Postpartum Hemorrhage: A Simple Guide
What Is It?
Postpartum hemorrhage (PPH) is excessive bleeding after delivery—defined as blood loss ≥500 mL after vaginal birth or ≥1,000 mL after cesarean section, or any bleeding that makes the mother unstable. 1 It's the leading cause of maternal death worldwide, with most deaths occurring in the first 24 hours after birth. 1
Why Does It Happen? (The "Four T's")
The causes can be remembered as the Four T's: 2
Tone (Uterine Atony) - The uterus doesn't contract properly after delivery. This is the most common cause, responsible for over 75% of cases. 3, 4 Think of the uterus as a muscle that needs to squeeze down to stop bleeding from where the placenta was attached.
Trauma - Tears in the vagina, cervix, or uterus; or the uterus turning inside-out (rare). 2
Tissue - Pieces of placenta or membranes left inside the uterus. 2
Thrombin (Clotting Problems) - The blood doesn't clot properly due to underlying conditions or massive blood loss. 2
How to Prevent It
Every woman should receive oxytocin immediately after delivery to prevent PPH. 3, 2 This medication helps the uterus contract and is given as 5-10 units either into a vein (IV) or muscle (IM). 5 This simple step significantly reduces bleeding risk regardless of whether delivery was vaginal or cesarean. 6
Immediate Treatment When PPH Occurs
First Actions (Do These Right Away)
The moment PPH is recognized, give tranexamic acid (TXA) 1 gram IV over 10 minutes within 3 hours of birth, alongside oxytocin 5-10 units, start uterine massage, and begin fluid resuscitation. 3, 1 This is critical because:
- TXA must be given within 3 hours—its effectiveness drops by 10% every 15 minutes you wait, and giving it after 3 hours may actually be harmful. 3, 1
- TXA works by preventing blood clots from breaking down too quickly. 7
- A second 1-gram dose can be given if bleeding continues after 30 minutes or restarts within 24 hours. 3, 1
Physical Maneuvers
- Uterine massage - Firmly massage the uterus through the abdomen to stimulate contractions. 3, 8
- Bimanual compression - One hand inside the vagina pushes up on the uterus while the other hand pushes down from the abdomen. 3
- Manual examination of the uterus - Check inside for retained placental pieces (give antibiotics first). 8
- Inspect for tears - Carefully look at the vagina, cervix, and perineum for lacerations that need repair. 8
Additional Medications (If Bleeding Continues)
If oxytocin alone doesn't work: 8
- Methylergonovine 0.2 mg IM - BUT avoid this if the woman has high blood pressure (can cause dangerous spikes) or asthma (can cause breathing problems). 3, 4
- Prostaglandin F2α - Also avoid in women with asthma due to breathing problems. 3
When Bleeding Doesn't Stop
Balloon Tamponade
If medications fail, place an intrauterine balloon to apply pressure from inside the uterus. 3, 1 This works in 79-90% of cases when properly placed and should be tried before surgery. 1
Blood Transfusion
Start massive transfusion protocol if blood loss exceeds 1,500 mL. 3, 1 This means giving:
- Packed red blood cells, fresh frozen plasma, and platelets in a 1:1:1 ratio. 7
- Don't wait for lab results in severe bleeding—start transfusing immediately. 3, 4, 1
- Target: Keep hemoglobin >8 g/dL and fibrinogen ≥2 g/L during active bleeding. 3, 1
The most important clotting factor to watch is fibrinogen—levels below 2 g/L predict severe hemorrhage. 7, 4
Surgical Options (Last Resort)
If everything else fails: 8
- Arterial embolization - A radiologist blocks the bleeding blood vessels (patient must be stable enough to transfer). 3, 1
- Uterine compression sutures - Special stitches that compress the uterus. 3
- Hysterectomy - Removing the uterus as a life-saving measure. 8
Critical Things to Remember
- Keep the mother warm - Warm all IV fluids and blood products, and use warming blankets. Cold temperatures prevent blood from clotting properly. 3, 1
- Give oxygen in severe PPH. 3, 8
- Monitor closely for 24 hours after delivery, as complications can develop. 3, 1
- Visual estimation of blood loss is notoriously inaccurate—use collection bags and measurement tools when possible. 4, 8
Common Mistakes to Avoid
- Delaying TXA—every 15 minutes counts. 3, 1
- Waiting for lab results before transfusing in severe bleeding. 3, 1
- Giving methylergonovine to women with high blood pressure or asthma. 3, 4
- Underestimating blood loss because it "doesn't look that bad." 4
- Not maintaining body temperature—hypothermia makes bleeding worse. 3, 1