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Monday, 11 October 2010 04:07 |
1. Definition:
PPH is defined as excessive vaginal bleeding (more than 500mls) from the genital tract after the birth of the child.
2. Types:
- Primary (immediate): PPH that occurs within the first 24 hours after delivery.
- Secondary: PPH occurs after the first 24 hours until 6 weeks after delivery.
PPH accounts for the majority of maternal deaths from hemorrhage and in the Sudan there is a lot of effort that need to be done to reduce the maternal deaths from PPH.
3. Predisposing factors:
- Excessive uterine distension (twins, poly hydramnios, large baby).
- Multiparity (the uterine muscles are week and thin).
- Prolonged labour.
- Vaginal delivery.
- Placenta praevia.
- Deep anesthesia.
- Accidental hemorrhage with couvelaire uterus (the uterus will fail to contract).
- DIC usually associated with concealed placental abruption.
4. Causes:
- Uterine atony (the uterus fails to contract, this is the commonest).
- Retained placenta (the placenta fails to separate completely).
- Uterine rupture.
- Cervical tear.
- Vaginal tear.
5. Consequences of PPH:
- Circulatory failure (shock and death).
- Puerperal anemia.
- Maternal morbidity.
- Acute renal failure.
- Pituitary necrosis (Sheehan's syndrome).
6. Clinical picture:
- History.
- Examination:
- If the patient is shocked there are signs of shock.
- Vaginal bleeding.
- The placenta, if retained you find the cord, and the uterus at the umbilicus very soft.
7. Prevention:
- This very important, so during booking of the pregnant woman any risk factor (grand multiparity, twins or history of PPH before) should be underlined and advice given.
- Correction of anemia during pregnancy.
- Prolonged labour must be prevented.
- Correct procedure to deliver the placenta should be used (avoid Crede's method).
- Use of syntocinon or ergometrine for management of third stage.
8. Treatment:
The treatment of primary PPH is based on 2 principles:
- Stop the bleeding.
- Restore the blood volume.
8.1. Treatment if the placenta not delivered:
- By abdominal examination ascertain whether uterus is contracted (firm) or not (soft).
- If the uterus is soft (not contracted) you need to stimulate a contraction by rubbing on the fundus (per abdomen).
- Give I.V syntometrine or I.V syntocinon.
- The placenta may be separated but not delivered. Sign of that when you pull on the cord (Brandt-Andrew's method) the cord will lengthen.
- Examination of the placenta.
- If the there is a missed lobe, the woman should taken to theatre for manual removal under anesthesia (general).
- Bimanual compression.
- I.V. line with I.V. syntocinon or I.M.
- If the placenta has not separated and on V/E there are no signs of separation provided I.V. oxytocin been given, manual removal of the placenta should be done.
- If after manual removal bleeding is still going on, either ligation of internal iliac arteries or hysterectomy may be the resort.
8.2. Treatment if the placenta is delivered:
- Feel the uterus if it is soft stimulate a contraction.
- I.V. syntocinon or ergometrine.
- In case of the uterus being firm (contracted) & bleeding is still there is a possibility of cervical or vaginal laceration or rupture uterus. DIC is a possibility if there is predisposing factor.
- Hysterectomy may be the last resort if the bleeding does not stop with all the measures taken.
9. Post-partum collapse:
- It occurs secondary to post-partum hemorrhage in almost all cases.
- Rarely it can occur due to a medical problem complicating the pregnancy or labour, like cerebral malaria, CVA, diabetic hypoglycemia, etc…
- The clinical picture is very obvious, the patient who delivered just now had a PPH and develop symptoms of collapse.
- History is straight forward.
- Examination: the patient is drowsy or in coma, rapid thready pulse, very low BP, and post-partum bleeding ongoing.
9.1. Treatment:
- I.V. line or venesection.
- I.V. fluids.
- Immediate blood transfusion, or plasma (Rh -ve blood in case of delayed cross- matched).
- The observation of the patient with the foot of bed raised.
- DIC: if bleeding persists in spite of all those measures.
10. Primary post-partum hemorrhage from laceration:
- Vagina.
- Cervical tear.
- Ruptured uterus.
- Diagnosis: when the bleeding continues after the placenta has been delivered and the uterus is firmly retracted.
- EUA and management.
11. Secondary PPH:
Occurs more than 24hrs after delivery-up to 6wks after delivery.
11.1. Causes:
- Usually retention of a piece of placenta.
- Infection.
- Separation of a slough that has formed on a cervical or vaginal tear.
11.2. Diagnosis:
- History.
- Examination.
- USS.
11.3. Treatment:
- EUA and exploration of the uterus with the finger or sponge forceps.
- C/S of cervical swab.
- Antibiotic if there infections.
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Last Updated on Thursday, 19 May 2011 05:26 |