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Table 1 Proportion of women dead or surviving (near miss) a severe maternal morbidity according to laboratory, management and combined criteria for maternal near miss proposed by WHO

From: Pre-validation of the WHO organ dysfunction based criteria for identification of maternal near miss

WHO criteria# Death Near Miss Mortality rate (%)
  n % n %  
Laboratory based criteria      
   PaO2/FiO2 <200 mmHg 10 55.6 48 7.3 17.2
   Higher creatinine ≥3.5 mg/dl 4 22.2 17 2.6 19.0
   Higher bilirubin total >6.0 mg/dl 5 27.8 9 1.4 35.7
   Lower pH <7.1 5 27.8 4 0.6 55.6
   Lower platelet count <50,000 8 44.4 51 7.8 13.6
Any laboratory * 15 83.3 108 16.5 12.2
Management      
   Use of vasoactive drugs 16 88.9 63 9.6 20.2
   Hysterectomy 4 22.2 47 7.2 7.8
   Blood transfusion ≥5 units 4 22.2 38 5.8 9.5
   Invasive mechanical ventilation ≥ 1 h 16 88.9 91 13.9 14.9
   Hemodialysis 3 16.7 4 0.6 42.9
   CPR 10 55.6 4 0.6 71.4
Any management 17 94.4 145 22.1 10.5
Combined (laboratory and management) 18 100.0 194 29.6 8.5
(Total number of SMM) 18   655   
  1. # The clinical criteria were not included in this current evaluation
  2. * The following laboratory criteria were not included: Oxygen saturation <90% for ≥60 min; lactate >5; loss of consciousness with glycosuria and ketonuria
  3. SMM: severe maternal morbidity; CPR: cardio pulmonary resuscitation.