TY - JOUR
T1 - Physiological effects of two driving pressure-based methods to set positive end-expiratory pressure during one lung ventilation
AU - Spadaro, Savino
AU - Grasso, Salvatore
AU - Karbing, Dan Stieper
AU - Santoro, Giuseppe
AU - Cavallesco, Giorgio
AU - Maniscalco, Pio
AU - Murgolo, Francesca
AU - Di Mussi, Rosa
AU - Ragazzi, Riccardo
AU - Rees, Stephen Edward
AU - Volta, Carlo Alberto
AU - Fogagnolo, Alberto
PY - 2021
Y1 - 2021
N2 - During one-lung ventilation (OLV), titrating the positive end-expiratory pressure (PEEP) to target a low driving pressure (∆P) could reduce postoperative pulmonary complications. However, it is unclear how to conduct PEEP titration: by stepwise increase starting from zero PEEP (PEEP
INCREMENTAL) or by stepwise decrease after a lung recruiting manoeuvre (PEEP
DECREMENTAL). In this randomized trial, we compared the physiological effects of these two PEEP titration strategies on respiratory mechanics, ventilation/perfusion mismatch and gas exchange. Patients undergoing video-assisted thoracoscopic surgery in OLV were randomly assigned to a PEEP
INCREMENTAL or PEEP
DECREMENTAL strategy to match the lowest ∆P. In the PEEP
INCREMENTAL group, PEEP was stepwise titrated from ZEEP up to 16 cm H
2O, whereas in the PEEP
DECREMENTAL group PEEP was decrementally titrated, starting from 16 cm H
2O, immediately after a lung recruiting manoeuvre. Respiratory mechanics, ventilation/perfusion mismatch and blood gas analyses were recorded at baseline, after PEEP titration and at the end of surgery. Sixty patients were included in the study. After PEEP titration, shunt decreased similarly in both groups, from 50 [39–55]% to 35 [28–42]% in the PEEP
INCREMENTAL and from 45 [37–58]% to 33 [25–45]% in the PEEP
DECREMENTAL group (both p < 0.001 vs baseline). The resulting ∆P, however, was lower in the PEEP
DECREMENTAL than in the PEEP
INCREMENTAL group (8 [7–11] vs 10 [9–11] cm H
2O; p = 0.03). In the PEEP
DECREMENTAL group the PaO
2/ FIO
2 ratio increased significantly after intervention (from 140 [99–176] to 186 [152–243], p < 0.001). Both the PEEP
INCREMENTAL and the PEEP
DECREMENTAL strategies were able to decrease intraoperative shunt, but only PEEP
DECREMENTAL improved oxygenation and lowered intraoperative ΔP. Clinical trial number NCT03635281; August 2018; “retrospectively registered”.
AB - During one-lung ventilation (OLV), titrating the positive end-expiratory pressure (PEEP) to target a low driving pressure (∆P) could reduce postoperative pulmonary complications. However, it is unclear how to conduct PEEP titration: by stepwise increase starting from zero PEEP (PEEP
INCREMENTAL) or by stepwise decrease after a lung recruiting manoeuvre (PEEP
DECREMENTAL). In this randomized trial, we compared the physiological effects of these two PEEP titration strategies on respiratory mechanics, ventilation/perfusion mismatch and gas exchange. Patients undergoing video-assisted thoracoscopic surgery in OLV were randomly assigned to a PEEP
INCREMENTAL or PEEP
DECREMENTAL strategy to match the lowest ∆P. In the PEEP
INCREMENTAL group, PEEP was stepwise titrated from ZEEP up to 16 cm H
2O, whereas in the PEEP
DECREMENTAL group PEEP was decrementally titrated, starting from 16 cm H
2O, immediately after a lung recruiting manoeuvre. Respiratory mechanics, ventilation/perfusion mismatch and blood gas analyses were recorded at baseline, after PEEP titration and at the end of surgery. Sixty patients were included in the study. After PEEP titration, shunt decreased similarly in both groups, from 50 [39–55]% to 35 [28–42]% in the PEEP
INCREMENTAL and from 45 [37–58]% to 33 [25–45]% in the PEEP
DECREMENTAL group (both p < 0.001 vs baseline). The resulting ∆P, however, was lower in the PEEP
DECREMENTAL than in the PEEP
INCREMENTAL group (8 [7–11] vs 10 [9–11] cm H
2O; p = 0.03). In the PEEP
DECREMENTAL group the PaO
2/ FIO
2 ratio increased significantly after intervention (from 140 [99–176] to 186 [152–243], p < 0.001). Both the PEEP
INCREMENTAL and the PEEP
DECREMENTAL strategies were able to decrease intraoperative shunt, but only PEEP
DECREMENTAL improved oxygenation and lowered intraoperative ΔP. Clinical trial number NCT03635281; August 2018; “retrospectively registered”.
KW - Driving pressure
KW - One-lung ventilation
KW - Oxygenation
KW - Positive end-expiratory pressure
KW - Shunt
UR - http://www.scopus.com/inward/record.url?scp=85089567502&partnerID=8YFLogxK
U2 - 10.1007/s10877-020-00582-z
DO - 10.1007/s10877-020-00582-z
M3 - Journal article
C2 - 32816177
SN - 1387-1307
VL - 35
SP - 1149
EP - 1157
JO - Journal of Clinical Monitoring and Computing
JF - Journal of Clinical Monitoring and Computing
IS - 5
ER -