Postpartum haemorrhage: tranexamic acid and balloon tamponade

Postpartum haemorrhage (PPH) remains an obstetric emergency in which minutes matter. The immediate priorities are recognition, calling for assistance, uterine assessment, source control, intravenous access, blood loss measurement and coordinated resuscitation. Tranexamic acid (TXA) and uterine balloon tamponade (UBT) address different parts of the problem: TXA supports clot stability, while a balloon applies pressure inside the uterus when atony is driving continued bleeding.

For Australian maternity teams, these interventions work best within a written haemorrhage pathway rather than as isolated procedures. The pathway should cover vaginal and caesarean birth, public and private hospitals, access to blood components, retrieval from rural sites and transfer to a tertiary centre. The exact response must follow local policy, senior obstetric advice and current guidance from Australian professional bodies.

Recognising the haemorrhage early

Visual estimates frequently understate blood loss, particularly when it is mixed with amniotic fluid or collected beneath a patient. Quantitative measurement using calibrated drapes, weighing swabs and recording suction volumes gives the team a more reliable trajectory. A falling blood pressure is a late sign, so rising heart rate, pallor, altered behaviour, reduced urine output and ongoing brisk loss should prompt action before profound shock develops.

The common causes are often remembered as the four Ts: tone, tissue, trauma and thrombin. Uterine atony is frequent, but a firm uterus with continued bleeding should redirect attention to genital tract laceration, uterine rupture, retained placenta or abnormal placentation. Check the placenta, inspect the birth canal when appropriate, assess uterine tone and involve an experienced obstetrician early.

A clear emergency call should identify the estimated blood loss, birth route, suspected cause, vital signs and required help. In a large Sydney or Melbourne maternity service, this may activate a haemorrhage team, blood bank and operating theatre simultaneously. In a smaller regional unit, the same call should include retrieval coordination and early discussion with the receiving tertiary hospital.

How tranexamic acid fits treatment

TXA inhibits the breakdown of fibrin and is most effective when administered promptly. Evidence from the WOMAN trial supports giving intravenous TXA as soon as possible after PPH is diagnosed, with greatest benefit when treatment occurs within three hours of birth. A commonly used regimen is 1 g intravenously over about 10 minutes, followed by a further 1 g if bleeding continues after 30 minutes or restarts within 24 hours, subject to local protocol.

TXA should be given alongside uterotonics, uterine massage, fluid and blood resuscitation, and treatment of the underlying cause. It is not a substitute for repairing a tear or removing retained placental tissue. Avoid rapid intravenous administration, which can cause hypotension, and check for relevant contraindications, renal impairment and a history of thromboembolic disease according to the hospital guideline.

The maternity record should capture the time of birth, time of diagnosis, TXA dose, infusion time, response and any second dose. This is particularly valuable when care crosses departments or when a patient is transferred from a regional hospital to a metropolitan centre. A standardised medication chart or electronic order set can reduce omissions during a high-pressure event.

When balloon tamponade is appropriate

UBT is primarily a treatment for uterine atony when massage, uterotonics and initial resuscitation have not controlled bleeding. Before insertion, clinicians should consider trauma, retained tissue and uterine rupture. A balloon should never create false reassurance when the bleeding source has not been assessed. Ongoing haemorrhage after placement requires immediate reassessment rather than simply adding more volume.

Commercial systems such as Bakri-style balloons and other approved devices may be available through Australian hospital procurement, although brands, stock levels and training differ between states and facilities. A locally approved condom-catheter technique may exist in some settings, but it should be used only under a validated protocol with appropriate governance, equipment and staff competency.

Insertion requires aseptic technique, correct positioning and inflation with the volume specified by the device instructions or local policy. Some systems include a drainage channel, allowing the team to observe continuing blood loss. Ultrasound can help confirm position when anatomy is uncertain. Document the device, insertion time, balloon volume, drainage, uterotonics and the planned review or removal time.

Combining medical and mechanical control

TXA and UBT are complementary. TXA supports haemostasis throughout the circulation, while the balloon targets the uterine cavity directly. Neither should delay definitive management when there is suspected rupture, major genital tract trauma, placenta accreta spectrum or rapidly worsening maternal physiology.

A practical sequence is to activate the haemorrhage response, obtain large-bore intravenous access, send blood samples, start uterotonics and TXA, assess the four Ts, and prepare blood components. If atony continues after initial measures, insert UBT while senior clinicians determine whether theatre, uterine artery embolisation or hysterectomy is required. The threshold for escalation should be based on the rate of bleeding and clinical condition, not a single number.

