Term
Sperm bind to a receptor on the ___ |
|
Definition
|
|
Term
Binding initiates enzyme release from the lysosomal ____ which
degrades zonapellucida |
|
Definition
|
|
Term
When first sperm reaches ovum cell membrane, it fuses with cell membrane;
_____ change prevents other sperm
from fusing |
|
Definition
|
|
Term
The head of sperm contributes____ |
|
Definition
| paternal DNA (23 chromosomes) from male pronucleus |
|
|
Term
The mature ovum contributes _____ to form the diploid fertilized ovum/zygote |
|
Definition
23 chromosomes from the female
pronucleus |
|
|
Term
| Fertilization occurs in the ___ |
|
Definition
|
|
Term
●Fusion of 2 haploid gametes to produce a zygote with ___ |
|
Definition
|
|
Term
| Series of cell divisions after fertilization that leads to formation of ____ |
|
Definition
|
|
Term
Identical cells formed by cleavage divisions |
|
Definition
|
|
Term
Zygote (fertilized egg) takes ___to reach uterus - transported by ciliated cells in uterine tube |
|
Definition
|
|
Term
Blastocyst takes ___ prior to
implantation |
|
Definition
|
|
Term
Blastocytes obtains nutrition from
endometrial secretions, called
_____ |
|
Definition
|
|
Term
After contacting uterine
endometrium, blastocyst becomes
surrounded by outer layer of
____ |
|
Definition
|
|
Term
| ____ erode the endometrium and the blastocyst burrows in (Implants) |
|
Definition
|
|
Term
After implantation, the trophoblasts
develop into the ____.
|
|
Definition
|
|
Term
| Give 4 functions of trophoblast |
|
Definition
1. Digestion and invasion of decidual cells, which release stored nutrient that are used by embryo for growth and development (endometrial cells --> decidual cells by progesterone).
2. Secretes hCG until placenta takes over
3. Forms the chorion and grow into lucunae filled with maternal blood to form the chorionic villi (carries fetal blood) of the placenta.
4. Amniotic cavity and its fluid surround the embryo and offers protection |
|
|
Term
| Development of embryo takes ___ |
|
Definition
|
|
Term
| Explain the fetus blood flow. |
|
Definition
| unoxygenated blood from fetus --> 2 umbilical arteries --> enters chorionic villi (surrounded by larges sinuses containing mother's blood) --> diffusion between chorionic villi and sinuses occurs, allowing exchange of waste, oxygen and nutrients --> 1 umbilical vein carries enriched, oxygenated blood back to fetus |
|
|
Term
| Explain the maternal blood flow to fetus |
|
Definition
| Uterine arteries --> supplies maternal sinuses (which surrounds the chorionic villi) -->diffusion occurs --> uterine veins then carries away the deoxygenated blood with waste back to the mother |
|
|
Term
| T/F: Fetal and maternal blood mix in order to exchange nutrients and gases. |
|
Definition
|
|
Term
The mother and fetus circulatory systems are separated by the __ and __- |
|
Definition
| placental trophoblasts and fetal capillary wall |
|
|
Term
| Give the 5 types of hormones made by the placenta |
|
Definition
1. Human chorionic gonadotropin (hcG)
2. Estrogen
3. Progesterone
4. Lactogen
5. Relaxin |
|
|
Term
___ production begins within few days of implantation (1st hormone made by placenta) |
|
Definition
| Human chorionic gonadotropin (hCG) |
|
|
Term
____ stimulates corpus luteum to continue to make ____during the early stages of the pregnancy |
|
Definition
|
|
Term
During the ___trimesters, the placenta also releases progesterone, estrogens, human placental lactogen (HPL), and relaxin |
|
Definition
|
|
Term
