbirth, hydrops fetalis, notched teeth, nasal discharge (”snuffles”) - infectious, Saddle nose, Saber shins, Deafness
Dilation and Evacuation
1. At what point of pregnancy can this occur?
2. What is the process
3. How is this different than D&C (AKA vacuum aspiration or urterine aspiration)
- after 12 weeks
- cervical dilation followed by removal of uterine contents using a combination of vacuum aspiration and instruments
- D&C is done before 12 weeks in first trimester.
- Define abortifacient
- substance intended to cause termination of a pregnancy so that it does not result in live birth
D&C vs D&E
1. sedation levels
2. levels of invasiveness
- D&C can be done while patient is awake but pt is still given analgesics. D&E requires IV sedation
- D&E is more invasive and requires more cervical prep
- When can medical abortion be done?
- in 2nd trimester of pregnancy
What is considered (in weeks)
1. First trimester
2. 2nd trimester
3. 3rd trimester
4. How many weeks is considered full term?
- first 12 weeks
- 13-26 weeks
- 27 weeks to full term
- 37-40 weeks
Oxytocin
1. Therapeutic use (2)
2. MOA
3. What other hormone can stimulate oxytocin levels
- promotes milk ejection, stimulates uterine smooth muscle to induce labor, also given as adjunct after PGE to shorten abortion time
- Released from posterior pituitary and go to receptors in mammary glands and uterus to induce effect
- estrogen increases oxytocin
Prostaglandins
1. MOA
2. Therapeutic use
- longer duration of action than that of oxytocin (given parenteral)
- Can induce labor more effectively (contractions) than oxytocin and can soften cervic for labor. This is often given to start labor before it naturally occurs for various reasons. Given via the vagina.
Ergot Alkaloids
1. Drug of choice
2. MOA
3. Therapeutic use
- Ergonovine (rapid onset and prolonged duration)
- Actions on alpha adrenergic and serotonergic receptors -> cause more uterine contractions
- Stimulates smooth muscle postpartum to prevent bleeding and maintain uterine muscle tone
Oxytocin vs PGE
1. Which is more effective in 2nd trimester
2. Which is more effective in 3rd trimester
- 2nd trimester- PGE
- 3rd trimester - oxytocin
Terbutaline (for pregnancy usage)
1. type of drug
2. MOA
3. therapeutic use
- Beta 2 agonists
- Autonomic innervation of uterus
- Used to delay/prevent premature delivery. This decreases frequency, duration, and intensity of contractions.
Indomethacin (NSAID)
1. Therapeutic use in pregnant women?
2. MOA
- inhibits uterine contractions
- blocks prostaglandin synthesis (remember PGE induces labor)
MgSO4
1. Therapeutic use in pregnancy?
2. MOA
- inhibits contractions by direct effect on myometrium
- Excitation and contraction of smooth muscles are uncoupled. Repeated dosing can inhibit labor for more than a week at times.
Nifedipine
1. Therapeutic use in pregnancy?
2. MOA/type of drug
- inhibit uterine contractions
- inhibit Ca2+ influx into myometrial cells to stop muscle activity/contraction
- What key microbe is responsible for regulating the pH and protecting from infection in female genital tract?
- Which areas of the GI tract are free of microbes?
- Lactobacillus
- Kidney, ureter, urinary bladder are sterile