Postpartum Hemorrhage Flashcards
refers to excessive blood loss during or after the third stage of labor.
postpartum hemorrhage
normal blood loss is _ for vaginal delivery and _ for CS.
500 mL
1000 mL
leading cause of maternal mortality.
postpartum hemorrhage
most dangerous time at which hemorrhage is likely to occur is during the _ postpartum.
first hour
2 classifications of PPH
• early or primary
• late or secondary
class of PPH that occurs in the 1st 24 hours after delivery.
early or primary PPH
class of PPH that occurs from the 1st 24 hours to 6 weeks postpartum.
late or secondary PPH
4 causes of PPH: 4 T’s
• tone
• tissue
• trauma
• thrombosis
cause of PPH: refers to failure of the uterine myometrial muscle fiber to contract and retract.
tone
cause of PPH: presence of retained placental tissues prevents uterine contractions resulting to failure to seal off bleeding vessels.
tissue
cause of PPH: _ of postpartum hemorrhage is due to _ anywhere in the genital tract.
20%
trauma
cause of PPH: clot formation on placental site stops oozing of blood from uterine blood vessels.
thrombosis
cause of PPH: disorders of the coagulation system and platelets, whether preexistent or acquired, can result in bleeding or aggravate bleeding.
thrombosis
causes to lose tone in the uterus: over distention due to (3) MHM
• macrosomia
• hydramnios
• multiple pregnancy
causes to lose tone in the uterus: fatigue due to (3) PPO
• prolonged labor
• precipitate labor
• oxytocic drugs
causes to lose tone in the uterus: drugs including (3) AMN
• anesthesia agents
• MgSO4 (magnesium sulfate)
• nifedipine
causes to lose tone in the uterus: infections like (3) CES
• chorioamnionitis
• endomyometritis
• septicemia
causes to lose tone in the uterus (7): OFIDSUD old fat iguanas dance so unusually different
• overdistention
• fatigue
• infection
• drugs
• (uterine) structural abnormality
• unusual placental site
• distention with blood
tissue causes PPH due to (3): PPA
• presence of a succenturiate or accessory lobe
• preterm gestation especially in less than 24 weeks gestation
• abnormal adhesion such as accrete, increta and percreta
trauma causes PPH due to (4): LECH
• lacerations
• episiotomy
• cesarean section
• hematoma
cause of PPH: thrombosis includes preexistent coagulation disorder such as (1)
thrombocytopenic purpura
cause of PPH: thrombosis includes acquired disorders such as (2) HD
• HELLP (hemolysis, elevated liver enzymes, low platelet count)
• DIC (disseminated intravascular coagulation)
cause of PPH: thrombosis includes dilutional coagulopathy, in which clotting factors are reduced with aggressive transfusion of (2) CP
crystalloids
packed red blood cells
types of disorders included in thrombosis (3): PAD
preexistent coagulation disorder
acquired disorders
dilutional coagulopathy