progesterone, estrogens, human placental lactogen (HPL), and relaxin are synthesized and released into maternal circulation by _____ |
|
Definition
|
|
Term
Five primary effects of estrogen on the mother:
|
|
Definition
- Promotes growth of the uterus, breast, and ductal tissue
- Promotes enlargement of mother’s female external genitalia
- Relaxes pelvic ligaments
- Increases blood flow to uterus
- Increases hepatic protein synthesis
|
|
|
Term
| There is a 10 fold increase in ___ and 30 fold increase in ___ during pregnancy. |
|
Definition
10-fold increase = progesterone
30-fold increase = estrogen |
|
|
Term
| 3 Functions of progesterone during pregnancy |
|
Definition
1. development of decidual cells into uterine endometrium
2. Prevention of uterine contractions and sloughing of the endometrium
3. Prepare breast for lactation |
|
|
Term
| Labor and parturition is driven by ___ |
|
Definition
| oxytocin and increased oxytocin receptors in the uterus |
|
|
Term
|
Definition
|
|
Term
| Dilations and contractions of the uterine causes ___ |
|
Definition
|
|
Term
| oxytocin and contractions of the uterine has a __ feedback |
|
Definition
| positive feedback = oxyotocin causes contractions and dilation of the cervix, and more contractions and dilation increases oxytocin levels |
|
|
Term
| Most pregnancy-induced problems are GI related. Give the 4 most common ones. |
|
Definition
1. Nausea and vomitting - 90%
2. GI reflux - 80%
3. Constipation - 25-40%
4. Hemorrhoids - prevalence higher in pregnant women |
|
|
Term
| A severe form of nausea and vomiting in pregnant women. |
|
Definition
| Hyperemesis gravidarum (HEG) |
|
|
Term
| __ places a big role in maintaining glucose and free fatty acid levels in pregnant women and therefore is important in gestational diabetes |
|
Definition
Lactogen -
promotes maintenance of serum glucose concentration and free fatty acids in maternal circulation |
|
|
Term
| Explain the process of gestational diabetes (4% of preggies) and how it affects the fetus |
|
Definition
| mother is has decreased sensitivity to insulin and therefore blood glucose is increased (due no reuptake into tissue). The glucose enters fetal circulation from mother's blood and the level of insulin in fetus increases --> insulin stimulates growth in the fetus and causes delivery problems and the newborn can end up with hypoglycemia (high insulin levels but no longer getting high glucose). |
|
|
Term
| Give and describe the 3 types of preggies hypertension (10% of preggies) |
|
Definition
1. Gestation HTN = >140/90
2. Preeclampsia = HTN + proteinuria
3. Eclampsia = Preecclampsia (HTN + proteinuria) + seizures |
|
|
Term
| Preeclampsia occurs when during preggie? And it's caused by ___ |
|
Definition
Last few months (end of preggy)
- ●Rapid rise in BP in last few months of pregnancy
Cause: abnormal placentation - imperfect vascular exchange, fetal hypoxia and inflammatory mediators from placenta into maternal circulation |
|
|
Term
| ___ reduces risk of preeclampsia |
|
Definition
|
|
Term
Preeclampsia -
●Impaired function of vascular endothelium in kidney, brain, liver
●Leads to HELLP (Hemolysis, Elevated Liver enzymes, Low Platelet count) and impaired function of kidney, liver and brain
|
|
Definition
Preeclampsia -
●Impaired function of vascular endothelium in kidney, brain, liver
●Leads to HELLP (Hemolysis, Elevated Liver enzymes, Low Platelet count) and impaired function of kidney, liver and brain |
|
|
Term
| __ may be needed for ecclampsia, and ___ is used as an anti-convulsant. |
