Bakri Balloon Tamponade for Postpartum Hemorrhage

The Bakri balloon is a silicone device designed to stop severe bleeding after childbirth by inflating inside the uterus and applying direct pressure to the area where the placenta was attached. Introduced in 1999, it was the first balloon built specifically for postpartum hemorrhage, and it remains one of the most widely used tools when medications alone fail to control bleeding. Across multiple studies, the device controls hemorrhage in roughly 86 to 92 percent of cases, though that number shifts dramatically depending on why the bleeding started in the first place.

How It Stops the Bleeding

Postpartum hemorrhage happens when the uterus does not contract tightly enough after the placenta separates, leaving open blood vessels at the placental site. The Bakri balloon works by filling that uterine cavity with a fluid-filled silicone sac that pushes against these vessels mechanically. Research measuring the pressures involved found that the balloon likely controls bleeding through local compression of the blood vessels in the placental bed, rather than by generating enough internal pressure to exceed systemic blood pressure or by cutting off flow through the uterine arteries entirely.¹ In practical terms, think of it as a firm, even pressure applied right where the bleeding is happening, giving the uterus time to firm up on its own.

The balloon itself has a few features that set it apart from improvised alternatives. It is shaped to conform to the uterine cavity, and it has a dedicated drainage port at the tip. That port connects to a collection bag, allowing clinicians to monitor how much blood is still coming out even while the balloon is in place. If bleeding slows to a trickle through the drainage channel, it signals that the tamponade is working, a check known informally as a positive “tamponade test.”

Placement and How Long It Stays In

After a vaginal delivery, the balloon is inserted through the cervix and into the uterine cavity. It is then filled with sterile saline, typically around 300 to 400 mL, until it fits snugly. A piece of gauze is usually packed into the vagina afterward to keep the balloon from sliding out.² The drainage port is connected to a bag so the care team can watch for ongoing blood loss in real time.

During a cesarean delivery, the balloon can be placed from above, through the uterine incision, before the abdomen is closed. In these cases the volume of saline used tends to be somewhat less than with vaginal placement.³ Regardless of how it goes in, the balloon is generally left in place for about 12 hours before it is deflated and removed.⁴

Some teams insert the balloon under ultrasound guidance to confirm correct positioning while placing it, while others place it by feel and then check with ultrasound afterward. A retrospective study comparing the two approaches found that using real-time ultrasound during insertion helped operators confirm placement more smoothly, though both approaches are practiced and neither is considered mandatory by current guidelines.⁵

How Effective It Is, and When

The headline success rate for Bakri balloon tamponade across studies generally falls in the high 80s to low 90s, but that number hides wide variation depending on the cause of the hemorrhage. A large study of 487 patients found an overall success rate of about 92 percent. When the bleeding was caused by uterine atony, the most common reason, the success rate climbed to nearly 96 percent. For placenta previa, it was around 91 percent. But for placenta accreta spectrum disorders, where the placenta grows abnormally deep into the uterine wall, success dropped to 50 percent. And for bleeding driven by coagulopathy, only about 25 percent of cases were controlled by the balloon alone.⁶

Other series report broadly compatible numbers. A 47-patient study found the balloon successfully managed hemorrhage in 43 of those patients, an overall success rate of about 91 percent, with the four failures ultimately requiring hysterectomy.⁷ Another 50-patient series reported an 86 percent success rate, with the seven failures needing either hysterectomy or uterine artery embolization. A separate analysis of perinatal outcomes reported a hemostasis success rate of about 89 percent.⁸

The takeaway is that the balloon is highly reliable when the problem is a floppy, poorly contracting uterus, which is the scenario it was specifically designed for. Its performance drops as the underlying cause becomes more structurally complex or systemic.

What Predicts Failure

Knowing when the balloon is less likely to work is just as important as knowing its headline success rate, because clinicians need to decide quickly whether to try it or move to more invasive procedures. Several studies have identified overlapping sets of risk factors for failure.

