postpartum hemorrhage for undergraduate
DESCRIPTION
Undergraduate course lectures in Obstetrics&Gynecology ,Faculty of medicine,Zagazig University ,Prepared by DR Manal BeheryTRANSCRIPT
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Postpartum Hemorrhage
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Definition
Blood loss > 500 ml at vaginal delivery> 1000 ml at Cesarean
ACOG 10% drop in hematocritNeed for blood transfusion
Severe PPH > 1000 ml loss at vaginal delivery
Any amount of blood loss causes S/O Hypovolemic Hemorrhagic Shock - Tachycardia - Hypotension - Reduced urine out
put
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Why it is important?
PPH remained one of the top 3 causes of direct maternal deaths.
Incidence 4% after vaginal delivery
6,5% after CS delivery
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We have 4 problems
Problem 1: almost 50% of deliveries lose >500 ml of blood.
Problem 2: estimated blood loss is often less than half the actual blood loss.
Problem 3: Most of the serious causes of “PPH” have origins prior to the end of the 3rd Stage of labor.
Problem 4: PPH, as defined, is technically misdiagnosed and clinically irrelevant.
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Measuring Blood Loss A key step to EFFECTIVE TREATMENT…..
Underestimation leads to delayed intervention.
Visual estimated amounts of blood loss are far from accurate by as much as 30-50%: especially for very large amounts.
Old methods for estimating blood loss tend to be complex.
(include weighing soaked clothes and pads, collection into pans etc., Acid haematin techniques, Spectrophometric technics and measuring plasma volume changes)
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Measuring Blood Loss in PPH THE BRASSS-V DRAPE
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Advantages of Brasss-V
Simple and practical Low cost: ( Plastic) Accurate: Objective
Can be used in a wide range of settings
Provides a hygienic delivery surface
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CAUSES OF PPHFOUR “ T”s
TONE
TRUAMA
TISSUE RETENSION
THROMBIN
BUT MOST IMPORTANT IS
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Tone”Uterine Atony”90%of causes
- Uterine over distension Polyhydramnios, Multiple
gestations, Macrosomia Prolonged labor: “uterine fatigue” Precipitory labor High parity Chorioamnionitis Retained product of conception Halogenated anesthetic
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TRUMA “Obstetric OR OPERATIVE” “7% of causes” 7% of causes
Obstetric Trauma - Uterine Rupture - Lacerations of the Birth Canal - Operative Trauma Cesarean sections Episiotomies Forceps, Vacuums, Rotations
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Tissue retension “Abnormal placentaion”
- Placenta Previa - Abruptio Placentae - Accreta, increta, percreta
- Vasa previa
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Thrombin “Coagulation Defects
- Sepsis - Amniotic Fluid Embolism - Abruptio Placentae associated coagulopathy - HELLP Syndrome - Dilutional Coagulopathy - Inherited Clotting Disorders - Anticoagulant Therapy
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Thrombin “Coagulation Defects2-3% of causes
- Sepsis - Amniotic Fluid Embolism - Abruptio Placentae associated coagulopathy - HELLP Syndrome - Dilutional Coagulopathy - Inherited Clotting Disorders - Anticoagulant Therapy
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Prevention of Postpartum Hemorrhage
Oxytocin With or soon after deliveryCord traction
Continues tension Gentle pull with contractionUterine massage after placental
delivery
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Goals of Therapy•Maintain the following:
Systolic pressure >90mm HgUrine output >0.5 mL/kg/hrNormal mental status
•Eliminate the source of hemorrhage
•Avoid overzealous volume replacement that may contribute to pulmonary edema
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Management Protocol
• Examine the uterus to rule out atony
• Examine the vagina and cervix to rule out lacerations; repair if present
• Explore the uterus and perform curettage to rule out retained placenta
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On recognition of Hemorrhage
1. Initiate volume replacement with lactated ringers or normal saline.
2. Alert blood bank and surgical team.
3. Control the blood loss.4. Initiate decisive therapy.5. Monitor for complications.
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MANAGEMENT of Uterine atony 1. Explore uterus for retained placental tissue.
2. Uterine massage3Firm bimanual compression
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management of uterine atony Cont’4-Ecobolics “uterotonic agents”
• Oxytocin infusion, 40 units in 1 liter of D5RL
• Methergine 0.2 mg IM • 15-methyl prostglandin F2a, 0.25 to
0.50 mg intramuscularly; may be repeated
• , PGE1 200 mg, or PGE2 20 mg are second line drugs in appropriate patients
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Vaginal exploration
General anesthesia usually best Uterine cavity manual exploration for
retained placenta / uterine rupture
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Vaginal exploration cont’
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Uterine inversion restitution
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Vaginal exploration cont’ Intrauterine balloon Cather
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Bakri Balloon is a tamponade technique that can be used for PPH.
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When medical managament fails
SURGICAL MANAGEMENT
Uterus conserving : NEED OF TIME Definitive - Hysterectomy
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MANAGEMENT”cont’”
If Hemorrhage is not controlled by medications, massage, manual uterine exploration, or suturing lacerations in the birth canal,
then surgical or radiological options must be considered. At this time, start:
1. Packed red blood cell transfusion2. Foley catheter and monitor urine
output
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Selective Artertial Embolization
If the patient is stable and bleeding is not “torrential”, and if interventional radiology is
available, then pelvic arteriography may
show the site of blood loss and therapeutic arterial embolization may suffice to stop the bleeding.