|
Definition
May be needed = Emergency C-section
Anti-convulsant = Magnesium sulfate therapy (do not give anti-seizure drugs due to teragenocity) |
|
|
Term
Women usually asymptomatic, but may present vomiting, increased serum free thyroxine, and is caused during pregnancy by high hcG. |
|
Definition
| Gestational Transient Thyrotoxicosis |
|
|
Term
●4% of women 1-4 months after childbirth
●Increased thyroid hormone secretion
●Usually resolves spontaneously
●β-blockers provide symptomatic relief of adrenergic symptoms |
|
Definition
|
|
Term
| ____ provides relief of symptoms of postpartum thyroiditis |
|
Definition
|
|
Term
____ occurs 5-10x more frequently in pregnant vsnonpregnant women) and requires anticoagulant therapy |
|
Definition
|
|
Term
| 2 recommended treatment for thromboembolism in preggies |
|
Definition
Unfractionated heparin and LMWH (low molecular weight heparin)
- treat through out pregnancy
- Never use warfarin = teragenonic |
|
|
Term
| Neural tube defects occurs during the __ time of pregnancy |
|
Definition
| 20th - 28th day of pregnancy |
|
|
Term
| 2 most common forms of neural tube defects |
|
Definition
| Anencephaly and Spina bifida |
|
|
Term
Intake of additional ____ before and at the start of a pregnancy significantly reduced NTD rates |
|
Definition
| folic acid (vitamin B12 plays a role too) |
|
|
Term
| What is the purpose of tocolytic therapy? |
|
Definition
| Postpone or delay delivery which allows mother to be transferred to safe facility for high risk pregnancies |
|
|
Term
| 4 agents used in tocolytic therapy |
|
Definition
1. Beta blockers
2. Magnesium sulfate
3. Calcium channel blockers
4. NSAIDs |
|
|
Term
↑ levels of ___ alter metabolic enzyme levels in the liver and changes rate of drug elimination |
|
Definition
|
|
Term
| Give the 5 types of drugs that can easily diffuse through the placenta from mother to fetus |
|
Definition
1. low molecular weight < 500
2. Lipophilic > lipophobic
3. Protein binding drugs (binds less to mother due to decrease albumin, but binds more to fetus due to increased albumin in fetus)
4. Neutral drugs and Weak bases (due to fetal pH>mother pH)
5. Active efflux transport |
|
|
Term
| Active drug transporters (efflux transport back to mother which decreased drug delivery to fetus) found in trophoblast and fetal placental capillaries. |
|
Definition
1. P.glycoprotein (Pgp or Mdr-1)
2. Multi-drug resistance protein-2 (MRP-2)
3. Breast Cancer Resistance Protein (BCRP)
4. Organ Anion Transporter-4 (OAT-4) |
|
|
Term
| Give the 2 Influx Transporters to fetus (increases drug delivery to fetus) |
|
Definition
1. Organic cation transporter N-2
2. Multi-drug resistance protein - 1 & 3 (MRP-1 and MRP-3) |
|
|
Term
| In most cases, you dont want maternal-fetus drug exchange, but what are the 3 classes of drug exception and why? |
|
Definition
1. Corticosteroids - stimulates lung maturation
2. Antiarrhythmics - treat fetal cardiac arrhythmias
3. Anti-retrovirals - treat HIV transmission |
|
|
Term
| ___ regulates the secretory characteristics of the alveoli |
|
Definition
|
|
Term
Promotes production of milk |
|
Definition
| Prolactin (from the anterior pituitary) |
|
|
Term
During pregnancy, milk production is
suppressed by Estrogen and Progesterone but the slight amount formed is ____ |
|
Definition
| colostrum - has no fat, is high in antibodies, macrophages and lymphocytes |
|
|
Term
| After delivery, the decrease in ___ and ___ leads to full milk production |
|
