petro mulder 24/ 10/ 2012 - wickupwickup.weebly.com/.../antepartum_hemorrhage.pdf ·...
TRANSCRIPT
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Petro Mulder
24/ 10/ 2012
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Bleeding from genital tract from 24 weeks till term GA of 24 weeks = 500 grams average
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•3 – 5 % of pregnancies
•3 x more in Multiparous > Nulliparous
•Maternal deaths due to APH: 67 % avoidable deaths
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BENIGN:
*HEAVY “SHOW” – most common
PATHOLOGICAL:
*ABRUPTIO PLACENTAE: 1/ 100
*PLACENTAE PRAEVIA: 1/ 200
*VASA PRAEVIA: 1/ 2000-3000
*UTERINE RUPTURE: ≤ 1 % in scarred uteri
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NON-OBSTETRIC CAUSES: *BLEEDING FROM LOWER GENITAL TRACT *CERVICAL: -ectropion -polyps -cervicitis/ infection - Cervical CA *VAGINAL: -infection -neoplasm -trauma -varices *BLEEDING DISORDERS -rare, 1/ 10 000 *UNKNOWN ORIGIN -in 40 % of APH cases no definite cause identified -diagnosis of exclusion
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*GIT – BLEEDING: -hemorrhoids -inflammatory bowel disease -neoplasm *URINARY TRACT - BLEEDING: -infection -stones -neoplasm
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DEFINITION:
IMPLANTATION OF PLACENTA (PARTIALLY / COMPLETELY) IN LOWER SEGMENT OF UTERUS
ETIOLOGY:
-NO DEFINITE CAUSE
-ENDOMETRIAL FACTORS:
Uterine scarring
Excessive / repeated curettage
Congenital uterine abnormalities
-PLACENTAL FACTORS
Placentomegaly
Abnormal formation of placenta
-CONCEPTUS RELATED FACTORS
Delay in development/ maturation of fertilized ovum
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•MULTIPARITY > NULLIPARITY
•AMA
•PRIOR UTERINE SURGERY: C-section, Myomectomy
•PREVIOUS PLACENTA PRAEVIA
•UTERINE MALFORMATION
•ART (ASSISTED REPRODUCTIVE TECHNIQUES)
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*GRADE I:
PLACENTA ENCROACHES ON LOWER SEGMENT, BUT DOES NOT REACH THE INTERNAL CERVICAL OS
*GRADE II:
PLACENTA REACHES INTERNAL OS, BUT DOES NOT COVER IT
*GRADE III:
PLACENTA PARTIALLY COVERS INTERNAL OS
*GRADE IV:
PLACENTA COMPLETELY COVERS INTERNAL CERVICAL OS, EVEN WHEN CERVIX DILATED
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CLASSICAL: CONTEMPO-RARY:
ULTRA-SOUND:
TYPE I MARGINAL
TYPE II LATERAL MINOR
TYPE III
TYPE IV CENTRAL MAJOR
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•PAINLESS PV BLEEDING •ABDOMINAL EXAM: -uterus soft, not tender/ irritable -contractions present/ absent -presenting part not engaged/ high -abnormal/ unstable lie •MATERNAL CVS COMPROMISE •FETAL COMPROMISE •NO PV EXAM ALLOWED!
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MATERNAL COMPLICATIONS:
•MAJOR APH, SHOCK, DEATH
•PPH
•ANEMIA DUE TO CHRONIC HEMORRHAGE
•RH-SENSITIZATION
•COAGULOPATHY/ DIC
•MORBIDLY ADHERENT PLACENTA:
PLACENTA ACCRETA OCCURS IN 10 % OF PLACENTA PRAEVIA
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FOETAL COMPLICATIONS:
*PREMATURITY
*ABRUPTIO PLACENTAE
*FETAL INSULT:
-HIE
-CP
*IUD
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DEFINITION:
PREMATURE SEPERATION OF PLACENTA FROM UTERINE WALL, WITH OR WITHOUT PV BLEEDING, IN A VIABLE GESTATION
TYPES OF ABRUPTIO PLACENTAE:
•CONSEALED
•REVEALED
•MIXTURE
PATHOLOGY:
*HEMORRHAGE INTO DECIDUA BASALIS
*SPLITTING OF DECIDUA
*HEMATOMA OF DECIDUA
*SEPERATION, COMPRESSION & DESTRUCTION OF ADJACENT PLACENTA
