. 2020 Dec 25;6:100063. doi: 10.1016/j.ympdx.2020.100063

Table I.

Description of the circumstances that interfered with the assessment of physiologic breaths in the respiratory registries

Variables	Description
Flow and V_Te	Airway obstruction²⁵ coinciding with • Secretions • Neck hyperextension or flexion • Excessive pressure on the mask • Infant's movements • Mask leakage (abnormal positioning) • Sensor interfering with crying Panting pattern characterized by • Shallow breaths with VTs below the values established for anatomical dead space²⁵^,³⁰^,³¹ Excessive V_T • V_T > total lung capacity referred to as 48 (IQR 43-52) mL/kg³²
RR	Reliable range between 15 and 150 bpm²⁵

Variables

Description

Flow and V_Te

Airway obstruction²⁵ coinciding with

Panting pattern characterized by

•
Shallow breaths with VTs below the values established for anatomical dead space²⁵^,³⁰^,³¹

Excessive V_T

Reliable range between 15 and 150 bpm²⁵