Table 2.

The range of $P_{{\text{etCO}}_2}$, $\dot{V}$, mechanical ventilation settings, and the data length, shown in terms of median [interquartile range (IQR)].

	$P_{{\text{etCO}}_2}$ (mmHg)	$\dot{V}$ (lpm)	TV (ml)	RR (m−1)	Ppeak (cmH2O)	I:E ratio	Length (min)
Median (IQR)	40.8 (38.2–43.6)	2.24 (1.84–2.59)	226 (197–250)	10.7 (9.4–12.3)	13.1 (12.5–13.8)	1.02 (0.79–1.23)	24.4 (12.3–36.6)
$\frac{(\text{Max}-\text{Min})}{\text{Mean}}$	35.8%	89.1%	62.0%	60.9%	45.7%	108.8%	–

$P_{{\mathit{etCO}}_2}$, end-tidal CO₂ tension; $\dot{V}$, minute ventilation; TV, tidal volume; RR, respiratory rate; P_peak, peak inspiratory pressure.