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RISK FACTORS: *AMA *↑ PARITY *VASCULAR DISEASE: -HYPERTENSIVE DISEASE IN PREGN, PET, SLE, APLS *MECHANICAL FACTORS: -TRAUMA, SUDDEN DECOMPRESSION (MULTIPLES, POLYHYDRAMNIOS) *SMOKING *DRUGS: -COCAINE *FIBROIDS/ MYOMAS *PROM *AORTA-CAVAL COMPRESSION SYNDROME
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*PV BLEEDING & PAIN
*CONTINIOUS PAIN, NOT ALLEVIATED BETWEEN CONTRACTIONS
1. MILD TYPE:
*ABRUPTIO ≤ 1/3
•PV BLEEDING PRESENT/ ABSENT
2. SEVERE TYPE:
*ABRUPTION > 1/3
*LARGE RETROPLACENTAL HEMATOMA
*PV BLEEDING & PERSISTENT ABDOMINAL PAIN
*”WOODY”HARD UTERUS WITH PAIN & TENDERNESS
*FHR-CHANGES (CTG-pattern)
*MATERNAL HYPOVOLEMIC/ HEMORRHAGIC SHOCK
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MATERNAL COMPLICATIONS:
*HYPOVOLEMIC/ HEMORRHAGIC SHOCK
*PPH
*COAGULOPATHY/ DIC
*AMNIOTIC FLUID EMBOLISM
*RH-SENSITIZATION
*ORGAN SYSTEM DYSFUNCTION/ FAILURE
-ATN
-SHEEHAN SYNDROME
*DEATH
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FETAL COMPLICATIONS:
*PREMATURITY
*IUGR IN CHRONIC ABRUPTIO
*HIE & CP
*FETAL DEATH
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*CLINICAL DIAGNOSIS
*ULTRASOUND:
-EXCLUDE PLACENTA PRAEVIA
-FETAL VIABILITY
-RETROPLACENTAL HEMATOMA
*CTG:
-BRADYCARDIA/ TACHYCARDIA
-SINUSOIDAL PATTERN
*LABORATORY TESTS:
-CONSUMPTIVE COAGULOPATHY: PLATELETS, CLOTTING PROFILE
-LFT, RFT
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DEFINITION:
FETAL BLOODVESSELS FROM CORD/ PLACENTA RUN IN THE MEMBRANES
*ROM → RUPTURE OF FETAL BLOODVESSELS IN MEMBRANES → EXSANGUINATION → FETAL DEATH
*HIGH FETAL MORTALITY (50 – 75 %)
RISK FACTORS FOR VASA PRAEVIA:
1. ECCENTRIC/ VELAMENTOUS CORD INSERTION
2. SUCCENTURIATE LOBE/ BI-LOBAR PLACENTA
3. MULTIPLES
4. PLACENTA PRAEVIA
5. ART (ASSISTED REPRODUCTIVE TECHNIQUES)
6. PREVIOUS UTERINE SURGERY / CURETTAGE
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*MODERATE PV BLEEDING & FETAL DISTRESS (TACHY/ BRADY)
*VESSELS MAY BE VISIBLE/ PALPABLE THROUGH DILATED CERVIX
*VESSELS VISIBLE ON ULTRASOUND TVS (COLOUR DOPPLER)
*DEFINITIVE DIAGNOSIS BASED ON DETECTING FETAL BLOOD:
-FETAL HEMOGLOBIN (KLEIHAUER-BETKE TEST)
-FETAL RBC’s (NUCLEATED)
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SCAR DEHISCENCE:
*MEMBRANES INTACT OVER SCAR, FETUS NOT IN PERITONEAL CAVITY
*SEPERATION LIMITED TO OLD/ PREVIOUS SCAR (FENESTRATION = WINDOW), INTACT OVERLYING PERITONEUM
*USUALLY NOT FETAL DISTRESS/ SEVERE MATERNAL BLEEDING
RUPTURE:
*SEPERATION OF SCAR
*EXTENSION OF SCAR
*ROM WITH EXTRUSION OF FETUS INTO ABDOMINAL CAVITY
*SEVERE MATERNAL HEMORRHAGE & FETAL DISTRESS
*FETAL MORTALITY 35 – 50 %
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1. PREVIOUS UTERINE SURGERY
2. GRANDE MULTIPARA
3. NON-JUDISCIOUS USE OF OXYTOTICS & PROSTAGLANDINS
4. SHOULDER DYSTOCIA
5. FORCEPS
6. TRAUMA
7. UTERINE ABNORMALITIES
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MATERNAL:
-HIGH INDEX OF SUSPICION
-PV BLEEDING ANTE-OR INTRA-PARTUM
-MATERNAL HYPOVOLEMIC/ HEMORRHAGIC SHOCK
FETAL:
-FETAL DISTRESS (CTG-CHANGES)
-STATION OF HEAD & APPLICATION “REGRESSES”, CERVICAL DILATATION “REVERSES”
-DISPLACEMENT OF CERVIX
-FETAL PARTS PALPABLE THROUGH ABDOMINAL WALL
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MATERNAL:
-HEMORRHAGE
-BLADDER RUPTURE
-PPH
-COAGULOPATHY
-DEATH
FETAL:
-RESPIRATORY DISTRESS
-HIE/ CP
-ASPHYXIA
-DEATH
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ABRUPTIO PRAEVIA RUPTURE
ABD. PAIN PRESENT ABSENT PRO-GRESSIVE
PV BLEEDING OLD/ FRESH
FRESH FRESH
DIC COMMON RARE RARE
ACUTE FETAL DISTRESS
COMMON RARE COMMON