Lung Ultrasound Is Accurate for the Diagnosis of High-Altitude Pulmonary Edema: A Prospective Study

Table 2

Characteristics of enrolling patients.

HAPE severity according to HULTGREN grades
Grade 1 (mild)	3
Grade 2 (moderate)	21
Grade 3 (serious)	93
Grade 4 (severe)	9
Patients of non-HAPE (number %)	22 (14.9)
Bronchitis	1 (0.7)
Acute upper respiratory infection	4 (2.7)
Acute mild high-altitude disease	17 (11.5)
Radiologic score of extravascular lung water of HAPE (before treatment)
Median (IQR)	39 (29–48)
Range	0–83

Interquartile range (IQR) expressed as the 25th and 75th percentiles.