Definition
| Decrease in estrogen and macrophages |
|
|
Term
Nursing causes a ____feedback
loop through the hypothalamus for
prolactinrelease |
|
Definition
|
|
Term
| Promotes ejection of milk from the mammary gland |
|
Definition
Oxytocin - contraction of mammary myoepithelial cells causes ejection of milk from nipples
|
|
|
Term
Suckling stimulates secretion of
___from posterior pituitary |
|
Definition
|
|
Term
| What is the nutrient function of milk? |
|
Definition
1.5 liters/day of milk
100g of lactose
2-3g of calcium phosphate
acidic
protein and fat
No irons |
|
|
Term
| Explain immune protection of maternal milk |
|
Definition
IgA - from mammary epithelial cells
IgG - form transplacental transport (passive immunity)
Colostrium - early mammary secretion after birth (high in immunoglobulins) |
|
|
Term
| The earliest mammary gland secretion after birth |
|
Definition
| Colostrium - high in immunoglobulin |
|
|
Term
__ types of drugs are usually able to get into mother's milk and passed to baby
|
|
Definition
| orally bioavailable drugs |
|
|
Term
| T/F: some drugs penetrate breast milk more during colostral period than in mature milk period due to leaky barrier |
|
Definition
|
|
Term
| What is the best type of drug to recommend to a nursing mother. |
|
Definition
low orally bioavailable drugs
shorter t1/2
high protein-binding
lower lipid solubility |
|
|
Term
| T/F: Mothers should breastfeed during peak while on medication; milk can be pumped and given to baby |
|
Definition
| False: Mothers should not breastfeed during peak; milk can be pumped and discarded |
|
|
Term
| most common cause of infectious mastitis |
|
Definition
|
|
Term
| most common treatment of mastitis |
|
Definition
|
|
Term
|
Definition
age of embryo or fetus from first day of last menstrual period
|
|
|
Term
| 1 pregnancy = __ days = ___weeks = 9 months |
|
Definition
|
|
Term
|
Definition
| number of times a women is pregnant |
|
|
Term
number of pregnancies exceeding 20 weeks and provides information regarding the outcome |
|
Definition
|
|
Term
| What does this parity mean? –G4P2113 |
|
Definition
Woman has been
G4 - pregnant 4 times
P2 - two term deliveries
1 premature
1 ectopic pregnancy
3 living children |
|
|
Term
| This period of pregnancy is called "all or nothing" and is spontaneous abortion occurs often when exposed to teratogenic drugs. |
|
Definition
|
|
Term
| At this stage in pregnancy, organogenesis occurs and the fetus is very sisceptible to structural anomalies if exposed to teratogenes |
|
Definition
|
|
Term
•Functional defects (CNS, growth retardation,etc)
• Minor anomalies |
|
Definition
|
|
Term
Most severe birth anomalies occur the ___trimester of pregnancy |
|
Definition
|
|
Term
Dose of folic acid supplement for:
1. women of childbearing age
2. to prevent neural tube defect
|
|
Definition
1. women of childbearing age = 400 mcg of folic acid/day
2. to prevent neural tube defect = 4mg of folic acid/day |
|
|
Term
| What immunizations should you recommend for prenatal care. |
|
Definition
|
|
Term
| 3 most Important components of prenatal vitamins are |
|
Definition
|
|
Term
| What is the 1st line treatment for constipation? |
|
Definition
| Light weight and increased dietary fiber and fluid |
|
|
Term
| What are pharmacological treatments for constipation |
|
Definition
Supplemental fiber +/- stool softener: Colace (Docusate sodium) and Surfak (docusate calcium)
or
Occassional use of Osmotic Laxatives: Miralax (polyethylene glycol) <-- ideal laxative in pregnancy
