Chapter 16: Postpartum Hemorrhage (PPH) Flashcards
Post-partum Hemorrhage (PPH)
blood loss greater than 500 mL after vaginal birth; 1000 mL or more after cesarean birth
- hematocrit levels decrease 10% from pre to post-birth
- may be a need for a red blood cell transfusion because of anemia or hemodynamic instability
Recognizing Obstetric Hemorrhage in a timely manner: Indicators
nurse should quantify blood loss immediately after birth and remain alert to indicators
- maternal heart rate >110 bpm
- 15% drop in blood pressure
- oxygen saturation < 95%
Accurately Determining Blood Loss
after childbirth, the nurse weighs all pads, linens, clothing, and clots in the placental basin on a gram scale
>worksheet can be used to facilitate the process of tracking cumulative blood loss
An early (primary) postpartal hemorrhage
occurs within first 24 hours after childbirth
-likely within first 4 hours; the blood flow to the uterus is between 500 and 800 mL/min, and the placental site contains multiple exposed venous areas and low resistance
>4 T’s
-tone
-trauma
-tissue
-thrombin
>lack of uterine tone (atony) and genital tract trauma are most common conditions that cause PPH
Late (secondary) post-partal hemorrhage
usually within first 2 weeks after birth
- retained placental fragments most common cause
- other causes: subinvolution, uterine infection, and inherited coagulation defects such as von Willebrand (vW) disease (deficiency of von Willebrand factor, protein required for platelet adhesion)
4 T’s: Tone
uterine atony; failure of the uterine myometrium to contract and retract following birth
- results in non-compression of uterine arteries and veins at the placental implantation site, thereby preventing hemostasis
- hallmark: soft uterus filled with clots and blood
4 T’s: Tone
uterine atony; failure of the uterine myometrium to contract and retract following birth
- results in non-compression of uterine arteries and veins at the placental implantation site, thereby preventing hemostasis
- hallmark: soft uterus filled with clots and blood (evident by soft, blood filled uterus)
4 T’s: Trauma
during second stage of labor, soft tissue trauma (from rapid labor, operative delivery, and episiotomy) can result in genital tract lacerations
-if the source of hemorrhage is from genital tract lacerations, the uterus is firm and midline
Clinical for post-partal blood loss
in the presence of a firm uterus, continual vaginal bleeding in a slow but steady trickle, with or without clots, can result in significant blood loss
>most maternal deaths from PPH result from ineffective management of slow, steady blood loss
Clinical Alert for post-partal blood loss
in the presence of a firm uterus, continual vaginal bleeding in a slow but steady trickle, with or without clots, can result in significant blood loss
>most maternal deaths from PPH result from ineffective management of slow, steady blood loss
4 T’s: Tissue
careful examination of the placenta is component standard of care; hence, retained placental tissue is an uncommon cause of early PPH
-if lobe of the placenta are missing, midwife or physician explore the patients uterus to remove them
Risk Factors for Postpartum Hemorrhage from Tissue Trauma
- rapid second stage labor
- rapid/precipitous labor (less than 3 hours from onset to delivery)
- operative vaginal deliveries
- fetal manipulation (extrauterine or intrauterine version, corkscrew maneuver for shoulder dystocia; a progressive 180 degree manual rotation of the babies posterior shoulder to release the impacted anterior shoulder)
- large episiotomies
- fetal macrosomia
- cesarean birth
- uterine rupture
Recognizing causes of retained placenta
bedside transabdominal ultrasound used to locate the retained products, and manual removal under anesthesia
-risk factors: previous retained placenta, preterm birth, grand multiparity, previous dilation and curettage, previous abortions, induced labor, older maternal age, preeclampsia, and oxytocin use
4 T’s: Thrombin
refers to problems with coagulation
-disorders of the coagulation system and platelets usually do not result in excessive bleeding during immediate post-partum period
>preexistent maternal factors such as low fibrinogen levels and idiopathic thrombocytopenia (ITP) and acquired pathology such as HELLP syndrome, disseminated intravascular coagulation (DIC), sepsis, and abruptio placentae require vigilant care and possible hemorrhage after birth
Treatment
ergonovine medication (Ergotrate or Methergine), antibiotics, and if necessary, dilation and curettage to remove placental fragments