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Table 1 Criteria for severe maternal morbidity

From: Severe maternal morbidity: a case-control study in Maranhao, Brazil

Acute pulmonary oedema: Necessitating intravenous furosemide or intubation Severe pre-eclampsia
Cardiac arrest Eclampsia
Hypovolaemia requiring ≥ 5 unit of packet red blood cells HELLP Syndrome ((haemolysis, elevated liver enzymes, low platelets)
Intensive care admission for sepsis Severe sepsis
Emergency hysterectomy for sepsis Severe haemorrhage (estimated blood loss ≥ 1500 ml, peripartum fall in a hemoglobin concentration ≥ 4g/dl or transfusion ≥ 4 units of packed red blood cells)
Intubation and ventilation for more than 60 minutes, for ant reason other than a general anesthetic Uterine rupture
Peripheral O2 saturation <90% for more than 60 minutes  
Ratio (PaO2/FiO2) <300  
Oliguria, defined as diuress <400ml/24h refractory to careful hydration or to furosemide or dopamine  
Acute urea deterioration to > 15 mmol/ l or creatinine > 400mmol / l  
Jaundice in the presence of pre-eclampsia  
Diabetic ketoacidosis  
Thyrotoxic crisis  
Acute thrombocytopenia requiring a platelet transfusion  
Coma in a patient lasting > 12 hours  
Subarachnoid or intracerebral hemorrhage  
Intensive care admission admission for any reason  
Emergency hysterectomy for any reason  
Anaesthetic Accident: severe hypotension (systolic pressure <90 mmHg lasting >60 minutes) associated with spinal or epidural anaesthetic  
Anaesthetic Accident : Failed tracheal intubation requiring anaesthetic reversal