module 11 Flashcards
what is the leading cause of maternal mortality?
postpartum hemorrhage
what is the estimated blood loss for a woman considered to be having a hemorrhage?
> 500 ml following a vaginal birth and >1000 ml following a c-section
-any amount of bleeding that places the mother in hemodynamic jeopardy
primary vs delayed hemorrhage
a primary hemorrhage is within the first 24 hours
delayed or late ones happen from 24 h to 12 weeks after birth
causes of postpartum hemorrhage
- uterine atony
- lacerations of the genital tract
- episiotomy
- retained placental fragments
- uterine inversion
- coagulation disorders
- hematoma of the vulva, vagina, or sub peritoneal areas: unremitting pain and pressure
the four Ts of PP hemorrhage
tone, tissue, trauma, thrombin
tone
- abnormal uterine contractility. risk factors include prolonged labour, multiple gestations, oxytocin augmentation, polyhydraminos.
- inflammation due to infection (chorioamnionitis)
tissue
placental complications
- placenta accerta, incerta, percreta: retain placental products, risk factors includes multiple gestation
- placenta praevia: the blockage of cervix
- placental abruption
trauma
physical injury: laceration of the cervix, vagina or perineum
causes include malpresentation, and instrumental delivery
-injury during caesarean section
-uterine rupture form previous trauma
-grand multiparty previous vertical uterine incision
thrombin
- congential coagulation disorders: hemophilia, vWD
- acquired coagulopathy: DIC, hyperfibrinolysis, pharmacologic anticoagulation
- the major coagulopathy independently associated with PPH is low fibrinogen levels
signs of PPH
hypotonic uterus, bleeding with a contracted uterus, inversion of the uterus (life threatening and occurs in 1 in 2500 births), sub involution of the uterus (late postpartum bleeding)
hemorrhagic shock resulting from hemorrhage
organ perfusion may be severely compromises and potentially cause death
- medical management: restore blood volume
- nursing interventions: monitor vitals (HR, BP), massage uterus, admin meds as ordered(fluid and blood replacement therapy), monitor for sighs and symptoms of shock emotional support to pt and fam
uterotinics vs tocolytics vs methylergonovine (methergine) vs hemabate vs misoprotosl (cytotec)
uterotonics are medications to contract the uterus
tocolytics are meds that relax the uterus
methergine is contraindicated in hypertension, preeclampsia, and cardiac disease
-hemabate: contraindicated in asthma and hypertension
-cytotec: contraction of the uterus
therapeutic management of hemorrhage
focus on the underlying cause, uterine massage, removal of retained placental frags, antibiotics for infection, repair of saceration
DIC
clotting and anticlotting mechanisms occur at the same time
- it is not a primary condition but is usually secondary to pregnancy complications such as preeclampsia, and hemorrhage
- unusual spontaneous bleeding from gums and nose; oozing, trickling or flow of blood from incision/lasceration; petechiae, hematuria
- usually a transfer to the icu and get labs: CBC, blood type and cross, clotting factors
nursing intervetnion DIC
admin fluid volume replacement (blood and blood products)
admin pharmacological interventions like antibiotics, vasoactive meds and uterine tonic meds
admin supp o2
protect from injury
DVT an pulmonary embolism
blood clot or clots formed inside vessels. unilateral swelling of the leg
causes: venous stasis, hypercoagulation, inflammation (thrombophlebitis), partial obstruction of the vessel
incidence: 1/1000-2000 women
thromboembolitic disease types
superficial venous thrombus
deep venous thrombus
pulmonary embolism
superficial venous thrombus
involves superficial saphenous venous system: most common PP usually comes with pain and tenderness in the lower extremity with warms, redness and a hardened vein over the thrombus
DVT
lower extremitis, varuous veins from foot to illiofemoral region. this is the most common during pregnancy. causes unilateral leg pain, calf tenderness, swelling, warmth, possible positive Homans sign
may be asymptomatic
PE
a complication of a DVT, the clot travels to the pulmonary artery and occludes blood flow to the lungs. causes dyspnea, tachypnea, tachycardia, apprehension, pleuritic chest pain, cough, hemoptysis, elevated temp, syncope, cardiac arrest