Predicted body weight relationships for protective ventilation – unisex proposals from pre-term through to adult

BMC Pulmonary Medicine

Table 3 PBWuf + MBW model (unified curve, adopts PBW Female formula for adults [19])

Segment #	Height/Length	Relationship	Reference data	Error % relative to reference
1	Centimeters: 25–33	PBW = 0.22 + 0.055 ⋅ (length − 25)	Median data: INTERGROWTH Pre-Term [24]	−8.3 < ϵ < +3.7
1	Centimeters: 25–33	length in cm, weight in kg	Median data: INTERGROWTH Pre-Term [24]	−8.3 < ϵ < +3.7
2	Centimeters: 33–45	PBW = 0.66 + 0.116 ⋅ (length − 33)	Median data: INTERGROWTH Pre-Term [24]	−7.6 < ϵ < +4.5
2	Centimeters: 33–45	length in cm, weight in kg	Median data: INTERGROWTH Pre-Term [24]	−7.6 < ϵ < +4.5
3	Centimeters: 45–105	PBW = 2.05 + 0.24 ⋅ (height − 45)	Median data: INTERGROWTH Pre-Term [24], WHO 45–110 cm [21]	−7.6 < ϵ < +4
3	Centimeters: 45–105	height in cm, weight in kg	Median data: INTERGROWTH Pre-Term [24], WHO 45–110 cm [21]	−7.6 < ϵ < +4
4	Centimeters: 105–133	PBW = 16.4 + 0.41 ⋅ (height − 105)	Median data: WHO 45–110 cm & 5-10yo [21] CDC 2-20yo [22]	−1.6 < ϵ < +2.4
4	Centimeters: 105–133	height in cm, weight in kg	Median data: WHO 45–110 cm & 5-10yo [21] CDC 2-20yo [22]	−1.6 < ϵ < +2.4
5	Centimeters: ≥ 133	PBW = 27.8 + 0.91 ⋅ (height − 133)	PBW Female [19]	cf PBW Male: −9.2 < ϵ < −3.8
		height in cm, weight in kg		cf PBW Female: −0.1 < ϵ < 0
		height in cm, weight in kg		(cf CDC 2-20yo: −1.6 < ϵ < +9.8)

ARDS acute respiratory distress syndrome, CDC Centers for Disease Control, cf compared with, kg kilograms, PBW predicted body weight, WHO World Health Organization

ISSN: 1471-2466