PHARMACOLOGY STUDY GUIDE-contraception

PHARMACOLOGY STUDY GUIDE-contraception - PHARMACOLOGY STUDY

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PHARMACOLOGY STUDY GUIDE-Contraception 1. Five general mechanisms of contraception. Prevent sperm from entering vagina/cervix ( BARRIER METHOD ) Immobilization/Inactivation of sperm. ( SPERMACIDES ) Fertility Awareness ( KNOWING OVULATION/CYCLE ) Prevent Ovulation/Implantation ( BC ) Sterilization ( Extreme cases of barrier method ) 2. The contraceptive effects of ESTROGEN Inhibition of ovulation (effect on hypothalamus) Inhibit Implantation (after uterine secretions) Accelerate ovum transport (get it out of area where it can be fertilized) Luteolysis (degeneration of corpus luteum) 3. The contraceptive effects of PROGESTIN [Main effect is not inhibition of ovulation) Increase cervical mucus viscosity. Capacitation Inhibited Slow ovum transport Inhibit implantation Inhibit ovulation 4. Differences between MONOPHASIC, BIPHASIC, and TRIPHASIC Combination Oral Contraceptives Monophasic Combination Oral Contraceptives: 21 active pills, 7 placebo pills. Active pills all have the same amount of estrogen and progestin throughout the cycle. (progestin is 3x more than estrogen).
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Biphasic Combination Oral Contraceptives: One cycle is divided into TWO. (1-10 days, 11-21 days). The amount of estrogen stays the same in both cycles, but the amount of progestin increases in the second cycle. Triphasic Combination Oral Contraceptives: One cycle is divided into THREE. (1-7, 8-14, 15-21) The dose of estrogen stays the same in all three cycles, but the progestin increases in three small increments throughout the cycles. 5.
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PHARMACOLOGY STUDY GUIDE-contraception - PHARMACOLOGY STUDY

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