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Obstetric Hemorrhage – A Complete Patient Guide

Overview

Obstetric hemorrhage (also called postpartum hemorrhage, PPH, when it occurs after delivery) is excessive bleeding that originates from the uterus or its supporting structures during pregnancy, labor, or the postpartum period. It is one of the leading causes of maternal morbidity and mortality worldwide.

• Who it affects: All pregnant people are at risk, but the condition is most common in women delivering vaginally or by cesarean section after 20 weeks of gestation.
• Prevalence: In high‑income countries, PPH occurs in about 1–5 % of deliveries; in low‑ and middle‑income countries the rate climbs to 6–10 % and accounts for roughly 25 % of maternal deaths (WHO, 2023).
• Timing: Hemorrhage can be classified as:
  • Primary (early) PPH: within 24 hours of birth.
  • Secondary (late) PPH: from 24 hours to 12 weeks postpartum.

Symptoms

Bleeding can be hidden (internal) or visible. Recognizing the full spectrum of signs helps you act quickly.

• Vaginal bleeding: Soaking pads in less than 15 minutes, a gush of bright red blood, or continuous bleeding that doesn’t lessen.
• Clots: Passage of large clots (larger than a golf ball) suggests significant blood loss.
• Uterine tone: A soft, “boggy” uterus that does not contract after delivery.
• Abdominal pain or pressure: Especially if the uterus is over‑distended.
• Dizziness, faintness, or syncope: Due to reduced blood volume.
• Rapid heartbeat (tachycardia) & low blood pressure (hypotension): Objective vital‑sign changes.
• Pale, cool skin or clammy hands: Signs of shock.
• Decreased urine output: Less than 30 mL/hour may indicate renal hypoperfusion.
• Feeling of heaviness or fullness in the pelvis: May hint at retained placenta or uterine atony.
• Fever: When infection accompanies hemorrhage (e.g., septic abortion).

Causes and Risk Factors

Obstetric hemorrhage is usually multifactorial. The most common etiologies are remembered by the “4 Ts”: Tone, Tissue, Trauma, and Thrombin.

1. Tone (Uterine Atony)

• Failure of the uterus to contract effectively after delivery.
• Most frequent cause – accounts for 70–80 % of primary PPH.

2. Tissue (Retained Placenta or Products of Conception)

• Placenta that does not separate completely.
• Placental fragments left in the uterine cavity.

3. Trauma

• Genital tract lacerations, cervical tears, vaginal or perineal episiotomy cuts.
• Uterine rupture, especially in labor after prior cesarean.
• Instrumental delivery (forceps, vacuum) injuries.

4. Thrombin (Coagulopathy)

• Pre‑existing clotting disorders (e.g., hemophilia, von Willebrand disease).
• DIC (disseminated intravascular coagulation) triggered by severe placenta previa, abruptio placentae, or severe infection.
• Medication‑induced platelet dysfunction (e.g., aspirin, heparin).

Risk Factors

• Multiparity (having had several prior births).
• Prolonged labor or “failsafe” induction.
• Overdistended uterus (multiple gestation, polyhydramnios, large fetal size).
• Previous PPH or uterine surgery (cesarean, myomectomy).
• Placenta previa, placental abruption, or accreta spectrum.
• Use of uterotonics before delivery (e.g., oxytocin infusion for labor induction).
• Maternal anemia, obesity, or chronic hypertension.
• Coagulopathies, liver disease, or anticoagulant therapy.

Diagnosis

Prompt diagnosis hinges on clinical assessment paired with targeted investigations.

Clinical Assessment

• Estimate blood loss: visual estimation is unreliable; quantitative methods (e.g., weighing soaked pads) are preferred.
• Examine uterine tone, position, and fundal height.
• Inspect for lacerations, hematomas, or retained tissue.
• Monitor vitals every 5–15 minutes in the first hour postpartum.

Laboratory Tests

Test	Purpose
Complete Blood Count (CBC)	Assess hemoglobin/hematocrit drop, platelet count.
Coagulation profile (PT/INR, aPTT)	Detect coagulopathy or DIC.
Fibrinogen level	Low fibrinogen (<200 mg/dL) predicts severe hemorrhage.
Blood type & cross‑match	Prepare for possible transfusion.
Serum electrolytes & renal function	Monitor end‑organ perfusion.

Imaging (when needed)

• Transabdominal or transvaginal ultrasound: Detect retained placental tissue, uterine rupture, or vascular abnormalities.
• CT angiography or MRI: Reserved for massive, uncontrolled hemorrhage to locate arterial bleeds.

Treatment Options

Treatment follows a stepwise algorithm: stabilize the patient, identify the cause, and control bleeding.

1. Immediate Stabilization

• Call for obstetric emergency response team.
• Place the patient supine with left uterine displacement to relieve aortocaval compression.
• Administer high‑flow oxygen.
• Establish large‑bore IV access (two 16‑gauge lines) and begin rapid crystalloid infusion (e.g., lactated Ringer’s).
• Activate massive‑transfusion protocol if >1500 mL blood loss is anticipated.