A systematic review combined data from multiple centers and found that the following factors were independently associated with balloon failure: a history of cesarean section, pre-pregnancy obesity, anteriorly placed placenta, placenta accreta, cesarean delivery in the current pregnancy, high estimated blood loss before the balloon was inserted, long operative duration, and coagulopathy.⁹ In a separate analysis from the same systematic review, maternal age, cesarean delivery, having already received seven or more units of red blood cells, and uterine curettage performed before balloon insertion were also independently linked to failure.¹⁰

Another study quantified the risk more granularly. Twin pregnancies carried an odds ratio near 10 for failure, meaning the balloon was about ten times more likely to fail in twin births. Placenta accreta spectrum with or without previa roughly quadrupled the odds of failure. Blood loss of at least about 1,100 mL before balloon insertion tripled the odds, and multiparity and IVF conception both raised the risk as well.¹¹

A recurring theme across these findings is timing: the more blood a patient has already lost before the balloon goes in, the worse it performs. This argues for using it earlier rather than later when medications are not getting the bleeding under control.

Use in Placenta Previa

Placenta previa, where the placenta covers or sits near the cervical opening, creates a bleeding risk during and after cesarean delivery because the lower uterine segment does not contract as forcefully as the upper portion. The Bakri balloon has been studied specifically for this scenario, both as a treatment when bleeding starts and as a preventive measure placed at the time of surgery before bleeding becomes severe.

In a study comparing prophylactic balloon placement to traditional uterine gauze packing during cesarean sections for placenta previa, the balloon group had significantly less intraoperative blood loss, fewer transfusions, shorter surgical time, and shorter hospital stays.¹² A separate study found that routine rapid insertion of the balloon during cesarean delivery for previa significantly reduced both intraoperative and postoperative bleeding and cut the average surgical time from about 50 minutes to 30 minutes. A handful of patients in that series did have the balloon prolapse out of the uterus after surgery, but reinserting it controlled the bleeding without further procedures.¹³

When the balloon is used to treat rather than prevent bleeding from previa, success rates are somewhat lower than for uterine atony. One series reported a 75 percent success rate for placenta previa patients specifically.¹⁴ The difference likely reflects the fact that bleeding from the lower uterine segment responds less completely to compression than bleeding from the upper fundus, where the uterine muscle is thicker.

The Uterine Sandwich and Other Combination Approaches

When the balloon alone is not enough, clinicians sometimes combine it with compression sutures, a technique nicknamed the “uterine sandwich.” This involves stitching the uterine walls together with a suture pattern (such as the B-Lynch suture) while the inflated balloon inside holds the walls compressed from within. The sutures press from outside, the balloon presses from inside, and the two work together.

An early series of five patients treated with this combined technique found it successful in all cases, with the balloon left in place for a median of about 11 hours and no complications observed. The balloon volumes used were much smaller in this context, a median of 100 mL rather than 300 to 400, because the sutures were already providing external compression.¹⁵ A subsequent prospective study confirmed that the uterine sandwich successfully avoided hysterectomy in all treated cases and found no documented postpartum complications, noting the technique was particularly useful when atonic hemorrhage occurred alongside placenta previa.¹⁶

What Happens When the Balloon Fails

Failure means ongoing significant bleeding despite the balloon being in place. The next steps typically include uterine artery embolization, surgical compression sutures if not already attempted, or, when all else fails, hysterectomy. In one institutional review of 43 Bakri balloon placements, only one required hysterectomy and eight underwent uterine artery embolization.¹⁷ In a smaller tertiary-center series with nine failures out of 50 placements, five of the nine failures required subtotal hysterectomy and four required total hysterectomy.¹⁸ The proportion of failures that end in hysterectomy varies by center and likely reflects differences in case complexity and the availability of interventional radiology for embolization.

Safety and Rare Complications

Serious complications from the Bakri balloon are uncommon. One concern that comes up frequently is infection, since a foreign body sitting inside the uterus for hours could theoretically raise the risk of endometritis. A retrospective analysis comparing women who received the Bakri balloon with those who did not found no significant difference in endometritis rates between the two groups.¹⁹

Uterine rupture has been reported, though it is exceedingly rare and typically occurs in the context of other contributing factors. One case report described a young woman who had a preterm delivery, was readmitted weeks later with severe secondary hemorrhage, and underwent curettage followed by Bakri balloon tamponade. She was later found to have uterine rupture requiring hysterectomy. The authors noted that the sequential use of curettage and balloon tamponade likely both contributed.²⁰ Case reports like this serve as reminders rather than evidence of a frequent risk: the vast majority of balloon placements are uneventful.