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Uterine artery embolization
Real time X-Ray (Fluoroscopy)
Gelatin Sponges are injected into the bleeding vessel until stasis of flow in target vessel is achieved. Acess via RTfemorals to internal iliac and subsequently the uterine arteries
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Pre embolization vs. .post embolization
Pre Embolization Post Embolization
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Laparotomy for Obstetric Hemorrhage:
- Bleeding at Cesarean section - “Torrential” Hemorrhage - Pelvic hematoma (expanding) - Bleeding uncontroled by other means
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AT laparotomy
Consider vertical abdominal incision General anesthesia usually best Get Help! Avoid compounding problems by making
major mistakes Direct manual uterine compression /
uterotonics Direct aortic compression Modified B-Lynch Suture for atony: #2 chromic Ligation of uterine and utero-ovarian vessels:
#1 chromic
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B-Lynch suture vs Modified B-Lynch Suture
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posterior view of uterus showing modified B-Lynch Technique
Anterior view of uterus showing modified B-Lynch Technique
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Cho’s Multiple Square Suture
Hayman Uterine Compression Suture
Global Stitch By Dr. Gunasheela Bangalore
OTHER COMPRESSION SUTURES
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NIL - IF DONE PROPERLY
TOO TIGHT COMPRESSION -- CUT THROUGH STITCH
UTERINE NECROSIS
INTRAPERITONEAL BLEED
COMPLICATIONS
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Uterine artery ligation
http://t3.gstatic.com/images?q=tbn:ANd9GcQOaGGcLP1wYmyIsIQ8fyhFBBwhABO3K3uFHL4V7Dfd51ePIddvGg
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Sutures are placed to ligate the ascending uterine artery and the anastomotic branch of the ovarian artery.
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Internal iliac (hypogastric) artery ligation
50% success rate Desirous of children Experience of surgeon Steps: Palpate common iliac bifurcation Ligate at least 2-3 cm from bifurcation #1 silk. Do not divide vessel
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Repaire of cervical laceration Palpate uterine cavity to assure its integrity
Full thickness mucosal repair above the apex
Contionous interlocking absorbable sutures
Hematoma incised,clot removed,bleeding vessels ligated ,oblitrate defect with interlocking sutures
Antibiotics& vaginal pack for 24 hours .
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Uterine Rupture
Prior Cesarean section = 1-2%
Modern obstetrics = 1/10,000 to 1/20,000 in unscarred uterus In “Neglected labors”, this accounts for many maternal deaths where modern obstetrical care is not
available.
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Classic Symptoms of Uterine Rupture
Fetal distress Vaginal bleeding Cessation of labor Shock Easily palpable fetal parts Loss of uterine catheter
pressure
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Management of Uterine Rupture Laparotomy
Debride and repair in 2-3 layers of Maxon/PDS
Subtotal Hysterectomy Total Hysterectomy
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Management of Abnormal Placentation Diagnosis of exclusion after adressing tone and
truma Curettage of uterine cavity Localized resection and uterine repair:
(Vasopressin 1cc/10cc N.S-sub endometrial) Leave placenta in situ
If not bleeding: Methotrexate Uterus will not be normal size by 8 weeks
Uterine, utero-ovarian, hypogastric artery ligation Subtotal/ total abdominal hysterectomy
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Post-Hysterectomy Bleeding Patient usually has DIC – Rx with whole
blood, FFP, platelets, etc. Transvaginal or transabdominal (pelvic) pressure pack
Bowel bag with opening pulled through vagina cuff/ abd. Wall
Stuff with 4 inch gauze tied end-to-end until pelvis packed tight
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Military Anti-Shock Trousers (MAST)
Increases pelvic and abdominal pressure to reduce bleeding
Can use at any point in the procedure
Used when exploration is to be avoided
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Secondary PPH
Defined as excessive bleeding 24 hrs to 12 weeks postpartum.
Incidence is about 1 percent of women.
Theory is that thought to be atony or subinvolution of placental site from retained products or infection.
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Management of Secondary PPH Evaluate for underlying disorders
(coagulopathies). For atony give uterotonics. If large amount of bleeding, fever
uterine tenderness, or foul smelling discharge treat for endometritis.
Consider suction currettage.
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Case 1
A 22y/o G1P0 was delivered by vaccum assisted vaginal delivery approximately 2 hours ago. She was induced for mild preeclampsia at 37 weeks and required pitocin augmentation for several hours prior to needing an operative vaginal delivery for fetal distress. She had a second degree laceration that was repaired, but she has soaked a whole pad in the last 15 minutes and the nurse would like you to evaluate her.
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Case 2
A 22 yo G4P3 approximately 4 days s/p delivery presents at OB triage and mentions to you that she feels lightheaded and has been having bleeding at about a pad an hour for the last 2 days.
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Case3
A 34yo G6P6 patient at term has just delivered a 4000gm infant after second stage of labor lasting 3 ½ hours. The placenta delivered spontaneously and the patient is bleeding briskly.
What is most probable cause? What the next step?
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