Haemorrhage during late pregnancy
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Transcript of Haemorrhage during late pregnancy
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PRESENTED BY KRIPA SUSAN KURIEN
2 ND YEAR MSC NURSING
Haemorrhage during late pregnancy : Placenta previa,
Abruptio placenta
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Meaning of Antepartum haemorrahge
Any bleeding that occurs during the late period of pregnancy is termed as Antepartum hemorrhage
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Definition
Haemorrhage from the genital tract in late pregnancy after the 24 week of gestation and before the onset of labour is referred to Antepartum haemorrhage
orIt is defined as the bleeding from or into the
genital tract after the 28th week of pregnancy but before the birth of the baby(the first and the second stage of labour)
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CONTD DEFINITION...
“bleeding into or from the genital tract after 24 weeks of gestation”
“ Bleeding from the female genital tract anytime after fetal viability but before delivery”
WHO
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INCIDENCES
It affects 4% of all pregnancies.
It is associated with increased risks of fetal and maternal morbidity and mortality
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CAUSES AND CLASSIFICATION
UNEXPLAINED (25% ) EXTRAPLACENTAL
OR (5%)
INDETERMINATE LOCAL CERVICO VAGINAL LESION
trauma, cervical polyp, carcinoma
cervix, genital varicosities, vasa pravia
vulvo vaginal infections , cervicitis
APH
PLACENTAL BLEEDING (70%)
PLACENTA ABRUPTIO PRAEVIA PLACENTAE
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Causes Placenta praevia Abruptio placentae Distal genital tract / gynaecological bleeding Unclassified bleeding Abnormal placentation Abnormal placental shape Vasa praevia (south australian prenatal pratice
guidelines)
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Causes and incidence
Abruptio placenta (1 in 100 pregnancies) 40%
Placenta previa (1 in 200 pregnancies) 20% Unclassified 35% Lower genital tract lesion 5%
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PLACENTA PRAEVIA
DEFINTIONWhen the placenta is implanted partially or
completely over the lower uterine segment orOccurs when the implantation of the
trophoblast takes place in the lower uterine segment
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Incidences
80% in multiparous mothers Age greater than 35Presence of uterine scar Prior placenta praeviaMultiple pregnanciesDevelopment of abnormal large placenta
(multi fetal pregnancies)
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Etiology
Exact cause is not knownFollowing theories is proposed DROPPING DOWN THEORY- Fertilized ovum drops down and implanted in
the lower segment Poor decidual reaction in upper uterine
segmentFailure of zona pellucida to disappear in timeThoery explains the development of central
placenta praevia
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Persistence of choronic activity: in the decidua capsularis and its subsequent development into the capsular placenta which comes in contact with decidua vera of the lower segment – explain formation of lesser degree of placenta praevia
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Defective decidua Results in spreading of the chorionic villi over
a wide area into the uterine wall to get nourishment
During process , placenta gets membraneous and may invade the underlying decidua and they also encroach into the lower uterine segment
Explains the cause for development of placenta accreta
Big placenta in case of twins
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Predisposing factors of placenta praevie
Multi parity Increased maternal ageh/o of previous caesarean section or scars in
uterusPlacental size and abnormality Smoking
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Pathological anatomy
Placenta- may be large and thin, often tongue shaped extension from the main placental mass, extensive areas of degeneration with infarcation and calcification , placenta may be morbidly adherent( due to poor decidua formation)
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Contd.....Umbilical cordCord may be attached to margin( battledore)
or into the membranes( velamentous)Insertion of cord close to the internal os or
fetal vessel may run across the internal os in velamentous insertion leads to vasa praevia
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Contd......