2. Pharmacologic Uterotonics (first‑line for uterine atony)

Medication	Typical Dose	Key Points
Oxytocin	10 IU IV/IM bolus, then 10 IU in 1 L saline infusion	First‑line, inexpensive, minimal side effects.
Methylergonovine	0.2 mg IM/IV (repeat q2‑4 h, max 1 mg)	Contraindicated in hypertension.
Carboprost tromethamine (Hemabate)	250 µg IM every 15–90 min (max 2 mg)	Avoid in asthma.
Misoprostol	800–1000 µg PR or sublingual	Useful where refrigeration is limited.

3. Mechanical and Surgical Interventions

• Uterine massage: Manual fundal compression stimulates myometrial contraction.
• Uterine balloon tamponade: Bakri or Foley catheter inflated with saline (up to 500 mL) to apply direct pressure.
• Compression sutures: B‑Lynch or Hayman sutures to mechanically compress the uterus.
• Uterine artery embolization (UAE): Interventional radiology plugs bleeding vessels—preserves fertility.
• Hysterectomy: Last‑resort definitive surgery (total or subtotal) when bleeding cannot be controlled.
• Repair of lacerations: Prompt suturing of genital tract injuries.
• Removal of retained placenta: Manual or gentle forceps extraction under anesthesia.

4. Blood Product Support

• Packed red blood cells (PRBC) to restore oxygen‑carrying capacity.
• Fresh frozen plasma (FFP) and platelets for coagulopathy.
• Tranexamic acid (TXA): 1 g IV over 10 min, followed by 1 g over 8 h (effective if given within 3 h of bleeding onset – WHO, 2022).
• Fibrinogen concentrate or cryoprecipitate if fibrinogen <200 mg/dL.

5. Post‑hemorrhage Care

• Continue uterotonics for 24 h to maintain tone.
• Monitor CBC, coagulation labs every 6‑12 h until stable.
• Assess for anemia and arrange iron supplementation or erythropoietin if needed.
• Psychological support – postpartum hemorrhage can be traumatic.

Living with Obstetric Hemorrhage

Even after successful treatment, many patients have lingering concerns.

• Follow‑up appointments: Typically 1–2 weeks postpartum, then at 6 weeks to review labs and healing.
• Iron‑rich diet: Lean red meat, legumes, fortified cereals, and leafy greens plus vitamin C for absorption.
• Medication adherence: Finish any prescribed uterotonics, iron supplements, or anticoagulation adjustments.
• Activity level: Light activity is safe after 24 h if bleeding has stopped; avoid heavy lifting (>10 lb) for 2 weeks unless cleared.
• Breastfeeding: Generally encouraged; oxytocin released during nursing helps maintain uterine contraction.
• Emotional health: Screen for postpartum depression or anxiety; consider counseling or support groups.
• Future pregnancies: Discuss with your obstetrician. Most women can have a safe subsequent pregnancy, but a detailed plan (early prenatal visits, possible prophylactic uterotonics) is advisable.

Prevention

Many hemorrhages can be averted with proactive care.

• Ante‑partum risk assessment: Review history of PPH, anemia, clotting disorders, and placenta location via ultrasound.
• Optimized hemoglobin: Treat iron‑deficiency anemia before delivery (target Hb ≥ 11 g/dL).
• Active management of the third stage of labor (AMTSL): Administer oxytocin within 1 minute of birth, controlled cord traction, and uterine massage.
• Use of prophylactic uterotonics: Especially for high‑risk women (e.g., multiple gestation).
• Delivery planning: Elective cesarean or induction may be scheduled when placenta previa or accreta is known, with a prepared surgical team.
• Blood product readiness: Hospitals serving high‑risk populations maintain a rapid‑access blood bank and massive‑transfusion protocols.
• Education: Teach pregnant people to recognize early signs of excessive bleeding and when to call their provider.

Complications

If hemorrhage is not promptly managed, serious sequelae can occur.

• Hypovolemic shock: Leads to organ hypoperfusion, renal failure, and cardiac arrest.
• DIC (Disseminated Intravascular Coagulation): Consumes clotting factors, causing diffuse bleeding.
• Acute kidney injury: From prolonged hypotension.
• Infection (endometritis): Retained tissue or surgical interventions increase risk.
• Long‑term anemia: Fatigue, decreased exercise tolerance, and impaired lactation.
• Fertility impact: Hysterectomy eliminates future pregnancies; even uterine‑sparing procedures can cause scarring or synechiae.
• Psychological sequelae: Post‑traumatic stress disorder (PTSD), depression, or anxiety about future births.

When to Seek Emergency Care

References

• World Health Organization. “WHO recommendations for prevention and treatment of postpartum hemorrhage.” 2023.
• Mayo Clinic. “Postpartum hemorrhage.” Updated 2024.
• American College of Obstetricians and Gynecologists (ACOG). “Practice Bulletin No. 183: Postpartum Hemorrhage.” 2023.
• Cleveland Clinic. “Postpartum Hemorrhage – Symptoms, Causes, and Treatment.” Accessed April 2026.
• National Institutes of Health (NIH). “Tranexamic Acid in Postpartum Hemorrhage: WHO Rapid Recommendations.” 2022.

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