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Reproductive System
Drugs for the Reproductive System
41
Pharmacology
Undergraduate 2
05/18/2011

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Term
Generic Name for Oral Contraceptives
Definition
Ovcon 35
Neucon 1/35
Ortho-novum
Term
Action of Oral Contraceptives
Definition
Decrease fertility by:
- inhibiting ovulation
-thickening cervical mucus
-making lining of endometrieum less favorable for implantation
Term
Side effects of Oral Contraceptives
(Ovcon, Necon 1/35, ortho-novum
Definition
1. HTN
2. Breakthrough bleeding
3. Thromboembolic events (MI, PE--> STOP SMOKING)
4. Cervical Cancer (HPV risk; papsmear)
Term
Drugs that decrease the effectiveness of oral contraceptives
Definition
-ampicillin
-tetracycline
-carbamazepine
-phenobarbital
-phenytoin
Term
Oral contraceptives decrease the effectiveness of which drugs?
Definition
Oral hypoglycemics
Warfarin
Term
What should you encourage to patients taking oral contraceptives?
Definition
-take pill same time each day
-STOP smoking
Term
Generic name for progesterones
Definition
medroxyprogesterone acetate (Provera)
norethindrone (Micronor)
megestrol acetate (Megace)
Term
Action of progesterone
Definition
-induces favorable environment for:
- fetal growth & development
-maintain pregnancy
Term
Drop in progesterone levels results in _____
Definition
menstruation
Term
Uses for progesterone
Definition
-counters adverse effects of estrogen in HRT:
1. dysfunctional uterine bleeding
2. Amenorrhea d/t hormonal imbalance
3. Endometriosis
4. Endometrial carcinoma
Term
S/E of Progesterone
Definition
1. Breast cancer (AVOID administration)
2. Thromboembolic events
3. Breakthrough bleeding
4. Edema
Term
Crabamazepine
Phenobarbital
phenytoin
rifampin
Definition
contraceptive effectiveness decrease with the use of these drugs
Term
Client Teaching for Progesterone
Definition
-anticipate withdrawal bleeding 3-7 days after stopping medications
Term
Evidence of progesterone effectiveness:
Definition
-restoration of hormonal balance with control of uterine bleeding
-restoration of menses
-decrease in endometrial hyperplasia in postmenopausal women receiving estrogen
-controls spread of endometrial cancer
Term
Estrogen
Definition
conjugated equine estrogens (Premarin)
Estradiol
Term
What is estrogen needed for?
Definition
-female growth/reproduction & traits
-block bone resorption
-decrease LDL
-suppress FSH (FSH needed for conception)
Term
Uses for estrogen:
Definition
-contraception
-post menopause
-osteoporosis
-prostate cancer
-uterine bleeding/endometriosis
Term
s/e of estrogen
Definition
1. Endometrial/ovarian cancer
--> give with progesterone; biopsy q2 years
2. Risk of estrogen dependent breast CA
--> self breast exams
3. Embolic events
4, Males = gyncocomastia, impotence, penile atophy
Term
Interaction of estrogen and warfarin
Definition
1. Estrogen decreases warfarin effectiveness
--> may need to INCREASE warfarin levels
Term
T/F Phenytoin increases estrogen toxicity
Definition
true
Term
Androgens
Definition
-required for growth and maturation of male sex organs
-promotes skeletal muscle growth (anabolic steroid effect) in sexually mature males
Term
Uses for testosterone
-fluoxymesterone (Halostestin)
-danazol (Danocine)
Definition
-hypogonadism
-delayed puberty
-pallative tx for breast cancer
Term
s/e for testosterone
Definition
1. CV (increase LDL, decrease HDL, edema)
2. Hepatoxcity
3. Hypercalcemia (breast -ca)
4. Virilism effects: acne
-M= gyncomastia, impotence, priapism, acne
-F= deeper voice, hirtuism, menstraul irregulatiries
Term
Testosterone and effects with:
Warfarin
Glucocorticoids
Oral Hypoglycemics
Definition
increases effects: monitor for
-bleeding, anemia
-infection
-hypOglycemia
Term
Uterine Stimulants
Definition
1. oxytocin
2. methylergonaovine
Term
Action of uterine stimulants
(oxytocin, methyergonovine)
Definition
increase strength, frequency, length of uterine contraction
Term
Oxytocin is used for:
Definition
-induction of labor
-control of post partum bleeding
-fetal stress testing
-Intranasal = promotion of milk let down)
Term
uses for methergine
Definition
-emergency intervention for serious postpartum hemorrhage
Term
s/e of oxytocin
Definition
uterine rupture
-> magnesium sulfate on standby for relaxation of myometrium
Term
s/e of methylergonovine (Methergine)
Definition
HTN crisis
Term
What medication should you avoid with uterine stimulatns (oxytocin)
Definition
vasopressors. WHY?
- can lead to HTN
Term
How should uterine stimulants (oxytocin) be administered?
Definition
infusion pump
-gradually increase flow rate by 1mu/min q 30 min
Term
What should you monitor with the administration of oxytocin?
Definition
-fetal HR
-uterine hyperstimulation
(contractions longer than 60 sec
occurring q 2-3 minutes)

STOP INFUSION
Term
Tocolytic Medications
Definition
-terbutaline sulfate (Brethine)
-magnesium sulfate
-ritodrine
Term
Action of terbutaline
Definition
selectively activates beta 2-adrenergic receptors (beta 2 adrenergic agonist) RESULTING in
-utereine smooth muscle relaxation
Term
Uses of terbutaline
Definition
delay preterm labor
can be used up to 48 hrs
via IV/SC
Term
Uses of terbutaline
Definition
delay preterm labor
can be used up to 48 hrs
via IV/SC
Term
s/e of terabutaline
Definition
-tachycardia
-palpitations
-chest pain
-tremors
-anxiety
-ha
Term
What interaction does terbutaline have with androgen agonist/
Definition
-can cause concurrent additive effects
-monitor for tachycardia, tremors
Term
MAOIs and terbutaline
Definition
can cause HTN
(monitor for HTN crisis)
Term
Beta blockers and androgen
Definition
-monitor for negation of effects
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