Lower uterine segmentbecome soft and and more friable , due to
increased vascularity
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Types or degrees Type- 1( low lying)- major part of the placenta
is attached to the upper segment and only the lower margin encroaches onto to the lower segment but not upto the os
Type 2 ( marginal ) placenta reaches the margin of the internal os but doesnot cover it
depending on position: type 2 a anterior & type 2b posterior
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Typr 2b posterior or dangerous placentabecause of the curved birth cannel, major
thickness of placenta overlies the sacral promontory ,thus reducing antero posterior diameter of inlet , prevent engagement of presenting part
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TYPE 3- ( Incomplete or partial central) – the placenta covers the internal os partially ( covers the internal os when closed , but doesnot when fully dilated )
Type 4- ( central or total) placenta completely covers the internal os even after it is fully dilated
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Also, classified , clinical purposeMild degree- type 1,and 2Major degree- type 2 posterior , 3 and 4
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Pathophysiology or cause for bleeding
Placental growth slows down in later months
Lower segment progressively dilates Inelastic placenta sheared off wall of
lowersegment
Opening up of utero placental vessels
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Clinical featuresSYMPTOMSVaginal bleeding – features sudden onset,painless,
causeless and recurrent SIGNSAbdominal examinationsize of uterus is proportionate to period of gestationUterus feel relaxed , soft, elastic without tendernessPresence of malpresentation is frequent Head is floating in contrast to period of gestationFHS is usually present , unless major separation is
seen
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Contd..
VULVAL INSPECTIONTo note for bleeding presences, and character
of bleed – bright red or dark cloured , and amount
Placental praevia bleeding – bright red
Vaginal examination not to be done outside ot
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DIAGNOSIS
LOCALISATION OF PLACENTA
( PLACENTOGRAPHY)
MAGNATIC
RESONANCE
IMAGING
CLINICAL
INTERNAL EXAMINATION
DIRECT VISUALISATION
EXAMINATION OF PLACENTA
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Differential diagnosis
Confused with other causes of bleeding in later months
Vasa praevia- unsupported umbilical vessels in vilamentous placenta , lie below the presenting part and run across the cervical os
Vessels are torn either spontaneous OR during rupture of membranes
Colour flow doppler helps in the diagnosis
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Contd...
Local cervical lesions -Differentiated using speculum examination
Circumvallate placenta : bleeding is slight and diagnosis made after
examination the placen ta after delivery
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ComplicationsMaternal FetalMATERNAL 1. during pregnancy : antepartum
haemorrhage with varying degree of shock, malpresentation , premature labour
2. During labour : early rupture of membranes, cord prolapse, slow dilation of cervix, intrapartum haemorrhage, increased incidence of operative interference, postpartum haemorrhage , retained placenta
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Contd.....
3. during puerperium: SEPSIS( operative interfernce , placenta site near to vagina , subinvolution, embolism
FETAL low birth weight babies , asphyxia ,
intrauterine death birth injuries , congenital malformations
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MANAGEMENT
PREVENTIONTo minimize risk , following guidelines are
followed Adequate antenatal care Antenatal diagnosis – using USG .and
periodic examinations Warning haemorrhage – not to be ignored Family planning and limitation of births
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Contd...
1.AT HOMEImmediately put to bed, assess the blood
loss , gentle abdominal examination to note the height of the uterus ,to ausculate FHS , VAGINAL EXAMINATION NOT DONE
2. TRANSFER TO HOSPITALArrangement to be made to shift to the
nearest hospital as quick as possible( equipped with facility for emergency cs)
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3. TREATMENT ON ADMISSION
IMMEDIATE ATTENTION FORMULATION OF LINE OF
Amount of blood loss treatment
Blood samples to be taken Infusion of normal saline, crossed matched blood Gentle abdominal palpation &auscultation(note FHS) Inspection of vulva ( to note presence of bleeding)
EXPECTANT ACTIVE
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Expectant treatment 1.Policy advocated – macafee nd johnson 19452.Vital prequites- availability of blood
transfusion, facilities for c section to be avaliable for 24 hours
3.Selection of cases – mother in good health status , duration of pregnancy less than 37 weeks , active vaginal bleeding is absent , fetal well being is assured
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4. conduct of expectant treatmenta) Bed rest with bathroom privilages b) Investigation like hb, blood grouping , urine
for proteinurea ,c) Periodic examination of vulval pads and fetal
surveillance with usg at intervals of 2-3 weeks
