
Obstetric ICU — Care of the Critically Ill Mother
An obstetric high-dependency unit (HDU) and intensive care unit (ICU) care for women with life-threatening complications of pregnancy, childbirth, or the puerperium — "when things go wrong in obstetrics, they go wrong fast"
HDU = step-up and step-down care for single-organ or no-organ support; ICU = multi-organ failure or advanced support (ventilation, inotropes, dialysis), led by an intensivist
The main reasons for admission are haemorrhage, hypertensive disorders (eclampsia, HELLP), sepsis, heart disease, respiratory failure, and acute kidney or liver failure
Pregnancy changes everything: airway, oxygenation, blood pressure targets, drug choice, and the fetus — treat the mother first, because a stable mother is the best treatment for the baby
| Topic | Details (Ministry of Health and Family Welfare) |
|---|---|
| HDU versus ICU | HDU: between the labour ward and the ICU; single-organ or no-organ support; usually not for ventilated or multi-organ failure patients; ICU: multi-organ failure or advanced support, led by an intensivist |
| Number of beds | Up to 250 deliveries a month: 4 beds; 250–500: 8 beds; over 500: increase in proportion; one isolation room (about 150 sq ft) for infectious cases |
| Space and location | About 120–130 sq ft per HDU bed and 130–150 per ICU bed; next to the labour room and theatre, near the ICU, laboratory, radiology, and blood bank; one entry, emergency exits |
| Staff | Nurse-to-patient ratio 1:2 in HDU and 1:1 in ICU; HDU headed by a full-time obstetrician; 8-bed HDU: 4 nurses and 2 emergency obstetric care medical officers per shift; 4-bed ICU: 4 nurses and an intensivist; anaesthetist present 24 hours; on-call physician, paediatrician, surgeon, radiologist |
| Equipment | Bedside monitors (oxygen saturation, blood pressure, ECG, respiration, temperature), infusion and syringe pumps, ultrasound with colour Doppler, cardiotocography, defibrillator and crash cart, transport and non-invasive ventilators, arterial blood gas machine, blood warmer, eclampsia box, Bakri balloon, intubation equipment |
| Per bed | At least 2 oxygen, 1 air, and 2 suction outlets and about 10 power points; backup power, fire safety, biomedical waste management, ambulance with newborn transport support |
| Training | Orientation for nurses and medical officers; 3 months of ICU posting for medical officers; emergency drills every 3 months; emergency trolley checked daily; everyone trained in CPR |
| Level | Typical conditions |
|---|---|
| HDU (MoHFW list) | Severe anaemia, haemorrhage, pre-eclampsia, eclampsia, HELLP syndrome (haemolysis, elevated liver enzymes, low platelets), sepsis, DIC, placental problems; cardiac disease, thyroid disorders, diabetic complications, dengue, malaria, asthma; surgical or trauma cases; or clinical judgement |
| ICU (physiological thresholds) | Very low or very high blood pressure, low Glasgow coma score, abnormal electrolytes or pH, low oxygen despite oxygen therapy, need for ventilation or inotropes, DIC, ARDS, multi-organ failure (use the national tables for exact values) |
| Common triggers (general) | Respiratory rate over 30 or under 10, saturation under 90% on oxygen, systolic pressure under 90, urine under 0.5 mL/kg/hour for 2 hours, lactate over 4, seizures or coma, platelets under 50,000 with bleeding |
| Who decides | Obstetrician with the intensivist or anaesthetist; ICU referral only after ICU admission is assured; a mother's baby moves with her if already delivered |
| System | Advice |
|---|---|
| Airway | Difficult and failed intubation are commoner (oedema, large breasts, obesity); aspiration risk; pre-oxygenate well (desaturates quickly); senior operator, video laryngoscope, smaller tube |
| Breathing | Target saturation of 95% or more and PaO₂ of 70 or more; lung-protective ventilation (6 mL/kg ideal body weight); avoid high PaCO₂ (above about 45–50) because it acidifies the fetus; normal pregnant PaCO₂ is 28–32 (see the ABG sheet) |
| Circulation | Left lateral tilt (about 15°) if over 20 weeks; mean arterial pressure of 65 or more; noradrenaline first for septic shock; restrict fluids in pre-eclampsia (pulmonary oedema risk) |
| Kidney | Hourly urine output; avoid nephrotoxic drugs (NSAIDs, aminoglycosides); dialysis for refractory acidosis, hyperkalaemia, overload, or uraemia |