Alternatives and How They Compare

The Bakri balloon is not the only option for uterine tamponade. In resource-limited settings, a condom tied to a Foley catheter and filled with saline is a widely used improvisation. A randomized trial comparing the Bakri balloon to a condom-loaded Foley catheter for atonic postpartum hemorrhage after vaginal delivery found no significant difference in success rates: about 91 percent for the Bakri versus about 85 percent for the condom catheter. The Bakri balloon did stop bleeding slightly faster, averaging about 9 minutes versus nearly 12 minutes for the condom device, and there were no differences in complications.²¹

Newer vacuum-induced hemorrhage devices take a different approach, applying suction to the uterine cavity instead of outward pressure. A retrospective comparison found that these vacuum devices had substantially shorter indwelling times: around 4 hours after vaginal delivery and 3 hours after cesarean, compared with nearly 14 hours for the balloon in both routes.²² Shorter device time is appealing for patient comfort and potentially for earlier mobilization, though these newer devices are still accumulating long-term evidence.

Fertility and Menstruation After Balloon Tamponade

A major selling point of the Bakri balloon is that it can spare the uterus when the alternative might be hysterectomy. But does it leave the uterus in good enough shape for future pregnancies? The evidence is reassuring. A study comparing women who had balloon tamponade for severe postpartum hemorrhage with a control group found subsequent pregnancy rates of about 43 percent and 46 percent respectively, with no significant difference. Among the pregnancies after balloon use, most progressed normally to full-term delivery.²³

A longer-term observational study found that about 89 to 95 percent of women who had undergone balloon tamponade reported regular menstrual cycles in the 12 months before follow-up. Among those who were trying to conceive again, all succeeded.²⁴ Case reports of healthy subsequent pregnancies after Bakri balloon use further support the idea that the device does not damage the uterine lining or muscle in a way that impairs future reproduction.²⁵

Cost and Access in Lower-Resource Settings

The Bakri balloon is a commercially manufactured, single-use medical device, and it costs considerably more than improvised alternatives. A health-economic study in public hospitals in Maharashtra, India, estimated the per-case cost of managing atonic postpartum hemorrhage with the Bakri balloon at about 59 US dollars, compared with lower costs for condom-based or other low-cost tamponade devices.²⁶ That difference might sound small, but in public health systems with constrained budgets, it scales significantly. A cost-effectiveness analysis found that the Bakri balloon was not cost-effective compared to condom-based tamponade in that setting, incurring higher costs without demonstrating better outcomes.²⁷

This finding does not mean the Bakri balloon is a bad product. It means that in settings where a condom catheter achieves comparable clinical results, paying several times more for a proprietary device is hard to justify with limited resources. The World Health Organization has endorsed uterine balloon tamponade as a technique for postpartum hemorrhage without specifying which device must be used, leaving the choice to local resources and clinical judgment. In well-resourced hospitals, the Bakri’s purpose-built design, integrated drainage channel, and consistent manufacturing quality remain advantages over improvised devices.

Training and Simulation

Successful Bakri balloon placement depends on operator familiarity, and the device is not something most clinicians use every day. Emergency situations are poor learning environments. Simulation-based training programs have shown measurable benefits: one study found that all 25 participants in a simulation exercise showed significant improvement in self-assessed competency for balloon placement.²⁸ Hands-on practice with mannequin models allows providers to rehearse the manual steps, understand how much saline to instill, and practice connecting the drainage system before they face a real hemorrhage at two in the morning. Many obstetric units now include balloon tamponade in their regular hemorrhage drills alongside medication protocols and surgical techniques.

Part of the training challenge is that postpartum hemorrhage management is a stepwise process: medications first, tamponade second, surgical interventions third. Knowing when to move from one step to the next, rather than persisting too long with a failing approach, is arguably as important as technical skill with any individual device. The evidence on failure predictors described earlier gives clinical teams a framework: if a patient has several risk factors for balloon failure, it may be wiser to prepare for surgical backup from the start rather than counting on the balloon alone.