|
|
|
Term
| Avoid these types of oil in pregnancy. |
|
Definition
| Castor oil and Mineral oil - reduces nutrient absorption |
|
|
Term
| 1st line treatment for GERD. |
|
Definition
| lifestyle and dietary changes |
|
|
Term
| ___ is not recommended for GERD if pregnant |
|
Definition
| sodium bicarbonate - causes maternal or fetal metabolic alkalosis and fluid overload |
|
|
Term
| Name the 4 pharmacotherapy for GERD in pregnancy |
|
Definition
1. Calcium carbonate and Sucralfate (Carafate) - Antacids
2. Ramitidine (Zantac) and Cimetidine (Tagamet) - H2 receptor antagonists
3. Metoclopramide - promotility drug
4. Omeprazole (prilosec) and Esomeprazole (Nexum) - proton pump inhibitors for COMPLICATED or SEVERE GERD |
|
|
Term
| 1st line therapy for nausea and vomiting in pregnant women. |
|
Definition
| Eat frequent, small, non-fatty food |
|
|
Term
| Pharmacotherapy for nausea and vomiting in pregnant women. |
|
Definition
1. Vitamin B6 (pyridoxine)
2. Doxylamine (Unisom) and Dimenhydrinate (Dramamine) - Antihistamines
3. Phenothiazines (Compazine), Promethazine (phenergan) and Benzamide (Metoclopramide - Reglan) - Dopamine agonists
4. Ondansetron (zofran) - serotonin antagonist
5. Corticosteroid
6. Ginger
|
|
|
Term
| In pregnant women not previously known to have diabetes, screen for GDM at ___ weeks gestation |
|
Definition
|
|
Term
| ___ is the assessment test used to detect and diagnose gestational diabetes. Give the values. |
|
Definition
OGTT (performed in morning after 8-hour fasting) : GDM if
1. Fasting >92 mg/dL
2. 1hr >180 mg/dL
3. 2h >153 mg/dL
|
|
|
Term
| Screen women with GDM for persistent diabetes at ___weeks’ postpartum, using a test other than ___. |
|
Definition
6–12
A1C - do not use for GDM post-partum |
|
|
Term
| Women with a history of GDM should have lifelong screening for the development of diabetes or prediabetes at least every ____ |
|
Definition
|
|
Term
| Women with a history of GDM found to have prediabetes should receive ___ or ___ to prevent diabetes |
|
Definition
| lifestyle interventions or metformin |
|
|
Term
| 1st line treatment for gestational diabetes |
|
Definition
dietary modification
and
additional caloric restriction (for obese women) |
|
|
Term
| 3 pharmacotherapy for gestational diabetes |
|
Definition
1. Insulin
2. Glybyride (micronase)
3. Metformin |
|
|
Term
Diastolic blood pressure ___mmHg increases risk for placental abruption and fetal growth restriction |
|
Definition
|
|
Term
| Systolic BP ___ mm Hg increases risk for maternal intracerebral hemorrhage |
|
Definition
|
|
Term
| What are the treatment goals for HTN and preeclampsia? |
|
Definition
systolic <160 mmHg
diastolic <100-105 mmHg |
|
|
Term
| What is the treatment for preeclampsia? |
|
Definition
1. labetalol 200-2400 mg/day
2. Methyldopa 0.5-3 g per day
3. Nifedipine XL 30-120mg per day
Avoid ACEI/ARB |
|
|
Term
Increased risk of miscarriage, low birth weight, preterm birth |
|
Definition
|
|
Term
| Monitoring parameter for hypothyroidism |
|
Definition
–Pre-pregnancy and 1st trimester : < 2.5 mIU/L
–2nd and 3rd trimester: < 3 mIU/L
–Monitor every 4 weeks during the first half of pregnancy, then once between 26-32 weeks gestation |
|
|
Term
| Recommended pharmacotherapy for epilepsy. |
|
Definition
Carbamazepine or Lamotrigine
supplement with folic acid 0.4-5mg |
|
|
Term
| You don't have to treat post-partum depression, just give counseling. |
|
Definition
False: Risk of NOT treating is greater than risk of medication.
