Management of HELLP Syndrome
The definitive treatment for HELLP syndrome is prompt delivery after initial stabilization, with immediate delivery indicated for worsening pre-eclampsia, severe thrombocytopenia, gestational age ≥32-34 weeks, or evidence of fetal distress. 1
Initial Stabilization and Diagnosis
HELLP syndrome represents the severe end of the pre-eclampsia spectrum and carries a maternal mortality of 3.4%, requiring aggressive early management. 2
Diagnostic Criteria
- Hemolysis: Presence of schistocytes on peripheral smear, total bilirubin >12 mg/L, or LDH >600 IU/L 3
- Elevated liver enzymes: Increased transaminases correlating with degree of thrombocytopenia 2, 1
- Low platelets: Platelet count <100,000/mm³ 3
- Severe pre-eclampsia markers: Blood pressure >160/90 mmHg, proteinuria >5g/24h, oliguria <400ml/24h, cerebral signs, or pulmonary edema 2, 1
Critical Initial Actions
- Blood pressure control: Initiate IV magnesium sulfate for seizure prophylaxis and neuroprotection 4
- Antihypertensive therapy: Use IV hydralazine or labetalol for severe hypertension (>160/110 mmHg) 4
- Comprehensive laboratory workup: Platelet count, white blood cell count, PCV, partial thromboplastin time, fibrinogen, fibrin degradation products, peripheral blood smear, liver function tests, creatinine, urea, and uric acid 2, 1
- Imaging: Chest X-ray to exclude pulmonary edema and ECG 2, 1
- Monitoring setup: Insert urinary catheter for hourly output monitoring; consider central venous catheter in critically ill patients 1, 4
Blood Product Management
Transfuse platelets if count is <50,000/mm³, particularly before cesarean section. 2, 1, 4
- Whole blood transfusion: Administer if hemoglobin <10 g/dL 2, 4
- Severe thrombocytopenia (<20×10⁹/L): Correlates with higher risk of hepatic hemorrhage and requires aggressive platelet support 4
Indications for Immediate Delivery
Delivery should proceed immediately when any of the following are present:
- Worsening pre-eclampsia (increasing blood pressure, cerebral symptoms, deteriorating hepatic or renal function) 2, 1
- Severe thrombocytopenia 2, 1
- Gestational age ≥32-34 weeks 2, 1
- Evidence of fetal distress 2, 1
- Evidence of fetal maturity 2, 1
Mode of Delivery
- Cesarean section rates are 61.5-76% due to obstetric indications, though vaginal delivery is acceptable if cervical conditions are optimal without maternal or fetal complications 2, 1, 3
Conservative Management Before 32 Weeks
- Expectant management may be considered before 32 weeks with intensive monitoring to allow corticosteroid administration for fetal lung maturity 5, 6, 3
- The Mississippi protocol includes IV dexamethasone, magnesium sulfate, antihypertensives, and intensive monitoring with arterial line 5
- Important caveat: The American College of Obstetricians and Gynecologists advises against corticosteroids to improve maternal outcomes in HELLP syndrome 4
Anesthetic Considerations
For general anesthesia, use drugs with minimal hepatic or renal metabolism.
- Induction: Propofol is recommended over thiopentone 1
- Rapid sequence intubation: Suxamethonium for airway management 2, 1
- Cardiovascular stability: Remifentanil provides excellent cardiovascular stability in high-risk patients 7
- Fentanyl: 5 µg/kg IV to attenuate hypertensive response to intubation 2
- Maintenance: 50% nitrous oxide with 0.5% isoflurane in oxygen 2
Post-Delivery Management
Transfer to high-dependency unit or ICU for 24 hours minimum with intensive monitoring. 2, 4
Monitoring Parameters
- Continuous blood pressure, oxygen saturation, ECG, and central venous pressure 2, 4
- Hourly urinary output to assess renal function 2, 4
- Serial complete blood counts to monitor platelets and hemoglobin 4
- Liver function tests to track enzyme levels 4
- Coagulation profile including fibrinogen and fibrin degradation products 4
Continued Medical Management
- Magnesium sulfate: Continue for 24 hours postpartum for seizure prophylaxis 4
- Blood pressure control: Oral labetalol, nifedipine, or methyldopa for non-severe hypertension; IV labetalol/hydralazine for severe hypertension 4
- Strict fluid balance: Avoid aggressive fluid resuscitation to prevent pulmonary edema 4
Monitoring for Complications
- Hepatic hemorrhage or hematoma: Watch for abdominal pain, epigastric pain, or right shoulder pain; perform abdominal ultrasound if suspected 4
- Hepatic failure: Early referral to transplant center if signs develop 4
- Hypoglycemia: Monitor glucose levels during management 1, 4
- Renal failure: If oliguria develops, measure urine sodium and osmolality to confirm diagnosis 2
Common Pitfalls
- Delayed diagnosis: Symptoms mimic acute cholecystitis, drug reactions, or idiopathic thrombocytopenia 2, 1, 4
- Fluid overload: Aggressive fluid resuscitation significantly increases pulmonary edema risk 4
- Inappropriate corticosteroid use: Do not give corticosteroids to improve maternal outcomes 4
Long-Term Counseling
- Recurrence risk: Counsel regarding increased risk in future pregnancies 4
- Aspirin prophylaxis: Consider for future pregnancies starting before 16 weeks' gestation 4
The condition typically resolves within days after delivery, with platelet counts normalizing by postpartum day 2 and liver enzymes returning to normal over the following week. 2