OBGYN: Puberty, MS, Amenorrhea, Dysmenorrhea Flashcards
define puberty
- series of what two events
- what develops?
- series of neuroendocrine + physiological events
- results in develop of secondary sex characteristics, menarche and ovulation
puberty
-onset is determined by? (5)
- genetic factors
- geographical location
- nutritional status
- excessive exercise
- psychological factors
what happens 1 yr before puberty
- nocturnal pulses of gonadotropin secretion—FSH and LH
- incr resp in the pituitary to GnRH
results in stimualtion of gonadal maturation with ESTRADIOL and TESTOSTERONE secretion
age of onset of puberty
- girls + anatomically whats starting?
- boys + anatomically whats starting
girls: 8-9–thelarche (breast enlargement)
boys: 11— enlargement of testes and thining of scrotal skin
define thelarche
breast enlargement
what causes development of breasts, maturation of repro organs and deposition of fat in female hips
estradiol
list the repro organs in girls
vagina
uterus
ovaries
3 things that estradiol does to female body during puberty
- breast maturation
- develop of repro organs—vagina, uterus, ovaries
- deposition of fat in female hips
what causes rapid skeletal growth of testes, scrotum and penis
- incr in prod of growth factors
2. estrogen
when is male puberty complete
first ejaculation that contains mature sperm
when is female puberty is complete
time of first ovulatory menstrual period
—can take up to 1-2 years after menarche
how do we describe the stages of puberty
tanner stages
no sexual hair (both), flat appearing chest with raised nipple (girl)
-age + stage?
stage 1
pre-pubertal
pubic hair appears (both), testicular enlargement, breast bud forms
-age + stage?
stage 2
8-11.5 YO
coarsening of pubic hair (both), -penis size/length incrs,
- breast enlarge, mound forms
- age + stage?
stage 3
11.5-13 YO
coarse hair across pubis—sparing thigh (both),
- penis width/glans incr,
- breast enlarges, raised areola, mound on mound
- age + stage?
stage 4
13-15YO
coarse hair across pubis and medial thigh (both)
- penis and testies enlarge to adult size
- adult breast contour, areola flattens
- age + stage?
stage 5
usually >15 YO
define precocious puberty
too early
both delayed and precocious puberty involve?
-inappropriate onset of sex hormone production by gonads
define delayed puberty in girls and boys
- girl hasnt developed breast buds by age 13
- boys havnt had enlargement of the testes by 14.5 yrs old
in about 95% of delayed puberty cases— what is cause
-tx? when to do it?
normal physiologic event
- **everything is happen normally but SLOWLY
- *tx rarely needed—>causing psychosocial problems
% of cases that delayed puberty is normal physiologic event
95
% of delayed puberty cases caused by genetic mutations, disruption of HPG axis or outcomes of systemic dz
5%
causes of the 5% of delayed puberty cases (3)
- genetic mutations
- disruption of HPG axis
- by outcomes of systemic dz
two main general causes of delayed puberty causes
-exs for each one
HypERgonadotropic HyPOgonadism–>increased FSH and LH
- ***Gonadal dysgenesis turner syndrome
- ***Klinefelter syndrome (47, XXY)
- Bilateral gonadal failure from traumatic, infectious or autoimmune causes
HyPOgonadotropic HyPOgonadism—>decr LH and FSH
- Kallmann syndrome (GnRH deficiency)
- pituitary adenomas
- drug use
- anorexia/extreme exercise
MCC for delayed puberty in the 5% of cases that is not physilogic normal
- Turner syndrome–Gonadal dysgenesis
2. Klinefelter syndrome—47 or XXY
what is Kallmann syndrome
GnRH deficiency causing Hypogonadatropic Hypogonadism delayed puberty
define precocious puberty–girls and boys
- sexual maturation occuring b4 age 6 in black girls or 7 in white girls
- b4 age 9 in boys
causes of precocious puberty (3)
- obesity
- endocrine disruptions in common household products–pesticides, plasticizers and pharmaceuticals
- lethal central nervous system tumors
complete precocious puberty
- define
- what is the axis?
- cause in 10% of cases?
- premature development of appropriate characteristics
- hypothalamic-pituitary-ovarian axis functioning normally BUT prematurely
10% cases–lethal CNS tumor is cause
partial precocious puberty
- define
- can develop to?
- cause?
partial development of appropriate secondary sex characteristics
can progress to complete precocious puberty
cause: estrogen secreting neoplasms or may be variant of normal pubertal development
mixed precocious puberty
- define
- cause
- partial development of some secondary sex characteristics of the OPPOSITE gender
- commonly caused by adrenal hyperplasia or androgen-secreting tumors
MC congenital mullerian anomalies–>which class is MC
Biconuate uterus
follicular phase also called
menses + proliferative phase
Luteal phase also called
Secretory phase
Seccretory phase?
luteal phase
proliferative and menses phase?
Follicular phase
days 0-14
follicular phase/proliferative
days 14-28
secretory phase/luteal phase
surge in what hormone causes ovulation
LH
hormone predominating the luteal phase
progesterone