Skip to main content

Table 2 Published reference values on VD/VT (Enghoff) and VR in non-COVID-19 ARDS patients

From: Respiratory mechanics and gas exchanges in the early course of COVID-19 ARDS: a hypothesis-generating study

First author Year of publication n PEEP level (cmH2O) VD/VT (Enghoff) (%) VR Comments
Nuckton [22] 2002 179 8.5 ± 3 58 ± 10 NR  
Lucangelo [23] 2008 10 10 ± 3 54 ± 14 NR  
Fengmei [24] 2012 12 deceased
11 survived
6
6
64 ± 8
53 ± 4
NR Fixed PEEP level
Kallet [25] 2014 99 10 ± 3 57 ± 11 NR  
Beitler [26] 2015 210 10 ± 4 60 ± 12 NR  
Sinha [27] 2018 520 11 ± 4 63 ± 12 1.9 ± 0.6 28 patients with mild ARDS
Cogniat [28] 2018 14 16 69 [59-77] NR 7 patients with mild ARDS
HME (internal volume: 40 mL)
VD/VT not influenced by PEEP level (0 to 16 cmH2O)
Van Meenen [29] 2019 41 deceased
49 survived
15 [11-16]
15 [10-16]
43 [34-51]
27 [22-36]
NR  
Morales-Quintero [31] 2019 288 deceased
652 survived
10 [6-13]
10 [5-12]
NR 1.8 [1.5-2.3]
1.6 [1.4-2]
 
Ospina Tascon [30] 2020 42 12 [10-15] 54 [45-61] NR  
Present study   22 16 [15-17] 75 [69-80.5] 2.9 [2.2-3.4] COVID-19 patients
  1. VD/VT physiological dead space, VR ventilatory ratio, HME heat and moisture exchange filter