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Table 1 Baseline characteristics of subjects and study assessments

From: Pulmonary ultrasound and pulse oximetry versus chest radiography and arterial blood gas analysis for the diagnosis of acute respiratory distress syndrome: a pilot study

Characteristic Number Percent
Patients 77  
 Male 52 68
 Age, median (IQR) 56 (41–67)  
 Number undergoing 2 assessments 13 17
 Number undergoing 3 assessments 3 4
 Number undergoing ≥4 assessments 8 10
Assessments 123  
 Site:   
 MICU 45 37
 SICU 49 40
 NICU 29 24
 Diagnosis:
 Sepsis 36 29
 Trauma 31 25
 Postsurgery 24 20
 CVA 21 17
 Cardiogenic pulmonary edema 21 17
 Pneumonia 20 16
 PEA or VF arrest 13 11
 PE 10 8
 ARDS 10 8
 Overdose 9 7
 Seizure 7 6
 Pancreatitis 7 6
 COPD 6 5
 FiO2 at time of ABG, median (IQR) 0.40 (0.30–0.50)  
 PaO2/FiO2, median (IQR) 250 (180–337)  
 SpO2 % at time of ABG, median (IQR) 99 (97–100)  
 Bilateral opacities on CXR 42 34
  1. Patients may have more than one diagnosis at the time of assessment. ABG arterial blood gas, ARDS acute respiratory distress syndrome, COPD chronic obstructive pulmonary disease, CVA Cerebrovascular Accident, CXR chest x-ray, IQR interquartile range, MICU Medical Intensive Care Unit, NICU Neurological Intensive Care Unit, PE Pulmonary Embolism, PEA Pulseless Electrical Activity, SICU Surgical Intensive Care Unit, SpO2 pulse oximetric oxygen saturation, VF Ventricular Fibrillation