d) Supplementary heamatintics – blood loss to be replaced by cross matched blood
e) Gentle speculum( cusco’s) examination made – rule out local cervical and vaginal lesions
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TERMINATION OF EXPECTANT TREATMENT
Treatment carried upto 37 weeks followed by termination
Premature termination done: recurrence for brisk haemorrhage , fetus is dead, fetus congentially malformed
Steriod therapy – indicated if pregn is less than 34 weeks
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ACTIVE INTERFERENCE
Indications : 1. bleeding occurs at or after 37 wk of
gestation2. pt is in labour3. pt is in exsanguished state 4.Bedding is continuous5. baby is dead Also the contraindication for putting pt to
expectant treatment
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DEFINITVE TREATMENTInstituted soon following hospitalisation or
following expectant managementInvolves 1. vaginal examination : followed by low
rupture of membranes or caesarean section2. caesarean section without internal
examination
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1.VAGINAL EXAMINATION
Double set up examination done in ot, following everything ready in ot
Contraindications:Pt in exsanguished state Diagnosed of major degree of placenta
praevia (usg)Associated complication factors and previous
history of caesarean section
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A.low rupture of membranes :Aim – induce labour by low rupture
membranes using kochers forceps ( in lesser degree type 1 and typr 2 anterior)
Finger inserted to exclude cord prolapse Oxytocin drip may be started , if not
contraindications Aminiotomy – if fails to stop bleeding or
initiate labour, then caesarean section to be done
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Percautions during vaginal birth:Active step be to be taken to restore blood
volumeMethergin 0.2mg given following delivery ant
shoulder Proper examination of the cervix following
delivery Baby’s blood hb to be checked
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B.CAESAREAN SECTIONIndicationSevere degree of placenta praevia Lesser degree of placenta praeviaComplication of factors are associated with
lesser degree of placenta praevia where vaginal delivery is unsafe
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2. Caseraen section without internal examination
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SCHEME OF MANAGEMENT OF PLACENTA PRAEVIA IN HOSPITAL
All APH patients are to be admitted
Expectant Treatment Active Interference No active bleeding bleeding continues Pregnancy <37 wks Ultra sonography pregnancy >37wks
Placental edge is clearly 2-3 cm placental edge within 2cm of
Away from the internal os. the internal os or placenta praevia.
Vaginal delivery Caesarean delivery Caesarean
delivery
APH
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PROGNOSIS
MATERNAL: reduction of maternal deaths in placenta preavia due to 1. early diagnosis
2. omission of internal examination 3.free availability of blood transfusionPotent antibioticsWider use of caesarean section
FETAL: Reduction in death due to judicious extention of expectant treatment
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ABRUPTIO PLACENTA
DEFINITIONForm of antepartum haemorrhage where
bleeding occurs due to premature separation of normally situated placenta
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Types
1.Revealed : following seperation of placenta , the blood insinuates downwards between the membranes and the decidua, blood seen out of the cervical cannal
Common type
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2. concealed : blood collected behind the separated placenta or between the membranes and decidua
Collected blood prevented from coming out of cervix by presenting part which presses on lower segment
Blood percolates into amniotic sac after rupturing themembrane
Blood not visible
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3. MIXED : part of blood collected inside (concealed) and a part is expelled out ( revealed)
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INCIDENCES AND SIGNIFICANCES
1 in 200 deliveries Significant cause of perinatal mortality( 15-
20%) and maternal mortality( 2- 5%)
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RISK FACTORS
Increased age & parity. Hypertensive disorders. Preterm ruptured membranes. Multiple gestation. Polyhydramnios.
Smoking. Cocaine use. Prior abruption. Uterine fibroid. Trauma
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ETIOLOGYA. Hypertension in pregnancy B. Trauma – attempted external cephalic
version, road traffic accident or blow on abdomen, needle puncture of aminocentesis
C. Sudden uterine decompression – lead to decreased SA of uterus hence in placental seperation
D. Short cordE. Supine hypotension syndromeF. Placental anomalyG. Folic acid deficiency
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Contd...
Torsion of uterus Cocaine abuse Thrombophilias Prior abruption
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Types of Abruptio Placentae:
Clinical manifestation of haemorrhage
Ultrasonographic localization of haemorrhage
•The bleeding remains confined inside the uterus without any evidence of external bleeding. It is a severe form.—Concealed type.
