Skip to main content

Table 1 Features (units of measurement and percentage of patients with that feature recorded) for training (and validation) datasets.

From: A clinical prediction model to identify patients at high risk of hemodynamic instability in the pediatric intensive care unit

Arterial blood gas Invasive vitals
Arterial pH   63 (92) Invasive mean blood pressure (iMBP) mmHg 51 (1)
Bicarbonate (HCO3) mEq 63 (84) Invasive systolic blood pressure (iSBP) mmHg 51 (1)
Arterial PaCO2 mmHg 63 (92) Invasive diastolic blood pressure (iDBP) mmHg 51 (1)
SaO2 % 63 (79)    
Arterial base excess (aBE) mEq/L 63 (91)    
Arterial PaO 2 mmHg 63 (92)    
Ventilator parameters Noninvasive vitals/demographics
PF ratio   41 (26) Noninvasive mean blood pressure (nMBP) qmmHg 98 (100)
FiO 2 % 76 (89) Noninvasive systolic blood pressure (nSBP) qmmHg 98 (100)
Mean airway pressure cmH2O 35 (66) Noninvasive diastolic blood pressure (nDBP) mmHg98(100)  
    Heart rate (HR) bpm 100 (100)
    Respiratory rate (RR) bpm 99 (96)
    SpO 2 % 61 (68)
    Age years 100 (100)
    Temperature (T) Celsius 99 (99)
Basic metabolic panel Comprehensive metabolic panel
Glucose mg/dl 74 (91) Alanine aminotransferase (ALT) U/L 18 (77)
Chloride mEq/L 72 (91) Albumin g/dl 18 (81)
Blood urea nitrogen (BUN) mg/dl 66 (84) Total protein g/dl 18 (81)
Creatinine mg/dl 66 (84)    
Potassium mEq/L 78 (91)    
Sodium mEq/L 77 (93)    
Complete blood count
WBC – leukocytes K/μl 65 (43) RBC M/μl 65 (12)
Hemoglobin g/dl 68 (52) Platelets K/μl 65 (41)
Additional tests
Magnesium mg/dl 26 (70) Prothrombin time (INR) seconds 37 (29)
Lactic acid mg/dl 14 (45) Urine output cm3/kg/hour 77 (72)
  1. All 36 features were input to the AdaBoost-abstain classifier to classify hemodynamic instability. Among the 36 features, only 21 (highlighted in bold) were selected by the model
  2. RBC red blood cells, WBC white blood cells
Back to article page

Critical Care

ISSN: 1364-8535