Massive transfusion protocols vary, but they commonly include early access to red cells, plasma, platelets and fibrinogen replacement guided by laboratory or point-of-care testing. Hypothermia, acidosis, hypocalcaemia and dilutional coagulopathy can intensify bleeding. Warming the patient and fluids, monitoring ionised calcium and repeating coagulation studies are practical parts of haemorrhage care.

Australian pathways and local access

Australia’s geography affects PPH planning. A tertiary service in Brisbane, Perth, Adelaide, Sydney or Melbourne may have 24-hour obstetric theatre, anaesthesia, pathology and interventional radiology. A rural or remote maternity service may need to stabilise the patient with TXA, uterotonics and balloon tamponade while arranging aeromedical retrieval, often with the Royal Flying Doctor Service or a state retrieval network.

Public hospitals generally work within state or territory protocols, while private hospitals may have different escalation arrangements and blood bank access. Every facility should know how quickly emergency O-negative or group-specific red cells can arrive, who authorises blood release, and which clinicians can insert and monitor a balloon. National Blood Authority patient blood management principles can support local policy, but bedside decisions remain governed by the clinical situation.

Equipment should be checked in the same way as other emergency stock. Confirm that the selected balloon is approved for the facility, that insertion kits and drainage components are present, and that staff have practised the procedure. Simulation should include communication with the blood bank, theatre, neonatal team and retrieval service, rather than focusing only on the insertion itself.

Research and education remain central to improving perinatal outcomes. The FAOPS congress resource reflects the region’s focus on perinatal and neonatal medicine, even though the planned Tokyo meeting was cancelled during the COVID-19 pandemic. Its wider context is a reminder that local protocols benefit from international evidence while still needing adaptation to Australian geography and health-system realities.

Monitoring after balloon insertion

A balloon is an active treatment, not a definitive endpoint. Continue frequent observations of pulse, blood pressure, respiratory status, temperature, mental state, urine output and cumulative blood loss. Record drainage at regular intervals and watch for renewed bleeding around the device, abdominal distension or deteriorating perfusion. A stable-looking patient can worsen if bleeding is concealed or a clotting problem progresses.

The care team should agree on explicit review points. These may include reassessment after insertion, repeat blood tests, ongoing uterotonic therapy, antibiotic policy and a time window for deflation and removal. Device-specific instructions matter because maximum inflation volumes and recommended dwell times vary. Removal should occur where rapid intervention, blood products and senior support remain available.

Potential complications include malposition, expulsion, cervical or vaginal trauma, infection and delayed recognition of a surgical cause. If blood loss remains heavy, the balloon is expelled, or physiology does not improve, escalate immediately to theatre or another definitive intervention. Do not repeatedly inflate a device beyond its approved limits.

Recovery, review and future prevention

A major haemorrhage can affect physical recovery, breastfeeding, sleep, mood and confidence after discharge. Anaemia should be assessed and treated, and follow-up should address fatigue, dizziness, wound recovery and emotional distress. Information should explain what happened in plain language, including the likely cause, treatments received and warning signs that require urgent medical review.

Sleep and mental health deserve attention during the postnatal period. Evidence on sleep and pregnancy outcomes is relevant to broader perinatal care, although postpartum sleep disruption after a haemorrhage also reflects blood loss, hospitalisation, pain and newborn feeding demands. Referral to a GP, midwife, maternal child health nurse or perinatal mental health service should be available when recovery is difficult.

A structured debrief should involve the patient and clinical team. Review the timeline, communication, blood loss estimates, medication administration, balloon use, transfer decisions and any delays. Future pregnancy planning may require discussion of anaemia prevention, placenta location, previous uterine surgery, recurrence risk and the birth setting. Documentation should be accessible to the woman and her future maternity providers.

Practical bedside priorities

Use the following principles to make care more consistent across Australian maternity settings:

• Measure cumulative blood loss and reassess the patient’s physiology repeatedly.
• Give TXA early when clinically significant PPH is diagnosed, following the approved local dose and contraindication guidance.
• Search actively for tone, tissue, trauma and thrombin rather than assuming every haemorrhage is atony.
• Insert UBT only after considering laceration, retained tissue and rupture, and monitor drainage closely.
• Activate blood, anaesthetic, theatre, neonatal and retrieval support before deterioration becomes severe.
• Record times, doses, balloon volume, blood products, observations and escalation decisions.
• Offer anaemia treatment, emotional support, debriefing and a clear plan for future pregnancies.

Every maternity unit should now compare its PPH policy with current evidence, check TXA and balloon availability, and run a multidisciplinary simulation involving clinicians, midwives, pathology, blood bank and retrieval teams. Prompt, rehearsed action can turn two useful interventions into a coordinated haemorrhage pathway that protects mothers in metropolitan, regional and remote Australia.