• Retro placental—Between placenta and myometrium.
• The bleeding appears as vaginal bleeding. It is a mild form.—Revealed type .
• Sub chorionic—Between the placenta and the membranes.
•Both concealed and revealed type—Mixed type.
• Pre placental—Between placenta and the amniotic fluid.
•Blood may percolate through the layers of myometrium upto serous coat– Couvelaire uterus.
APH
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CONVELAIRE UTERUS described by convelaireSevere form of concealed haemorrahge Massive intravasation of blood into the
uterine musculature upto the serous coat
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Depending upon the degree of placental abruption..
Grade 0- clinical features absent. Grade 1- a) Vaginal bleeding is slight, b) Uterus is
irritable tenderness may be minimal or absent, c) Maternal BP and fibrinogen levels unaffected, d) FHS is good
Grade 2- a) Vaginal bleeding mild to moderate, b) Uterine tenderness is always present, c) Maternal pulse ,BP is maintained, d) Fibrinogen , e) Shock absen, f) Fetal distress or fetal death occurs
Grade 3- a) Bleeding is moderate to severe or may be concealed, b) Uterine tenderness is marked, c) Shock is pronounced, d) Fetal death is the rule, e) Associated coagulation defect or anuria may complicate.
APH
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Clinical Features:Symptoms Revealed type Concealed type
• Character of bleeding
Abdominal discomfort and vaginal bleeding ( dark ).
Continuous abdominal pain and slight bleeding.
• General condition Proportionate to visible blood loss, shock is absent.
Shock may be pronounced which is out of proportion to visible blood loss.
• Pallor Related to blood loss. Severe pallor.
• Features of pre-eclampsia
May be absent. Frequent association.
• Uterine height Proportionate to period of gestation.
Disproportionately enlarged and globular.
• Fetal parts & FHS Present . Absent .
• Urine output Normal . Usually diminished.
APH
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Laboratory Investigation:Investigation Revealed type Concealed type
• Blood: Hb% Low value proportionate to the blood loss.
Markedly lower, out of proportion to the visible blood loss.
• Coagulation Profile
Usually unchanged. Clotting time increasedFibrinogen level lowPlatelet count low.
• Urine for protein May be absent. Usually present.
• Confusion in Diagnosis
With placenta praevia.
With acute obstetrical gynecological surgical complication.
APH
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DIFFERENTIAL DIAGNOSIS
A. REVEALED TYPE : confused with placenta praveia
B. MIXED OR CONCEALED:rupture uterusrectus sheath hematomaappendicular or instentinal perforationtwisted ovarian tumorvolvulusacute hydraminoustonic uterine contraction
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Complications of Abruptio Placentae:
Maternal: 1. Revealed type: Maternal death is rare. 2. Concealed type: Haemorrhage Blood coagulation
disorder Shock Oliguria and anuria Puerperal sepsis Postpartum haemorrhage
due to atony of the uterus.Fetal: 1. Revealed type: Fetal death is to extent of 25-30% 2. Concealed type: Fetal death is high( 50-100%)
due to prematurity and anoxia due to placental separation.
APH
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Management
1. PREVENTION2. TREATMENT 1. PREVENTION – aims at eliminating
known factors that cause risks, correction of anaemia, prompt detection and institution of treatment
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2. TREATMENT1. AT HOME : Arrangement to be made for
shift the patient to the hospital 2. IN HOSPITAL: A. REVEALED TYPEa) Assessment of case : amt of blood loss,
maturity of fetus b) Preliminaries:1. Blood for hb
estimation,haemotocrit estimation, coagulation profile , ABO and rh grouping , urine for detection of protein, 2. ringer solution drip is started
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C. DEFINITIVE TREATMENT : I. Pt in labour :labour accelerated by low
rupture of membranes , oxytocin drips to be started to accelerate labour
II. Pt not in labour: a. preg 37 weeks or more then induction of
labour is done by low ruptue of membranes b.Indication for caesarean section: fetal distress
, amniotomy could not be done or failed, associated complicating factors, confusion in diagnosis
Preg less than37 weeks : bleeding moderate to severe( low rupture of mebrane , oxytocin drip is started), bleeding slight or stopped( put on conservative mx)
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B. MIXED OR CONCEALED TYPE Defentive treatment: i. Blood samples are takenii. To correct hypovolemiaiii. Artificial rupture of membranesiv. Vaginal deliveryv. Caesarean section – indicated in two
extreme cases 1. early – unfavourable cervix, whr speedy delivery is not possible
vi. 2.late – progress of labour delayed in spite of amniotony and oxytocin
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Abruptio Placentae
Resuscitation Revealed Concealed
Pt. in labour Pt. not in labour Delivery
ARM+Oxytocin Delivery ARM+Oxytocin Caesarean Sec.