•Treatment
–Exercise, massage, counseling
–Selective Serotonin Reuptake Inhibitors (SSRIs):
•Sertraline (Preferred - minimal transfer to breast milk)
•Paroxetine
–Tricyclic antidepressants (TCAs):
•Nortriptyline
•Maternal side effects limit use |
|
|
Term
Infertility is defined as inability to
conceive after 1 year of frequent
contraception-free intercourse. If
oral contraceptives were previously
used, the time is extended to a
period of ___ . |
|
Definition
|
|
Term
| Difference between primary and secondary infertility |
|
Definition
}Primary Infertility – when couple
never has conceived a child
}Secondary Infertility – when couple
has previously conceived a child and
is unable to achieve a new
pregnancy |
|
|
Term
| Etiology of infertiliity in women |
|
Definition
1. Endocrine problems causing ovulatory dysfunction
2. polycystic ovarian syndrome (PCOS)
3. Uterine tube or pelvic abnormalities
4. Endometriosis or uterine factors
5. Damage from infections or antigenicity of sperm |
|
|
Term
| Majority of the time (40%) infertility is caused by ___ |
|
Definition
| male infertility with male sex organ |
|
|
Term
| Class of drugs that can cause female infertility |
|
Definition
1. Dopamine blockers - can cause hyperprolactinemia
2. Serotonic enhancers - can cause hyperprolactinemia
3. alcohol, cocaine and marijuana etc. |
|
|
Term
___production by corpus luteum causes the BBT to rise during the luteal phase |
|
Definition
|
|
Term
| Explain the intrauterine insemination (IUI) |
|
Definition
¡Sperm are separated from semen and better quality sperm are extracted for insemination
¡Sperm are injected trans-cervically into uterus
¡Procedure performed after ovulation during a natural cycle or after ovulation induction
¢Usually performed on the day after the urinary LH surge or 36 hours after injection of hCG |
|
|
Term
| What is the Assisted Reproductive Technology (ART)? |
|
Definition
}direct retrieval of oocytes and manipulation of sperm to achieve pregnancy
◦Not very common only 5% of infertility treatments
◦More than one embryo is usually transferred to uterus to increase likelihood of pregnancy
◦In vitro fertilization (IVF) is most common form
◦Gamete or zygote intrafallopian tube transfer (GIFT/ZIFT)
–Placement of human ova and sperm or zygote into the distal end of the oviduct |
|
|
Term
Nonsteroidal estrogen receptor
modulator. Blocks feedback inhibition
of hypothalamus. Raises FSH & LH
leading and HPG function |
|
Definition
|
|
Term
approved for treatment of infertility in anovulatory women |
|
Definition
|
|
Term
is a pure ERα and ERβ antagonist. It blocks estrogen inhibitory activity at pituitary & hypothalamus and releases feedback inhibition at these tissues. This leads to marked upregulation of LH, FSH, and GnRH. |
|
Definition
|
|
Term
•leads to enlargement of the ovaries and drug-induced ovulation in many patients with amenorrhea, polycystic ovarian syndrome, and dysfunctional bleeding with anovulatory cycles |
|
Definition
|
|
Term
| Primary and secondary site of clomiphene citrate |
|
Definition
Primary - estrogen receptors in ovaries
secondary - direct effect on ovaries |
|
|
Term
| Clomiphene is well absorbed following __administration |
|
Definition
|
|
Term
Clomiphene is converted to metabolites via CYP ___and its metabolites are eliminated primarily in the feces. |
|
Definition
|
|
Term
| Of women whose problem is irregular or no ovulation, 80% will ovulate and ___% will be pregnant within 6 months of starting clomiphene therapy |
|
Definition
|
|
Term
| Give the dose for clomiphene citrate |
|
Definition
| 50 mg PO daily for 5 days at day 2-5 of cycle |
|
|
Term
| What is considered a clomiphene citrate failure |
|
Definition
| no pregnancy in 6 cycles of on clomiphene |
|
|
Term
| what should you do if no ovulation after initial therapy of clomiphene |
|
Definition
| increase dose by 50 mg/day (max out at 150mg/day) |
|
|
Term
| Clomiphene is 1st line in ___ |
|
Definition
1. ovulation induction or intrauterine insemination
2. PCOS
3. Women with normal GnRH
|
|
|
Term
Lack of efficacy of clomiphene may be due to ___ |
|
Definition
| endometrial thinning and production of increased thickening cervical mucus |
|
|
Term
|
Definition
| inhibits conversion of testosterone to estradiol and the decrease in estrogen stimulates release of FSH and LH |
|
|
Term
Women for whom clomiphene does not work are candidates for more advanced therapies. |
|
Definition
|
|
Term
are expensive, must be administered parenterally on a daily basis, and require extensive monitoring |
|
Definition
|
|
Term
| What is the effect of gonadotropin therapy in male and women. |
|
Definition
Males - stimulates spermatogenesis
