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Antepartum Hemorrhage. Abdulah Al-Tayyem;MD;JBOG Consultant Ob&Gyn Urogynaecology Zarka Govern. Hospital. Definition: APH is bleeding from or within the genital tract after 24 W of gestation. Causes: Placenta previa the most common causes Abruptio placentae
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Antepartum Hemorrhage Abdulah Al-Tayyem;MD;JBOG Consultant Ob&Gyn Urogynaecology Zarka Govern. Hospital
Definition: APH is bleeding from or within the genital tract after 24 W of gestation. Causes: • Placenta previa the most common causes • Abruptio placentae • Rupture uterus • Local causes: trauma,infection,tumors. • Vasa previa
Placenta previa Is the implantation of the placenta in the lower uterine segment with different grades of encroachment on the cervix. • Bleeding is: -painless -causless
APH Per vaginam blood loss >15 ml after 20 weeks’ gestation 5% of all pregnancies Accounts for 20 -25% of perinatal mortality 7
Abruptio Placentae • Is premature separation of a normally implanted placenta, may be precipitated by a sudden increase in blood pressure or trauma • Fetal parts are difficult to feel. • Feta heart sound may be absent • Sings of hypovolemia • Coagulopathies occur in 30% of cases
Diagnosis History: • Present obstetric history • Symptoms of hypovolemia • Symptoms of pre-eclampsia • Lower abdominal pain or colic • The presence or absence of fetal movements • History of ROM or labour pains • Previous uterine operations • History of sexual intercourse before onset of bleeding • History of trauma or recent surgery
Physical examination • General examination:-tachycardia,hypotenstion -sings of shock -lower limb edema. • Abdominal examination: -abdominal tinderness,or rigidity -fundable level -FHS -consistency of the uterusز • Pelvic examination: -Don not perform a digital vaginal examination at this stage. • -Inspect the external genitalia and vagina for: -amount of blood loss -sings of trauma or infection.
Investigations • Laboratory investigations: -ABOblood group and Rh type -Crossmatch at2 units of blood -CBC -Fibrinogen, PTT, PT,CT -Serume creatinine or BUN -Urine analysis for protein and RBCs
Perform a transvaginal ultrasound scan on all women in whom a low-lying placenta is suspected from their transabdominal anomaly scan (at approximately 20–24 weeks) to reduce the numbers of those for whom follow-up will be needed. • Transvaginal ultrasound is safe in the presence of placenta praevia and is more accurate than transabdominal ultrasound in locating the placenta.
Ultrasound • Confirm the fetal viability • Localize the site of placenta,and its relation to the cervix • Estimating the gestational age • Detecting the presence of retroplacental hematoma • In case of sever bleeding, do not wait for an US examination .Begin first aid management and the quickly start active management . • Even if the amount of bleeding is mild NEVER perform PV examination until placenta previa has been excluded by US
Diagnosis of Antepatrm Hemorrhage • Painless vaginal bleedingafter 24w.? • Symptoms and sings: -shock -bleeding may be precipitated by intercourse -relaxed uterus -normal fetal condition -fetal presentation not in the pelvis/ lower uterine pole feels empty. • Dg:Placenta previa
Vaginal bleeding after 24 w,intermitent,or constant abdominal pain? • Symptoms and sings: -Shock -tense/tender uterus -decreased /absent fetal movements. -fetal distress/absent fetal heart sound. Dg: Abruptio placentae. ( R/O co-exciting PIH)
Bleeding(intra-abdominal and/or vaginal)? • Sever abdominal pain(may decreas after rupture)? • Previous uterine scar? - shock -abdominal distention/free fluid. -abnormal uterine contour -tender abdomin -easily palpable fetal parts -rapid maternal puls -absent fetal movements and FHS Dg: Ruptured uterus
Mild vaginal bleeding after 24 w(mild)? • Symptoms and sings: -clinically stable -fetal assessment showed fetal distress that can not be explained by the mild bleeding. Dg : Vasa previa
Complications of placenta previa -shock -postpartum hemorrhage • Women with placenta previa are at high risk for PPH and placenta accreta/increta; a common finding is at the site of a previous cesarean section
Complications of abruptio placentae • Maternal shock • Fetal death • Uterine atony • Amniotic fluid embolism • Caogulopathy( 30%) • Renal failure The principal cause of maternal death is renal failure due to prolonged hypotension . Don not underestimate the amount of the hemorrhage
Management • General rules: -call for help -keep women NPO -remember that mother and the neonate require evaluation and intervention if needed
First aid management • Insert 2 wide bore cannulae • Blood for CBC,crossmatch • Immediately star iv crystalloid solutions • Provide 100% oxygen via mask • Warm the women • Insert Foley catheter • Monitor blood pressure and pulse/ 5 min • Monitor urine output /hour
Indications of when to terminate pregnancy • Women in labour • Bleeding is heavy(evidente or hidden) manifested by shock • Gestational ageequals or more 37 w • There is fetal distress • There is IUFD and /or fatal congenital anomalies by US
When to use conservative management • Bleeding is light or has stopped AND • The fetus is alive AND • The fetus is premature. • Cases of abruptio placentae which are diagnosed only on US examination, with no clinical finding( no bleeding, no shock, no tender or tonically contracted uterus)
In abruptio placentae: • When the clinical diagnosis is clear • Or in the presence of acute fetal distress:…. Do not waste your time for US examination. • US is neither sensitive nor specific diagnosis modality in abruptio placentae
Monitoring during hospital say • Check pulse every 3o min/2h, then hourly/6h, then every 4 h. • Perform gentle uterine massage/30 min APH predispose for PPH • Check for vaginal bleeding • Check urine output/ 2h
Conditions that should be met before discharge • No active bleeding • No fever • Open bowel • Stable general condition • Satisfactory urine output • No wound complications
Management of Placenta praevia in a Pregnancy of viable gestational age - + Bleeding - Expectant management Fetal distress + + C/Section Fetal lung maturity - - Sono assessment q 3-4 weeks - + Placental migration Bleeding Trial of labor - + Complete resolution + Double set-up Trial of labor (low-lying only) 28
Comparison of presentation of abruption v. praevia v. rupture 29
Associated with velamentous insertion of the umbilical cord (1% of deliveries) • Bleeding occurs with rupture of the amniotic membranes (the umbilical vessels are only supported by amnion • Bleeding is FETAL (not maternal as with placenta praevia) • Fetal death may occur with trivial symptoms
Comparison of presentation of abruption v. praevia v. rupture