| Brain | Seizures: magnesium sulfate for eclampsia (see the neurology sheet); exclude other causes (stroke, cerebral venous thrombosis, hypoglycaemia) |
| Blood | Massive haemorrhage protocol, tranexamic acid 1 g, correct DIC (fibrinogen above 2 g/L, platelets above 50,000 if bleeding); Bakri balloon for atony |
| Infection | Cultures and broad-spectrum antibiotics within the first hour; find and remove the source (retained products, abscess, hysterectomy) |
| Metabolic and nutrition | Avoid hypoglycaemia; early enteral feeding; correct electrolytes; treat ketoacidosis with insulin infusion |
| Thromboprophylaxis | Low molecular weight heparin (weight-based) and stockings unless bleeding or very low platelets |
| Analgesia and sedation | Adequate pain relief; avoid over-sedation; check drug safety for breastfeeding |
| Condition | Key actions |
|---|---|
| Severe pre-eclampsia, eclampsia, HELLP | Treat severe hypertension within 30–60 minutes (labetalol, nifedipine, hydralazine); magnesium sulfate with monitoring of reflexes, respiration, and urine; restrict fluids; deliver after stabilisation; watch for pulmonary oedema, renal failure, liver haematoma |
| Obstetric haemorrhage and DIC | Haemostatic resuscitation (red cells, plasma, platelets, fibrinogen), tranexamic acid, surgical control, warm the patient, correct calcium |
| Sepsis and septic shock | Antibiotics within an hour, fluids with caution, noradrenaline for a mean pressure under 65, source control; influenza in pregnancy: oseltamivir at once without waiting for a test |
| Heart disease | Peripartum cardiomyopathy and valve disease: echocardiography, diuretics, rate control, anticoagulation as indicated; avoid fluid overload |
| Amniotic fluid embolism | Supportive care, manage the coagulopathy, consider extracorporeal support |
| ARDS and pneumonia | Lung-protective ventilation, prone positioning is possible, treat the infection, extracorporeal support if refractory |
| Acute fatty liver and acute liver failure | Deliver, glucose monitoring, correct coagulopathy, liver unit referral (see the liver sheet) |
| Diabetic ketoacidosis | Insulin infusion, fluids, potassium; can occur at near-normal glucose in pregnancy (see the diabetes sheet) |
| Topic | Details |
|---|---|
| Monitoring (MoHFW) | Temperature, blood pressure, heart rate, respiratory rate, oxygen saturation, and urine output at least hourly in the acute phase; fluid and electrolyte balance; treat the cause |
| The fetus | Continuous cardiotocography when viable; left lateral tilt about 15° and oxygen; corticosteroids if under 34 weeks; magnesium for neuroprotection before 32 weeks; deliver when it helps the mother (pre-eclampsia, chorioamnionitis, abruption, fatty liver) — not simply to improve a mother's lungs or heart |
| Protocols (MoHFW) | Written SOPs for admission and discharge, resuscitation, major haemorrhage, pre-eclampsia and eclampsia, severe blood pressure disorders, diabetic ketoacidosis, sepsis, difficult intubation, anaesthesia and analgesia, post-dural puncture headache, thromboprophylaxis |
| Discharge from HDU (MoHFW) | Stable circulation, no need for intensive monitoring, no continuous intravenous drugs or frequent blood tests, no active bleeding or oxygen need, walking; HDU stay is usually 24–72 hours |
| Records and referral (MoHFW) | History, diagnosis, tests, operative notes, summary, dated and signed entries, consent and family counselling documented; referral slip, emergency drugs, escort with infusions, monitoring, secure airway |
| Family and follow-up | Daily, honest communication; support for the woman's mental health (depression and post-traumatic stress are common); breastfeeding, contraception, and counselling for future pregnancy; near-miss review of every ICU admission (see the collapse sheet) |
Late recognition and late transfer; treating on the ward what needs the HDU
Using non-pregnant targets (PaCO₂, blood pressure, oxygen) or forgetting left tilt
Fluid overload in pre-eclampsia, or too little fluid in haemorrhage and sepsis
Delivering a very sick mother for the baby's sake before she is stabilised
No thromboprophylaxis, no hourly chart, poor handover, or no record of consent
Forgetting the baby, the family, and the woman's mind after she leaves the unit



