Basic Study
Copyright ©The Author(s) 2024.
World J Exp Med. Mar 20, 2024; 14(1): 87256
Published online Mar 20, 2024. doi: 10.5493/wjem.v14.i1.87256
Table 1 Observed haemodynamic values. Values are medians with interquartile range for controls, pressure-controlled ventilation and superimposed high-frequency jet ventilation at baseline, one-lung flooding/one-lung ventilation in different animal positions and after one-lung flooding
VariableModeBaseline (TLV)

OLF/OLV

After OLF (TLV)
SP
LLP
SP
RLP
SP
HR (bpm)CO-group98.0 (89.5-105.0)100.0 (98.5-104.0)97.0 (89.5-102.0)100.0 (97.0-102.5)97.0 (90.0-100.5)
PCV104 (98.3-109.8)92.0 (85.5-99.3)a95.0 (91.0-103.0)a95.0 (91.0-99.0)a91.0 (86.0-98.0)a
SHFJVb91.0 (85.0-100.3)90.0 (85.0-95.0)105.0 (99.0-112.0)c
MAP (mmHg)CO-group80.0 (72.5-90.5)78.0 (71.0-82.5)75.0 (67.5-82.5)71.0 (62.0-80.5)71.0 (58.0-77.0)
PCV84.5 (80.3-91.8)89.0 (85.3-92.8)80.0 (64.0-89.0)88.0 (68.0-101.0)98.0 (91.0-107.0)a
SHFJV90.5 (88.3-94.0)90.0 (88.0-91.0)c93.0 (87.0-97.0)
sPAP (mmHg)CO-groupb31 (29.5-32.0)29 (26.5-29.5)30 (29.0-33.0)31 (29.0-32.5)30 (28.0-32.0)
PCV30.5 (29.0-31.8)35 (32.0-38.0)a35 (34.0-36.0)a35 (33.0-40.0)a36 (28.0-38.0)
SHFJVb34 (31.0-39.0)37 (35.0-39.0)43 (38.0-45.0)c
dPAP (mmHg)CO-group20 (17.5-22.5)19 (16.5-21.5)20 (16.5-23.0)21 (19.5-23.5)19 (17.5-21.5)
PCV21 (19.3-22.0)22 (20.0-23.8)21 (20.0-23.0)21 (19.0-22.0)22 (19.0-24.0)
SHFJVb20 (18.3-24.5)22 (21.0-23.0)25 (23.0-29.0)c
mPAP (mmHg)CO-group24 (22.0-25.5)23 (20.0-25.5)24 (21.5-28.0)24 (21.5-25.0)22 (20.0-23.0)
PCV25 (24.0-26.0)28 (26.0-30.3)a28 (26.0-28.0)a28 (26.0-29.0)a22 (19.0-24.0)a
SHFJV27 (25.0-30.3)30 (28.0-32.0)31 (28.0-34.0)c
Table 2 Observed gas exchange values. Values are medians with interquartile range for controls, pressure-controlled ventilation and superimposed high-frequency jet ventilation at baseline, one-lung flooding/one-lung ventilation in different animal positions and after one-lung flooding
VariableModeBaseline (TLV)

OLF/OLV

after OLF (TLV)
SP
LLP
SP
RLP
SP
PaO2 (kPa)CO-group20.8 (19.7-21.7)22.0 (21.4-25.1)20.5 (20.0-21.4)23.6 (22.0-24.1)22.5 (21.4- 24.3)
PCV20.6 (18.6-22.7)18.8 (15.3-20.4)a17.6 (14.7-19.1)a19.8 (18.5-20.3)22.3 (19.9-23.1)
SHFJV14.5 (11.2-20.9)13.0 (12.6-15.6)c13.6 (11.4-17.3)c
SaO2 (%)CO-group99.7 (99.7-99.8)99.7 (99.7-99.8)99.7 (99.7-99.9)99.7 (99.7-99.9)99.7 (99.7-99.8)
PCV99.7 (99.6-99.8)99.7 (99.1-99.9)99.7 (98.8-99.7)99.7 (99.7-99.7)99.7 (99.6-99.8)
SHFJV98.3 (94.7-99.7)97.6 (96.4-98.7)c97.6 (94.399.2)c
PaCO2 (kPa)CO-group5.3 (5.0-5.4)4.9 (4.7-5.0)4.8 (4.7-4.9)4.6 (4.54.8)4.6 (4.3-4.8)
PCV5.0 (4.8-6.0)4.7 (4.3-4.9)a4.7 (4.3-5.2)a4.7 (4.3-4.9)4.6 (4.5-4.8)
SHFJVb5.8 (5.5-6.3)c5.7 (5.5-6.0)c6.2 (5.8-6.8)c
pHCO-group7.46 (7.43-7.49)7.47 (7.45-7.49)7.46 (7.43-7.48)7.44 (7.4-7.46)7.47 (7.44-7.49)
PCV7.46 (7.44-7.48)7.46 (7.44-7.48)7.47 (7.45-7.49)7.46 (7.44-7.48)7.47 (7.45-7.49)
SHFJVb7.41 (7.39- 7.43)7.4 (7.39-7.41)7.38 (7.36-7.39)c