A Novel Scale to Assess Humidification during Noninvasive Ventilation: A Prospective Observational Study

Table 1

Demographics of the enrolled patients.

Variables	Total cohort; N = 33
Age, years	73.7 ± 12.1
Male (%)	27 (82%)
Diagnosis
Pneumonia	16 (49%)
COPD	14 (42%)
Others	3 (9%)
Underlying disease
Hypertension	18 (55%)
Coronary heart disease	7 (21%)
Pulmonary heart disease	6 (18%)
Diabetes	6 (18%)
Chronic heart failure	4 (12%)
Tumor	3 (9%)
Cerebral infarction	2 (6%)
Ventilator parameters^#
Ventilation mode	S/T
IPAP, cmH2O	16.8 ± 2.6
EPAP, cmH2O	7.6 ± 1.5
FiO2 (%)	39.4 ± 9.4
Air leak, L/min	54.7 ± 19.7
, mL/min	542 ± 159
MV, L/min	13.1 ± 4.2
Measured respiratory rate, breaths/min	25 ± 6

^#We enrolled 33 patients and performed 36 assessments. COPD = chronic obstructive pulmonary disease, IPAP = inspiratory positive airway pressure, EPAP = expiratory positive airway pressure,  = tidal volume, MV = minute ventilation.