Vaginal delivery ARM+ Caesarean Vaginal delivery Oxytocin delivery
Vaginal delivery
Oxytocics is continued to improve uterine tone along blood transfusion.
APH
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Difference between placenta praevia & Abruptio placentae:
APH
Points of discussion Placenta praevia Abruptio placentae
Nature of bleeding & character of blood
Painless, causeless and recurrent & bright red.
Painful, continuous and dark coloured
General condition and anemia
Proportionate to visible blood loss.
Out of proportion to the visible blood loss.
Features of pre-eclampsia
Not relevant. Present in 1/3rd of cases.
Height of uterus Proportionate to the gestational age.
Enlarged and disproportionate.
Feel of uterus Soft and relaxed. Tense, tender, rigid.
Malpresentation It is common. Head is high.
Unrelated as head is engaged.
FHS Present. Absent.
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Points of discussion Placenta praevia Abruptio placentae
Placentography (USG)
Placenta in lower segment.
Placenta in upper segment.
Vaginal examination Placenta is felt on the lower segment.
Placenta is not felt in lower segment.
APH
A, Partial abruption with concealed hemorrhage. B, Partial abruption with apparent hemorrhage. C, Complete abruption with apparent hemorrhage.
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Unexplained or indetreminate bleeding
Collective group of entities where a confident diagnosis of placenta praevia or abruptio placenta cannot be made , nor is there any local lesions to account for the cause of bleeding
Marginal sinus haemorrahgeCircumvallate placenta or excessive show
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An extra placental cause of APH is suspected when placental praevia and abruptio placentae are excluded from history, clinical examination and USG.
A gentle speculum examination of the cervix and vagina helps to settle the diagnosis of local causes of bleeding in such cases. Benign conditions like cervical ectropion, cervical polyp are not treated during the pregnancy. A cervical polyp can however be removed, if recurrent bleeding persists.
APH
EXTRA PLACENTAL BLEEDING
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Broadly divided into LOCAL CAUSES OF BLEEDING
And OTHER CAUSES LOCAL CAUSES – includes vulvar vein
varicosities, cervical erosions, cervical polyps , cervical carcinomas , cervical lesions
OTHER CAUSES – Execess show, coagulopathies, uterine ruptures
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A. Local causes Vulvar vein varicosities Condition of
varicose vein occuring in vulva during pregnancy
Cervical erosions- raw looking granular appearance of cervix, occurs when the inner linning of the cervical cannal comes out onto the part whr cervix can be visualised
Cervical cancers- cancers arising from the cervix , also cause vaginal bleeding
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Cervicitis : Inflammtion of the cervix , caused due to infection of the endo cervix
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B. OTHER CAUSES 1. clotting problems : DIC OR disseminated
intravascular coagulation Is pathological form of clotting factors that
consumes large amount of clotting factors that is diffuse causing widepread external bleeding , internal bleeding or both
Is a over activation of clotting cascade and fibrinolytic sytem , resulting in depletion of plaletes and clotting factors
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Management : correcting the underlying cause and replacement of essential factors and fluid volume
2. CORD INSERTIONS AND PLACENTAL VARIATION:
Velamentous insertion of cord :traction on the cord may tear , one or more of fetal vessels, as a result fetus bleed to death
Battledore insertion of the cord- increases the risk for fetal haemorrhage
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Thank you