. Author manuscript; available in PMC: 2022 Nov 14.

Published in final edited form as: Eur Respir J. 2023 Jan 27;61(1):2201117. doi: 10.1183/13993003.01117-2022

TABLE 4.

Shunt and alveolar dead space in acute COVID-19 patients (including the subgroup of 17 patients studied later in recovery), recovered patients and healthy subjects.

	Acute (n=30)	Acute^# (n=17)	Recovered (n=17)	Healthy (n=13)
Shunt (%)	10.4±5.4 (0–22.0)	11.7±5.1 (4.1–22.0)	2.4±1.9^** (0–6.1)	1.2±1.1 (0–4.1)
Alveolar dead space (%)	14.9±9.6 (0–32.3)	14.4±9.7 (0–29.7)	8.6±5.5^* (0–22.4)	4.7±4.3 (0–11.8)

Data are presented as mean±SD (range).

^#:

subgroup studied in recovery.

^*:

p<0.05;

^**:

p<0.0001 (compared with acute subgroup).