Female - FSH stimulates maturation and development of follicle; LH causes ovulation and stimulates the corpus luteum |
|
|
Term
| How is gonadotropin stored? |
|
Definition
Powder can be refrigerated or stored at room temperature |
|
|
Term
| WHen is gonadotropin therapy used in male and female? |
|
Definition
◦Female
- Hypothalmic anovulation
- Ovulation induction in those that failed clomiphene
- Stimulates development of multiple follicles in ovulatory women for ART
◦Male
Spermatogenesis in men with 1° or 2° hypogonadotropichypogonadism |
|
|
Term
____ works well in women who have infertility due to lack of midcycle gonadotropin surge. Is given IM. |
|
Definition
| Human Chorionic Gonadotropin (hCG) |
|
|
Term
|
Definition
|
|
Term
|
Definition
Adverse effects – headache, irritability, restlessness, fatigue, edema, gynecomastia, and pain at injection site. |
|
|
Term
|
Definition
| supplements LH and mimics LH surge |
|
|
Term
Correct for lack of mid-cycle gonadotropin surge |
|
Definition
|
|
Term
It is administered via portable pump with ~90 min min infusion pulse interval. Can be given SC or IV. Plasma t1/2 = 2 min. |
|
Definition
|
|
Term
| Adverse effects of gonadorelin |
|
Definition
| Ovarian hyperstimulation syndrome and increased risk of multiple gestation |
|
|
Term
Relates to enlarge ovaries with multiple developing ovarian follicles or cysts. Vascular endothelial growth (VEGF) hormone makes hyper permeable blood vessels leading of shift of fluid from vascular system to abdominal and pleural cavities. |
|
Definition
| Pathophysiology of ovarian hyperstimulation syndrome |
|
|
Term
After a transient stimulation of gonadotropin secretion, they down-regulate the GnRH receptor and inhibit gonadotropin secretion |
|
Definition
|
|
Term
| What are the MOA of Pulsatile delivery of GnRH agonist? Continous delivery? |
|
Definition
Pulsatile delivery : increase release of gonadotropin from pituitary
Continous delivery: temporary increase, then inhibits release of gonadotropin after a few weeks |
|
|
Term
| Side effects of GnRH agonists. |
|
Definition
◦ Stimulation: excessive ovarian stimulation and estrogen synthesis (vaginal bleeding, breast tenderness)
◦ Suppression: estrogen deficiency (hot flashes, headache, vaginal dryness) |
|
|
Term
| To prevent premature LH surge or premature ovulation, women receiving controlled ovarian hyperstimulation may receive ___ |
|
Definition
|
|
Term
suppress LH surge but do not have initial flare stage of secretion seen with GnRH agonists |
|
Definition
|
|
Term
| GnRH antagonists are formulated for ___administration. Bioavailability is > 90% and plasma t1/2 varies with dose |
|
Definition
|
|
Term
|
Definition
Competes with natural GnRH for pituitary receptors à immediate decrease in pituitary secretion of FSH and LH |
|
|
Term
| Adverse effects of GnRH antagonists |
|
Definition
| Vaginal bleeding, ovarian hyperstimulation syndrome (less), headache, N/V |
|
|
Term
| What is the place in therapy for GnRH antagonists |
|
Definition
Suppress premature LH surge and premature ovulation during controlled ovarian stimulation with menotropins |
|
|
Term
Sometimes used to stimulate endometrial growth and cervical mucus production in follicular phase |
|
Definition
|
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Term
Sometimes used to promote endometrial development and maintenance during luteal phase to improve implantation and success of embryo |
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Definition
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Term
| Insulin lowering agent. Can reduce insulin resistance and hyperinsulinemia in PCOS patients. Restores menstrual cycle and ovarian function |
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Definition
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Term
| Can help improve cervical mucus quality. |
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Definition
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Term
Can be used for treatment of infertility related to hyperprolactinemia. |
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Definition
Dopamine Agonists :
•Bromocriptine – shorter acting ergotamine derivative
•Cabergoline – longer acting with higher affinity for dopamine D2 receptor. Can be given once or twice a week and results in more effective normalization of prolactin restoring menses and is tolerated better than bromocriptine
Adverse effects – Headache & dizziness. Psychiatric symptoms in <1% of patients |
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Term
May increase uterine and ovarian blood flow velocity to improve function |
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Definition
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