contusions prt 2 + rupture of uterus and vagina + bladder Flashcards
When a large fetus is forcibly drawn into the
maternal pelvis the lumbar nerves which pass over
the lumbosacral joint to form the anterior part of
the lumbosacral plexus may be damaged; paralysis
of the ___ or ___ nerves is a possible
result
gluteal or obturator
This is particularly likely when an oversized
fetus becomes impacted in a state of _____, the
nerves being trapped between the lumbosacral
promontory of the mother and the iliac bones of
the calf.
hiplock
damage to lumbosacral plexus
seen in the mare and cow; in
the mare it has followed spontaneous birth.
gluteal paralysis
recognised when the dam is found to have difficulty in rising and when she walks with ‘weakness
of the hindlimbs’
gluteal paralysis
Obturator paralysis is more frequent in mares than
cows t/f
f-freq in cows
legs will be splayed and the cow is
unable to rise.
obturator paralysis
(The obturator nerve supplies the adductor
muscles of the thigh)
Where
there is complete and bilateral paralysis, prognosis
should be ____
guarded
_______together of the hind legs with
a strap applied above each fetlock prevents excessive abduction and secondary tearing of the adductor muscles or fracture of the femoral neck during
attempts to stand.
hobbling
Unless there is marked improvement
within a fortnight, recovery is likely to occur t/f
f - unlikely
slings for obturatory paralysis is given to sheeps t/f
f - cows
Rupture of the uterus may occur spontaneously t/f
t
common cause: faulty obstet technique
Spontaneous rupture is most likely to arise
in association with or with
uterine torsion
cervical non dilatation
uterine distension that occurs with twins in one
horn, with hydrallantois or with excessive fetal size
The most likely time of spontaneous rupture is in
___ gestation or during labour.
late
___predisposes to rupture because the ___ of
the calf fully occupies the maternal pelvic inlet and
allows no egress for the fetal fluid when the uterine
and abdominal contractions build up the hydrostatic pressure within the uteru (Hopkins and Amor)
breech rpesentation, breech
accdg to pearson and denny, 2 major predisposing factors of uterine rupture
uterine
torsion and fetopelvic disproportion
e only evidence of
it is the subsequent finding of a uterine adhesion or
of a mummified fetus among the abdominal viscera or the so called
extrauterine pregnancy
Alternatively, the
dam’s intestines may prolapse into the uterus and
even protrude from the vulva; the condition may
then be confused with dystocia due
schistosoma reflexus in visceral presentation
Accidental rupture
of the uterus is likely to occur in the most simple
dystocia cases t/f
f - difficult cases
3 immediate causes of uterine rupture IIE
Insufficient uterine space for the extension of a limb or head, inordinate traction on a wrongly disposed or oversized
fetus
excessively vigorous retropulsion
other causes of uterine rupture
cervix is incompletely dilated, traction on the fetus
may cause rupture of that organ.
Careless use of the
obstetric forceps in the bitch
external violence as, for example, when the parturient dam falls heavily or receives a severe kick or
horn-gore on its abdomen
the obstetrician must decide to consider these two things after an initial examination of the genital tract in dystocia cases
whether to
proceed with the delivery per vaginam or whether
to perform laparotomy, extract the fetus and repair
the uterine rupture from the laparotomy site
small dorsal rupture is discovered
and the amount of obstetric interference still
required is small. is laparotomy indicated? yes or no
yes
Spontaneous rupture of the vaginal wall in late
pregnant ewes was first described by White (1961), commonly assocuated with
cervical vaginal
prolapse (CVP)